Merge pull request 'Create an early scripting engine' (#2) from feature/early-scripting into main

Reviewed-on: #2

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "lyra-scripting/elua"]
+	path = lyra-scripting/elua
+	url = git@git.seanomik.net:SeanOMik/elua.git

.vscode/launch.json

@@ -72,7 +72,7 @@
                     "--no-run",
                     "--lib",
                     "--package=lyra-ecs",
-                    "world::tests::view_change_tracking",
+                    "command::tests::deferred_commands",
                     "--",
                     "--exact --nocapture"
                 ],

Cargo.toml

@@ -10,11 +10,12 @@ members = [
     "lyra-ecs",
     "lyra-reflect",
     "lyra-scripting",
-    "lyra-game"]
+    "lyra-game", "lyra-math"]
 
 [features]
 scripting = ["dep:lyra-scripting"]
+lua_scripting = ["scripting", "lyra-scripting/lua"]
 
 [dependencies]
 lyra-game = { path = "lyra-game" }
-lyra-scripting = { path = "lyra-scripting", optional = true }
+lyra-scripting = { path = "lyra-scripting", optional = true }

examples/testbed/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-lyra-engine = { path = "../../", version = "0.0.1", features = ["scripting"] }
+lyra-engine = { path = "../../", version = "0.0.1", features = ["lua_scripting"] }
+lyra-scripting = { path = "../../lyra-scripting", features = ["lua", "teal"] }
 #lyra-ecs = { path = "../../lyra-ecs"}
 anyhow = "1.0.75"
 async-std = "1.12.0"

examples/testbed/scripts/test.lua

@@ -0,0 +1,85 @@
+function on_init()
+    local cube = world:request_res("assets/cube-texture-embedded.gltf")
+    print("Loaded textured cube")
+
+    local pos = Transform.from_translation(Vec3.new(0, 0, -8.0))
+
+    local e = world:spawn(pos, cube)
+    print("spawned entity " .. tostring(e))
+
+    local handler = ActionHandler.new {
+        layouts = { 0 },
+        actions = {
+            MoveForwardBackward = "Axis",
+            MoveLeftRight = "Axis",
+            MoveUpDown = "Axis",
+            LookLeftRight = "Axis",
+            LookUpDown = "Axis",
+            LookRoll = "Axis",
+            ObjectsMoveUpDown = "Axis"
+        },
+        mappings = {
+            {
+                layout = 0,
+                binds = {
+                    MoveForwardBackward = {
+                        "key:w=1.0", "key:s=-1.0"
+                    },
+                    MoveLeftRight = {
+                        "key:a=-1.0", "key:d=1.0"
+                    },
+                    MoveUpDown = {
+                        "key:c=1.0", "key:z=-1.0"
+                    },
+                    LookLeftRight = {
+                        "key:left=-1.0", "key:right=1.0",
+                        "mouse:axis:x"
+                    },
+                    LookUpDown = {
+                        "key:up=-1.0", "key:down=1.0",
+                        "mouse:axis:y",
+                    },
+                    LookRoll = {
+                        "key:e=-1.0", "key:q=1.0",
+                    },
+                    ObjectsMoveUpDown = {
+                        "key:u=1.0", "key:j=-1.0"
+                    }
+                }
+            }
+        }
+    }
+
+    world:add_resource(handler)
+end
+
+--[[ function on_first()
+    print("Lua's first function was called")
+end
+
+function on_pre_update()
+    print("Lua's pre-update function was called")
+end ]]
+
+function on_update()
+    ---@type number
+    local dt = world:resource(DeltaTime)
+    local act = world:resource(ActionHandler)
+    ---@type number
+    local move_objs = act:get_axis("ObjectsMoveUpDown")
+
+    world:view(function (t)
+        if move_objs ~= nil then
+            t:translate(0, move_objs * 0.35 * dt, 0)
+            return t
+        end
+    end, Transform)
+end
+
+--[[ function on_post_update()
+    print("Lua's post-update function was called")
+end
+
+function on_last()
+    print("Lua's last function was called")
+end ]]

examples/testbed/src/free_fly_camera.rs

@@ -55,9 +55,9 @@ pub fn free_fly_camera_controller(delta_time: Res<DeltaTime>, handler: Res<Actio
         let left = cam.transform.left();
         let up = Vec3::Y;
 
-        let move_y = handler.get_axis_modifier(CommonActionLabel::MoveUpDown).unwrap_or(0.0);
-        let move_x = handler.get_axis_modifier(CommonActionLabel::MoveLeftRight).unwrap_or(0.0);
-        let move_z = handler.get_axis_modifier(CommonActionLabel::MoveForwardBackward).unwrap_or(0.0);
+        let move_y = handler.get_axis_modifier("MoveUpDown").unwrap_or(0.0);
+        let move_x = handler.get_axis_modifier("MoveLeftRight").unwrap_or(0.0);
+        let move_z = handler.get_axis_modifier("MoveForwardBackward").unwrap_or(0.0);
 
         let mut velocity = Vec3::ZERO;
         velocity += move_y * up;
@@ -68,9 +68,9 @@ pub fn free_fly_camera_controller(delta_time: Res<DeltaTime>, handler: Res<Actio
             cam.transform.translation += velocity.normalize() * fly.speed * delta_time; // TODO: speeding up
         }
 
-        let motion_x = handler.get_axis_modifier(CommonActionLabel::LookLeftRight).unwrap_or(0.0);
-        let motion_y = handler.get_axis_modifier(CommonActionLabel::LookUpDown).unwrap_or(0.0);
-        let motion_z = handler.get_axis_modifier(CommonActionLabel::LookRoll).unwrap_or(0.0);
+        let motion_x = handler.get_axis_modifier("LookLeftRight").unwrap_or(0.0);
+        let motion_y = handler.get_axis_modifier("LookUpDown").unwrap_or(0.0);
+        let motion_z = handler.get_axis_modifier("LookRoll").unwrap_or(0.0);
         
         let mut camera_rot = Vec3::ZERO;
         camera_rot.y -= motion_x * fly.mouse_sensitivity;

examples/testbed/src/main.rs

@@ -1,6 +1,6 @@
 use std::ptr::NonNull;
 
-use lyra_engine::{math::{self, Vec3}, math::Transform, input::{KeyCode, ActionHandler, Action, ActionKind, LayoutId, ActionMapping, ActionSource, ActionMappingId, InputActionPlugin, MouseInput, MouseAxis, CommonActionLabel}, game::Game, render::{window::{CursorGrabMode, WindowOptions}, light::{PointLight, directional::DirectionalLight, SpotLight}}, change_tracker::Ct, ecs::{system::{Criteria, CriteriaSchedule, BatchedSystem, IntoSystem}, world::World, Component}, DeltaTime, scene::{TransformComponent, ModelComponent, CameraComponent}};
+use lyra_engine::{math::{self, Vec3}, math::Transform, input::{KeyCode, ActionHandler, Action, ActionKind, LayoutId, ActionMapping, ActionSource, ActionMappingId, InputActionPlugin, MouseInput, MouseAxis, CommonActionLabel}, game::Game, render::{window::{CursorGrabMode, WindowOptions}, light::{PointLight, directional::DirectionalLight, SpotLight}}, change_tracker::Ct, ecs::{system::{Criteria, CriteriaSchedule, BatchedSystem, IntoSystem}, world::World, Component}, DeltaTime, scene::{ModelComponent, CameraComponent}, lua::{LuaScriptingPlugin, LuaScript}, Script, ScriptList};
 use lyra_engine::assets::{ResourceManager, Model};
 
 mod free_fly_camera;
@@ -77,29 +77,29 @@ struct CubeFlag;
 async fn main() {
     let setup_sys = |world: &mut World| -> anyhow::Result<()> {
         {
-            let mut window_options = world.get_resource_mut::<Ct<WindowOptions>>();
+            /* let mut window_options = world.get_resource_mut::<Ct<WindowOptions>>();
             window_options.cursor_grab = CursorGrabMode::Confined;
-            window_options.cursor_visible = false;
+            window_options.cursor_visible = false; */
         }
 
         let mut resman = world.get_resource_mut::<ResourceManager>();
         //let diffuse_texture = resman.request::<Texture>("assets/happy-tree.png").unwrap();
-        let antique_camera_model = resman.request::<Model>("assets/AntiqueCamera.glb").unwrap();
+        //let antique_camera_model = resman.request::<Model>("assets/AntiqueCamera.glb").unwrap();
         //let cube_model = resman.request::<Model>("assets/cube-texture-bin.glb").unwrap();
         let cube_model = resman.request::<Model>("assets/texture-sep/texture-sep.gltf").unwrap();
         let crate_model = resman.request::<Model>("assets/crate/crate.gltf").unwrap();
         drop(resman);
 
-        world.spawn((
+        /* world.spawn((
             ModelComponent(antique_camera_model),
-            TransformComponent::from(Transform::from_xyz(0.0, -5.0, -10.0)),
-        ));
+            Transform::from_xyz(0.0, -5.0, -10.0),
+        )); */
 
         {
             let cube_tran = Transform::from_xyz(-3.5, 0.0, -8.0);
             //cube_tran.rotate_y(math::Angle::Degrees(180.0));
             world.spawn((
-                TransformComponent::from(cube_tran),
+                cube_tran,
                 ModelComponent(crate_model.clone()),
                 CubeFlag,
             ));
@@ -117,7 +117,7 @@ async fn main() {
                     diffuse: 1.0,
                     specular: 1.3,
                 },
-                TransformComponent::from(light_tran),
+                light_tran,
                 ModelComponent(cube_model.clone()),
             ));
         }
@@ -139,7 +139,7 @@ async fn main() {
                     diffuse: 7.0,
                     specular: 1.0,
                 },
-                TransformComponent::from(light_tran),
+                Transform::from(light_tran),
                 ModelComponent(cube_model.clone()),
             ));
         }
@@ -183,7 +183,7 @@ async fn main() {
                     diffuse: 1.0,
                     specular: 1.3,
                 },
-                TransformComponent::from(light_tran),
+                Transform::from(light_tran),
                 ModelComponent(cube_model),
             ));
         }
@@ -206,7 +206,7 @@ async fn main() {
         Ok(())
     };
     let fps_plugin = move |game: &mut Game| {
-        let world = game.world();
+        let world = game.world_mut();
         world.add_resource(fps_counter::FPSCounter::new());
     };
 
@@ -214,13 +214,13 @@ async fn main() {
         const SPEED: f32 = 4.0;
         let delta_time = **world.get_resource::<DeltaTime>();
 
-        for (mut transform, _) in world.view_iter::<(&mut TransformComponent, &CubeFlag)>() {
-            let t = &mut transform.transform;
+        for (mut transform, _) in world.view_iter::<(&mut Transform, &CubeFlag)>() {
+            let t = &mut transform;
             t.rotate_y(math::Angle::Degrees(SPEED * delta_time));
         }
 
-        for (mut transform, _s) in world.view_iter::<(&mut TransformComponent, &mut SpotLight)>() {
-            let t = &mut transform.transform;
+        for (mut transform, _s) in world.view_iter::<(&mut Transform, &mut SpotLight)>() {
+            let t = &mut transform;
             t.rotate_x(math::Angle::Degrees(SPEED * delta_time));
         }
 
@@ -228,19 +228,19 @@ async fn main() {
     };
 
     let jiggle_plugin = move |game: &mut Game| {
-        game.world().add_resource(TpsAccumulator(0.0));
+        game.world_mut().add_resource(TpsAccumulator(0.0));
         
         let mut sys = BatchedSystem::new();
         sys.with_criteria(FixedTimestep::new(45));
         sys.with_system(spin_system.into_system());
         //sys.with_system(fps_system);
 
-        game.with_system("fixed", sys, &[]);
-        fps_plugin(game);
+        //game.with_system("fixed", sys, &[]);
+        //fps_plugin(game);
     };
 
     let action_handler_plugin = |game: &mut Game| {
-        let action_handler = ActionHandler::new()
+        /* let action_handler = ActionHandler::builder()
             .add_layout(LayoutId::from(0))
             
             .add_action(CommonActionLabel::MoveForwardBackward, Action::new(ActionKind::Axis))
@@ -250,7 +250,7 @@ async fn main() {
             .add_action(CommonActionLabel::LookUpDown, Action::new(ActionKind::Axis))
             .add_action(CommonActionLabel::LookRoll, Action::new(ActionKind::Axis))
 
-            .add_mapping(ActionMapping::new(LayoutId::from(0), ActionMappingId::from(0))
+            .add_mapping(ActionMapping::builder(LayoutId::from(0), ActionMappingId::from(0))
                 .bind(CommonActionLabel::MoveForwardBackward, &[
                     ActionSource::Keyboard(KeyCode::W).into_binding_modifier(1.0),
                     ActionSource::Keyboard(KeyCode::S).into_binding_modifier(-1.0)
@@ -282,26 +282,31 @@ async fn main() {
                 .finish()
             );
 
-        /* #[allow(unused_variables)]
-        let test_system = |world: &mut World| -> anyhow::Result<()> {
-            let handler = world.get_resource::<ActionHandler>();
-
-            if let Some(alpha) = handler.get_axis_modifier("look_rotate") {
-                debug!("'look_rotate': {alpha}");
-            }
-
-            Ok(())
-        }; */
-
-        game.world().add_resource(action_handler);
+        let world = game.world_mut();
+        world.add_resource(action_handler); */
         game.with_plugin(InputActionPlugin);
-        //game.with_system("input_test", test_system, &[]);
+    };
+
+    let script_test_plugin = |game: &mut Game| {
+        game.with_plugin(LuaScriptingPlugin);
+
+        let world = game.world_mut();
+        let mut res_man = world.get_resource_mut::<ResourceManager>();
+        let script = res_man.request::<LuaScript>("scripts/test.lua").unwrap();
+        res_man.watch("scripts/test.lua", false).unwrap();
+        drop(res_man);
+
+        let script = Script::new("test.lua", script);
+        let scripts = ScriptList::new(vec![script]);
+        world.spawn((scripts,));
+
     };
     
     Game::initialize().await
         .with_plugin(lyra_engine::DefaultPlugins)
         .with_startup_system(setup_sys.into_system())
         .with_plugin(action_handler_plugin)
+        .with_plugin(script_test_plugin)
         //.with_plugin(fps_plugin)
         .with_plugin(jiggle_plugin)
         .with_plugin(FreeFlyCameraPlugin)

lyra-ecs/Cargo.toml

@@ -5,10 +5,15 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[features]
+math = ["dep:lyra-math"]
+
 [dependencies]
 lyra-ecs-derive = { path = "./lyra-ecs-derive" }
+lyra-math = { path = "../lyra-math", optional = true }
 anyhow = "1.0.75"
 thiserror = "1.0.50"
+paste = "1.0.14"
 
 [dev-dependencies]
 rand = "0.8.5" # used for tests

lyra-ecs/src/archetype.rs

@@ -1,6 +1,6 @@
 use std::{ptr::{NonNull, self}, alloc::{self, Layout, alloc, dealloc}, mem, collections::HashMap, cell::{RefCell, Ref, RefMut, BorrowError, BorrowMutError}, ops::{DerefMut, Deref}};
 
-use crate::{world::{Entity, ArchetypeEntityId}, bundle::Bundle, component_info::ComponentInfo, DynTypeId, Tick};
+use crate::{world::ArchetypeEntityId, bundle::Bundle, component_info::ComponentInfo, DynTypeId, Tick, Entity};
 
 #[derive(Clone)]
 pub struct ComponentColumn {
@@ -210,6 +210,8 @@ impl ArchetypeId {
 pub struct Archetype {
     pub id: ArchetypeId,
     pub(crate) entities: HashMap<Entity, ArchetypeEntityId>,
+    /// map an Archetype entity id to an entity
+    pub(crate) ids_to_entity: HashMap<ArchetypeEntityId, Entity>,
     pub(crate) columns: Vec<ComponentColumn>,
     pub capacity: usize,
 }
@@ -226,6 +228,7 @@ impl Archetype {
         Archetype {
             id: new_id,
             entities: HashMap::new(),
+            ids_to_entity: HashMap::new(),
             columns,
             capacity: DEFAULT_CAPACITY,
         }
@@ -246,16 +249,17 @@ impl Archetype {
             self.capacity = new_cap;
         }
 
-        let entity_index = self.entities.len();
-        self.entities.insert(entity, ArchetypeEntityId(entity_index as u64));
+        let entity_index = ArchetypeEntityId(self.entities.len() as u64);
+        self.entities.insert(entity, entity_index);
+        self.ids_to_entity.insert(entity_index, entity);
 
         bundle.take(|data, type_id, _size| {
             let col = self.get_column_mut(type_id).unwrap();
-            unsafe { col.set_at(entity_index, data, *tick); }
+            unsafe { col.set_at(entity_index.0 as usize, data, *tick); }
             col.len += 1;
         });
         
-        ArchetypeEntityId(entity_index as u64)
+        entity_index
     }
 
     /// Removes an entity from the Archetype and frees its components. Returns the entity record that took its place in the component column.
@@ -286,6 +290,7 @@ impl Archetype {
 
         // safe from the .expect at the start of this method.
         self.entities.remove(&entity).unwrap();
+        self.ids_to_entity.remove(&entity_index).unwrap();
         
         // now change the ArchetypeEntityId to be the index that the moved entity was moved into.
         removed_entity.map(|(e, _a)| (e, entity_index))
@@ -351,14 +356,15 @@ impl Archetype {
             self.capacity = new_cap;
         }
 
-        let entity_index = self.entities.len();
-        self.entities.insert(entity, ArchetypeEntityId(entity_index as u64));
+        let entity_index = ArchetypeEntityId(self.entities.len() as u64);
+        self.entities.insert(entity, entity_index);
+        self.ids_to_entity.insert(entity_index, entity);
 
         for col in self.columns.iter_mut() {
             col.len += 1;
         }
 
-        ArchetypeEntityId(entity_index as u64)
+        entity_index
     }
 
     /// Moves the entity from this archetype into another one.
@@ -401,6 +407,10 @@ impl Archetype {
     pub fn entities(&self) -> &HashMap<Entity, ArchetypeEntityId> {
         &self.entities
     }
+
+    pub fn entity_of_index(&self, id: ArchetypeEntityId) -> Option<Entity> {
+        self.ids_to_entity.get(&id).cloned()
+    }
 }
 
 #[cfg(test)]
@@ -409,7 +419,7 @@ mod tests {
 
     use rand::Rng;
 
-    use crate::{tests::{Vec2, Vec3}, world::{Entity, EntityId}, bundle::Bundle, ComponentInfo, MemoryLayout, DynTypeId, DynamicBundle, Tick};
+    use crate::{bundle::Bundle, tests::{Vec2, Vec3}, ComponentInfo, DynTypeId, DynamicBundle, Entity, EntityId, MemoryLayout, Tick};
 
     use super::Archetype;
 

lyra-ecs/src/command.rs

@@ -0,0 +1,150 @@
+use std::{any::Any, cell::RefMut, collections::VecDeque, ptr::{self, NonNull}};
+
+use crate::{system::FnArgFetcher, Access, Bundle, Entities, Entity, World};
+
+pub trait Command: Any {
+    fn as_any_boxed(self: Box<Self>) -> Box<dyn Any>;
+
+    fn run(self, world: &mut World) -> anyhow::Result<()>;
+}
+
+impl<F> Command for F
+where
+    F: FnOnce(&mut World) -> anyhow::Result<()> + 'static
+{
+    fn as_any_boxed(self: Box<Self>) -> Box<dyn Any> {
+        self
+    }
+
+    fn run(self, world: &mut World) -> anyhow::Result<()> {
+        self(world)
+    }
+}
+
+type RunCommand = unsafe fn(cmd: Box<dyn Command>, world: &mut World) -> anyhow::Result<()>;
+
+#[derive(Default)]
+pub struct CommandQueue(VecDeque<(RunCommand, Box<dyn Command>)>);
+
+pub struct Commands<'a, 'b> {
+    queue: &'b mut CommandQueue,
+    entities: &'a mut Entities,
+}
+
+impl<'a, 'b> Commands<'a, 'b> {
+    pub fn new(queue: &'b mut CommandQueue, world: &'a mut World) -> Self {
+        Self {
+            queue,
+            entities: &mut world.entities,
+        }
+    }
+
+    /// Add a command to the end of the command queue
+    pub fn add<C: Command>(&mut self, cmd: C) {
+        let cmd = Box::new(cmd);
+
+        let run_fn = |cmd: Box<dyn Command>, world: &mut World| {
+            let cmd = cmd.as_any_boxed()
+                .downcast::<C>()
+                .unwrap();
+            
+            cmd.run(world)?;
+
+            Ok(())
+        };
+
+        self.queue.0.push_back((run_fn, cmd));
+    }
+
+    pub fn spawn<B: Bundle + 'static>(&mut self, bundle: B) -> Entity {
+        let e = self.entities.reserve();
+
+        self.add(move |world: &mut World| {
+            world.spawn_into(e, bundle);
+            Ok(())
+        });
+
+        e
+    }
+
+    /// Execute all commands in the queue, in order of insertion
+    pub fn execute(&mut self, world: &mut World) -> anyhow::Result<()> {
+        while let Some((cmd_fn, cmd_ptr)) = self.queue.0.pop_front() {
+            unsafe {
+                cmd_fn(cmd_ptr, world)?;
+            }
+        }
+
+        Ok(())
+    }
+}
+
+impl FnArgFetcher for Commands<'_, '_> {
+    type State = CommandQueue;
+    type Arg<'a, 'state> = Commands<'a, 'state>;
+
+    fn world_access(&self) -> Access {
+        Access::Write
+    }
+
+    unsafe fn get<'a, 'state>(state: &'state mut Self::State, mut world_ptr: ptr::NonNull<World>) -> Self::Arg<'a, 'state> {
+        let world = world_ptr.as_mut();
+        Commands::new(state, world)
+    }
+
+    fn create_state(_: NonNull<World>) -> Self::State {
+        CommandQueue::default()
+    }
+
+    fn apply_deferred<'a>(mut state: Self::State, mut world_ptr: NonNull<World>) {
+        let world = unsafe { world_ptr.as_mut() };
+
+        let mut cmds = Commands::new(&mut state, world);
+        // safety: Commands has a mut borrow only to entities in the world
+        let world = unsafe { world_ptr.as_mut() };
+        cmds.execute(world).unwrap()
+    }
+}
+
+pub fn execute_deferred_commands(world: &mut World, mut commands: RefMut<Commands>) -> anyhow::Result<()> {
+    commands.execute(world)?;
+
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use std::ptr::NonNull;
+
+    use crate::{system::{GraphExecutor, IntoSystem}, tests::Vec2, Commands, DynTypeId, World};
+
+    #[test]
+    fn deferred_commands() {
+        let mut world = World::new();
+        let vecs = vec![Vec2::rand(), Vec2::rand(), Vec2::rand()];
+        world.spawn((vecs[0],));
+        world.spawn((vecs[1],));
+        world.spawn((vecs[2],));
+
+        let spawned_vec = Vec2::rand();
+        
+        let spawned_vec_cl = spawned_vec.clone();
+        let test_sys = move |mut commands: Commands| -> anyhow::Result<()> {
+            commands.spawn((spawned_vec_cl.clone(),));
+
+            Ok(())
+        };
+
+        let mut graph_exec = GraphExecutor::new();
+        graph_exec.insert_system("test", test_sys.into_system(), &[]);
+        graph_exec.execute(NonNull::from(&world), true).unwrap();
+
+        assert_eq!(world.entities.len(), 4);
+        
+        // there's only one archetype
+        let arch = world.archetypes.values().next().unwrap();
+        let col = arch.get_column(DynTypeId::of::<Vec2>()).unwrap();
+        let vec2: &Vec2 = unsafe { col.get(3) };
+        assert_eq!(vec2.clone(), spawned_vec);
+    }
+}

lyra-ecs/src/entity.rs

@@ -0,0 +1,62 @@
+use std::collections::{HashMap, VecDeque};
+
+use crate::Record;
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
+pub struct EntityId(pub u64);
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
+pub struct Entity {
+    pub(crate) id: EntityId,
+    pub(crate) generation: u64,
+}
+
+pub struct Entities {
+    pub(crate) arch_index: HashMap<EntityId, Record>,
+    dead: VecDeque<Entity>,
+    next_id: EntityId,
+}
+
+impl Default for Entities {
+    fn default() -> Self {
+        Self {
+            arch_index: Default::default(),
+            dead: Default::default(),
+            next_id: EntityId(0),
+        }
+    }
+}
+
+impl Entities {
+    pub fn reserve(&mut self) -> Entity {
+        match self.dead.pop_front() {
+            Some(mut e) => {
+                e.generation += 1;
+                e
+            }
+            None => {
+                let new_id = self.next_id;
+                self.next_id.0 += 1;
+
+                Entity {
+                    id: new_id,
+                    generation: 0,
+                }
+            }
+        }
+    }
+
+    /// Returns the number of spawned entities
+    pub fn len(&self) -> usize {
+        self.next_id.0 as usize - self.dead.len()
+    }
+
+    /// Retrieves the Archetype Record for the entity
+    pub(crate) fn entity_record(&self, entity: Entity) -> Option<Record> {
+        self.arch_index.get(&entity.id).cloned()
+    }
+
+    pub(crate) fn insert_entity_record(&mut self, entity: Entity, record: Record) {
+        self.arch_index.insert(entity.id, record);
+    }
+}

lyra-ecs/src/lib.rs

@@ -8,11 +8,19 @@ pub(crate) mod lyra_engine {
 }
 
 pub mod archetype;
+use std::ops::BitOr;
+
 pub use archetype::*;
 
+pub mod entity;
+pub use entity::*;
+
 pub mod world;
 pub use world::*;
 
+pub mod command;
+pub use command::*;
+
 pub mod bundle;
 pub use bundle::*;
 
@@ -34,6 +42,10 @@ pub mod system;
 pub mod tick;
 pub use tick::*;
 
+/// Implements Component for glam math types
+#[cfg(feature = "math")]
+pub mod math;
+
 pub use lyra_ecs_derive::*;
 
 #[cfg(test)]
@@ -44,4 +56,18 @@ pub enum Access {
     None,
     Read,
     Write,
+}
+
+impl BitOr for Access {
+    type Output = Access;
+
+    fn bitor(self, rhs: Self) -> Self::Output {
+        if self == Access::Write || rhs == Access::Write {
+            Access::Write
+        } else if self == Access::Read || rhs == Access::Read {
+            Access::Read
+        } else {
+            Access::None
+        }
+    }
 }

lyra-ecs/src/math.rs

@@ -0,0 +1,20 @@
+use crate::Component;
+
+use lyra_math::{Vec3, Quat, Vec2, Vec4, Mat4, Transform};
+
+macro_rules! impl_external_component {
+    ($type: ident) => {
+        impl Component for $type {
+            fn name() -> &'static str {
+                stringify!($type)
+            }
+        }
+    };
+}
+
+impl_external_component!(Vec2);
+impl_external_component!(Vec3);
+impl_external_component!(Vec4);
+impl_external_component!(Mat4);
+impl_external_component!(Quat);
+impl_external_component!(Transform);

lyra-ecs/src/query/borrow.rs

@@ -221,7 +221,7 @@ impl<T: Component> AsQuery for &mut T {
 mod tests {
     use std::{mem::size_of, marker::PhantomData, ptr::NonNull};
 
-    use crate::{world::{World, Entity, EntityId}, archetype::{Archetype, ArchetypeId}, query::{View, Fetch}, tests::Vec2, bundle::Bundle, DynTypeId, Tick};
+    use crate::{archetype::{Archetype, ArchetypeId}, bundle::Bundle, query::{Fetch, View}, tests::Vec2, world::World, DynTypeId, Entity, EntityId, Tick};
 
     use super::{QueryBorrow, QueryBorrowMut, FetchBorrowMut};
 

lyra-ecs/src/query/entities.rs

@@ -1,4 +1,4 @@
-use crate::{world::{Entity, World}, archetype::Archetype};
+use crate::{archetype::Archetype, world::World, Entity};
 
 use super::{Fetch, Query, AsQuery};
 

lyra-ecs/src/query/view.rs

@@ -131,7 +131,7 @@ impl<'a, Q: Query> ViewOne<'a, Q> {
     }
 
     pub fn get(&self) -> Option<Q::Item<'a>> {
-        if let Some(record) = self.world.entity_index.get(&self.entity) {
+        if let Some(record) = self.world.entities.arch_index.get(&self.entity) {
             let arch = self.world.archetypes.get(&record.id)
                 .expect("An invalid record was specified for an entity");
 

lyra-ecs/src/resource.rs

@@ -6,7 +6,7 @@ impl<T: 'static> ResourceObject for T {}
 
 /// A type erased storage for a Resource.
 pub struct ResourceData {
-    data: Box<RefCell<dyn Any>>,
+    pub(crate) data: Box<RefCell<dyn Any>>,
     type_id: TypeId,
 }
 

lyra-ecs/src/system/batched.rs

@@ -79,6 +79,10 @@ impl System for BatchedSystem {
 
         Ok(())
     }
+    
+    fn execute_deferred(&mut self, _: std::ptr::NonNull<World>) -> anyhow::Result<()> {
+        todo!()
+    }
 }
 
 impl IntoSystem<()> for BatchedSystem {

lyra-ecs/src/system/fn_sys.rs

@@ -1,13 +1,17 @@
-use std::{ptr::NonNull, marker::PhantomData};
+use std::{any::Any, marker::PhantomData, ptr::NonNull};
 
+use paste::paste;
 use crate::{world::World, Access, ResourceObject, query::{Query, View, AsQuery, ResMut, Res}};
 
 use super::{System, IntoSystem};
 
 pub trait FnArgFetcher {
-    type Arg<'a>: FnArg<Fetcher = Self>;
+    /// stores data that persists after an execution of a system
+    type State: 'static;
+    
+    type Arg<'a, 'state>: FnArgFetcher<State = Self::State>;
 
-    fn new() -> Self;
+    fn create_state(world: NonNull<World>) -> Self::State;
 
     /// Return the appropriate world access if this fetcher gets the world directly.
     /// Return [`Access::None`] if you're only fetching components, or resources.
@@ -20,7 +24,10 @@ pub trait FnArgFetcher {
     /// # Safety
     /// The system executor must ensure that on execution of the system, it will be safe to
     /// borrow the world.
-    unsafe fn get<'a>(&mut self, world: NonNull<World>) -> Self::Arg<'a>;
+    unsafe fn get<'a, 'state>(state: &'state mut Self::State, world: NonNull<World>) -> Self::Arg<'a, 'state>;
+
+    /// Apply some action after the system was ran.
+    fn apply_deferred(state: Self::State, world: NonNull<World>);
 }
 
 pub trait FnArg {
@@ -29,8 +36,10 @@ pub trait FnArg {
 
 pub struct FnSystem<F, Args> {
     inner: F,
-    #[allow(dead_code)]
-    args: Args,
+    //#[allow(dead_code)]
+    //args: Args,
+    arg_state: Option<Vec<Box<dyn Any>>>,
+    _marker: PhantomData<Args>,
 }
 
 macro_rules! impl_fn_system_tuple {
@@ -38,47 +47,65 @@ macro_rules! impl_fn_system_tuple {
         #[allow(non_snake_case)]
         impl<F, $($name: FnArgFetcher,)+> System for FnSystem<F, ($($name,)+)>
         where
-            F: for<'a> FnMut($($name::Arg<'a>,)+) -> anyhow::Result<()>,
+            F: for<'a> FnMut($($name::Arg<'a, '_>,)+) -> anyhow::Result<()>,
         {
             fn world_access(&self) -> Access {
                 todo!()
             }
 
             fn execute(&mut self, world: NonNull<World>) -> anyhow::Result<()> {
-                $(let $name = unsafe { $name::new().get(world) };)+
+                unsafe {
+                    paste! {
+                        $(
+                            // get the arg fetcher, create its state, and get the arg
+                            let mut [<state_ $name:lower>]: $name::State = $name::create_state(world);
+                            let [<$name:lower>] = $name::get(&mut [<state_ $name:lower>], world);
+                        )+
+                        
+                        (self.inner)($( [<$name:lower>] ),+)?;
+                        
+                        let mut state = Vec::new();
+                        $(
+                            // type erase the now modified state, and store it
+                            let boxed = Box::new([<state_ $name:lower>]) as Box<dyn Any>;
+                            state.push(boxed);
+                        )+
+
+                        self.arg_state = Some(state);
+                    }
+
+                    Ok(())
+                }
+            }
+
+            fn execute_deferred(&mut self, world: NonNull<World>) -> anyhow::Result<()> {
+                let state = self.arg_state.as_mut().expect("Somehow there was no state");
+                state.reverse();
+
+                $(
+                    let arg_state_box = state.pop()
+                        .expect("Missing expected arg state");
+                    let arg_state = *arg_state_box.downcast::<$name::State>()
+                        .expect("Somehow the state cannot be downcasted from boxed Any");
+                    $name::apply_deferred(arg_state, world);
+                )+
 
-                (self.inner)($($name,)+)?;
-                
                 Ok(())
             }
         }
 
-        /* impl<F, $($name: FnArg,)+> IntoSystem for F
+        impl<F, $($name: FnArgFetcher,)+> IntoSystem<($($name,)+)> for F
         where
             F: FnMut($($name,)+) -> anyhow::Result<()>,
-            F: for<'a> FnMut($(<$name::Fetcher as FnArgFetcher>::Arg<'a>,)+) -> anyhow::Result<()>,
+            F: for<'a> FnMut($($name::Arg<'a, '_>,)+) -> anyhow::Result<()>,
         {
-            type System = FnSystem<F, ($($name::Fetcher,)+)>;
+            type System = FnSystem<F, ($($name,)+)>;
 
             fn into_system(self) -> Self::System {
                 FnSystem {
-                    args: ($($name::Fetcher::new(),)+),
-                    inner: self
-                }
-            }
-        } */
-
-        impl<F, $($name: FnArg,)+> IntoSystem<($($name,)+)> for F
-        where
-            F: FnMut($($name,)+) -> anyhow::Result<()>,
-            F: for<'a> FnMut($(<$name::Fetcher as FnArgFetcher>::Arg<'a>,)+) -> anyhow::Result<()>,
-        {
-            type System = FnSystem<F, ($($name::Fetcher,)+)>;
-
-            fn into_system(self) -> Self::System {
-                FnSystem {
-                    args: ($($name::Fetcher::new(),)+),
-                    inner: self
+                    inner: self,
+                    arg_state: None,
+                    _marker: PhantomData::<($($name,)+)>::default(),
                 }
             }
         }
@@ -103,127 +130,116 @@ impl_fn_system_tuple!{ A, B, C, D, E, F2, G, H, I, J, K, L, M, N, O }
 impl_fn_system_tuple!{ A, B, C, D, E, F2, G, H, I, J, K, L, M, N, O, P }
 
 /// An ArgFetcher implementation for query [`View`]s
-pub struct ViewArgFetcher<Q: AsQuery> {
+/* pub struct ViewArgFetcher<Q: AsQuery> {
     query: Q::Query
 }
 
 impl<'a, Q: AsQuery> FnArg for View<'a, Q> {
     type Fetcher = ViewArgFetcher<Q>;
-}
+} */
 
-impl<Q: AsQuery> FnArgFetcher for ViewArgFetcher<Q> {
-    type Arg<'a> = View<'a, Q>;
-
-    fn new() -> Self {
-        ViewArgFetcher {
-            query: <Q::Query as Query>::new(),
-        }
-    }
+impl<'c, Q> FnArgFetcher for View<'c, Q>
+where
+    Q: AsQuery,
+    <Q as AsQuery>::Query: 'static
+{
+    type State = Q::Query;
+    type Arg<'a, 'state> = View<'a, Q>;
 
     fn world_access(&self) -> Access {
         todo!()
     }
 
-    unsafe fn get<'a>(&mut self, world: NonNull<World>) -> Self::Arg<'a> {
+    unsafe fn get<'a, 'state>(state: &'state mut Self::State, world: NonNull<World>) -> Self::Arg<'a, 'state> {
         let world = &*world.as_ptr();
         let arch = world.archetypes.values().collect();
-        let v = View::new(world, self.query, arch);
+        let v = View::new(world, state.clone(), arch);
 
         v
     }
+
+    fn apply_deferred(_: Self::State, _: NonNull<World>) { }
+    
+    fn create_state(_: NonNull<World>) -> Self::State { 
+        <Q::Query as Query>::new()
+    }
 }
 
 /// An ArgFetcher implementation for borrowing the [`World`].
-pub struct WorldArgFetcher;
+/* pub struct WorldArgFetcher;
 
 impl<'a> FnArg for &'a World {
     type Fetcher = WorldArgFetcher;
-}
+} */
 
-impl FnArgFetcher for WorldArgFetcher {
-    type Arg<'a> = &'a World;
-
-    fn new() -> Self {
-        WorldArgFetcher
-    }
+impl FnArgFetcher for &'_ World {
+    type State = ();
+    type Arg<'a, 'state> = &'a World;
 
     fn world_access(&self) -> Access {
         Access::Read
     }
 
-    unsafe fn get<'a>(&mut self, world: NonNull<World>) -> Self::Arg<'a> {
+    unsafe fn get<'a, 'state>(_: &'state mut Self::State, world: NonNull<World>) -> Self::Arg<'a, 'state> {
         &*world.as_ptr()
     }
 
+    fn apply_deferred(_: Self::State, _: NonNull<World>) { }
+    
+    fn create_state(_: NonNull<World>) -> Self::State { () }
 }
 
-/// An ArgFetcher implementation for mutably borrowing the [`World`].
-pub struct WorldMutArgFetcher;
-
-impl<'a> FnArg for &'a mut World {
-    type Fetcher = WorldMutArgFetcher;
-}
-
-impl FnArgFetcher for WorldMutArgFetcher {
-    type Arg<'a> = &'a mut World;
-
-    fn new() -> Self {
-        WorldMutArgFetcher
-    }
+impl FnArgFetcher for &'_ mut World {
+    type State = ();
+    type Arg<'a, 'state> = &'a mut World;
 
     fn world_access(&self) -> Access {
         Access::Write
     }
 
-    unsafe fn get<'a>(&mut self, world: NonNull<World>) -> Self::Arg<'a> {
+    unsafe fn get<'a, 'state>(_: &'state mut Self::State, world: NonNull<World>) -> Self::Arg<'a, 'state> {
         &mut *world.as_ptr()
     }
+
+    fn apply_deferred(_: Self::State, _: NonNull<World>) { }
+    
+    fn create_state(_: NonNull<World>) -> Self::State { () }
 }
 
-pub struct ResourceArgFetcher<R: ResourceObject> {
+/* pub struct ResourceArgFetcher<R: ResourceObject> {
     phantom: PhantomData<fn() -> R>
 }
 
 impl<'a, R: ResourceObject> FnArg for Res<'a, R> {
     type Fetcher = ResourceArgFetcher<R>;
-}
+} */
 
-impl<R: ResourceObject> FnArgFetcher for ResourceArgFetcher<R> {
-    type Arg<'a> = Res<'a, R>;
+impl<R: ResourceObject> FnArgFetcher for Res<'_, R> {
+    type State = ();
+    type Arg<'a, 'state> = Res<'a, R>;
 
-    fn new() -> Self {
-        ResourceArgFetcher {
-            phantom: PhantomData
-        }
-    }
-
-    unsafe fn get<'a>(&mut self, world: NonNull<World>) -> Self::Arg<'a> {
+    unsafe fn get<'a, 'state>(_: &'state mut Self::State, world: NonNull<World>) -> Self::Arg<'a, 'state> {
         let world = world.as_ref();
         Res(world.get_resource::<R>())
     }
+
+    fn apply_deferred(_: Self::State, _: NonNull<World>) { }
+    
+    fn create_state(_: NonNull<World>) -> Self::State { () }
 }
 
-pub struct ResourceMutArgFetcher<R: ResourceObject> {
-    phantom: PhantomData<fn() -> R>
-}
+impl<R: ResourceObject> FnArgFetcher for ResMut<'_, R> {
+    type State = ();
+    type Arg<'a, 'state> = ResMut<'a, R>;
 
-impl<'a, R: ResourceObject> FnArg for ResMut<'a, R> {
-    type Fetcher = ResourceMutArgFetcher<R>;
-}
-
-impl<R: ResourceObject> FnArgFetcher for ResourceMutArgFetcher<R> {
-    type Arg<'a> = ResMut<'a, R>;
-
-    fn new() -> Self {
-        ResourceMutArgFetcher {
-            phantom: PhantomData
-        }
-    }
-
-    unsafe fn get<'a>(&mut self, world: NonNull<World>) -> Self::Arg<'a> {
+    unsafe fn get<'a, 'state>(_: &'state mut Self::State, world: NonNull<World>) -> Self::Arg<'a, 'state> {
         let world = world.as_ref();
         ResMut(world.get_resource_mut::<R>())
     }
+
+    fn apply_deferred(_: Self::State, _: NonNull<World>) { }
+    
+    fn create_state(_: NonNull<World>) -> Self::State { () }
 }
 
 #[cfg(test)]

lyra-ecs/src/system/graph.rs

@@ -2,14 +2,16 @@ use std::{collections::{HashMap, VecDeque, HashSet}, ptr::NonNull};
 
 use super::System;
 
-use crate::world::World;
+use crate::{world::World, CommandQueue, Commands};
 
 #[derive(thiserror::Error, Debug)]
 pub enum GraphExecutorError {
     #[error("could not find a system's dependency named `{0}`")]
     MissingSystem(String),
     #[error("system `{0}` returned with an error: `{1}`")]
-    SystemError(String, anyhow::Error)
+    SystemError(String, anyhow::Error),
+    #[error("a command returned with an error: `{0}`")]
+    Command(anyhow::Error)
 }
 
 /// A single system in the graph.
@@ -56,7 +58,7 @@ impl GraphExecutor {
     }
 
     /// Executes the systems in the graph
-    pub fn execute(&mut self, world: NonNull<World>, stop_on_error: bool) -> Result<Vec<GraphExecutorError>, GraphExecutorError> {
+    pub fn execute(&mut self, mut world_ptr: NonNull<World>, stop_on_error: bool) -> Result<Vec<GraphExecutorError>, GraphExecutorError> {
         let mut stack = VecDeque::new();
         let mut visited = HashSet::new();
 
@@ -69,7 +71,7 @@ impl GraphExecutor {
         while let Some(node) = stack.pop_front() {
             let system = self.systems.get_mut(node.as_str()).unwrap();
 
-            if let Err(e) = system.system.execute(world)
+            if let Err(e) = system.system.execute(world_ptr)
                     .map_err(|e| GraphExecutorError::SystemError(node, e)) {
                 if stop_on_error {
                     return Err(e);
@@ -78,6 +80,36 @@ impl GraphExecutor {
                 possible_errors.push(e);
                 unimplemented!("Cannot resume topological execution from error"); // TODO: resume topological execution from error
             }
+
+            if let Err(e) = system.system.execute_deferred(world_ptr)
+                    .map_err(|e| GraphExecutorError::Command(e)) {
+
+                if stop_on_error {
+                    return Err(e);
+                }
+
+                possible_errors.push(e);
+                unimplemented!("Cannot resume topological execution from error"); // TODO: resume topological execution from error
+            }
+
+            let world = unsafe { world_ptr.as_mut() };
+            if let Some(mut queue) = world.try_get_resource_mut::<CommandQueue>() {
+                // Safety: Commands only borrows world.entities when adding commands
+                let world = unsafe { world_ptr.as_mut() };
+                let mut commands = Commands::new(&mut queue, world);
+
+                let world = unsafe { world_ptr.as_mut() };
+                if let Err(e) = commands.execute(world)
+                        .map_err(|e| GraphExecutorError::Command(e)) {
+
+                    if stop_on_error {
+                        return Err(e);
+                    }
+    
+                    possible_errors.push(e);
+                    unimplemented!("Cannot resume topological execution from error"); // TODO: resume topological execution from error
+                }
+            }
         }
 
         Ok(possible_errors)

lyra-ecs/src/system/mod.rs

@@ -27,6 +27,8 @@ pub trait System {
         let _ = world;
         Ok(())
     }
+
+    fn execute_deferred(&mut self, world: NonNull<World>) -> anyhow::Result<()>;
 }
 
 pub trait IntoSystem<T> {

lyra-ecs/src/world.rs

@@ -1,21 +1,12 @@
-use std::{collections::{HashMap, VecDeque}, any::TypeId, cell::{Ref, RefMut}, ptr::NonNull};
+use std::{any::TypeId, cell::{Ref, RefMut}, collections::HashMap, ptr::NonNull};
 
-use crate::{archetype::{ArchetypeId, Archetype}, bundle::Bundle, query::{Query, ViewIter, View, AsQuery}, resource::ResourceData, query::{dynamic::DynamicView, ViewOne}, ComponentInfo, DynTypeId, TickTracker, Tick};
-
-#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
-pub struct EntityId(pub u64);
+use crate::{archetype::{Archetype, ArchetypeId}, bundle::Bundle, query::{dynamic::DynamicView, AsQuery, Query, View, ViewIter, ViewOne}, resource::ResourceData, ComponentInfo, DynTypeId, Entities, Entity, ResourceObject, Tick, TickTracker};
 
 /// The id of the entity for the Archetype.
 /// The Archetype struct uses this as the index in the component columns
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
 pub struct ArchetypeEntityId(pub u64);
 
-#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
-pub struct Entity {
-    pub(crate) id: EntityId,
-    pub(crate) generation: u64,
-}
-
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
 pub struct Record {
     pub id: ArchetypeId,
@@ -25,11 +16,9 @@ pub struct Record {
 pub struct World {
     pub(crate) archetypes: HashMap<ArchetypeId, Archetype>,
     next_archetype_id: ArchetypeId,
-    pub(crate) entity_index: HashMap<EntityId, Record>,
-    dead_entities: VecDeque<Entity>,
-    next_entity_id: EntityId,
     resources: HashMap<TypeId, ResourceData>,
     tracker: TickTracker,
+    pub(crate) entities: Entities,
 }
 
 impl Default for World {
@@ -37,11 +26,9 @@ impl Default for World {
         Self {
             archetypes: HashMap::new(),
             next_archetype_id: ArchetypeId(0),
-            entity_index: HashMap::new(),
-            dead_entities: VecDeque::new(),
-            next_entity_id: EntityId(0),
             resources: HashMap::new(),
             tracker: TickTracker::new(),
+            entities: Entities::default(),
         }
     }
 }
@@ -51,32 +38,30 @@ impl World {
         Self::default()
     }
 
-    /// Gets a new Entity, will recycle dead entities and increment their generation.
-    fn get_new_entity(&mut self) -> Entity {
-        match self.dead_entities.pop_front() {
-            Some(mut e) => {
-                e.generation += 1;
-                e
-            },
-            None => {
-                let new_id = self.next_entity_id;
-                self.next_entity_id.0 += 1;
-
-                Entity {
-                    id: new_id,
-                    generation: 0,
-                }
-            }
-        }
+    /// Reserves an entity in the world
+    pub fn reserve_entity(&mut self) -> Entity {
+        self.entities.reserve()
     }
 
-    /// Spawns a new entity and inserts the component `bundle` into it.
     pub fn spawn<B>(&mut self, bundle: B) -> Entity
+    where
+        B: Bundle
+    {
+        let new_entity = self.reserve_entity();
+        self.spawn_into(new_entity, bundle);
+        new_entity
+    }
+
+    /// Spawn the components into a reserved entity. Only do this with entities that
+    /// were 'reserved' with [`World::reserve`]
+    ///
+    /// # Safety
+    /// Do not use this method with an entity that is currently alive, it WILL cause undefined behavior.
+    pub fn spawn_into<B>(&mut self, entity: Entity, bundle: B)
     where
         B: Bundle
     {
         let bundle_types = bundle.type_ids();
-        let new_entity = self.get_new_entity();
 
         let tick = self.tick();
 
@@ -86,7 +71,11 @@ impl World {
             .find(|a| a.is_archetype_for(&bundle_types));
 
         if let Some(archetype) = archetype {
-            let arche_idx = archetype.add_entity(new_entity, bundle, &tick);
+            // make at just one check to ensure you're not spawning twice
+            debug_assert!(!archetype.entities.contains_key(&entity),
+                "You attempted to spawn components into an entity that already exists!");
+
+            let arche_idx = archetype.add_entity(entity, bundle, &tick);
 
             // Create entity record and store it
             let record = Record {
@@ -94,14 +83,14 @@ impl World {
                 index: arche_idx,
             };
             
-            self.entity_index.insert(new_entity.id, record);
+            self.entities.insert_entity_record(entity, record);
         }
         // create a new archetype if one isn't found
         else {
             // create archetype
             let new_arch_id = self.next_archetype_id.increment();
             let mut archetype = Archetype::from_bundle_info(new_arch_id, bundle.info());
-            let entity_arch_id = archetype.add_entity(new_entity, bundle, &tick);
+            let entity_arch_id = archetype.add_entity(entity, bundle, &tick);
 
             // store archetype
             self.archetypes.insert(new_arch_id, archetype);
@@ -113,27 +102,25 @@ impl World {
                 index: entity_arch_id,
             };
 
-            self.entity_index.insert(new_entity.id, record);
+            self.entities.insert_entity_record(entity, record);
         }
-        
-        new_entity
     }
 
     /// Despawn an entity from the World
     pub fn despawn(&mut self, entity: Entity) {
         // Tick the tracker if the entity is spawned. This is done here instead of the `if let`
         // below due to the borrow checker complaining about multiple mutable borrows to self.
-        let tick = if self.entity_index.contains_key(&entity.id) {
+        let tick = if self.entities.arch_index.contains_key(&entity.id) {
             Some(self.tick())
         } else { None };
 
-        if let Some(record) = self.entity_index.get_mut(&entity.id) {
+        if let Some(record) = self.entities.arch_index.get_mut(&entity.id) {
             let tick = tick.unwrap();
             let arch = self.archetypes.get_mut(&record.id).unwrap();
 
             if let Some((moved, new_index)) = arch.remove_entity(entity, &tick) {
                 // replace the archetype index of the moved index with its new index.
-                self.entity_index.get_mut(&moved.id).unwrap().index = new_index;
+                self.entities.arch_index.get_mut(&moved.id).unwrap().index = new_index;
             }
         }
     }
@@ -152,7 +139,7 @@ impl World {
 
         let tick = self.tick();
 
-        let record = *self.entity_index.get(&entity.id).unwrap();
+        let record = self.entities.entity_record(entity).unwrap();
         let current_arch = self.archetypes.get(&record.id).unwrap();
         
         let mut col_types: Vec<DynTypeId> = current_arch.columns.iter().map(|c| c.info.type_id).collect();
@@ -188,7 +175,7 @@ impl World {
                 id: arch.id,
                 index: res_index,
             };
-            self.entity_index.insert(entity.id, new_record);
+            self.entities.insert_entity_record(entity, new_record);
         } else {
             let new_arch_id = self.next_archetype_id.increment();
             let mut archetype = Archetype::from_bundle_info(new_arch_id, col_infos);
@@ -202,13 +189,23 @@ impl World {
                 index: entity_arch_id,
             };
 
-            self.entity_index.insert(entity.id, record);
+            self.entities.insert_entity_record(entity, record);
         }
 
         let current_arch = self.archetypes.get_mut(&record.id).unwrap();
         current_arch.remove_entity(entity, &tick);
     }
 
+    pub fn entity_archetype(&self, entity: Entity) -> Option<&Archetype> {
+        self.entities.entity_record(entity)
+            .and_then(|record| self.archetypes.get(&record.id))
+    }
+
+    pub fn entity_archetype_mut(&mut self, entity: Entity) -> Option<&mut Archetype> {
+        self.entities.entity_record(entity)
+            .and_then(|record| self.archetypes.get_mut(&record.id))
+    }
+
     /// View into the world for a set of entities that satisfy the queries.
     pub fn view_iter<T: 'static + AsQuery>(&self) -> ViewIter<T::Query> {
         let archetypes = self.archetypes.values().collect();
@@ -245,15 +242,29 @@ impl World {
             .get_mut()
     }
 
+    /// Get a resource from the world, or insert it into the world as its default.
+    pub fn get_resource_or_default<T: Default + 'static>(&mut self) -> RefMut<T>
+    {
+        self.resources.entry(TypeId::of::<T>())
+            .or_insert_with(|| ResourceData::new(T::default()))
+            .get_mut()
+    }
+
     /// Gets a resource from the World.
     /// 
     /// Will panic if the resource is not in the world. See [`try_get_resource`] for
     /// a function that returns an option.
     pub fn get_resource<T: 'static>(&self) -> Ref<T> {
-        self.resources.get(&TypeId::of::<T>()).unwrap()
+        self.resources.get(&TypeId::of::<T>())
+            .expect(&format!("World is missing resource of type '{}'", std::any::type_name::<T>()))
             .get()
     }
 
+    /// Returns boolean indicating if the World contains a resource of type `T`.
+    pub fn has_resource<T: 'static>(&self) -> bool {
+        self.resources.contains_key(&TypeId::of::<T>())
+    }
+
     /// Attempts to get a resource from the World.
     /// 
     /// Returns `None` if the resource was not found.
@@ -267,7 +278,8 @@ impl World {
     /// Will panic if the resource is not in the world. See [`try_get_resource_mut`] for
     /// a function that returns an option.
     pub fn get_resource_mut<T: 'static>(&self) -> RefMut<T> {
-        self.resources.get(&TypeId::of::<T>()).unwrap()
+        self.resources.get(&TypeId::of::<T>())
+            .expect(&format!("World is missing resource of type '{}'", std::any::type_name::<T>()))
             .get_mut()
     }
 
@@ -296,6 +308,12 @@ impl World {
     pub fn tick_tracker(&self) -> &TickTracker {
         &self.tracker
     }
+
+    /// Attempts to find a resource in the world and returns a NonNull pointer to it
+    pub unsafe fn try_get_resource_ptr<T: ResourceObject>(&self) -> Option<NonNull<T>> {
+        self.resources.get(&TypeId::of::<T>())
+            .map(|d| unsafe { NonNull::new_unchecked(d.data.as_ptr() as *mut T) })
+    }
 }
 
 #[cfg(test)]
@@ -348,7 +366,7 @@ mod tests {
 
         world.despawn(middle_en);
 
-        let record = world.entity_index.get(&last_en.id).unwrap();
+        let record = world.entities.entity_record(last_en).unwrap();
         assert_eq!(record.index.0, 1);
     }
 

lyra-game/Cargo.toml

@@ -5,8 +5,9 @@ edition = "2021"
 
 [dependencies]
 lyra-resource = { path = "../lyra-resource" }
-lyra-ecs = { path = "../lyra-ecs" }
-lyra-reflect = { path = "../lyra-reflect" }
+lyra-ecs = { path = "../lyra-ecs", features = [ "math" ] }
+lyra-reflect = { path = "../lyra-reflect", features = [ "math" ] }
+lyra-math = { path = "../lyra-math" }
 
 winit = "0.28.1"
 tracing = "0.1.37"

lyra-game/src/delta_time.rs

@@ -1,10 +1,11 @@
 use instant::Instant;
 use lyra_ecs::{Component, world::World};
+use lyra_reflect::Reflect;
 
 use crate::{plugin::Plugin, game::GameStages};
 
-#[derive(Clone, Component)]
-pub struct DeltaTime(f32, Option<Instant>);
+#[derive(Clone, Component, Default, Reflect)]
+pub struct DeltaTime(f32, #[reflect(skip)] Option<Instant>);
 
 impl std::ops::Deref for DeltaTime {
     type Target = f32;
@@ -36,7 +37,7 @@ pub struct DeltaTimePlugin;
 
 impl Plugin for DeltaTimePlugin {
     fn setup(&self, game: &mut crate::game::Game) {
-        game.world().add_resource(DeltaTime(0.0, None));
+        game.world_mut().add_resource(DeltaTime(0.0, None));
         game.add_system_to_stage(GameStages::First, "delta_time", delta_time_system, &[]);
     }
 }

lyra-game/src/events.rs

@@ -78,6 +78,6 @@ pub struct EventsPlugin;
 
 impl Plugin for EventsPlugin {
     fn setup(&self, game: &mut crate::game::Game) {
-        game.world().add_resource(EventQueue::new());
+        game.world_mut().add_resource(EventQueue::new());
     }
 }

lyra-game/src/game.rs

@@ -246,11 +246,17 @@ impl Game {
     }
 
     /// Get the world of this game
-    pub fn world(&mut self) -> &mut World {
+    pub fn world_mut(&mut self) -> &mut World {
         // world is always `Some`, so unwrapping is safe
         self.world.as_mut().unwrap()
     }
 
+    /// Get the world of this game
+    pub fn world(&self) -> &World {
+        // world is always `Some`, so unwrapping is safe
+        self.world.as_ref().unwrap()
+    }
+
     /// Add a system to the ecs world
     pub fn with_system<S, A>(&mut self, name: &str, system: S, depends: &[&str]) -> &mut Self
     where
@@ -313,12 +319,14 @@ impl Game {
         self
     }
 
-    /// Add a plugin to the game. These will be executed before the window is initiated and opened
+    /// Add a plugin to the game. These are executed as they are added.
     pub fn with_plugin<P>(&mut self, plugin: P) -> &mut Self
     where
         P: Plugin + 'static
     {
-        self.plugins.push_back(Box::new(plugin));
+        let plugin = Box::new(plugin);
+        plugin.as_ref().setup(self);
+        self.plugins.push_back(plugin);
 
         self
     }
@@ -339,16 +347,12 @@ impl Game {
         tracing_subscriber::registry()
             .with(fmt::layer().with_writer(stdout_layer))
             .with(filter::Targets::new()
-                .with_target("lyra_engine", Level::TRACE)
-                .with_target("wgpu_core", Level::WARN)
-                .with_default(Level::DEBUG))
+                // done by prefix, so it includes all lyra subpackages
+                .with_target("lyra", Level::DEBUG)
+                .with_target("wgpu", Level::WARN)
+                .with_default(Level::INFO))
             .init();
 
-        // setup all the plugins
-        while let Some(plugin) = self.plugins.pop_front() {
-            plugin.as_ref().setup(self);
-        }
-
         let world = self.world.take().unwrap_or_default();
 
         // run startup systems

lyra-game/src/input/action.rs

@@ -2,6 +2,7 @@ use std::{collections::HashMap, ops::Deref, hash::{Hash, DefaultHasher, Hasher},
 
 use glam::Vec2;
 use lyra_ecs::world::World;
+use lyra_reflect::Reflect;
 
 use crate::{plugin::Plugin, game::GameStages, EventQueue};
 
@@ -213,7 +214,7 @@ impl Action {
 }
 
 #[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash)]
-pub struct LayoutId(u32);
+pub struct LayoutId(pub u32);
 
 impl From<u32> for LayoutId {
     fn from(value: u32) -> Self {
@@ -240,7 +241,7 @@ impl Layout {
 }
 
 #[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash)]
-pub struct ActionMappingId(u32);
+pub struct ActionMappingId(pub u32);
 
 impl From<u32> for ActionMappingId {
     fn from(value: u32) -> Self {
@@ -264,6 +265,10 @@ impl ActionMapping {
         }
     }
 
+    pub fn builder(layout: LayoutId, id: ActionMappingId) -> ActionMappingBuilder {
+        ActionMappingBuilder::new(ActionMapping::new(layout, id))
+    }
+
     /// Creates a binding for the action.
     /// 
     /// If the action is not in this layout, this will panic!
@@ -271,7 +276,7 @@ impl ActionMapping {
     /// Parameters:
     /// * `action` - The label corresponding to the action in this Layout.
     /// * `bind` - The Binding to add to the Action.
-    pub fn bind<L>(mut self, action: L, bindings: &[Binding]) -> Self
+    pub fn bind<L>(&mut self, action: L, bindings: &[Binding]) -> &mut Self
     where
         L: ActionLabel
     {
@@ -283,32 +288,48 @@ impl ActionMapping {
         self
     }
 
-    /// Creates multiple binding for the action.
-    /// 
-    /// If the action is not in this layout, this will panic!
-    /// 
-    /// Parameters:
-    /// * `action_label` - The label corresponding to the action in this Layout.
-    /// * `bindings` - The list of Bindings to add to the Action.
-    /* pub fn add_bindings(&mut self, action_label: String, bindings: &[Binding]) -> &mut Self {
-        let mut bindings = bindings.to_vec();
-        let action_binds = self.action_binds.entry(action_label)
-            .or_insert_with(Vec::new);
-        action_binds.append(&mut bindings);
-
-        self
-    } */
-
     pub fn finish(self) -> Self {
         self
     }
 }
 
-#[derive(Clone, Default)]
+pub struct ActionMappingBuilder {
+    mapping: ActionMapping,
+}
+
+impl ActionMappingBuilder {
+    fn new(mapping: ActionMapping) -> Self {
+        Self {
+            mapping,
+        }
+    }
+
+    pub fn bind<L>(mut self, action: L, bindings: &[Binding]) -> Self
+    where
+        L: ActionLabel
+    {
+        let mut bindings = bindings.to_vec();
+
+        let action_binds = self.mapping.action_binds.entry(action.label_hash()).or_default();
+        action_binds.append(&mut bindings);
+
+        self
+    }
+
+    pub fn finish(self) -> ActionMapping {
+        self.mapping
+    }
+}
+
+#[derive(Clone, Default, Reflect)]
 pub struct ActionHandler {
+    #[reflect(skip)] // TODO: dont just skip all these
     pub actions: HashMap<u64, Action>,
+    #[reflect(skip)]
     pub layouts: HashMap<LayoutId, Layout>,
+    #[reflect(skip)]
     pub current_layout: LayoutId,
+    #[reflect(skip)]
     pub current_mapping: ActionMappingId,
 }
 
@@ -317,26 +338,31 @@ impl ActionHandler {
         Self::default()
     }
 
-    pub fn add_layout(mut self, id: LayoutId) -> Self {
-        self.layouts.insert(id, Layout::new());
-
-        self
+    pub fn builder() -> ActionHandlerBuilder {
+        ActionHandlerBuilder::default()
     }
 
-    pub fn add_action<L>(mut self, label: L, action: Action) -> Self
+    pub fn add_layout(&mut self, id: LayoutId) {
+        self.layouts.insert(id, Layout::new());
+    }
+
+    pub fn action<L>(&self, label: L) -> Option<&Action>
+    where
+        L: ActionLabel
+    {
+        self.actions.get(&label.label_hash())
+    }
+
+    pub fn add_action<L>(&mut self, label: L, action: Action)
     where
         L: ActionLabel
     {
         self.actions.insert(label.label_hash(), action);
-
-        self
     }
 
-    pub fn add_mapping(mut self, mapping: ActionMapping) -> Self {
+    pub fn add_mapping(&mut self, mapping: ActionMapping) {
         let layout = self.layouts.get_mut(&mapping.layout).unwrap();
         layout.add_mapping(mapping);
-
-        self
     }
 
     /// Returns true if the action is pressed (or was just pressed).
@@ -443,6 +469,43 @@ impl ActionHandler {
     }
 }
 
+#[derive(Default)]
+pub struct ActionHandlerBuilder {
+    handler: ActionHandler,
+}
+
+impl ActionHandlerBuilder {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn add_layout(mut self, id: LayoutId) -> Self {
+        self.handler.layouts.insert(id, Layout::new());
+
+        self
+    }
+
+    pub fn add_action<L>(mut self, label: L, action: Action) -> Self
+    where
+        L: ActionLabel
+    {
+        self.handler.actions.insert(label.label_hash(), action);
+
+        self
+    }
+
+    pub fn add_mapping(mut self, mapping: ActionMapping) -> Self {
+        let layout = self.handler.layouts.get_mut(&mapping.layout).unwrap();
+        layout.add_mapping(mapping);
+
+        self
+    }
+
+    pub fn finish(self) -> ActionHandler {
+        self.handler
+    }
+}
+
 fn actions_system(world: &mut World) -> anyhow::Result<()> {
     let keys = world.try_get_resource::<InputButtons<KeyCode>>()
         .map(|r| r.deref().clone());

lyra-game/src/input/mod.rs

@@ -11,4 +11,182 @@ pub mod buttons;
 pub use buttons::*;
 
 pub mod action;
-pub use action::*;
+pub use action::*;
+
+pub type KeyCode = winit::event::VirtualKeyCode;
+
+/// Parses a [`KeyCode`] from a [`&str`].
+/// 
+/// There are some changes to a few keycodes. All the number keys `Key1`, `Key2`, etc., have
+/// the `Key` prefix removed; so they are expected to be `1`, `2`, etc.
+pub fn keycode_from_str(s: &str) -> Option<KeyCode> {
+    let s = s.to_lowercase();
+    let s = s.as_str();
+    
+    match s {
+        "1" => Some(KeyCode::Key1),
+        "2" => Some(KeyCode::Key2),
+        "3" => Some(KeyCode::Key3),
+        "4" => Some(KeyCode::Key4),
+        "5" => Some(KeyCode::Key5),
+        "6" => Some(KeyCode::Key6),
+        "7" => Some(KeyCode::Key7),
+        "8" => Some(KeyCode::Key8),
+        "9" => Some(KeyCode::Key9),
+        "0" => Some(KeyCode::Key0),
+        "a" => Some(KeyCode::A),
+        "b" => Some(KeyCode::B),
+        "c" => Some(KeyCode::C),
+        "d" => Some(KeyCode::D),
+        "e" => Some(KeyCode::E),
+        "f" => Some(KeyCode::F),
+        "g" => Some(KeyCode::G),
+        "h" => Some(KeyCode::H),
+        "i" => Some(KeyCode::I),
+        "j" => Some(KeyCode::J),
+        "k" => Some(KeyCode::K),
+        "l" => Some(KeyCode::L),
+        "m" => Some(KeyCode::M),
+        "n" => Some(KeyCode::N),
+        "o" => Some(KeyCode::O),
+        "p" => Some(KeyCode::P),
+        "q" => Some(KeyCode::Q),
+        "r" => Some(KeyCode::R),
+        "s" => Some(KeyCode::S),
+        "t" => Some(KeyCode::T),
+        "u" => Some(KeyCode::U),
+        "v" => Some(KeyCode::V),
+        "w" => Some(KeyCode::W),
+        "x" => Some(KeyCode::X),
+        "y" => Some(KeyCode::Y),
+        "z" => Some(KeyCode::Z),
+        "escape" => Some(KeyCode::Escape),
+        "f1" => Some(KeyCode::F1),
+        "f2" => Some(KeyCode::F2),
+        "f3" => Some(KeyCode::F3),
+        "f4" => Some(KeyCode::F4),
+        "f5" => Some(KeyCode::F5),
+        "f6" => Some(KeyCode::F6),
+        "f7" => Some(KeyCode::F7),
+        "f8" => Some(KeyCode::F8),
+        "f9" => Some(KeyCode::F9),
+        "f10" => Some(KeyCode::F10),
+        "f11" => Some(KeyCode::F11),
+        "f12" => Some(KeyCode::F12),
+        "f13" => Some(KeyCode::F13),
+        "f14" => Some(KeyCode::F14),
+        "f15" => Some(KeyCode::F15),
+        "f16" => Some(KeyCode::F16),
+        "f17" => Some(KeyCode::F17),
+        "f18" => Some(KeyCode::F18),
+        "f19" => Some(KeyCode::F19),
+        "f20" => Some(KeyCode::F20),
+        "f21" => Some(KeyCode::F21),
+        "f22" => Some(KeyCode::F22),
+        "f23" => Some(KeyCode::F23),
+        "f24" => Some(KeyCode::F24),
+        "snapshot" => Some(KeyCode::Snapshot),
+        "scroll" => Some(KeyCode::Scroll),
+        "pause" => Some(KeyCode::Pause),
+        "insert" => Some(KeyCode::Insert),
+        "home" => Some(KeyCode::Home),
+        "delete" => Some(KeyCode::Delete),
+        "end" => Some(KeyCode::End),
+        "pagedown" => Some(KeyCode::PageDown),
+        "pageup" => Some(KeyCode::PageUp),
+        "left" => Some(KeyCode::Left),
+        "up" => Some(KeyCode::Up),
+        "right" => Some(KeyCode::Right),
+        "down" => Some(KeyCode::Down),
+        "back" => Some(KeyCode::Back),
+        "return" => Some(KeyCode::Return),
+        "space" => Some(KeyCode::Space),
+        "compose" => Some(KeyCode::Compose),
+        "caret" => Some(KeyCode::Caret),
+        "numlock" => Some(KeyCode::Numlock),
+        "numpad0" => Some(KeyCode::Numpad0),
+        "numpad1" => Some(KeyCode::Numpad1),
+        "numpad2" => Some(KeyCode::Numpad2),
+        "numpad3" => Some(KeyCode::Numpad3),
+        "numpad4" => Some(KeyCode::Numpad4),
+        "numpad5" => Some(KeyCode::Numpad5),
+        "numpad6" => Some(KeyCode::Numpad6),
+        "numpad7" => Some(KeyCode::Numpad7),
+        "numpad8" => Some(KeyCode::Numpad8),
+        "numpad9" => Some(KeyCode::Numpad9),
+        "numpadadd" => Some(KeyCode::NumpadAdd),
+        "numpaddivide" => Some(KeyCode::NumpadDivide),
+        "numpaddecimal" => Some(KeyCode::NumpadDecimal),
+        "numpadcomma" => Some(KeyCode::NumpadComma),
+        "numpadenter" => Some(KeyCode::NumpadEnter),
+        "numpadequals" => Some(KeyCode::NumpadEquals),
+        "numpadmultiply" => Some(KeyCode::NumpadMultiply),
+        "numpadsubtract" => Some(KeyCode::NumpadSubtract),
+        "abntc1" => Some(KeyCode::AbntC1),
+        "abntc2" => Some(KeyCode::AbntC2),
+        "apostrophe" => Some(KeyCode::Apostrophe),
+        "apps" => Some(KeyCode::Apps),
+        "asterisk" => Some(KeyCode::Asterisk),
+        "at" => Some(KeyCode::At),
+        "ax" => Some(KeyCode::Ax),
+        "backslash" => Some(KeyCode::Backslash),
+        "calculator" => Some(KeyCode::Calculator),
+        "capital" => Some(KeyCode::Capital),
+        "colon" => Some(KeyCode::Colon),
+        "comma" => Some(KeyCode::Comma),
+        "convert" => Some(KeyCode::Convert),
+        "equals" => Some(KeyCode::Equals),
+        "grave" => Some(KeyCode::Grave),
+        "kana" => Some(KeyCode::Kana),
+        "kanji" => Some(KeyCode::Kanji),
+        "lalt" => Some(KeyCode::LAlt),
+        "lbracket" => Some(KeyCode::LBracket),
+        "lcontrol" => Some(KeyCode::LControl),
+        "lshift" => Some(KeyCode::LShift),
+        "lwin" => Some(KeyCode::LWin),
+        "mail" => Some(KeyCode::Mail),
+        "mediaselect" => Some(KeyCode::MediaSelect),
+        "mediastop" => Some(KeyCode::MediaStop),
+        "minus" => Some(KeyCode::Minus),
+        "mute" => Some(KeyCode::Mute),
+        "mycomputer" => Some(KeyCode::MyComputer),
+        "navigateforward" => Some(KeyCode::NavigateForward),
+        "navigatebackward" => Some(KeyCode::NavigateBackward),
+        "nexttrack" => Some(KeyCode::NextTrack),
+        "noconvert" => Some(KeyCode::NoConvert),
+        "oem102" => Some(KeyCode::OEM102),
+        "period" => Some(KeyCode::Period),
+        "playpause" => Some(KeyCode::PlayPause),
+        "plus" => Some(KeyCode::Plus),
+        "power" => Some(KeyCode::Power),
+        "prevtrack" => Some(KeyCode::PrevTrack),
+        "ralt" => Some(KeyCode::RAlt),
+        "rbracket" => Some(KeyCode::RBracket),
+        "rcontrol" => Some(KeyCode::RControl),
+        "rshift" => Some(KeyCode::RShift),
+        "rwin" => Some(KeyCode::RWin),
+        "semicolon" => Some(KeyCode::Semicolon),
+        "slash" => Some(KeyCode::Slash),
+        "sleep" => Some(KeyCode::Sleep),
+        "stop" => Some(KeyCode::Stop),
+        "sysrq" => Some(KeyCode::Sysrq),
+        "tab" => Some(KeyCode::Tab),
+        "underline" => Some(KeyCode::Underline),
+        "unlabeled" => Some(KeyCode::Unlabeled),
+        "volumedown" => Some(KeyCode::VolumeDown),
+        "volumeup" => Some(KeyCode::VolumeUp),
+        "wake" => Some(KeyCode::Wake),
+        "webback" => Some(KeyCode::WebBack),
+        "webfavorites" => Some(KeyCode::WebFavorites),
+        "webforward" => Some(KeyCode::WebForward),
+        "webhome" => Some(KeyCode::WebHome),
+        "webrefresh" => Some(KeyCode::WebRefresh),
+        "websearch" => Some(KeyCode::WebSearch),
+        "webstop" => Some(KeyCode::WebStop),
+        "yen" => Some(KeyCode::Yen),
+        "copy" => Some(KeyCode::Copy),
+        "paste" => Some(KeyCode::Paste),
+        "cut" => Some(KeyCode::Cut),
+        _ => None
+    }
+}

lyra-game/src/input/system.rs

@@ -8,8 +8,6 @@ use crate::{EventQueue, plugin::Plugin, game::GameStages};
 
 use super::{events::*, InputButtons, InputEvent};
 
-pub type KeyCode = winit::event::VirtualKeyCode;
-
 #[derive(Default)]
 pub struct InputSystem;
 
@@ -120,6 +118,10 @@ impl crate::ecs::system::System for InputSystem {
     fn world_access(&self) -> lyra_ecs::Access {
         lyra_ecs::Access::Write
     }
+    
+    fn execute_deferred(&mut self, _: NonNull<World>) -> anyhow::Result<()> {
+        Ok(())
+    }
 }
 
 impl IntoSystem<()> for InputSystem {

lyra-game/src/lib.rs

@@ -7,7 +7,6 @@ extern crate self as lyra_engine;
 pub mod game;
 pub mod render;
 pub mod resources;
-pub mod math;
 pub mod input;
 pub mod castable_any;
 pub mod plugin;
@@ -26,5 +25,10 @@ pub mod scene;
 
 pub use lyra_resource as assets;
 pub use lyra_ecs as ecs;
+pub use lyra_math as math;
+pub use lyra_reflect as reflect;
+
+#[cfg(feature = "scripting")]
+pub use lyra_scripting as script;
 
 pub use plugin::DefaultPlugins;

lyra-game/src/plugin.rs

@@ -1,3 +1,4 @@
+use lyra_ecs::CommandQueue;
 use lyra_resource::ResourceManager;
 
 use crate::EventsPlugin;
@@ -98,7 +99,7 @@ pub struct ResourceManagerPlugin;
 
 impl Plugin for ResourceManagerPlugin {
     fn setup(&self, game: &mut Game) {
-        game.world().add_resource(ResourceManager::new());
+        game.world_mut().add_resource(ResourceManager::new());
     }
 }
 
@@ -108,10 +109,22 @@ pub struct DefaultPlugins;
 
 impl Plugin for DefaultPlugins {
     fn setup(&self, game: &mut Game) {
+        CommandQueuePlugin.setup(game);
         EventsPlugin.setup(game);
         InputPlugin.setup(game);
         ResourceManagerPlugin.setup(game);
         WindowPlugin::default().setup(game);
         DeltaTimePlugin.setup(game);
     }
+}
+
+/// A plugin that creates a CommandQueue, and inserts it into the world as a Resource.
+/// The queue is processed at the end of every system execution in the GraphExecutor.
+#[derive(Default)]
+pub struct CommandQueuePlugin;
+
+impl Plugin for CommandQueuePlugin {
+    fn setup(&self, game: &mut Game) {
+        game.world_mut().add_resource(CommandQueue::default());
+    }
 }

lyra-game/src/render/light/mod.rs

@@ -8,11 +8,9 @@ pub use spotlight::*;
 
 use std::{collections::{VecDeque, HashMap}, marker::PhantomData};
 
-use tracing::debug;
-
 use std::mem;
 
-use crate::{math::Transform, scene::TransformComponent};
+use crate::math::Transform;
 
 use self::directional::DirectionalLight;
 
@@ -169,29 +167,29 @@ impl LightUniformBuffers {
 
     pub fn update_lights(&mut self, queue: &wgpu::Queue, world_tick: Tick, world: &World) {
         for (entity, point_light, transform, light_epoch, transform_epoch)
-                in world.view_iter::<(Entities, &PointLight, &TransformComponent, TickOf<PointLight>, TickOf<TransformComponent>)>() {
+                in world.view_iter::<(Entities, &PointLight, &Transform, TickOf<PointLight>, TickOf<Transform>)>() {
 
             if !self.point_lights.has_light(entity) || light_epoch == world_tick || transform_epoch == world_tick {
-                let uniform = PointLightUniform::from_bundle(&point_light, &transform.transform);
+                let uniform = PointLightUniform::from_bundle(&point_light, &transform);
                 self.point_lights.update_or_add(&mut self.lights_uniform.point_lights, entity, uniform);
-                debug!("Updated point light");
+                //debug!("Updated point light");
             }
         }
 
         for (entity, spot_light, transform, light_epoch, transform_epoch)
-                in world.view_iter::<(Entities, &SpotLight, &TransformComponent, TickOf<SpotLight>, TickOf<TransformComponent>)>() {
+                in world.view_iter::<(Entities, &SpotLight, &Transform, TickOf<SpotLight>, TickOf<Transform>)>() {
 
             if !self.spot_lights.has_light(entity) || light_epoch == world_tick || transform_epoch == world_tick {
-                let uniform = SpotLightUniform::from_bundle(&spot_light, &transform.transform);
+                let uniform = SpotLightUniform::from_bundle(&spot_light, &transform);
                 self.spot_lights.update_or_add(&mut self.lights_uniform.spot_lights, entity, uniform);
                 //debug!("Updated spot light");
             }
         }
 
         if let Some((dir_light, transform)) = 
-                world.view_iter::<(&DirectionalLight, &TransformComponent)>().next() {
+                world.view_iter::<(&DirectionalLight, &Transform)>().next() {
             
-            let uniform = DirectionalLightUniform::from_bundle(&dir_light, &transform.transform);
+            let uniform = DirectionalLightUniform::from_bundle(&dir_light, &transform);
             self.lights_uniform.directional_light = uniform;
         }
 

lyra-game/src/render/material.rs

@@ -11,11 +11,11 @@ pub struct MaterialSpecular {
 
 impl MaterialSpecular {
     pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Arc<wgpu::BindGroupLayout>, value: &lyra_resource::Specular) -> Self {
-        let tex = value.texture.as_ref().map(|t| &t.data.as_ref().unwrap().image)
-            .map(|i| RenderTexture::from_image(device, queue, bg_layout.clone(), i, None).unwrap());
+        let tex = value.texture.as_ref().map(|t| t.data_ref())
+            .map(|i| RenderTexture::from_image(device, queue, bg_layout.clone(), &i.image, None).unwrap());
 
-        let color_tex = value.color_texture.as_ref().map(|t| &t.data.as_ref().unwrap().image)
-            .map(|i| RenderTexture::from_image(device, queue, bg_layout, i, None).unwrap());
+        let color_tex = value.color_texture.as_ref().map(|t| t.data_ref())
+            .map(|i| RenderTexture::from_image(device, queue, bg_layout, &i.image, None).unwrap());
 
         Self {
             factor: value.factor,
@@ -39,8 +39,8 @@ pub struct Material {
 
 impl Material {
     pub fn from_resource(device: &wgpu::Device, queue: &wgpu::Queue, bg_layout: Arc<wgpu::BindGroupLayout>, value: &lyra_resource::Material) -> Self {
-        let diffuse_texture = value.base_color_texture.as_ref().map(|t| &t.data.as_ref().unwrap().image)
-            .map(|i| RenderTexture::from_image(device, queue, bg_layout.clone(), i, None).unwrap());
+        let diffuse_texture = value.base_color_texture.as_ref().map(|t| t.data_ref())
+            .map(|i| RenderTexture::from_image(device, queue, bg_layout.clone(), &i.image, None).unwrap());
 
         let specular = value.specular.as_ref().map(|s| MaterialSpecular::from_resource(device, queue, bg_layout.clone(), s));
 

lyra-game/src/render/renderer.rs

@@ -16,7 +16,7 @@ use winit::window::Window;
 use crate::math::Transform;
 use crate::render::material::MaterialUniform;
 use crate::render::render_buffer::BufferWrapperBuilder;
-use crate::scene::{ModelComponent, TransformComponent, CameraComponent};
+use crate::scene::{ModelComponent, CameraComponent};
 
 use super::camera::{RenderCamera, CameraUniform};
 use super::desc_buf_lay::DescVertexBufferLayout;
@@ -395,13 +395,13 @@ impl Renderer for BasicRenderer {
         
         let now_inst = Instant::now();
         
-        for (entity, model, model_epoch, transform, transform_epoch) in main_world.view_iter::<(Entities, &ModelComponent, TickOf<ModelComponent>, &TransformComponent, TickOf<TransformComponent>)>() {
+        for (entity, model, model_epoch, transform, transform_epoch) in main_world.view_iter::<(Entities, &ModelComponent, TickOf<ModelComponent>, &Transform, TickOf<Transform>)>() {
             alive_entities.insert(entity);
 
             let cached = match self.entity_last_transforms.get_mut(&entity) {
                 Some(last) if transform_epoch == last_epoch => {
                     last.from_transform = last.to_transform;
-                    last.to_transform = transform.transform;
+                    last.to_transform = *transform;
                     last.last_updated_at = Some(last.cached_at);
                     last.cached_at = now_inst;
 
@@ -412,8 +412,8 @@ impl Renderer for BasicRenderer {
                     let cached = CachedTransform {
                         last_updated_at: None,
                         cached_at: now_inst,
-                        from_transform: transform.transform,
-                        to_transform: transform.transform,
+                        from_transform: *transform,
+                        to_transform: *transform,
                     };
                     self.entity_last_transforms.insert(entity, cached.clone());
                     cached
@@ -430,7 +430,7 @@ impl Renderer for BasicRenderer {
 
             let transform_val = cached.from_transform.lerp(cached.to_transform, alpha);
 
-            let model = model.data.as_ref().unwrap().as_ref();
+            let model = model.data_ref();
             for mesh in model.meshes.iter() {
                 if !self.process_mesh(entity, transform_val, mesh) && model_epoch == last_epoch {
                     self.update_mesh_buffers(entity, mesh);

lyra-game/src/render/texture.rs

@@ -1,7 +1,7 @@
 use std::sync::Arc;
 
 use image::GenericImageView;
-use lyra_resource::{Resource, Texture};
+use lyra_resource::{ResHandle, Texture};
 
 use super::render_buffer::BindGroupPair;
 
@@ -153,8 +153,8 @@ impl RenderTexture {
         })
     }
 
-    pub fn update_texture(&mut self, _device: &wgpu::Device, queue: &wgpu::Queue, texture: &Arc<Resource<Texture>>) {
-        let texture = &texture.data.as_ref().unwrap().image;
+    pub fn update_texture(&mut self, _device: &wgpu::Device, queue: &wgpu::Queue, texture: &Arc<ResHandle<Texture>>) {
+        let texture = &texture.data_ref().image;
         let rgba = texture.to_rgba8();
         let dimensions = texture.dimensions();
         let size = wgpu::Extent3d {

lyra-game/src/render/window.rs

@@ -373,7 +373,7 @@ impl Plugin for WindowPlugin {
     fn setup(&self, game: &mut crate::game::Game) {
         let window_options = WindowOptions::default();
 
-        game.world().add_resource(Ct::new(window_options));
+        game.world_mut().add_resource(Ct::new(window_options));
         game.with_system("window_updater", window_updater_system, &[]);
     }
 }

lyra-game/src/scene/mod.rs

@@ -4,9 +4,6 @@ pub use mesh::*;
 pub mod model;
 pub use model::*;
 
-pub mod transform;
-pub use transform::*;
-
 pub mod camera;
 pub use camera::*;
 

lyra-game/src/scene/model.rs

@@ -1,10 +1,11 @@
 use lyra_ecs::Component;
+use lyra_reflect::Reflect;
 use lyra_resource::ResHandle;
 
 use crate::assets::Model;
 
-#[derive(Clone, Component)]
-pub struct ModelComponent(pub ResHandle<Model>);
+#[derive(Clone, Component, Reflect)]
+pub struct ModelComponent(#[reflect(skip)] pub ResHandle<Model>);
 
 impl From<ResHandle<Model>> for ModelComponent {
     fn from(value: ResHandle<Model>) -> Self {

lyra-game/src/scene/transform.rs

@@ -1,26 +0,0 @@
-use lyra_ecs::Component;
-
-use crate::math::Transform;
-
-#[derive(Clone, Component, Default)]
-pub struct TransformComponent {
-    pub transform: Transform,
-}
-
-impl From<Transform> for TransformComponent {
-    fn from(transform: Transform) -> Self {
-        Self {
-            transform
-        }
-    }
-}
-
-impl TransformComponent {
-    pub fn new() -> Self {
-        Self::default()
-    }
-    
-    pub fn from_transform(transform: Transform) -> Self {
-        Self::from(transform)
-    }
-}

lyra-game/src/stage.rs

@@ -9,7 +9,9 @@ pub enum StagedExecutorError {
     #[error("[stage={0}] could not find a system's dependency named `{1}`")]
     MissingSystem(String, String),
     #[error("[stage={0}] system `{1}` returned with an error: `{2}`")]
-    SystemError(String, String, anyhow::Error)
+    SystemError(String, String, anyhow::Error),
+    #[error("[stage={0}] a command returned with an error: `{1}`")]
+    CommandError(String, anyhow::Error),
 }
 
 impl StagedExecutorError {
@@ -17,6 +19,7 @@ impl StagedExecutorError {
         match value {
             GraphExecutorError::MissingSystem(s) => Self::MissingSystem(stage, s),
             GraphExecutorError::SystemError(s, e) => Self::SystemError(stage, s, e),
+            GraphExecutorError::Command(e) => Self::CommandError(stage, e)
         }
     }
 }

lyra-math/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "lyra-math"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+glam = { version = "0.24.0" }

lyra-math/src/transform.rs

@@ -1,9 +1,9 @@
 use glam::{Vec3, Mat4, Quat};
 
-use crate::math::angle::Angle;
+use super::Angle;
 
 #[repr(C)]
-#[derive(Debug, Copy, Clone)]
+#[derive(Debug, Copy, Clone, PartialEq)]
 pub struct Transform {
     pub translation: Vec3,
     pub rotation: Quat,
@@ -85,12 +85,18 @@ impl Transform {
     pub fn rotate_z(&mut self, angle: Angle) {
         self.rotate(Quat::from_rotation_z(angle.to_radians()))
     }
+
+    pub fn translate(&mut self, x: f32, y: f32, z: f32) {
+        let trans = &mut self.translation;
+        trans.x += x;
+        trans.y += y;
+        trans.z += z;
+    }
     
     /// Performs a linear interpolation between `self` and `rhs` based on the value `alpha`.
     ///
     /// When `alpha` is `0.0`, the result will be equal to `self`.  When `alpha` is `1.0`, the result
-    /// will be equal to `rhs`. When `alpha` is outside of range `[0, 1]`, the result is linearly
-    /// extrapolated.
+    /// will be equal to `rhs`.
     pub fn lerp(&self, rhs: Transform, alpha: f32) -> Self {
 
         if alpha.is_finite() {
@@ -104,4 +110,18 @@ impl Transform {
             *self
         }
     }
+}
+
+/// Adds a transform to another one
+/// 
+/// The Translations of each transform is added and rotation and scale is multiplied.
+impl std::ops::Add for Transform {
+    type Output = Transform;
+
+    fn add(mut self, rhs: Self) -> Self::Output {
+        self.translation += rhs.translation;
+        self.rotation *= rhs.rotation;
+        self.scale *= rhs.scale;
+        self
+    }
 }

lyra-reflect/Cargo.toml

@@ -5,6 +5,10 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[features]
+math = ["dep:lyra-math"]
+
 [dependencies]
 lyra-reflect-derive = { path = "lyra-reflect-derive" }
-lyra-ecs = { path = "../lyra-ecs" }
+lyra-ecs = { path = "../lyra-ecs" }
+lyra-math = { path = "../lyra-math", optional = true }

lyra-reflect/lyra-reflect-derive/src/enum_derive.rs

@@ -32,7 +32,7 @@ impl From<&Variant> for VariantType {
 
 /// Generates the following different outputs:
 /// 
-/// ```rust
+/// ```compile_fail
 /// // for struct variants
 /// TestEnum::Error { msg, code }
 /// 
@@ -98,7 +98,7 @@ fn gen_variant_if(enum_id: &proc_macro2::Ident, variant: &Variant, if_body: proc
 
 /// Generates the following:
 /// 
-/// ```rust
+/// ```compile_fail
 /// /// generated one field here
 /// if name ==  "msg" {
 ///     return Some(msg);
@@ -113,7 +113,7 @@ fn gen_variant_if(enum_id: &proc_macro2::Ident, variant: &Variant, if_body: proc
 fn gen_if_field_names(variant: &Variant) -> proc_macro2::TokenStream {
     let field_ifs = variant.fields.iter().map(|field| {
         let id = field.ident.as_ref().unwrap();
-        let id_str = id.span().source_text().unwrap();
+        let id_str = id.to_string();
 
         quote! {
             if name == #id_str {
@@ -129,7 +129,7 @@ fn gen_if_field_names(variant: &Variant) -> proc_macro2::TokenStream {
 
 /// Generates the following rust code:
 /// 
-/// ```rust
+/// ```compile_fail
 /// match name {
 ///     "msg" | "code" => true,
 ///     _ => false,
@@ -140,7 +140,7 @@ fn gen_match_names(variant: &Variant) -> proc_macro2::TokenStream {
     let field_name_strs = variant.fields.iter().map(|field| {
         let id = field.ident.as_ref()
             .expect("Could not find identifier for enum field!");
-        id.span().source_text().unwrap()
+        id.to_string()
     });
 
     quote! {
@@ -153,7 +153,7 @@ fn gen_match_names(variant: &Variant) -> proc_macro2::TokenStream {
 
 /// Generates the following:
 /// 
-/// ```rust
+/// ```compile_fail
 /// /// generated one field here
 /// if idx == 0 {
 ///     return Some(a);
@@ -190,7 +190,7 @@ fn gen_if_field_indices(variant: &Variant) -> proc_macro2::TokenStream {
 
 /// Generates the following:
 /// 
-/// ```rust
+/// ```compile_fail
 /// /// generated one field here
 /// if idx == 0 {
 ///     return Some("a");
@@ -226,7 +226,7 @@ fn gen_if_field_indices_names(variant: &Variant) -> proc_macro2::TokenStream {
 }
 
 /// Generates the following:
-/// ```rust
+/// ```compile_fail
 /// /// when `by_index` is false:
 /// 
 /// if let TestEnum::Error{ msg, code} = self {
@@ -292,7 +292,6 @@ fn gen_enum_if_stmts(enum_id: &proc_macro2::Ident, data: &DataEnum, by_index: bo
             _ => quote! { },
         }
     });
-    println!("====");
 
     quote! {
         #( #struct_vars )*
@@ -301,7 +300,7 @@ fn gen_enum_if_stmts(enum_id: &proc_macro2::Ident, data: &DataEnum, by_index: bo
 
 /// Generates the following rust code:
 /// 
-/// ```rust
+/// ```compile_fail
 /// if let TestEnum::Error { msg, code } = self {
 ///     return match name {
 ///       // expands for continuing struct fields
@@ -332,7 +331,7 @@ fn gen_enum_has_field(enum_id: &proc_macro2::Ident, data: &DataEnum) -> proc_mac
 
 /// Generates the following code:
 /// 
-/// ```rust
+/// ```compile_fail
 /// match self {
 ///     TestEnum::Start => 0,
 ///     TestEnum::Middle(a, b) => 2,
@@ -359,7 +358,7 @@ fn gen_enum_fields_len(enum_id: &proc_macro2::Ident, data: &DataEnum) -> proc_ma
 
 /// Generates the following code:
 /// 
-/// ```rust
+/// ```compile_fail
 /// if let TestEnum::Error { msg, code } = self {
 ///     if idx == 0 {
 ///         return Some("msg");
@@ -390,7 +389,7 @@ fn gen_enum_field_name_at(enum_id: &proc_macro2::Ident, data: &DataEnum) -> proc
 }
 
 /// Generates the following code:
-/// ```rust
+/// ```compile_fail
 /// match self {
 ///     TestEnum::Start => 0,
 ///     TestEnum::Middle(a, b) => 1,
@@ -428,7 +427,7 @@ fn gen_enum_variant_name(enum_id: &proc_macro2::Ident, data: &DataEnum, gen_inde
 /// Generates a match statement that returns the types of the variants of the enum.
 /// 
 /// Example:
-/// ```rust
+/// ```compile_fail
 /// match self {
 ///     TestEnum::Start => EnumType::Unit,
 ///     TestEnum::Middle(a, b) => EnumType::Tuple,
@@ -458,41 +457,35 @@ fn gen_enum_variant_type(enum_id: &proc_macro2::Ident, data: &DataEnum) -> proc_
 /// Create a reflect implementation for an enum
 pub fn derive_reflect_enum(input: &DeriveInput, data_enum: &DataEnum) -> proc_macro2::TokenStream {
 
-    let type_path = &input.ident;
-    let name = type_path.span().source_text().unwrap();
-    //println!("Got type path: {}", type_path);
+    let input_ident = &input.ident;
+    let ident_str = input.ident.to_string();
 
     let variant_count = data_enum.variants.len();
 
-    /* let mut variants_iter = data_enum.variants.iter();
+    let field_ifs = gen_enum_if_stmts(input_ident, data_enum, false);
+    let field_mut_ifs = gen_enum_if_stmts(input_ident, data_enum, false);
 
-    let variant = variants_iter.next().unwrap();
-    let variant_name = &variant.ident; */
+    let field_at_ifs = gen_enum_if_stmts(input_ident, data_enum, true);
+    let field_at_mut_ifs = gen_enum_if_stmts(input_ident, data_enum, true);
 
-    let field_ifs = gen_enum_if_stmts(type_path, data_enum, false);
-    let field_mut_ifs = gen_enum_if_stmts(type_path, data_enum, false);
-
-    let field_at_ifs = gen_enum_if_stmts(type_path, data_enum, true);
-    let field_at_mut_ifs = gen_enum_if_stmts(type_path, data_enum, true);
-
-    let has_field = gen_enum_has_field(type_path, data_enum);
-    let field_len = gen_enum_fields_len(type_path, data_enum);
-    let field_name_at = gen_enum_field_name_at(type_path, data_enum);
-    let variant_name_match = gen_enum_variant_name(type_path, data_enum, false);
-    let variant_idx_match = gen_enum_variant_name(type_path, data_enum, true);
-    let variant_type = gen_enum_variant_type(type_path, data_enum);
+    let has_field = gen_enum_has_field(input_ident, data_enum);
+    let field_len = gen_enum_fields_len(input_ident, data_enum);
+    let field_name_at = gen_enum_field_name_at(input_ident, data_enum);
+    let variant_name_match = gen_enum_variant_name(input_ident, data_enum, false);
+    let variant_idx_match = gen_enum_variant_name(input_ident, data_enum, true);
+    let variant_type = gen_enum_variant_type(input_ident, data_enum);
 
     let generics = add_trait_bounds(input.generics.clone(), vec![parse_quote!(Reflect), parse_quote!(Clone)]);
     let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
     return proc_macro2::TokenStream::from(quote! {
-        impl #impl_generics lyra_engine::reflect::Reflect for #type_path #ty_generics #where_clause {
+        impl #impl_generics lyra_engine::reflect::Reflect for #input_ident #ty_generics #where_clause {
             fn name(&self) -> ::std::string::String {
-                #name.to_string()
+                #ident_str.to_string()
             }
         
             fn type_id(&self) -> std::any::TypeId {
-                std::any::TypeId::of::<#type_path #ty_generics>()
+                std::any::TypeId::of::<#input_ident #ty_generics>()
             }
         
             fn as_any(&self) -> &dyn std::any::Any {
@@ -530,7 +523,7 @@ pub fn derive_reflect_enum(input: &DeriveInput, data_enum: &DataEnum) -> proc_ma
             }
         }
 
-        impl #impl_generics lyra_engine::reflect::Enum for #type_path #ty_generics #where_clause {
+        impl #impl_generics lyra_engine::reflect::Enum for #input_ident #ty_generics #where_clause {
             fn field(&self, name: &str) -> Option<&dyn lyra_engine::reflect::Reflect> {
                 let name = name.to_lowercase();
                 let name = name.as_str();

lyra-reflect/lyra-reflect-derive/src/lib.rs

@@ -1,4 +1,5 @@
 use proc_macro::TokenStream;
+use proc_macro2::Ident;
 use quote::{quote, ToTokens};
 use syn::{Generics, Path, Attribute, GenericParam, parse_macro_input, DeriveInput, TypeParamBound};
 
@@ -10,8 +11,55 @@ mod struct_derive;
 #[allow(unused_imports)]
 use struct_derive::*;
 
+mod struct_macro;
+
+/* #[proc_macro_attribute(attributes(reflect))]
+pub fn reflect(_attr: proc_macro::TokenStream, item: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    item
+} */
+
+pub(crate) struct FieldAttributes(Vec<ReflectAttribute>);
+
+impl FieldAttributes {
+    /// Searches for a usage of the 'reflect' attribute and returns a list of the
+    /// things used in the usage.
+    pub fn from_vec(v: &Vec<syn::Attribute>) -> Result<Self, syn::Error> {
+        let s: Result<Vec<ReflectAttribute>, _> = v.iter().filter_map(|att| match &att.meta {
+            syn::Meta::Path(_) => None,
+            syn::Meta::List(l) => {
+                Some(syn::parse::<ReflectAttribute>(l.tokens.clone().into()))
+            }
+            syn::Meta::NameValue(_) => None
+        }).collect();
+
+        Ok(Self(s?))
+    }
+
+    pub fn has_skip(&self) -> bool {
+        self.0.iter().any(|a| *a == ReflectAttribute::Skip)
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub(crate) enum ReflectAttribute {
+    Skip
+}
+
+impl syn::parse::Parse for ReflectAttribute {
+    fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
+        let ident: Ident = input.parse()?;
+        let ident_str = ident.to_string().to_lowercase();
+
+        match ident_str.as_str() {
+            "skip" => Ok(Self::Skip),
+            _ => Err(syn::Error::new(ident.span(), "Unknown reflect attribute flag"))
+        }
+    }
+}
+
 #[allow(dead_code)]
 pub(crate) struct ReflectDef {
+    //pub ident: Ident,
     pub type_path: Path,
     pub generics: Generics,
     pub attributes: Vec<Attribute>
@@ -21,10 +69,12 @@ impl syn::parse::Parse for ReflectDef {
     fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
         let attributes = input.call(Attribute::parse_outer)?;
         let type_path = Path::parse_mod_style(input)?;
+        //let ident = type_path. //type_path.require_ident()?;
         let mut generics = input.parse::<Generics>()?;
         generics.where_clause = input.parse()?;
 
         Ok(Self {
+            //ident: ident.clone(),
             type_path,
             generics,
             attributes,
@@ -32,7 +82,7 @@ impl syn::parse::Parse for ReflectDef {
     }
 }
 
-#[proc_macro_derive(Reflect)]
+#[proc_macro_derive(Reflect, attributes(reflect))]
 pub fn derive_reflect(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
     let input = parse_macro_input!(input as DeriveInput);
 
@@ -55,18 +105,22 @@ pub fn derive_reflect(input: proc_macro::TokenStream) -> proc_macro::TokenStream
 #[proc_macro]
 pub fn impl_reflect_trait_value(input: TokenStream) -> TokenStream {
     let reflect = syn::parse_macro_input!(input as ReflectDef);
-    
-    let type_path = reflect.type_path.clone().into_token_stream();
 
-    let name_id = &reflect.type_path.segments.last().unwrap().ident;
-    let name = name_id.span().source_text().unwrap();
+    let type_path = reflect.type_path;
+    // convert the type path to a string. This would not create a leading separator
+    let type_path_str = {
+        let idents: Vec<String> = type_path.segments.iter()
+            .map(|segment| segment.ident.to_string())
+            .collect();
+        idents.join("::")
+    };
 
     let (impl_generics, ty_generics, where_clause) = reflect.generics.split_for_impl();
 
     TokenStream::from(quote! {
         impl #impl_generics lyra_engine::reflect::Reflect for #type_path #ty_generics #where_clause {
             fn name(&self) -> ::std::string::String {
-                #name.to_string()
+                #type_path_str.to_string()
             }
         
             fn type_id(&self) -> std::any::TypeId {
@@ -119,4 +173,9 @@ pub(crate) fn add_trait_bounds(mut generics: Generics, add_bounds: Vec<TypeParam
         }
     }
     generics
+}
+
+#[proc_macro]
+pub fn impl_reflect_simple_struct(input: TokenStream) -> TokenStream {
+    struct_macro::impl_reflect_simple_struct(input)
 }

lyra-reflect/lyra-reflect-derive/src/struct_derive.rs

@@ -1,13 +1,34 @@
 use quote::{quote, ToTokens};
 use syn::{DeriveInput, parse_quote, DataStruct};
 
-use crate::add_trait_bounds;
+use crate::{add_trait_bounds, FieldAttributes};
+
+#[derive(Debug, PartialEq, Eq)]
+enum StructType {
+    Unit,
+    Named,
+    Tuple,
+}
+
+impl StructType {
+    pub fn new(data: &DataStruct) -> Self {
+        if let Some(first) = data.fields.iter().next() {
+            if first.ident.is_some() {
+                Self::Named
+            } else {
+                Self::Tuple
+            }
+        } else {
+            Self::Unit
+        }
+    }
+}
 
 /// Generates code that matches a string with a struct's field name, and returns an Option that
 /// contains a borrow (mutable borrow if `is_mut` is true) to the matching struct field.
 /// 
 /// Example:
-/// ```rust
+/// ```compile_fail
 /// // when `is_mut` = false
 /// match name {
 ///     "x" => Some(&self.x),
@@ -22,35 +43,49 @@ use crate::add_trait_bounds;
 ///     _ => None,
 /// }
 /// ```
+/// 
+/// If the struct is a unit or tuple struct, None will always be returned
 fn gen_struct_field_match(data: &DataStruct, is_mut: bool) -> proc_macro2::TokenStream {
-    let mut_tkn = if is_mut {
-        quote! {
-            mut
-        }
-    } else { quote!{} };
-    
-    let field_arms = data.fields.iter().map(|field| {
-        let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
-        let field_name_str = field_ident.to_string();
-        
-        quote! {
-            #field_name_str => Some(&#mut_tkn self.#field_ident)
-        }
-    });
+    let ty = StructType::new(data);
 
-    quote! {
-        match name {
-            #(#field_arms,)*
-            _ => None,
+    if ty == StructType::Named {
+        let mut_tkn = if is_mut {
+            quote! {
+                mut
+            }
+        } else { quote!{} };
+
+        let field_arms = data.fields.iter().map(|field| {
+            let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
+            let field_name_str = field_ident.to_string();
+            
+            let attrs = FieldAttributes::from_vec(&field.attrs)
+                .expect("Failure to parse reflect attributes");
+            if attrs.has_skip() {
+                quote! {
+                    #field_name_str => None
+                }
+            } else {
+                quote! {
+                    #field_name_str => Some(&#mut_tkn self.#field_ident)
+                }
+            }
+        });
+
+        quote! {
+            match name {
+                #(#field_arms,)*
+                _ => None,
+            }
         }
-    }
+    } else { quote!(None) }
 }
 
 /// Generates code that matches a string with a struct's field name, and sets that field value
 /// with the provided `val`.
 /// 
 /// Example:
-/// ```rust
+/// ```compile_fail
 /// match name {
 ///     "x" => self.x = any_val.downcast_ref::<f32>()
 ///                .expect(&format!("Cannot set struct's field of {} type to the provided type of {}", "f32", val.name()))
@@ -64,34 +99,48 @@ fn gen_struct_field_match(data: &DataStruct, is_mut: bool) -> proc_macro2::Token
 /// }
 /// ```
 fn gen_struct_set_field_match(data: &DataStruct) -> proc_macro2::TokenStream {
-    let field_arms = data.fields.iter().map(|field| {
-        let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
-        let field_name_str = field_ident.to_string();
-        let field_ty = &field.ty;
-        
-        quote! {
-            #field_name_str => self.#field_ident = any_val.downcast_ref::<#field_ty>()
-                .expect(&format!("Cannot set struct's field of {} type to the provided type of {}", #field_name_str, val.name()))
-                .clone() //Some(&#mut_tkn self.#field_ident)
-        }
-    });
+    let ty = StructType::new(data);
 
-    quote! {
-        let any_val = val.as_any();
-        match name {
-            #(#field_arms,)*
-            _ => {
-                return false;
-            },
+    if ty == StructType::Named {
+        let field_arms = data.fields.iter().map(|field| {
+            let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
+            let field_name_str = field_ident.to_string();
+            let field_ty = &field.ty;
+            
+            let attrs = FieldAttributes::from_vec(&field.attrs)
+                .expect("Failure to parse reflect attributes");
+            if attrs.has_skip() {
+                quote! {
+                    #field_name_str => {}
+                }
+            } else {
+                quote! {
+                    #field_name_str => self.#field_ident = any_val.downcast_ref::<#field_ty>()
+                        .expect(&format!("Cannot set struct's field of {} type to the provided type of {}", #field_name_str, val.name()))
+                        .clone() //Some(&#mut_tkn self.#field_ident)
+                }
+            }
+        });
+
+        quote! {
+            let any_val = val.as_any();
+            match name {
+                #(#field_arms,)*
+                _ => {
+                    return false;
+                },
+            }
+
+            true
         }
-    }
+    } else { quote!(return false;) }
 }
 
 /// Generates code that matches a string with a struct's field name, and returns a string that is
 /// the type of the field.
 /// 
 /// Example:
-/// ```rust
+/// ```compile_fail
 /// match name {
 ///     "x" => Some("f32"),
 ///     "y" => Some("f32"),
@@ -99,32 +148,36 @@ fn gen_struct_set_field_match(data: &DataStruct) -> proc_macro2::TokenStream {
 /// }
 /// ```
 fn gen_struct_field_name_match(data: &DataStruct) -> proc_macro2::TokenStream {
-    let field_arms = data.fields.iter().map(|field| {
-        let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
-        let field_name_str = field_ident.to_string();
+    let ty = StructType::new(data);
+
+    if ty == StructType::Named {
+        let field_arms = data.fields.iter().map(|field| {
+            let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
+            let field_name_str = field_ident.to_string();
+
+            let mut field_ty_stream = proc_macro2::TokenStream::new();
+            field.ty.to_tokens(&mut field_ty_stream);
+            let s = field_ty_stream.to_string();
+            
+            quote! {
+                #field_name_str => Some(#s)
+            }
+        });
 
-        let mut field_ty_stream = proc_macro2::TokenStream::new();
-        field.ty.to_tokens(&mut field_ty_stream);
-        let s = field_ty_stream.to_string();
-        
         quote! {
-            #field_name_str => Some(#s)
+            match name {
+                #(#field_arms,)*
+                _ => None,
+            }
         }
-    });
-
-    quote! {
-        match name {
-            #(#field_arms,)*
-            _ => None,
-        }
-    }
+    } else { quote!(None) }
 }
 
 /// Generates code that matches a string with a struct's field name, and sets that field value
 /// with the provided `val`.
 /// 
 /// Example:
-/// ```rust
+/// ```compile_fail
 /// match name {
 ///     0 => self.x = any_val.downcast_ref::<f32>()
 ///                .expect(&format!("Cannot set struct's field of {} type to the provided type of {}", "f32", val.name()))
@@ -138,15 +191,38 @@ fn gen_struct_field_name_match(data: &DataStruct) -> proc_macro2::TokenStream {
 /// }
 /// ```
 fn gen_struct_set_field_match_idx(data: &DataStruct) -> proc_macro2::TokenStream {
+    let ty = StructType::new(data);
+
+    if ty == StructType::Unit {
+        return quote!( return false; );
+    }
+
     let field_arms = data.fields.iter().enumerate().map(|(idx, field)| {
-        let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
-        let field_name_str = field_ident.to_string();
         let field_ty = &field.ty;
-        
-        quote! {
-            #idx => self.#field_ident = any_val.downcast_ref::<#field_ty>()
-                .expect(&format!("Cannot set struct's field of {} type to the provided type of {}", #field_name_str, val.name()))
-                .clone()
+
+        let attrs = FieldAttributes::from_vec(&field.attrs)
+            .expect("Failure to parse reflect attributes");
+        if attrs.has_skip() {
+            return quote! {
+                #idx => {}
+            };
+        }
+
+        if let Some(field_ident) = &field.ident {
+            let field_name_str = field_ident.to_string();
+
+            quote! {
+                #idx => self.#field_ident = any_val.downcast_ref::<#field_ty>()
+                    .expect(&format!("Cannot set struct's field of {} to the provided type of {}", #field_name_str, val.name()))
+                    .clone()
+            }
+        } else {
+            let sidx = syn::Index::from(idx);
+            quote! {
+                #idx => self.#sidx = any_val.downcast_ref::<#field_ty>()
+                    .expect(&format!("Cannot set struct's field at {} to the provided type of {}", #idx, val.name()))
+                    .clone()
+            }
         }
     });
 
@@ -158,6 +234,8 @@ fn gen_struct_set_field_match_idx(data: &DataStruct) -> proc_macro2::TokenStream
                 return false;
             },
         }
+
+        true
     }
 }
 
@@ -165,7 +243,7 @@ fn gen_struct_set_field_match_idx(data: &DataStruct) -> proc_macro2::TokenStream
 /// type of the field.
 /// 
 /// Example:
-/// ```rust
+/// ```compile_fail
 /// match name {
 ///     0 => Some("f32"),
 ///     1 => Some("f32"),
@@ -196,7 +274,7 @@ fn gen_struct_field_name_match_idx(data: &DataStruct) -> proc_macro2::TokenStrea
 /// to the matching struct field.
 /// 
 /// Example:
-/// ```rust
+/// ```compile_fail
 /// // when `is_mut` = false
 /// match idx {
 ///     0 => Some(&self.x),
@@ -212,6 +290,12 @@ fn gen_struct_field_name_match_idx(data: &DataStruct) -> proc_macro2::TokenStrea
 /// }
 /// ```
 fn gen_struct_field_match_idx(data: &DataStruct, is_mut: bool) -> proc_macro2::TokenStream {
+    let ty = StructType::new(data);
+
+    if ty == StructType::Unit {
+        return quote!(None);
+    }
+
     let mut_tkn = if is_mut {
         quote! {
             mut
@@ -219,10 +303,23 @@ fn gen_struct_field_match_idx(data: &DataStruct, is_mut: bool) -> proc_macro2::T
     } else { quote!{} };
     
     let field_arms = data.fields.iter().enumerate().map(|(idx, field)| {
-        let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
+        let attrs = FieldAttributes::from_vec(&field.attrs)
+            .expect("Failure to parse reflect attributes");
+        if attrs.has_skip() {
+            return quote! {
+                #idx => None
+            };
+        }
         
-        quote! {
-            #idx => Some(&#mut_tkn self.#field_ident)
+        if let Some(field_ident) = &field.ident {
+            quote! {
+                #idx => Some(&#mut_tkn self.#field_ident)
+            }
+        } else {
+            let sidx = syn::Index::from(idx);
+            quote! {
+                #idx => Some(&#mut_tkn self.#sidx)
+            }
         }
     });
 
@@ -238,7 +335,7 @@ fn gen_struct_field_match_idx(data: &DataStruct, is_mut: bool) -> proc_macro2::T
 /// and returns an Option that contains the name of the field.
 /// 
 /// Example:
-/// ```rust
+/// ```compile_fail
 /// match idx {
 ///     0 => Some("x"),
 ///     1 => Some("y"),
@@ -246,27 +343,34 @@ fn gen_struct_field_match_idx(data: &DataStruct, is_mut: bool) -> proc_macro2::T
 /// }
 /// ```
 fn gen_struct_field_name_idx(data: &DataStruct) -> proc_macro2::TokenStream {
-    let field_arms = data.fields.iter().enumerate().map(|(idx, field)| {
-        let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
-        let field_name_str = field_ident.to_string();
-        
-        quote! {
-            #idx => Some(#field_name_str)
-        }
-    });
+    let ty = StructType::new(data);
 
-    quote! {
-        match idx {
-            #(#field_arms,)*
-            _ => None,
+    if ty == StructType::Named {
+        let field_arms = data.fields.iter().enumerate().map(|(idx, field)| {
+            let field_ident = field.ident.as_ref().expect("Struct is missing field ident!");
+            let field_name_str = field_ident.to_string();
+
+            quote! {
+                #idx => Some(#field_name_str)
+            }
+        });
+
+        quote! {
+            match idx {
+                #(#field_arms,)*
+                _ => None,
+            }
         }
+    } else {
+        quote!(None)
     }
 }
 
 /// Generates a token stream that implements Reflect and Struct for the provided struct
 pub fn derive_reflect_struct(input: &DeriveInput, data_struct: &DataStruct) -> proc_macro2::TokenStream {
     let type_path = &input.ident;
-    let name = type_path.span().source_text().unwrap();
+    let name = type_path.to_string();
+    //let name = type_path.span().source_text().unwrap();
 
     let field_len = data_struct.fields.len();
     let get_field_match = gen_struct_field_match(data_struct, false);
@@ -360,12 +464,10 @@ pub fn derive_reflect_struct(input: &DeriveInput, data_struct: &DataStruct) -> p
 
             fn set_field(&mut self, name: &str, val: &dyn lyra_engine::reflect::Reflect) -> bool {
                 #set_field_named
-                true
             }
 
             fn set_field_at(&mut self, idx: usize, val: &dyn lyra_engine::reflect::Reflect) -> bool {
                 #set_field_idx
-                true
             }
 
             fn field_type(&self, name: &str) -> Option<&'static str> {

lyra-reflect/lyra-reflect-derive/src/struct_macro.rs

@@ -0,0 +1,270 @@
+use quote::quote;
+use syn::{Token, parenthesized, punctuated::Punctuated};
+
+struct Field {
+    name: syn::Ident,
+    _eq: Token![=],
+    ty: syn::Path,
+}
+
+impl syn::parse::Parse for Field {
+    fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
+        Ok(Self {
+            name: input.parse()?,
+            _eq: input.parse()?,
+            ty: input.parse()?,
+        })
+    }
+}
+
+struct SimpleStruct {
+    type_path: syn::Path,
+    pub generics: syn::Generics,
+    fields: Vec<Field>,
+}
+
+impl syn::parse::Parse for SimpleStruct {
+    fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
+        //let type_path = syn::Path::parse_mod_style(input)?;
+        let type_path: syn::Path = input.parse()?;
+        /* let mut generics = input.parse::<syn::Generics>()?;
+        generics.where_clause = input.parse()?; */
+
+        let mut fields = vec![];
+
+        // parse fields if a comma is found
+        if input.peek(Token![,]) {
+            let _: Token![,] = input.parse()?;
+            let ident: syn::Ident = input.parse()?;
+            let ident_str = ident.to_string();
+
+            match ident_str.as_str() {
+                "fields" => {
+                    let content;
+                    let _parens: syn::token::Paren = parenthesized!(content in input);
+
+                    let f: Punctuated<Field, Token![,]> = content.parse_terminated(Field::parse, Token![,])?;
+                    fields = f.into_iter().collect();
+                },
+                _ => return Err(syn::Error::new(ident.span(), "Unknown macro command, expected `fields`")),
+            }
+        }
+
+        Ok(Self {
+            type_path,
+            generics: syn::Generics::default(),
+            fields,
+        })
+
+    }
+}
+
+
+fn gen_match_field_name_arm(simple: &SimpleStruct, default: &proc_macro2::TokenStream, arm_gen: fn(field: &Field) -> proc_macro2::TokenStream) -> proc_macro2::TokenStream {
+    let field_arms_iter = simple.fields.iter().map(|f| {
+        let fname = &f.name;
+        let arm = arm_gen(f);
+
+        quote! {
+            stringify!(#fname) => #arm
+        }
+    });
+
+    quote! {
+        match name {
+            #(#field_arms_iter,)*
+            _ => #default,
+        }
+    }
+}
+
+fn gen_match_field_index_arm(simple: &SimpleStruct, default: &proc_macro2::TokenStream, arm_gen: fn(field: &Field) -> proc_macro2::TokenStream) -> proc_macro2::TokenStream {
+    let field_arms_iter = simple.fields.iter().enumerate().map(|(idx, f)| {
+        let arm = arm_gen(f);
+
+        quote! {
+            #idx => #arm
+        }
+    });
+
+    quote! {
+        match idx {
+            #(#field_arms_iter,)*
+            _ => #default,
+        }
+    }
+}
+
+pub(crate) fn impl_reflect_simple_struct(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    let simple = syn::parse_macro_input!(input as SimpleStruct);
+
+    let type_path = &simple.type_path;
+    let (impl_generics, ty_generics, where_clause) = simple.generics.split_for_impl();
+    // convert the type path to a string. This would not create a leading separator
+    /* let type_path_str = {
+        let idents: Vec<String> = type_path.segments.iter()
+            .map(|segment| segment.ident.to_string())
+            .collect();
+        idents.join("::")
+    }; */
+
+    let borrow_fn = |field: &Field| {
+        let name = &field.name;
+        quote! {
+            Some(&self.#name)
+        }
+    };
+
+    let borrow_mut_fn = |field: &Field| {
+        let name = &field.name;
+        quote! {
+            Some(&mut self.#name)
+        }
+    };
+
+    let none_default = quote!(None);
+    let false_return_default = quote!( { return false; });
+    
+    let field_count = simple.fields.len();
+
+    let field_fn = gen_match_field_name_arm(&simple, &none_default, borrow_fn);
+    let field_mut_fn = gen_match_field_name_arm(&simple, &none_default, borrow_mut_fn);
+    let field_at_fn = gen_match_field_index_arm(&simple, &none_default, borrow_fn);
+    let field_at_mut_fn = gen_match_field_index_arm(&simple, &none_default, borrow_mut_fn);
+    let field_name_at_fn = gen_match_field_index_arm(&simple, &none_default, |f| {
+        let name = &f.name;
+        quote! {
+            Some(stringify!(#name))
+        }
+    });
+
+    let set_field_arm = |f: &Field| {
+        let name = &f.name;
+        let ty = &f.ty;
+        quote! {
+            self.#name = any_val.downcast_ref::<#ty>()
+                .expect(&format!("Cannot set struct's field of {} type to the provided type of {}", stringify!(#name), val.name()))
+                .clone() //Some(&#mut_tkn self.#field_ident)
+        }
+    };
+
+    let set_field_fn = gen_match_field_name_arm(&simple, &false_return_default, set_field_arm);
+    let set_field_at_fn = gen_match_field_index_arm(&simple, &false_return_default, set_field_arm);
+
+    let get_field_ty_arm = |f: &Field| {
+        let fty = &f.ty;
+        quote! {
+            Some(stringify!(#fty))
+        }
+    };
+    let field_type_fn = gen_match_field_name_arm(&simple, &none_default, get_field_ty_arm);
+    let field_type_at_fn = gen_match_field_index_arm(&simple, &none_default, get_field_ty_arm);
+
+    proc_macro::TokenStream::from(quote! {
+        impl #impl_generics lyra_engine::reflect::Reflect for #type_path #ty_generics #where_clause {
+            fn name(&self) -> ::std::string::String {
+                stringify!(#type_path).to_string()
+            }
+        
+            fn type_id(&self) -> std::any::TypeId {
+                std::any::TypeId::of::<#type_path #ty_generics>()
+            }
+        
+            fn as_any(&self) -> &dyn std::any::Any {
+                self
+            }
+        
+            fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
+                self
+            }
+        
+            fn apply(&mut self, val: &dyn lyra_engine::reflect::Reflect) {
+                let val = val.as_any().downcast_ref::<Self>()
+                    .expect("The type of `val` is not the same as `self`");
+                *self = val.clone();
+            }
+
+            fn clone_inner(&self) -> Box<dyn lyra_engine::reflect::Reflect> {
+                Box::new(self.clone())
+            }
+
+            fn reflect_ref(&self) -> lyra_engine::reflect::ReflectRef {
+                lyra_engine::reflect::ReflectRef::Value(self)
+            }
+
+            fn reflect_mut(&mut self) -> lyra_engine::reflect::ReflectMut {
+                lyra_engine::reflect::ReflectMut::Value(self)
+            }
+
+            fn reflect_val(&self) -> &dyn lyra_engine::reflect::Reflect {
+                self
+            }
+
+            fn reflect_val_mut(&mut self) -> &mut dyn lyra_engine::reflect::Reflect {
+                self
+            }
+        }
+
+        impl #impl_generics lyra_engine::reflect::Struct for #type_path #ty_generics #where_clause {
+            fn field(&self, name: &str) -> Option<&dyn Reflect> {
+                #field_fn
+            }
+
+            fn field_mut(&mut self, name: &str) -> Option<&mut dyn Reflect> {
+                #field_mut_fn
+            }
+
+            fn fields_len(&self) -> usize {
+                #field_count
+            }
+
+            fn field_at(&self, idx: usize) -> Option<&dyn Reflect> {
+                #field_at_fn
+            }
+
+            fn field_at_mut(&mut self, idx: usize) -> Option<&mut dyn Reflect> {
+                #field_at_mut_fn
+            }
+
+            fn field_name_at(&self, idx: usize) -> Option<&str> {
+                #field_name_at_fn
+            }
+
+            fn set_field(&mut self, name: &str, val: &dyn Reflect) -> bool {
+                let any_val = val.as_any();
+
+                #set_field_fn
+
+                true
+            }
+
+            fn set_field_at(&mut self, idx: usize, val: &dyn Reflect) -> bool {
+                let any_val = val.as_any();
+
+                #set_field_at_fn
+
+                true
+            }
+
+            fn field_type(&self, name: &str) -> Option<&'static str> {
+                #field_type_fn
+            }
+
+            fn field_type_at(&self, idx: usize) -> Option<&'static str> {
+                #field_type_at_fn
+            }
+
+            fn method(&self, name: &str) -> Option<&Method> {
+                unimplemented!()
+            }
+            
+            fn method_at(&self, idx: usize) -> Option<&Method> {
+                unimplemented!()
+            }
+
+            fn methods_len(&self) -> usize {
+                unimplemented!()
+            }
+        }
+    })
+}

lyra-reflect/src/component.rs

@@ -0,0 +1,74 @@
+use std::{any::{Any, TypeId}, cell::{Ref, RefMut}};
+
+use lyra_ecs::{Component, ComponentInfo, World, Entity, DynamicBundle};
+
+use crate::{Reflect, FromType};
+
+#[derive(Clone)]
+pub struct ReflectedComponent {
+    pub type_id: TypeId,
+    pub info: ComponentInfo,
+    //value: Value,
+    //from_world: 
+
+    //from_world: for<'a> fn (world: &'a mut World) -> Box<dyn Reflect>,
+    /// Inserts component into entity in the world
+    fn_insert: for<'a> fn (world: &'a mut World, entity: Entity, component: Box<dyn Reflect>),
+    /// Inserts component into a bundle
+    fn_bundle_insert: for<'a> fn (dynamic_bundle: &'a mut DynamicBundle, component: Box<dyn Reflect>),
+    fn_reflect: for<'a> fn (world: &'a World, entity: Entity) -> Option<Ref<'a, dyn Reflect>>,
+    fn_reflect_mut: for<'a> fn (world: &'a mut World, entity: Entity) -> Option<RefMut<'a, dyn Reflect>>,
+}
+
+impl ReflectedComponent {
+    /// Insert the reflected component into an entity.
+    pub fn insert(&self, world: &mut World, entity: Entity, component: Box<dyn Reflect>) {
+        (self.fn_insert)(world, entity, component);
+    }
+
+    /// Insert this component into a DynamicBundle
+    pub fn bundle_insert(&self, dynamic_bundle: &mut DynamicBundle, component: Box<dyn Reflect>) {
+        (self.fn_bundle_insert)(dynamic_bundle, component)
+    }
+
+    /// Retrieves a reflected component from an entity.
+    pub fn reflect<'a>(&'a self, world: &'a World, entity: Entity) -> Option<Ref<'a, dyn Reflect>> {
+        (self.fn_reflect)(world, entity)
+    }
+
+    /// Retrieves a reflected component from an entity.
+    pub fn reflect_mut<'a>(&'a mut self, world: &'a mut World, entity: Entity) -> Option<RefMut<'a, dyn Reflect>> {
+        (self.fn_reflect_mut)(world, entity)
+    }
+}
+
+impl<C: Component + Reflect> FromType<C> for ReflectedComponent {
+    fn from_type() -> Self {
+        ReflectedComponent {
+            type_id: TypeId::of::<C>(),
+            info: ComponentInfo::new::<C>(),
+            fn_insert: |world: &mut World, entity: Entity, component: Box<dyn Reflect>| {
+                let c = component as Box<dyn Any>;
+                let c = c.downcast::<C>()
+                    .expect("Provided a non-matching type to ReflectedComponent insert method!");
+                let c = *c;
+                world.insert(entity, (c,));
+            },
+            fn_bundle_insert: |bundle: &mut DynamicBundle, component: Box<dyn Reflect>| {
+                let c = component as Box<dyn Any>;
+                let c = c.downcast::<C>()
+                    .expect("Provided a non-matching type to ReflectedComponent insert method!");
+                let c = *c;
+                bundle.push(c);
+            },
+            fn_reflect: |world: &World, entity: Entity| {
+                world.view_one::<&C>(entity)
+                    .get().map(|c| c as Ref<dyn Reflect>)
+            },
+            fn_reflect_mut: |world: &mut World, entity: Entity| {
+                world.view_one::<&mut C>(entity)
+                    .get().map(|c| c as RefMut<dyn Reflect>)
+            },
+        }
+    }
+}

lyra-reflect/src/impls/impl_math.rs

@@ -0,0 +1,19 @@
+use lyra_reflect_derive::{impl_reflect_simple_struct, impl_reflect_trait_value};
+
+use crate::{lyra_engine, Method, Reflect};
+
+impl_reflect_simple_struct!(lyra_math::Vec2, fields(x = f32, y = f32));
+impl_reflect_simple_struct!(lyra_math::Vec3, fields(x = f32, y = f32, z = f32));
+impl_reflect_simple_struct!(lyra_math::Vec4, fields(x = f32, y = f32, z = f32, w = f32));
+impl_reflect_simple_struct!(lyra_math::Quat, fields(x = f32, y = f32, z = f32, w = f32));
+
+impl_reflect_simple_struct!(
+    lyra_math::Transform,
+    fields(
+        translation = lyra_math::Vec3,
+        rotation = lyra_math::Quat,
+        scale = lyra_math::Vec3
+    )
+);
+
+impl_reflect_trait_value!(lyra_math::Mat4);

lyra-reflect/src/impls/impl_std.rs

@@ -4,7 +4,7 @@ use crate::List;
 
 use crate::lyra_engine;
 
-use super::{Reflect, ReflectRef, ReflectMut, util};
+use crate::{Reflect, ReflectRef, ReflectMut, util};
 
 impl_reflect_trait_value!(bool);
 impl_reflect_trait_value!(char);

lyra-reflect/src/impls/mod.rs

@@ -0,0 +1,4 @@
+pub mod impl_std;
+
+#[cfg(feature="math")]
+pub mod impl_math;

lyra-reflect/src/lib.rs

@@ -6,6 +6,8 @@ use lyra_ecs::{world::World, DynamicBundle, Component, Entity, ComponentInfo};
 
 extern crate self as lyra_reflect;
 
+pub use lyra_reflect_derive::*;
+
 #[allow(unused_imports)]
 pub(crate) mod lyra_engine {
     pub(crate) mod reflect {
@@ -34,6 +36,12 @@ pub use dynamic_tuple::*;
 pub mod reflected_field;
 pub use reflected_field::*;
 
+pub mod component;
+pub use component::*;
+
+pub mod resource;
+pub use resource::*;
+
 pub mod util;
 pub mod field;
 pub use field::*;
@@ -42,7 +50,7 @@ pub use method::*;
 pub mod registry;
 pub use registry::*;
 
-pub mod impl_std;
+pub mod impls;
 
 pub trait Reflect: Any {
     fn name(&self) -> String;
@@ -235,67 +243,48 @@ pub trait FromType<T> {
     fn from_type() -> Self;
 }
 
-#[derive(Clone)]
-pub struct ReflectedComponent {
-    pub type_id: TypeId,
-    pub info: ComponentInfo,
-    //value: Value,
-    //from_world: 
-
-    //from_world: for<'a> fn (world: &'a mut World) -> Box<dyn Reflect>,
-    /// Inserts component into entity in the world
-    fn_insert: for<'a> fn (world: &'a mut World, entity: Entity, component: &dyn Reflect),
-    /// Inserts component into a bundle
-    fn_bundle_insert: for<'a> fn (dynamic_bundle: &'a mut DynamicBundle, component: &dyn Reflect),
-    fn_reflect: for<'a> fn (world: &'a World, entity: Entity) -> Option<Ref<'a, dyn Reflect>>,
-    fn_reflect_mut: for<'a> fn (world: &'a mut World, entity: Entity) -> Option<RefMut<'a, dyn Reflect>>,
+pub trait ReflectWorldExt {
+    /// Retrieves the type registry from the world.
+    fn get_type_registry(&self) -> Ref<TypeRegistry>;
+    /// Retrieves the type registry mutably from the world.
+    fn get_type_registry_mut(&self) -> RefMut<TypeRegistry>;
+    /// Get a registered type from the type registry. Returns `None` if the type is not registered
+    fn get_type<T>(&self, type_id: TypeId) -> Option<Ref<RegisteredType>>;
+    /// Get a mutable registered type from the type registry in the world. returns `None` if the type is not registered.
+    fn get_type_mut<T>(&self, type_id: TypeId) -> Option<RefMut<RegisteredType>>;
+    /// Get a registered type, or register a new type and return it.
+    fn get_type_or_default<T>(&self, type_id: TypeId) -> RefMut<RegisteredType>;
 }
 
-impl ReflectedComponent {
-    /// Insert the reflected component into an entity.
-    pub fn insert(&self, world: &mut World, entity: Entity, component: &dyn Reflect) {
-        (self.fn_insert)(world, entity, component);
+impl ReflectWorldExt for World {
+    fn get_type_registry(&self) -> Ref<TypeRegistry> {
+        self.get_resource::<TypeRegistry>()
     }
-
-    /// Insert this component into a DynamicBundle
-    pub fn bundle_insert(&self, dynamic_bundle: &mut DynamicBundle, component: &dyn Reflect) {
-        (self.fn_bundle_insert)(dynamic_bundle, component)
+    
+    fn get_type_registry_mut(&self) -> RefMut<TypeRegistry> {
+        self.get_resource_mut::<TypeRegistry>()
     }
-
-    /// Retrieves a reflected component from an entity.
-    pub fn reflect<'a>(&'a self, world: &'a World, entity: Entity) -> Option<Ref<'a, dyn Reflect>> {
-        (self.fn_reflect)(world, entity)
-    }
-
-    /// Retrieves a reflected component from an entity.
-    pub fn reflect_mut<'a>(&'a mut self, world: &'a mut World, entity: Entity) -> Option<RefMut<'a, dyn Reflect>> {
-        (self.fn_reflect_mut)(world, entity)
-    }
-}
-
-impl<C: Component + Reflect + Default> FromType<C> for ReflectedComponent {
-    fn from_type() -> Self {
-        ReflectedComponent {
-            type_id: TypeId::of::<C>(),
-            info: ComponentInfo::new::<C>(),
-            fn_insert: |world: &mut World, entity: Entity, component: &dyn Reflect| {
-                let mut c = C::default();
-                c.apply(component);
-                world.insert(entity, (c,));
-            },
-            fn_bundle_insert: |bundle: &mut DynamicBundle, component: &dyn Reflect| {
-                let mut c = C::default();
-                c.apply(component);
-                bundle.push(c);
-            },
-            fn_reflect: |world: &World, entity: Entity| {
-                world.view_one::<&C>(entity)
-                    .get().map(|c| c as Ref<dyn Reflect>)
-            },
-            fn_reflect_mut: |world: &mut World, entity: Entity| {
-                world.view_one::<&mut C>(entity)
-                    .get().map(|c| c as RefMut<dyn Reflect>)
-            },
+    
+    fn get_type<T>(&self, type_id: TypeId) -> Option<Ref<RegisteredType>> {
+        let r = self.get_resource::<TypeRegistry>();
+        if r.has_type(type_id) {
+            Some(Ref::map(r, |tr| tr.get_type(type_id).unwrap()))
+        } else {
+            None
         }
     }
+
+    fn get_type_mut<T>(&self, type_id: TypeId) -> Option<RefMut<RegisteredType>> {
+        let r = self.get_resource_mut::<TypeRegistry>();
+        if r.has_type(type_id) {
+            Some(RefMut::map(r, |tr| tr.get_type_mut(type_id).unwrap()))
+        } else {
+            None
+        }
+    }
+
+    fn get_type_or_default<T>(&self, type_id: TypeId) -> RefMut<RegisteredType> {
+        let r = self.get_resource_mut::<TypeRegistry>();
+        RefMut::map(r, |tr| tr.get_type_or_default(type_id))
+    }
 }

lyra-reflect/src/reflected_enum.rs

@@ -52,7 +52,6 @@ pub trait Enum: Reflect {
 #[allow(unused_variables)]
 #[cfg(test)]
 mod tests {
-    use lyra_reflect_derive::Reflect;
 
     use super::EnumType;
     use crate::{lyra_engine, Reflect, ReflectRef};

lyra-reflect/src/reflected_struct.rs

@@ -41,7 +41,6 @@ pub trait Struct: Reflect {
 
 #[cfg(test)]
 mod tests {
-    use lyra_reflect_derive::Reflect;
     use crate::{Reflect, ReflectRef, ReflectMut};
     use crate::lyra_engine;
 

lyra-reflect/src/registry.rs

@@ -21,6 +21,12 @@ impl TypeRegistry {
         self.inner.get_mut(&type_id)
     }
 
+    /// Get a registered type, or register a new type and return it.
+    pub fn get_type_or_default(&mut self, type_id: TypeId) -> &mut RegisteredType {
+        self.inner.entry(type_id)
+            .or_insert(RegisteredType::default())
+    }
+
     pub fn register_type<T>(&mut self)
     where
         T: AsRegisteredType + 'static

lyra-reflect/src/resource.rs

@@ -0,0 +1,63 @@
+use std::{any::{Any, TypeId}, cell::{Ref, RefMut}, ptr::NonNull};
+
+use lyra_ecs::{World, ResourceObject};
+
+use crate::{Reflect, FromType};
+
+#[derive(Clone)]
+pub struct ReflectedResource {
+    pub type_id: TypeId,
+
+    fn_reflect: for<'a> fn (world: &'a World) -> Option<Ref<'a, dyn Reflect>>,
+    fn_reflect_mut: for<'a> fn (world: &'a mut World) -> Option<RefMut<'a, dyn Reflect>>,
+    fn_reflect_ptr: fn (world: &mut World) -> Option<NonNull<u8>>,
+    fn_refl_insert: fn (world: &mut World, this: Box<dyn Reflect>),
+}
+
+impl ReflectedResource {
+    /// Retrieves the reflected resource from the world.
+    pub fn reflect<'a>(&self, world: &'a World) -> Option<Ref<'a, dyn Reflect>> {
+        (self.fn_reflect)(world)
+    }
+
+    /// Retrieves a mutable reflected resource from the world.
+    pub fn reflect_mut<'a>(&self, world: &'a mut World) -> Option<RefMut<'a, dyn Reflect>> {
+        (self.fn_reflect_mut)(world)
+    }
+
+    pub fn reflect_ptr(&self, world: &mut World) ->  Option<NonNull<u8>> {
+        (self.fn_reflect_ptr)(world)
+    }
+
+    /// Insert the resource into the world.
+    pub fn insert(&self, world: &mut World, this: Box<dyn Reflect>) {
+        (self.fn_refl_insert)(world, this)
+    }
+}
+
+impl<T: ResourceObject + Reflect> FromType<T> for ReflectedResource {
+    fn from_type() -> Self {
+        Self {
+            type_id: TypeId::of::<T>(),
+            fn_reflect: |world: &World| {
+                world.try_get_resource::<T>()
+                    .map(|r| r as Ref<dyn Reflect>)
+            },
+            fn_reflect_mut: |world: &mut World| {
+                world.try_get_resource_mut::<T>()
+                    .map(|r| r as RefMut<dyn Reflect>)
+            },
+            fn_reflect_ptr: |world: &mut World| unsafe {
+                world.try_get_resource_ptr::<T>()
+                    .map(|ptr| ptr.cast::<u8>())
+            },
+            fn_refl_insert: |world: &mut World, this: Box<dyn Reflect>| {
+                let res = this as Box<dyn Any>;
+                let res = res.downcast::<T>()
+                    .expect("Provided a non-matching type to ReflectedResource insert method!");
+                let res = *res;
+                world.add_resource(res);
+            }
+        }
+    }
+}

lyra-resource/Cargo.toml

@@ -6,15 +6,19 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+lyra-ecs = { path = "../lyra-ecs" }
 anyhow = "1.0.75"
 base64 = "0.21.4"
-edict = "0.5.0"
+crossbeam = { version = "0.8.4", features = [ "crossbeam-channel" ] }
 glam = "0.24.1"
 gltf = { version = "1.3.0", features = ["KHR_materials_pbrSpecularGlossiness", "KHR_materials_specular"] }
 image = "0.24.7"
 # not using custom matcher, or file type from file path
 infer = { version = "0.15.0", default-features = false }
 mime = "0.3.17"
+notify = "6.1.1"
+notify-debouncer-full = "0.3.1"
+#notify = { version = "6.1.1", default-features = false, features = [ "fsevent-sys", "macos_fsevent" ]} # disables crossbeam-channel
 percent-encoding = "2.3.0"
 thiserror = "1.0.48"
 tracing = "0.1.37"

lyra-resource/src/lib.rs

@@ -16,4 +16,17 @@ pub use model::*;
 pub mod material;
 pub use material::*;
 
-pub(crate) mod util;
+pub mod world_ext;
+pub use world_ext::*;
+
+pub(crate) mod util;
+
+pub use crossbeam::channel as channel;
+pub use notify;
+
+#[allow(unused_imports)]
+pub(crate) mod lyra_engine {
+    pub(crate) mod ecs {
+        pub use lyra_ecs::*;
+    }
+}

lyra-resource/src/loader/image.rs

@@ -2,7 +2,7 @@ use std::{fs::File, sync::Arc, io::Read};
 
 use image::ImageError;
 
-use crate::{resource_manager::ResourceStorage, texture::Texture, resource::Resource, ResourceManager};
+use crate::{resource_manager::ResourceStorage, texture::Texture, resource::ResHandle, ResourceManager};
 
 use super::{LoaderError, ResourceLoader};
 
@@ -62,7 +62,7 @@ impl ResourceLoader for ImageLoader {
         let texture = Texture {
             image,
         };
-        let res = Resource::with_data(path, texture);
+        let res = ResHandle::with_data(path, texture);
 
         Ok(Arc::new(res))
     }
@@ -76,7 +76,7 @@ impl ResourceLoader for ImageLoader {
         let texture = Texture {
             image,
         };
-        let res = Resource::with_data(&uuid::Uuid::new_v4().to_string(), texture);
+        let res = ResHandle::with_data(&uuid::Uuid::new_v4().to_string(), texture);
         
         Ok(Arc::new(res))
     }

lyra-resource/src/loader/mod.rs

@@ -30,7 +30,7 @@ impl From<io::Error> for LoaderError {
 }
 
 pub trait ResourceLoader {
-    /// Returns the extensions that this loader supports.
+    /// Returns the extensions that this loader supports. Does not include the `.`
     fn extensions(&self) -> &[&str];
     /// Returns the mime types that this loader supports.
     fn mime_types(&self) -> &[&str];

lyra-resource/src/loader/model.rs

@@ -2,7 +2,7 @@ use std::{sync::Arc, path::PathBuf};
 
 use thiserror::Error;
 
-use crate::{ResourceLoader, LoaderError, Mesh, Model, MeshVertexAttribute, VertexAttributeData, Resource, Material, MeshIndices, ResourceManager, util};
+use crate::{ResourceLoader, LoaderError, Mesh, Model, MeshVertexAttribute, VertexAttributeData, ResHandle, Material, MeshIndices, ResourceManager, util};
 
 use tracing::debug;
 
@@ -189,7 +189,7 @@ impl ResourceLoader for ModelLoader {
             .collect();
         debug!("Loaded {} meshes, and {} materials from '{}'", meshes.len(), materials.len(), path);
 
-        Ok(Arc::new(Resource::with_data(path, Model::new(meshes))))
+        Ok(Arc::new(ResHandle::with_data(path, Model::new(meshes))))
     }
 
     #[allow(unused_variables)]
@@ -216,8 +216,8 @@ mod tests {
         let mut manager = ResourceManager::new();
         let loader = ModelLoader::default();
         let model = loader.load(&mut manager, &path).unwrap();
-        let model = Arc::downcast::<Resource<Model>>(model.as_arc_any()).unwrap();
-        let model = model.data.as_ref().unwrap();
+        let model = Arc::downcast::<ResHandle<Model>>(model.as_arc_any()).unwrap();
+        let model = model.data_ref();
         assert_eq!(model.meshes.len(), 1); // There should only be 1 mesh
         let mesh = &model.meshes[0];
         assert!(mesh.position().unwrap().len() > 0);

lyra-resource/src/model.rs

@@ -1,6 +1,7 @@
 use std::collections::HashMap;
 
 use crate::Material;
+use crate::lyra_engine;
 
 #[repr(C)]
 #[derive(Clone, Debug, PartialEq)]
@@ -81,7 +82,7 @@ pub enum MeshVertexAttribute {
     Other(String),
 }
 
-#[derive(Clone, edict::Component)]
+#[derive(Clone, lyra_ecs::Component)]
 pub struct Mesh {
     pub uuid: uuid::Uuid,
     pub attributes: HashMap<MeshVertexAttribute, VertexAttributeData>,

lyra-resource/src/resource.rs

@@ -1,32 +1,174 @@
-use std::sync::Arc;
+use std::{any::Any, sync::{Arc, RwLock}};
 
 use uuid::Uuid;
 
+use crate::ResourceStorage;
+
 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
 pub enum ResourceState {
     Loading,
     Ready,
 }
 
-#[derive(Clone)]
-pub struct Resource<T> {
-    pub path: String,
-    pub data: Option<Arc<T>>,
-    pub uuid: Uuid,
-    pub state: ResourceState,
+pub struct ResourceDataRef<'a, T> {
+    guard: std::sync::RwLockReadGuard<'a, Resource<T>>,
 }
 
-/// A helper type to make it easier to use resources
-pub type ResHandle<T> = Arc<Resource<T>>;
+impl<'a, T> std::ops::Deref for ResourceDataRef<'a, T> {
+    type Target = T;
 
-impl<T> Resource<T> {
+    fn deref(&self) -> &Self::Target {
+        // safety: this struct must only be created if the resource is loaded
+        self.guard.data.as_ref().unwrap()
+    }
+}
+
+pub struct Resource<T> {
+    path: String,
+    pub(crate) data: Option<T>,
+    pub(crate) version: usize,
+    pub(crate) state: ResourceState,
+    uuid: Uuid,
+    pub(crate) is_watched: bool,
+}
+
+/// A handle to a resource. 
+/// 
+/// # Note
+/// This struct has an inner [`RwLock`] to the resource data, so most methods may be blocking.
+/// However, the only times it will be blocking is if another thread is reloading the resource
+/// and has a write lock on the data. This means that most of the time, it is not blocking.
+pub struct ResHandle<T> {
+    pub(crate) data: Arc<RwLock<Resource<T>>>,
+}
+
+impl<T> Clone for ResHandle<T> {
+    fn clone(&self) -> Self {
+        Self { data: self.data.clone() }
+    }
+}
+
+impl<T> ResHandle<T> {
     /// Create the resource with data, its assumed the state is `Ready`
     pub fn with_data(path: &str, data: T) -> Self {
-        Self {
+        let res_version = Resource {
             path: path.to_string(),
-            data: Some(Arc::new(data)),
-            uuid: Uuid::new_v4(),
+            data: Some(data),
+            version: 0,
             state: ResourceState::Ready,
+            uuid: Uuid::new_v4(),
+            is_watched: false,
+        };
+
+        Self {
+            data: Arc::new(RwLock::new(res_version)),
         }
     }
+
+    /// Returns a boolean indicating if this resource's path is being watched.
+    pub fn is_watched(&self) -> bool {
+        let d = self.data.read().expect("Resource mutex was poisoned!");
+        d.is_watched
+    }
+
+    /// Returns a boolean indicating if this resource is loaded
+    pub fn is_loaded(&self) -> bool {
+        let d = self.data.read().expect("Resource mutex was poisoned!");
+        d.state == ResourceState::Ready
+    }
+
+    /// Returns the current state of the resource.
+    pub fn state(&self) -> ResourceState {
+        let d = self.data.read().expect("Resource mutex was poisoned!");
+        d.state
+    }
+
+    /// Returns the path that the resource was loaded from.
+    pub fn path(&self) -> String {
+        let d = self.data.read().expect("Resource mutex was poisoned!");
+        d.path.to_string()
+    }
+
+    /// Returns the uuid of the resource.
+    pub fn uuid(&self) -> Uuid {
+        let d = self.data.read().expect("Resource mutex was poisoned!");
+        d.uuid
+    }
+
+    /// Retrieves the current version of the resource. This gets incremented when the resource
+    /// is reloaded.
+    pub fn version(&self) -> usize {
+        let d = self.data.read().expect("Resource mutex was poisoned!");
+        d.version
+    }
+
+    /// Get a reference to the data in the resource
+    ///
+    /// # Panics
+    /// Panics if the resource was not loaded yet.
+    pub fn data_ref<'a>(&'a self) -> ResourceDataRef<'a, T> {
+        let d = self.data.read().expect("Resource mutex was poisoned!");
+        ResourceDataRef {
+            guard: d
+        }
+    }
+
+    /// Attempt to get a borrow to the resource data. Returns `None` if the resource is not loaded.
+    pub fn try_data_ref<'a>(&'a self) -> Option<ResourceDataRef<'a, T>> {
+        if self.is_loaded() {
+            let d = self.data.read().expect("Resource mutex was poisoned!");
+            Some(ResourceDataRef {
+                guard: d
+            })
+        } else {
+            None
+        }
+    }
+}
+
+impl<T: Send + Sync + 'static> ResourceStorage for ResHandle<T> {
+    fn as_any(&self) -> &dyn Any {
+        self
+    }
+
+    fn as_any_mut(&mut self) -> &mut dyn Any {
+        self
+    }
+
+    fn as_arc_any(self: Arc<Self>) -> Arc<dyn Any + Send + Sync> {
+        self.clone()
+    }
+
+    fn as_box_any(self: Box<Self>) -> Box<dyn Any + Send + Sync> {
+        self
+    }
+
+    fn set_watched(&self, watched: bool) {
+        let mut w = self.data.write().unwrap();
+        w.is_watched = watched;
+    }
+
+    fn path(&self) -> String {
+        self.path()
+    }
+
+    fn version(&self) -> usize {
+        self.version()
+    }
+
+    fn state(&self) -> ResourceState {
+        self.state()
+    }
+
+    fn uuid(&self) -> Uuid {
+        self.uuid()
+    }
+
+    fn is_watched(&self) -> bool {
+        self.is_watched()
+    }
+
+    fn is_loaded(&self) -> bool {
+        self.is_loaded()
+    }
 }

lyra-resource/src/resource_manager.rs

@@ -1,28 +1,30 @@
-use std::{sync::Arc, collections::HashMap, any::Any};
+use std::{sync::{Arc, RwLock}, collections::HashMap, any::Any, path::Path, time::Duration};
 
+use crossbeam::channel::Receiver;
+use notify::{Watcher, RecommendedWatcher};
+use notify_debouncer_full::{DebouncedEvent, FileIdMap};
 use thiserror::Error;
+use uuid::Uuid;
 
-use crate::{resource::Resource, loader::{ResourceLoader, LoaderError, image::ImageLoader, model::ModelLoader}};
+use crate::{loader::{image::ImageLoader, model::ModelLoader, LoaderError, ResourceLoader}, resource::ResHandle, ResourceState};
 
+/// A trait for type erased storage of a resource.
+/// Implemented for [`ResHandle<T>`]
 pub trait ResourceStorage: Send + Sync + Any + 'static {
     fn as_any(&self) -> &dyn Any;
     fn as_any_mut(&mut self) -> &mut dyn Any;
     fn as_arc_any(self: Arc<Self>) -> Arc<dyn Any + Send + Sync>;
-}
+    fn as_box_any(self: Box<Self>) -> Box<dyn Any + Send + Sync>;
+    /// Do not set a resource to watched if it is not actually watched.
+    /// This is used internally.
+    fn set_watched(&self, watched: bool);
 
-/// Implements this trait for anything that fits the type bounds
-impl<T: Send + Sync + 'static> ResourceStorage for T {
-    fn as_any(&self) -> &dyn Any {
-        self
-    }
-
-    fn as_any_mut(&mut self) -> &mut dyn Any {
-        self
-    }
-
-    fn as_arc_any(self: Arc<Self>) -> Arc<dyn Any + Send + Sync> {
-        self.clone()
-    }
+    fn path(&self) -> String;
+    fn version(&self) -> usize;
+    fn state(&self) -> ResourceState;
+    fn uuid(&self) -> Uuid;
+    fn is_watched(&self) -> bool;
+    fn is_loaded(&self) -> bool;
 }
 
 #[derive(Error, Debug)]
@@ -46,9 +48,16 @@ impl From<LoaderError> for RequestError {
 /// A struct that stores all Manager data. This is requried for sending 
 //struct ManagerStorage
 
+/// A struct that
+pub struct ResourceWatcher {
+    debouncer: Arc<RwLock<notify_debouncer_full::Debouncer<RecommendedWatcher, FileIdMap>>>,
+    events_recv: Receiver<Result<Vec<DebouncedEvent>, Vec<notify::Error>>>,
+}
+
 pub struct ResourceManager {
     resources: HashMap<String, Arc<dyn ResourceStorage>>,
     loaders: Vec<Arc<dyn ResourceLoader>>,
+    watchers: HashMap<String, ResourceWatcher>,
 }
 
 impl Default for ResourceManager {
@@ -62,6 +71,7 @@ impl ResourceManager {
         Self {
             resources: HashMap::new(),
             loaders: vec![ Arc::new(ImageLoader), Arc::new(ModelLoader) ],
+            watchers: HashMap::new(),
         }
     }
 
@@ -73,11 +83,15 @@ impl ResourceManager {
         self.loaders.push(Arc::new(L::default()));
     }
 
-    pub fn request<T: Send + Sync + Any + 'static>(&mut self, path: &str) -> Result<Arc<Resource<T>>, RequestError> {
+    pub fn request<T>(&mut self, path: &str) -> Result<ResHandle<T>, RequestError>
+    where
+        T: Send + Sync + Any + 'static
+    {
         match self.resources.get(&path.to_string()) {
             Some(res) => {
                 let res = res.clone().as_arc_any();
-                let res = res.downcast::<Resource<T>>().expect("Failure to downcast resource");
+                let res: Arc<ResHandle<T>> = res.downcast::<ResHandle<T>>().expect("Failure to downcast resource");
+                let res = ResHandle::<T>::clone(&res);
 
                 Ok(res)
             },
@@ -88,12 +102,43 @@ impl ResourceManager {
                     // Load the resource and store it
                     let loader = Arc::clone(loader); // stop borrowing from self
                     let res = loader.load(self, path)?;
+                    let res: Arc<dyn ResourceStorage> = Arc::from(res);
                     self.resources.insert(path.to_string(), res.clone());
 
                     // cast Arc<dyn ResourceStorage> to Arc<Resource<T>
                     let res = res.as_arc_any();
-                    let res = res.downcast::<Resource<T>>()
+                    let res = res.downcast::<ResHandle<T>>()
                         .expect("Failure to downcast resource! Does the loader return an `Arc<Resource<T>>`?");
+                    let res = ResHandle::<T>::clone(&res);
+
+                    Ok(res)
+                } else {
+                    Err(RequestError::UnsupportedFileExtension(path.to_string()))
+                }
+            }
+        }
+    }
+
+    /// Request a resource without downcasting to a ResHandle<T>.
+    /// Whenever you're ready to downcast, you can do so like this:
+    /// ```compile_fail
+    /// let arc_any = res_arc.as_arc_any();
+    /// let res: Arc<ResHandle<T>> = res.downcast::<ResHandle<T>>().expect("Failure to downcast resource");
+    /// ```
+    pub fn request_raw(&mut self, path: &str) -> Result<Arc<dyn ResourceStorage>, RequestError> {
+        match self.resources.get(&path.to_string()) {
+            Some(res) => {
+                Ok(res.clone())
+            },
+            None => {
+                if let Some(loader) = self.loaders.iter()
+                        .find(|l| l.does_support_file(path)) {
+
+                    // Load the resource and store it
+                    let loader = Arc::clone(loader); // stop borrowing from self
+                    let res = loader.load(self, path)?;
+                    let res: Arc<dyn ResourceStorage> = Arc::from(res);
+                    self.resources.insert(path.to_string(), res.clone());
 
                     Ok(res)
                 } else {
@@ -112,18 +157,23 @@ impl ResourceManager {
     /// * `bytes` - The bytes to store.
     /// 
     /// Returns: The `Arc` to the now stored resource
-    pub fn load_bytes<T: Send + Sync + Any + 'static>(&mut self, ident: &str, mime_type: &str, bytes: Vec<u8>, offset: usize, length: usize) -> Result<Arc<Resource<T>>, RequestError> {
+    pub fn load_bytes<T>(&mut self, ident: &str, mime_type: &str, bytes: Vec<u8>, offset: usize, length: usize) -> Result<ResHandle<T>, RequestError>
+    where
+        T: Send + Sync + Any + 'static
+    {
         if let Some(loader) = self.loaders.iter()
                 .find(|l| l.does_support_mime(mime_type)) {
             let loader = loader.clone();
             let res = loader.load_bytes(self, bytes, offset, length)?;
+            let res: Arc<dyn ResourceStorage> = Arc::from(res);
             self.resources.insert(ident.to_string(), res.clone());
             // code here...
 
             // cast Arc<dyn ResourceStorage> to Arc<Resource<T>
             let res = res.as_arc_any();
-            let res = res.downcast::<Resource<T>>()
+            let res = res.downcast::<ResHandle<T>>()
                 .expect("Failure to downcast resource! Does the loader return an `Arc<Resource<T>>`?");
+            let res = ResHandle::<T>::clone(&res);
 
             Ok(res)
         } else {
@@ -132,11 +182,14 @@ impl ResourceManager {
     }
 
     /// Requests bytes from the manager.
-    pub fn request_loaded_bytes<T: Send + Sync + Any + 'static>(&mut self, ident: &str) -> Result<Arc<Resource<T>>, RequestError> {
+    pub fn request_loaded_bytes<T>(&mut self, ident: &str) -> Result<Arc<ResHandle<T>>, RequestError>
+    where
+        T: Send + Sync + Any + 'static
+    {
         match self.resources.get(&ident.to_string()) {
             Some(res) => {
                 let res = res.clone().as_arc_any();
-                let res = res.downcast::<Resource<T>>().expect("Failure to downcast resource");
+                let res = res.downcast::<ResHandle<T>>().expect("Failure to downcast resource");
 
                 Ok(res)
             },
@@ -145,6 +198,91 @@ impl ResourceManager {
             }
         }
     }
+
+    /// Start watching a path for changes. Returns a mspc channel that will send events
+    pub fn watch(&mut self, path: &str, recursive: bool) -> notify::Result<Receiver<Result<Vec<DebouncedEvent>, Vec<notify::Error>>>> {
+        let (send, recv) = crossbeam::channel::bounded(15);
+        let mut watcher = notify_debouncer_full::new_debouncer(Duration::from_millis(1000), None, send)?;
+
+        let recurse_mode = match recursive {
+            true => notify::RecursiveMode::Recursive,
+            false => notify::RecursiveMode::NonRecursive,
+        };
+        watcher.watcher().watch(path.as_ref(), recurse_mode)?;
+
+        let watcher = Arc::new(RwLock::new(watcher));
+        let watcher = ResourceWatcher {
+            debouncer: watcher,
+            events_recv: recv.clone(),
+        };
+
+        self.watchers.insert(path.to_string(), watcher);
+
+        let res = self.resources.get(&path.to_string())
+            .expect("The path that was watched has not been loaded as a resource yet");
+        res.set_watched(true);
+
+        Ok(recv)
+    }
+
+    /// Stops watching a path
+    pub fn stop_watching(&mut self, path: &str) -> notify::Result<()> {
+        if let Some(watcher) = self.watchers.get(path) {
+            let mut watcher = watcher.debouncer.write().unwrap();
+            watcher.watcher().unwatch(Path::new(path))?;
+
+            // unwrap is safe since only loaded resources can be watched
+            let res = self.resources.get(&path.to_string()).unwrap();
+            res.set_watched(false);
+        }
+
+        Ok(())
+    }
+
+    /// Returns a mspc receiver for watcher events of a specific path. The path must already
+    /// be watched with [`ResourceManager::watch`] for this to return `Some`.
+    pub fn watcher_event_recv(&self, path: &str) -> Option<Receiver<Result<Vec<DebouncedEvent>, Vec<notify::Error>>>> {
+        self.watchers.get(&path.to_string())
+            .map(|w| w.events_recv.clone())
+    }
+
+    /// Reloads a resource. The data inside the resource will be updated, the state may
+    pub fn reload<T>(&mut self, resource: ResHandle<T>) -> Result<(), RequestError>
+    where
+        T: Send + Sync + Any + 'static
+    {
+        let path = resource.path();
+        if let Some(loader) = self.loaders.iter()
+                .find(|l| l.does_support_file(&path)) {
+            println!("got loader");
+            let loader = Arc::clone(loader); // stop borrowing from self
+            let loaded = loader.load(self, &path)?;
+            let loaded = loaded.as_arc_any();
+            
+            let loaded = loaded.downcast::<ResHandle<T>>()
+                .unwrap();
+            let loaded = match Arc::try_unwrap(loaded) {
+                Ok(v) => v,
+                Err(_) => panic!("Seems impossible that this would happen, the resource was just loaded!"),
+            };
+            let loaded = loaded.data;
+            let loaded = match Arc::try_unwrap(loaded) {
+                Ok(v) => v,
+                Err(_) => panic!("Seems impossible that this would happen, the resource was just loaded!"),
+            };
+            let loaded = loaded.into_inner().unwrap();
+
+            let res_lock = &resource.data;
+            let mut res_lock = res_lock.write().unwrap();
+            let version = res_lock.version;
+            
+            res_lock.data = loaded.data;
+            res_lock.state = loaded.state;
+            res_lock.version = version + 1;
+        }
+
+        Ok(())
+    }
 }
 
 #[cfg(test)]
@@ -165,20 +303,20 @@ mod tests {
     fn load_image() {
         let mut man = ResourceManager::new();
         let res = man.request::<Texture>(&get_image("squiggles.png")).unwrap();
-        assert_eq!(res.state, ResourceState::Ready);
-        let img = res.data.as_ref();
+        assert_eq!(res.state(), ResourceState::Ready);
+        let img = res.try_data_ref();
         img.unwrap();
     }
 
-    /// Ensures that only one copy of the same thing made
+    /// Ensures that only one copy of the same data was made
     #[test]
     fn ensure_single() {
         let mut man = ResourceManager::new();
         let res = man.request::<Texture>(&get_image("squiggles.png")).unwrap();
-        assert_eq!(Arc::strong_count(&res), 2);
+        assert_eq!(Arc::strong_count(&res.data), 2);
 
         let resagain = man.request::<Texture>(&get_image("squiggles.png")).unwrap();
-        assert_eq!(Arc::strong_count(&resagain), 3);
+        assert_eq!(Arc::strong_count(&resagain.data), 3);
     }
 
     /// Ensures that an error is returned when a file that doesn't exist is requested
@@ -196,4 +334,42 @@ mod tests {
             }
         );
     }
+
+    #[test]
+    fn reload_image() {
+        let mut man = ResourceManager::new();
+        let res = man.request::<Texture>(&get_image("squiggles.png")).unwrap();
+        assert_eq!(res.state(), ResourceState::Ready);
+        let img = res.try_data_ref();
+        img.unwrap();
+
+        println!("Path = {}", res.path());
+        man.reload(res.clone()).unwrap();
+        assert_eq!(res.version(), 1);
+
+        man.reload(res.clone()).unwrap();
+        assert_eq!(res.version(), 2);
+    }
+
+    #[test]
+    fn watch_image() {
+        let orig_path = get_image("squiggles.png");
+        let image_path = get_image("squiggles_test.png");
+        std::fs::copy(orig_path, &image_path).unwrap();
+
+        let mut man = ResourceManager::new();
+        let res = man.request::<Texture>(&image_path).unwrap();
+        assert_eq!(res.state(), ResourceState::Ready);
+        let img = res.try_data_ref();
+        img.unwrap();
+
+        let recv = man.watch(&image_path, false).unwrap();
+
+        std::fs::remove_file(&image_path).unwrap();
+
+        let event = recv.recv().unwrap();
+        let event = event.unwrap();
+        
+        assert!(event.iter().any(|ev| ev.kind.is_remove() || ev.kind.is_modify()));
+    }
 }

lyra-resource/src/world_ext.rs

@@ -0,0 +1,75 @@
+use std::any::Any;
+
+use crossbeam::channel::Receiver;
+use lyra_ecs::World;
+use notify_debouncer_full::DebouncedEvent;
+
+use crate::{RequestError, ResHandle, ResourceLoader, ResourceManager};
+
+pub trait WorldAssetExt {
+    /// Register a resource loader with the resource manager.
+    fn register_res_loader<L>(&mut self)
+    where
+        L: ResourceLoader + Default + 'static;
+    
+    /// Request a resource from the resource manager.
+    fn request_res<T>(&mut self, path: &str) -> Result<ResHandle<T>, RequestError>
+    where
+        T: Send + Sync + Any + 'static;
+    
+    /// Start watching a resource for changes. Returns a crossbeam channel that can be used to listen for events.
+    fn watch_res(&mut self, path: &str, recursive: bool) -> notify::Result<Receiver<Result<Vec<DebouncedEvent>, Vec<notify::Error>>>>;
+    
+    /// Stop watching a resource for changes.
+    fn stop_watching_res(&mut self, path: &str) -> notify::Result<()>;
+    
+    /// Try to retrieve a crossbeam channel for a path that is currently watched. Returns None if the path is not watched
+    fn res_watcher_recv(&self, path: &str) -> Option<Receiver<Result<Vec<DebouncedEvent>, Vec<notify::Error>>>>;
+
+    /// Reload a resource. The data will be updated in the handle. This is not
+    /// automatically triggered if the resource is being watched.
+    fn reload_res<T>(&mut self, resource: ResHandle<T>) -> Result<(), RequestError>
+    where
+        T: Send + Sync + Any + 'static;
+}
+
+impl WorldAssetExt for World {
+    fn register_res_loader<L>(&mut self)
+    where
+        L: ResourceLoader + Default + 'static
+    {
+        let mut man = self.get_resource_or_default::<ResourceManager>();
+        man.register_loader::<L>();
+    }
+
+    fn request_res<T>(&mut self, path: &str) -> Result<ResHandle<T>, RequestError>
+    where
+        T: Send + Sync + Any + 'static
+    {
+        let mut man = self.get_resource_or_default::<ResourceManager>();
+        man.request(path)
+    }
+
+    fn watch_res(&mut self, path: &str, recursive: bool) -> notify::Result<Receiver<Result<Vec<DebouncedEvent>, Vec<notify::Error>>>> {
+        let mut man = self.get_resource_or_default::<ResourceManager>();
+        man.watch(path, recursive)
+    }
+
+    fn stop_watching_res(&mut self, path: &str) -> notify::Result<()> {
+        let mut man = self.get_resource_or_default::<ResourceManager>();
+        man.stop_watching(path)
+    }
+
+    fn res_watcher_recv(&self, path: &str) -> Option<Receiver<Result<Vec<DebouncedEvent>, Vec<notify::Error>>>> {
+        let man = self.get_resource::<ResourceManager>();
+        man.watcher_event_recv(path)
+    }
+
+    fn reload_res<T>(&mut self, resource: ResHandle<T>) -> Result<(), RequestError>
+    where
+        T: Send + Sync + Any + 'static
+    {
+        let mut man = self.get_resource_or_default::<ResourceManager>();
+        man.reload(resource)
+    }
+}

lyra-scripting/Cargo.toml

@@ -7,11 +7,13 @@ edition = "2021"
 
 [features]
 default = ["lua"]
-lua = ["dep:mlua"]
+lua = ["dep:elua"]
+teal = ["lua", "elua/teal"]
 
 [dependencies]
-lyra-ecs = { path = "../lyra-ecs" }
-lyra-reflect = { path = "../lyra-reflect" }
+lyra-scripting-derive = { path = "lyra-scripting-derive" }
+lyra-ecs = { path = "../lyra-ecs", features = [ "math" ] }
+lyra-reflect = { path = "../lyra-reflect", features = [ "math" ] }
 lyra-resource = { path = "../lyra-resource" }
 lyra-game = { path = "../lyra-game" }
 thiserror = "1.0.50"
@@ -19,8 +21,10 @@ anyhow = "1.0.77"
 tracing = "0.1.37"
 
 # enabled with lua feature
-mlua = { version = "0.9.2", features = ["lua54"], optional = true } # luajit maybe?
+#mlua = { version = "0.9.2", features = ["lua54"], optional = true } # luajit maybe?
+elua = { path = "./elua", optional = true }
+itertools = "0.12.0"
 
 
 [dev-dependencies]
-tracing-subscriber = { version = "0.3.16", features = [ "tracing-log" ] }
+tracing-subscriber = { version = "0.3.16", features = [ "tracing-log" ] }

lyra-scripting/elua

@@ -0,0 +1 @@
+Subproject commit 54c9926a04cdef657289fd67730c0b85d1bdda3e

lyra-scripting/lyra-scripting-derive/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "lyra-scripting-derive"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+proc-macro = true
+
+[dependencies]
+proc-macro2 = "1.0.70"
+quote = "1.0.33"
+syn = "2.0.41"

lyra-scripting/lyra-scripting-derive/src/lib.rs

@@ -0,0 +1,723 @@
+use proc_macro2::{Ident, Span};
+use quote::quote;
+use syn::{parse_macro_input, Path, Token, token, parenthesized, punctuated::Punctuated, braced};
+
+mod mat_wrapper;
+use mat_wrapper::MatWrapper;
+
+const FN_NAME_INTERNAL_REFLECT_TYPE: &str = "__lyra_internal_reflect_type";
+const FN_NAME_INTERNAL_REFLECT: &str = "__lyra_internal_reflect";
+
+pub(crate) struct MetaMethod {
+    pub ident: Ident,
+    pub mods: Vec<Ident>,
+}
+
+impl syn::parse::Parse for MetaMethod {
+    fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
+        let ident: Ident = input.parse()?;
+
+        let mods = if input.peek(token::Paren) {
+            let content;
+            let _parens: token::Paren = parenthesized!(content in input);
+            content.parse_terminated(Ident::parse, Token![,])?
+                .into_iter().collect()
+        } else { vec![] };
+
+        Ok(Self {
+            ident,
+            mods,
+        })
+    }
+}
+
+impl MetaMethod {
+    /// Returns a boolean if an identifier is a lua wrapper, and therefore also userdata
+    fn is_arg_wrapper(ident: &Ident) -> bool {
+        let s = ident.to_string();
+        s.starts_with("Lua")
+    }
+
+    /// Returns a boolean indiciating if the metamethod has takes in any arguments
+    fn does_metamethod_have_arg(metamethod: &Ident) -> bool {
+        let mm_str = metamethod.to_string();
+        let mm_str = mm_str.as_str();
+        match mm_str {
+            "Add" | "Sub" | "Div" | "Mul" | "Mod" | "Eq" | "Shl" | "Shr" | "BAnd" | "BOr"
+                    | "BXor" => {
+                true
+            },
+            "Unm" | "BNot" | "ToString" => {
+                false
+            },
+            _ => todo!(),
+        }
+    }
+
+    /// returns the tokens of the body of the metamethod
+    /// 
+    /// Parameters
+    /// * `metamethod` - The ident of the metamethod that is being implemented.
+    /// * `other` - The tokens of the argument used in the metamethod.
+    fn get_method_body(metamethod: &Ident, other: proc_macro2::TokenStream) -> proc_macro2::TokenStream {
+        let mm_str = metamethod.to_string();
+        let mm_str = mm_str.as_str();
+        match mm_str {
+            "Add" | "Sub" | "Div" | "Mul" | "Mod" => {
+                let symbol = match mm_str {
+                    "Add" => quote!(+),
+                    "Sub" => quote!(-),
+                    "Div" => quote!(/),
+                    "Mul" => quote!(*),
+                    "Mod" => quote!(%),
+                    _ => unreachable!(), // the string was just checked to be one of these
+                };
+
+                quote! {
+                    Ok(Self(this.0 #symbol #other))
+                }
+            },
+            "Unm" => {
+                quote! {
+                    Ok(Self(-this.0))
+                }
+            },
+            "Eq" => {
+                quote! {
+                    Ok(this.0 == #other)
+                }
+            },
+            "Shl" => {
+                quote! {
+                    Ok(Self(this.0 << #other))
+                }
+            }
+            "Shr" => {
+                quote! {
+                    Ok(Self(this.0 >> #other))
+                }
+            },
+            "BAnd" | "BOr" | "BXor" => {
+                let symbol = match mm_str {
+                    "BAnd" => {
+                        quote!(&)
+                    },
+                    "BOr" => {
+                        quote!(|)
+                    },
+                    "BXor" => {
+                        quote!(^)
+                    },
+                    _ => unreachable!() // the string was just checked to be one of these
+                };
+
+                quote! {
+                    Ok(Self(this.0 #symbol #other))
+                }
+            },
+            "BNot" => {
+                quote! {
+                    Ok(Self(!this.0))
+                }
+            },
+            "ToString" => {
+                quote! {
+                    Ok(format!("{:?}", this.0))
+                }
+            },
+            _ => syn::Error::new_spanned(metamethod, 
+                "unsupported auto implementation of metamethod").to_compile_error(),
+        }
+    }
+
+    fn get_body_for_arg(mt_ident: &Ident, arg_ident: &Ident, arg_param: proc_macro2::TokenStream) -> proc_macro2::TokenStream {
+        let other: proc_macro2::TokenStream = if Self::is_arg_wrapper(arg_ident) {
+            // Lua wrappers must be dereferenced
+            quote! {
+                #arg_param.0
+            }
+        } else {
+            quote! {
+                #arg_param
+            }
+        };
+        Self::get_method_body(&mt_ident, other)
+    }
+
+    pub fn to_tokens(&self, wrapper_ident: &Ident) -> proc_macro2::TokenStream {
+        let wrapped_str = &wrapper_ident.to_string()[3..]; // removes starting 'Lua' from name
+        let mt_ident = &self.ident;
+        let mt_lua_name = mt_ident.to_string().to_lowercase();
+
+        if self.mods.is_empty() {
+            let other = quote! {
+                v.0
+            };
+            let body = Self::get_method_body(&self.ident, other);
+
+            if Self::does_metamethod_have_arg(&self.ident) {
+                quote! {
+                    builder.meta_method(elua::MetaMethod::#mt_ident, |_, this, (v,): (#wrapper_ident,)| {
+                        #body
+                    });
+                }
+            } else {
+                quote! {
+                    builder.meta_method(elua::MetaMethod::#mt_ident, |_, this, ()| {
+                        #body
+                    });
+                }
+            }
+            
+        } else if self.mods.len() == 1 {
+            let first = self.mods.iter().next().unwrap();
+            let body = Self::get_body_for_arg(&self.ident, first, quote!(v));
+
+            quote! {
+                builder.meta_method(elua::MetaMethod::#mt_ident, |_, this, (v,): (#first,)| {
+                    #body
+                });
+            }
+        } else {
+            // an optional match arm that matches elua::Value:Number
+            let number_arm = {
+                let num_ident = self.mods.iter().find(|i| {
+                    let is = i.to_string();
+                    let is = is.as_str();
+                    match is {
+                        "u8" | "u16" | "u32" | "u64" | "u128"
+                            | "i8" | "i16" | "i32" | "i64" | "i128"
+                            | "f32" | "f64" => true,
+                        _ => false,
+                    }
+                });
+
+                if let Some(num_ident) = num_ident {
+                    let body = Self::get_body_for_arg(&self.ident, num_ident, quote!(n as #num_ident));
+
+                    quote! {
+                        elua::Value::Number(n) => {
+                            #body
+                        },
+                    }
+                } else { quote!() }
+            };
+
+            let userdata_arm = {
+                let wrappers: Vec<&Ident> = self.mods.iter()
+                    .filter(|i| Self::is_arg_wrapper(i))
+                    .collect();
+
+                let if_statements = wrappers.iter().map(|i| {
+                    let body = Self::get_method_body(&self.ident, quote!(other.0));
+                    
+                    quote! {
+                        if let Ok(other) = ud.as_ref::<#i>() {
+                            #body
+                        }
+                    }
+                    
+                });
+
+                quote! {
+                    elua::Value::Userdata(ud) => {
+                        #(#if_statements else)*
+                        // this is the body of the else statement
+                        {
+                            // try to get the name of the userdata for the error message
+                            if let Ok(mt) = ud.get_metatable() {
+                                if let Ok(name) = mt.get::<_, String>("__name") {
+                                    return Err(elua::Error::BadArgument { 
+                                        func: Some(format!("{}.__{}", #wrapped_str, #mt_lua_name)),
+                                        arg_index: 2,
+                                        arg_name: Some("rhs".to_string()),
+                                        error: Arc::new(elua::Error::Runtime(
+                                            format!("cannot multiply with unknown userdata named {}", name)
+                                        ))
+                                    });
+                                }
+                            }
+    
+                            Err(elua::Error::BadArgument { 
+                                func: Some(format!("{}.__{}", #wrapped_str, #mt_lua_name)),
+                                arg_index: 2,
+                                arg_name: Some("rhs".to_string()),
+                                error: Arc::new(
+                                    elua::Error::runtime("cannot multiply with unknown userdata")
+                                )
+                            })
+                        }
+                    },
+                }
+            };
+            
+            quote! {
+                builder.meta_method(elua::MetaMethod::#mt_ident, |_, this, (v,): (elua::Value,)| {
+                    match v {
+                        #number_arm
+                        #userdata_arm
+                        _ => Err(elua::Error::BadArgument { 
+                            func: Some(format!("{}.__{}", #wrapped_str, #mt_lua_name)),
+                            arg_index: 2,
+                            arg_name: Some("rhs".to_string()),
+                            error: Arc::new(
+                                elua::Error::Runtime(format!("cannot multiply with {}", v.type_name()))
+                            )
+                        })
+                    }
+                });
+            }
+        }
+    }
+}
+
+pub(crate) struct VecWrapper {
+    
+}
+
+impl VecWrapper {
+    fn vec_size(&self, wrapper_ident: &Ident) -> usize {
+        let name = wrapper_ident.to_string();
+        name[name.len() - 1..].parse::<usize>()
+            .or_else(|_| name[name.len() - 2.. name.len() - 1].parse::<usize>())
+            .expect("Failure to grab Vec size from ident name")
+    }
+
+    /// Returns the token stream of the type of the axis of the vec (Vec2 vs IVec2 vs I64Vec2, etc.)
+    fn vec_axis_type(&self, wrapper_ident: &Ident) -> &'static str {
+        let name = wrapper_ident.to_string();
+        let start = name.find("Vec").unwrap();
+
+        let before = &name[start - 1.. start];
+        match before {
+            "D" => return "f64",
+            "I" => return "i32",
+            "U" => return "u32",
+            "B" => return "bool",
+            _ => {},
+        }
+        //println!("before is {before}");
+
+        let three_before = &name[start - 3.. start];
+        match three_before {
+            "I64" => return "i64",
+            "U64" => return "u64",
+            _ => {},
+        }
+        //println!("three before is {three_before}");
+
+        "f32"
+    }
+
+    pub fn to_field_tokens(&self, wrapped_path: &Path, wrapper_ident: &Ident) -> proc_macro2::TokenStream {
+        let mut consts = vec![quote!(ZERO), quote!(ONE), quote!(X),
+            quote!(Y), ]; // , quote!(AXES)
+
+        let vec_size = self.vec_size(wrapper_ident);
+        let axis_type_name = self.vec_axis_type(wrapper_ident);
+
+        if axis_type_name.contains("b") {
+            return quote! {
+                builder.field("FALSE", #wrapper_ident(#wrapped_path::FALSE));
+                builder.field("TRUE", #wrapper_ident(#wrapped_path::TRUE));
+            };
+        }
+        
+        if vec_size >= 3 {
+            consts.push(quote!(Z));
+
+            // no negative numbers for unsigned vecs
+            if !axis_type_name.contains("u") {
+                consts.push(quote!(NEG_Z));
+            }
+        }
+
+        if vec_size == 4 {
+            consts.push(quote!(W));
+
+            // no negative numbers for unsigned vecs
+            if !axis_type_name.contains("u") {
+                consts.push(quote!(NEG_W));
+            }
+        }
+
+        // no negative numbers for unsigned vecs
+        if !axis_type_name.contains("u") {
+            consts.push(quote!(NEG_X));
+            consts.push(quote!(NEG_Y));
+            consts.push(quote!(NEG_ONE));
+        }
+
+        if axis_type_name.contains("f") {
+            consts.push(quote!(NAN))
+        }
+
+        let const_tokens = consts.iter().map(|cnst| {
+            let const_name = cnst.to_string();
+
+            quote! {
+                builder.field(#const_name, #wrapper_ident(#wrapped_path::#cnst));
+            }
+        });
+
+        quote! {
+            #(#const_tokens)*
+        }
+    }
+
+    pub fn to_method_tokens(&self, wrapped_path: &Path, wrapper_ident: &Ident) -> proc_macro2::TokenStream {
+        let vec_size = self.vec_size(wrapper_ident);
+        let axis_type_name = self.vec_axis_type(wrapper_ident);
+        // methods that only some vecs have
+        let mut optional_methods = vec![];
+
+        // boolean vectors dont have much :(
+        if axis_type_name.contains("b") {
+            return quote!(); // TODO: all, any, bitmask, splat
+        }
+
+        if axis_type_name.contains("f") {
+            let type_id = Ident::new(axis_type_name, Span::call_site());
+
+            optional_methods.push(
+                quote! {
+                    builder.method("clamp_length",
+                            |_, this, (min, max): (#type_id, #type_id)| {
+                        Ok(#wrapper_ident(this.clamp_length(min, max)))
+                    });
+
+                    builder.method("abs_diff_eq",
+                            |_, this, (rhs, max_abs_diff): (#wrapper_ident, #type_id)| {
+                        Ok(this.abs_diff_eq(rhs.0, max_abs_diff))
+                    });
+
+                    builder.method("ceil",
+                            |_, this, (): ()| {
+                        Ok(#wrapper_ident(this.ceil()))
+                    });
+                }
+            );
+
+            if vec_size != 4 {
+                optional_methods.push(
+                    quote! {
+                        builder.method("angle_between",
+                                |_, this, (rhs,): (#wrapper_ident,)| {
+                            Ok(this.angle_between(rhs.0))
+                        });
+                    }
+                )
+            }
+        }
+
+        if !axis_type_name.contains("u") {
+            optional_methods.push(
+                quote! {
+                    builder.method("abs",
+                            |_, this, (): ()| {
+                        Ok(#wrapper_ident(this.abs()))
+                    });
+                }
+            )
+        }
+
+        let optional_methods_iter = optional_methods.iter();
+        quote! {
+            
+
+            builder.method("clamp",
+                    |_, this, (min, max): (#wrapper_ident, #wrapper_ident)| {
+                Ok(#wrapper_ident(this.clamp(min.0, max.0)))
+            });
+
+            // TODO: Not all Vecs have this
+            /* builder.method("clamp_length",
+                    |_, this, (min, max): (f32, f32)| {
+                Ok(#wrapper_ident(this.clamp_length(min, max)))
+            }); */
+
+
+            builder.method("to_array",
+                    |_, this, (): ()| {
+                Ok(this.to_array())
+            });
+
+            #(#optional_methods_iter)*
+        }
+    }
+}
+
+pub(crate) struct WrapUsage {
+    pub type_path: Path,
+    /// The extra derives of the type.
+    pub derive_idents: Punctuated<Ident, Token![,]>,
+    /// The field idents of the type that will be exposed with gets and sets
+    pub field_idents: Punctuated<Ident, Token![,]>,
+    pub skip_new_fn: bool,
+    /// The identifiers that are taken as parameters in the types 'new' function
+    pub new_fn_idents: Punctuated<Ident, Token![,]>,
+    pub meta_method_idents: Punctuated<MetaMethod, Token![,]>,
+    
+    pub matrix: Option<MatWrapper>,
+    pub vec: Option<VecWrapper>,
+
+    pub custom_methods: Option<syn::Block>,
+    pub custom_fields: Option<syn::Block>,
+}
+
+impl syn::parse::Parse for WrapUsage {
+    fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
+        let type_path: Path = input.parse()?;
+        let mut s = Self {
+            type_path,
+            derive_idents: Punctuated::default(),
+            field_idents: Punctuated::default(),
+            skip_new_fn: false,
+            new_fn_idents: Punctuated::default(),
+            meta_method_idents: Punctuated::default(),
+            matrix: None,
+            vec: None,
+            custom_methods: None,
+            custom_fields: None,
+        };
+        /* let mut derive_idents = None;
+        let mut field_idents = None;
+        let mut new_fn_idents = None; */
+        
+        while input.peek(Token![,]) {
+            let _: Token![,] = input.parse()?;
+            //println!("Peeked a , ({:?})", input);
+
+            if input.peek(syn::Ident) {
+                let ident: Ident = input.parse()?;
+                let ident_str = ident.to_string();
+                let ident_str = ident_str.as_str();
+
+                match ident_str {
+                    "derives" => {
+                        if input.peek(token::Paren) {
+                            let content;
+                            let _parens: token::Paren = parenthesized!(content in input);
+    
+                            let derives: Punctuated<Ident, Token![,]> = content.parse_terminated(Ident::parse, Token![,])?;
+                            s.derive_idents = derives;
+                            //println!("read derives: {:?}", s.derive_idents);
+                        }
+                    },
+                    "fields" => {
+                        if input.peek(token::Paren) {
+                            let content;
+                            let _parens: token::Paren = parenthesized!(content in input);
+    
+                            let fields: Punctuated<Ident, Token![,]> = content.parse_terminated(Ident::parse, Token![,])?;
+                            s.field_idents = fields;
+                            //println!("read fields: {:?}", s.field_idents);
+                        }
+                    },
+                    "new" => {
+                        if input.peek(token::Paren) {
+                            let content;
+                            let _parens: token::Paren = parenthesized!(content in input);
+    
+                            let fields: Punctuated<Ident, Token![,]> = content.parse_terminated(Ident::parse, Token![,])?;
+                            s.new_fn_idents = fields;
+                            //println!("read fields: {:?}", s.new_fn_idents);
+                        }
+                    },
+                    "no_new" => {
+                        s.skip_new_fn = true;
+                    },
+                    "matrix" => {
+                        if input.peek(token::Brace) {
+                            let content;
+                            let _braces = braced!(content in input);
+                            s.matrix = Some(content.parse()?);
+                        }
+                    },
+                    "metamethods" => {
+                        if input.peek(token::Paren) {
+                            let content;
+                            let _bracket: token::Paren = parenthesized!(content in input);
+    
+                            let meta_methods: Punctuated<MetaMethod, Token![,]> = content.parse_terminated(MetaMethod::parse, Token![,])?;
+                            s.meta_method_idents = meta_methods;
+                        }
+                    },
+                    "custom_methods" => {
+                        let methods_block = input.parse()?;
+                        s.custom_methods = Some(methods_block);
+                    },
+                    "custom_fields" => {
+                        let block = input.parse()?;
+                        s.custom_fields = Some(block);
+                    }
+                    _ => {
+                        return Err(syn::Error::new_spanned(ident, "unknown wrapper command"));
+                    }
+                }
+            }
+        }
+
+        Ok(s)
+    }
+}
+
+/// Creates a wrapper type for a VecN from the engine math library.
+#[proc_macro]
+pub fn wrap_math_vec_copy(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    let input = parse_macro_input!(input as WrapUsage);
+
+    let path: Path = input.type_path;
+    let type_name = &path.segments.last()
+        .expect("Failure to find typename in macro usage!")
+        .ident;
+    let wrapper_typename = Ident::new(&format!("Lua{}", type_name), Span::call_site());
+
+    let vec_wrapper = {
+        let name_str = type_name.to_string();
+        if name_str.contains("Vec") {
+            Some(VecWrapper {})
+        } else {
+            None
+        }
+    };
+    // TODO: fix this so it doesn't cause a stack overflow
+    /* let vec_wrapper_fields = vec_wrapper.as_ref().map(|vec|
+        vec.to_field_tokens(&path, &wrapper_typename)); */
+    let vec_wrapper_fields: Option<proc_macro2::TokenStream> = None;
+    let vec_wrapper_methods = vec_wrapper.as_ref().map(|vec|
+        vec.to_method_tokens(&path, &wrapper_typename));
+
+    let derive_idents_iter = input.derive_idents.iter();
+    let custom_methods = input.custom_methods;
+    let custom_fields = input.custom_fields;
+
+    let field_get_set_pairs = input.field_idents.iter().map(|i| {
+        let is = i.to_string();
+        quote! {
+            builder.field_getter(#is, |_, this| {
+                Ok(this.#i)
+            });
+            builder.field_setter(#is, |_, this, #i| {
+                this.#i = #i;
+                Ok(())
+            });
+        }
+    });
+    
+    let new_fn_idents = {
+        let idents = if input.new_fn_idents.is_empty() {
+            input.field_idents.iter()
+        } else {
+            input.new_fn_idents.iter()
+        };
+
+        let idents_c = idents.clone();
+
+        if !input.skip_new_fn {
+            quote! {
+                builder.function("new", |_, ( #(#idents_c),* )| {
+                    Ok(#wrapper_typename(#path::new( #(#idents),* )))
+                });
+            }
+        } else { quote!() }
+    };
+
+    let matrix_wrapper_methods = input.matrix.as_ref().map(|m| 
+        m.to_method_tokens(&path, &wrapper_typename));
+    let matrix_wrapper_fields = input.matrix.as_ref().map(|m| 
+        m.to_field_tokens(&path, &wrapper_typename));
+
+    let meta_method_idents = {
+        let idents = input.meta_method_idents.iter().map(|metamethod| {
+            metamethod.to_tokens(&wrapper_typename)
+        });
+
+        quote! {
+            #(#idents)*
+        }
+    };
+
+    proc_macro::TokenStream::from(quote! {
+        #[derive(Clone, Copy, lyra_reflect::Reflect, #(#derive_idents_iter),*)]
+        pub struct #wrapper_typename(#[reflect(skip)] pub(crate) #path);
+
+        impl std::ops::Deref for #wrapper_typename {
+            type Target = #path;
+        
+            fn deref(&self) -> &Self::Target {
+                &self.0
+            }
+        }
+        
+        impl std::ops::DerefMut for #wrapper_typename {
+            fn deref_mut(&mut self) -> &mut Self::Target {
+                &mut self.0
+            }
+        }
+
+        impl<'lua> elua::FromLua<'lua> for #wrapper_typename {
+            fn from_lua(_lua: &'lua elua::State, value: elua::Value<'lua>) -> elua::Result<Self> {
+                match value {
+                    elua::Value::Userdata(ud) => Ok(*ud.as_ref::<Self>()?),
+                    _ => panic!("Attempt to get {} from a {} value", stringify!(#wrapper_typename), value.type_name()),
+                }
+            }
+        }
+
+        impl elua::Userdata for #wrapper_typename {
+            fn name() -> String {
+                stringify!(#type_name).to_string()
+            }
+
+            fn build<'a>(builder: &mut elua::UserdataBuilder<'a, Self>) {
+                #(#field_get_set_pairs)*
+
+                #matrix_wrapper_fields
+                #vec_wrapper_fields
+
+                #custom_fields
+                
+                #new_fn_idents
+
+                builder.method(#FN_NAME_INTERNAL_REFLECT, |_, this, ()| {
+                    Ok(crate::ScriptBorrow::from_component::<#path>(Some(this.0.clone())))
+                });
+        
+                builder.function(#FN_NAME_INTERNAL_REFLECT_TYPE, |_, ()| {
+                    Ok(crate::ScriptBorrow::from_component::<#path>(None))
+                });
+
+                #meta_method_idents
+                
+                #matrix_wrapper_methods
+                #vec_wrapper_methods
+                
+                #custom_methods
+            }
+        }
+
+        impl lyra_scripting::lua::LuaWrapper for #wrapper_typename {
+            fn wrapped_type_id() -> std::any::TypeId {
+                let t = std::any::TypeId::of::<#path>();
+                println!("Got id of {}, it is {:?}", stringify!(#path), t);
+                t
+            }
+        }
+
+        impl<'a> elua::FromLuaVec<'a> for #wrapper_typename {
+            fn from_lua_value_vec(state: &'a elua::State, mut values: elua::ValueVec<'a>) -> elua::Result<Self> {
+                use elua::FromLua;
+                
+                if let Some(val) = values.pop_front() {
+                    #wrapper_typename::from_lua(state, val)
+                } else {
+                    Err(elua::Error::IncorrectArgCount {
+                        arg_expected: 1,
+                        arg_count: values.len() as i32,
+                    })
+                }
+            }
+        }
+    })
+}

lyra-scripting/lyra-scripting-derive/src/mat_wrapper.rs

@@ -0,0 +1,142 @@
+use proc_macro2::Ident;
+use quote::quote;
+use syn::{Path, Token};
+
+pub(crate) struct MatWrapper {
+    pub column_type: Ident,
+}
+
+impl MatWrapper {
+    pub fn to_field_tokens(&self, wrapped_path: &Path, wrapper_ident: &Ident) -> proc_macro2::TokenStream {
+        quote! {
+            builder.field("ZERO", #wrapper_ident(#wrapped_path::ZERO));
+            builder.field("IDENTITY", #wrapper_ident(#wrapped_path::IDENTITY));
+            builder.field("NAN", #wrapper_ident(#wrapped_path::NAN));
+        }
+    }
+
+    pub fn to_method_tokens(&self, wrapped_path: &Path, wrapper_ident: &Ident) -> proc_macro2::TokenStream {
+        let column_type = &self.column_type;
+
+        let column_size = {
+            let ty_str = column_type.to_string();
+            ty_str[ty_str.len() - 1..].parse::<usize>()
+                .expect("Failure to parse number from token type")
+        };
+        let column_size_xtwo = column_size * 2;
+
+        let element_ty = quote!(f32);
+
+        quote! {
+            builder.function("from_cols", 
+                    |_, (x_axis, y_axis): (#column_type, #column_type)| {
+                Ok(#wrapper_ident(#wrapped_path::from_cols(x_axis.0, y_axis.0)))
+            });
+
+            builder.function("from_cols_array",
+                    |_, (arr,): ([#element_ty; #column_size_xtwo],)| {
+                Ok(#wrapper_ident(#wrapped_path::from_cols_array(&arr)))
+            });
+
+            builder.function("from_cols_array_2d",
+                    |_, (arr,): ([[#element_ty; #column_size]; #column_size],)| {
+                Ok(#wrapper_ident(#wrapped_path::from_cols_array_2d(&arr)))
+            });
+
+            builder.function("from_diagonal", 
+                    |_, (diag,): (#column_type,)| {
+                Ok(#wrapper_ident(#wrapped_path::from_diagonal(diag.0)))
+            });
+
+            builder.method("col",
+                    |_, this, (idx,): (usize,)| {
+                Ok(#column_type(this.col(idx)))
+            });
+
+            builder.method("row",
+                    |_, this, (idx,): (usize,)| {
+                Ok(#column_type(this.row(idx)))
+            });
+
+            builder.method_mut("set_col",
+                    |_, this, (idx, newc): (usize, #column_type)| {
+                let col = this.col_mut(idx);
+                *col = newc.0;
+
+                Ok(())
+            });
+
+            builder.method("is_finite",
+                    |_, this, (): ()| {
+                Ok(this.is_finite())
+            });
+
+            builder.method("is_nan",
+                    |_, this, (): ()| {
+                Ok(this.is_nan())
+            });
+
+            builder.method("transpose",
+                    |_, this, (): ()| {
+                Ok(#wrapper_ident(this.0.transpose()))
+            });
+
+            builder.method("determinant",
+                    |_, this, (): ()| {
+                Ok(this.determinant())
+            });
+
+            builder.method("inverse",
+                    |_, this, (): ()| {
+                Ok(#wrapper_ident(this.inverse()))
+            });
+
+            builder.method("abs_diff_eq",
+                    |_, this, (rhs, max_abs_diff): (#wrapper_ident, f32)| {
+                Ok(this.abs_diff_eq(rhs.0, max_abs_diff))
+            });
+
+            // TODO: After all DMat's are implemented
+            /* builder.method("as_dmat",
+                    |_, this, (rhs, max_abs_diff): (#wrapper_ident, f32)| {
+                Ok(D#wrapper_ident(this.as_dmat))
+            }); */
+        }
+    }
+}
+
+impl syn::parse::Parse for MatWrapper {
+    fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
+        let mut column_type = None;
+
+        // cba to remove the use of this bool
+        let mut first = true;
+
+        while input.peek(Token![,]) || first {
+            if !first {
+                let _: Token![,] = input.parse()?;
+            }
+
+            if input.peek(syn::Ident) {
+                let ident: Ident = input.parse()?;
+                let ident_str = ident.to_string();
+                let ident_str = ident_str.as_str();
+
+                match ident_str {
+                    "col_type" => {
+                        let _eq: Token![=] = input.parse()?;
+                        column_type = Some(input.parse()?);
+                    },
+                    _ => return Err(syn::Error::new_spanned(ident, "unknown matrix wrapper command")),
+                }
+            }
+
+            first = false;
+        }
+
+        Ok(Self {
+            column_type: column_type.ok_or_else(|| syn::Error::new(input.span(),
+                "expected `col_type`"))?,
+        })
+    }
+}

lyra-scripting/scripts/lua/math/quat.lua

@@ -0,0 +1,182 @@
+---@class Quat
+---@field x number
+---@field y number
+---@field z number
+---@field w number
+Quat = { x = 0.0, y = 0.0, z = 0.0, w = 0.0 }
+Quat.__index = Quat
+Quat.__name = "Quat"
+
+--- Constructs a new Quaternion from x, y, z, and w.
+---@param x number
+---@param y number
+---@param z number
+---@param w number
+---@return Quat
+function Quat:new(x, y, z, w)
+    local q = {}
+    setmetatable(q, Quat)
+    
+    q.x = x
+    q.y = y
+    q.z = z
+    q.w = w
+    
+    return q
+end
+
+Quat.IDENTITY = Quat:new(0, 0, 0, 1)
+
+function Quat:clone()
+    return Quat:new(self.x, self.y, self.z, self.w)
+end
+
+--- Creates a quaternion from the angle, in radians, around the x axis.
+--- @param rad number
+--- @return Quat
+function Quat:from_rotation_x(rad)
+    local sin = math.sin(rad * 0.5)
+    local cos = math.cos(rad * 0.5)
+    return Quat:new(sin, 0, 0, cos)
+end
+
+--- Creates a quaternion from the angle, in radians, around the y axis.
+--- @param rad number
+--- @return Quat
+function Quat:from_rotation_y(rad)
+    local sin = math.sin(rad * 0.5)
+    local cos = math.cos(rad * 0.5)
+    return Quat:new(0, sin, 0, cos)
+end
+
+--- Creates a quaternion from the angle, in radians, around the z axis.
+--- @param rad number
+--- @return Quat
+function Quat:from_rotation_z(rad)
+    local sin = math.sin(rad * 0.5)
+    local cos = math.cos(rad * 0.5)
+    return Quat:new(0, 0, sin, cos)
+end
+
+--- Computes the dot product of `self`.
+---@param rhs Quat
+---@return number
+function Quat:dot(rhs)
+    return (self.x * rhs.x) + (self.y * rhs.y) + (self.z * rhs.z) + (self.w * rhs.w)
+end
+
+--- Computes the length of `self`.
+---@return number
+function Quat:length()
+    return math.sqrt(self:dot(self))
+end
+
+--- Compute the length of `self` squared.
+---@return number
+function Quat:length_squared()
+    return self:length() ^ 2
+end
+
+--- Normalizes `self` and returns the new Quat
+---@return unknown
+function Quat:normalize()
+    local length = self:length()
+    return self / length
+end
+
+--- Multiplies two Quaternions together. Keep in mind that Quaternion multiplication is NOT
+--- commutative so the order in which you multiply the quaternions matters.
+---@param rhs Quat
+---@return Quat
+function Quat:mult_quat(rhs)
+    local x1, y1, z1, w1 = self.x, self.y, self.z, self.w
+    local x2, y2, z2, w2 = rhs.x, rhs.y, rhs.z, rhs.w
+
+    local x = w1 * x2 + x1 * w2 + y1 * z2 - z1 * y2
+    local y = w1 * y2 - x1 * z2 + y1 * w2 + z1 * x2
+    local z = w1 * z2 + x1 * y2 - y1 * x2 + z1 * w2
+    local w = w1 * w2 - x1 * x2 - y1 * y2 - z1 * x2
+    
+    return Quat:new(x, y, z, w)
+end
+
+--- Multiplies `self` by a Vec3, returning the rotated Vec3
+---@param vec Vec3
+---@return Vec3
+function Quat:mult_vec3(vec)
+    local vec_quat = Quat:new(vec.x, vec.y, vec.z, 0)
+    local quat = self:mult_quat(vec_quat)
+    return Vec3:new(quat.x, quat.y, quat.z)
+end
+
+--- Calculates the linear iterpolation between `self` and `rhs` based on the `alpha`.
+--- When `alpha` is `0`, the result will be equal to `self`. When `s` is `1`, the result
+--- will be equal to `rhs`
+--- @param rhs Quat
+--- @param alpha number
+--- @return Quat
+function Quat:lerp(rhs, alpha)
+    -- ensure alpha is [0, 1]
+    local alpha = math.max(0, math.min(1, alpha))
+
+    local x1, y1, z1, w1 = self.x, self.y, self.z, self.w
+    local x2, y2, z2, w2 = rhs.x, rhs.y, rhs.z, rhs.w
+
+    local x = (1 - alpha) * x1 + alpha * x2
+    local y = (1 - alpha) * y1 + alpha * y2
+    local z = (1 - alpha) * z1 + alpha * z2
+    local w = (1 - alpha) * w1 + alpha * w2
+
+    return Quat:new(x, y, z, w):normalize()
+end
+
+function Quat:__add(rhs)
+    return Quat:new(self.x + rhs.x, self.y + rhs.y, self.z + rhs.z, self.w + rhs.w)
+end
+
+function Quat:__sub(rhs)
+    return Quat:new(self.x - rhs.x, self.y - rhs.y, self.z - rhs.z, self.w - rhs.w)
+end
+
+function Quat:__mul(rhs)
+    if type(rhs) == "number" then
+        return Quat:new(self.x * rhs, self.y * rhs, self.z * rhs, self.w * rhs)
+    elseif type(rhs) == "table" then
+        local name = rhs.__name
+
+        if name == "Vec3" then
+            return self:mult_vec3(rhs)
+        elseif name == "Quat" then
+            return self:mult_quat(rhs)
+        else
+            assert(false, "Unknown usertype of rhs" .. name)
+        end
+    else
+        assert(false, "Unknown type of rhs" .. type(rhs))
+    end
+end
+
+function Quat:__div(rhs)
+    if type(rhs) == "number" then
+        return Quat:new(self.x / rhs, self.y / rhs, self.z / rhs, self.w / rhs)
+    else
+        assert(rhs.__name == "Quat", "Attempted to divide Quat by unknown type " .. rhs.__name)
+        return Quat:new(self.x / rhs.x, self.y / rhs.y, self.z / rhs.z, self.w / rhs.w)
+    end
+end
+
+function Quat:__eq(rhs)
+    return self.x == rhs.x and self.y == rhs.y and self.z == rhs.z and self.w == rhs.w
+end
+
+function Quat:__lt(rhs)
+    return self.x < rhs.x and self.y < rhs.y and self.z < rhs.z and self.w < rhs.w
+end
+
+function Quat:__le(rhs)
+    return self.x <= rhs.x and self.y <= rhs.y and self.z <= rhs.z and self.w <= rhs.w
+end
+
+function Quat:__tostring()
+    return "Quat(" .. self.x .. ", " .. self.y .. ", " .. self.z .. ", " .. self.w .. ")"
+end

lyra-scripting/scripts/lua/math/transform.lua

@@ -0,0 +1,95 @@
+---@class Transform
+---@field translation Vec3
+---@field rotation Quat
+---@field Scale Vec3
+Transform = { translation = Vec3.ZERO, rotation = Quat.IDENTITY, scale = Vec3.ONE }
+Transform.__index = Transform
+Transform.__name = "Transform"
+
+function Transform:new(translation, rotation, scale)
+    local t = {}
+    setmetatable(t, Transform)
+    
+    t.translation = translation
+    t.rotation = rotation
+    t.scale = scale
+    
+    return t
+end
+
+function Transform:clone()
+    return Transform:new(self.translation:clone(), self.rotation:clone(), self.scale:clone())
+end
+
+--- Creates a new Transform with the translation at the vec3
+--- @param pos Vec3
+function Transform:from_vec3(pos)
+    local t = Transform:clone() -- copy of default transform
+    t.translation = pos
+    return t
+end
+
+function Transform:from_xyz(x, y, z)
+    Transform:from_vec3(Vec3:new(x, y, z))
+end
+
+--- Calculates the forward vector of the Transform.
+--- @return Vec3
+function Transform:forward()
+    return (self.rotation * Vec3.NEG_Z):normalize()
+end
+
+--- Calculates the left vector of the Transform.
+--- @return Vec3
+function Transform:left()
+    return (self.rotation * Vec3.X):normalize()
+end
+
+--- Calculates the up vector of the Transform.
+--- @return Vec3
+function Transform:up()
+    return (self.rotation * Vec3.Y):normalize()
+end
+
+--- Rotates `self` using a Quaternion
+--- @param quat Quat
+function Transform:rotate(quat)
+    self.rotation = (quat * self.rotation):normalize()
+end
+
+--- Rotates `self` around the x-axis
+--- @param rad number
+function Transform:rotate_x(rad)
+    self:rotate(Quat:from_rotation_x(rad))
+end
+
+--- Rotates `self` around the y-axis
+--- @param rad number
+function Transform:rotate_y(rad)
+    self:rotate(Quat:from_rotation_y(rad))
+end
+
+--- Rotates `self` around the z-axis
+--- @param rad number
+function Transform:rotate_z(rad)
+    self:rotate(Quat:from_rotation_z(rad))
+end
+
+--- Calculates the linear iterpolation between `self` and `rhs` based on the `alpha`.
+--- When `alpha` is `0`, the result will be equal to `self`. When `s` is `1`, the result
+--- will be equal to `rhs`
+--- @param rhs Transform
+--- @param alpha number
+--- @return Transform
+function Transform:lerp(rhs, alpha)
+    local res = self:clone()
+    res.translation = self.translation:lerp(rhs.translation, alpha)
+    res.rotation = self.rotation:lerp(rhs.rotation, alpha)
+    res.scale = self.scale:lerp(rhs.scale, alpha)
+    return res
+end
+
+function Transform:__tostring()
+    return "Transform(pos=" .. tostring(self.translation) .. ", rot="
+        .. tostring(self.rotation) .. ", scale=" .. tostring(self.scale) .. ")"
+end

lyra-scripting/scripts/lua/math/vec3.lua

@@ -0,0 +1,187 @@
+---@class Vec3
+---@field x number
+---@field y number
+---@field z number
+Vec3 = { x = 0.0, y = 0.0, z = 0.0 }
+Vec3.__index = Vec3
+Vec3.__name = "Vec3"
+
+--- Constructs a new vector
+---@param x number
+---@param y number
+---@param z number
+---@return Vec3
+function Vec3:new(x, y, z)
+    local v = {}
+    setmetatable(v, Vec3)
+    
+    v.x = x
+    v.y = y
+    v.z = z
+
+    return v
+end
+
+---Creates a copy of self
+---@return Vec3
+function Vec3:clone()
+    return Vec3:new(self.x, self.y, self.z)
+end
+
+--- Constructs a vector with all elements as parameter `x`.
+---@param x number
+---@return Vec3
+function Vec3:all(x)
+    return Vec3:new(x, x, x)
+end
+
+--- A unit-length vector pointing alongside the positive X axis.
+Vec3.X = Vec3:new(1, 0, 0)
+--- A unit-length vector pointing alongside the positive Y axis.
+Vec3.Y = Vec3:new(0, 1, 0)
+--- A unit-length vector pointing alongside the positive Z axis.
+Vec3.Z = Vec3:new(0, 0, 1)
+
+--- A unit-length vector pointing alongside the negative X axis.
+Vec3.NEG_X = Vec3:new(-1, 0, 0)
+--- A unit-length vector pointing alongside the negative Y axis.
+Vec3.NEG_Y = Vec3:new(0, -1, 0)
+--- A unit-length vector pointing alongside the negative Z axis.
+Vec3.NEG_Z = Vec3:new(0, 0, -1)
+
+--- A vector of all zeros
+Vec3.ZERO = Vec3:new(0, 0, 0)
+--- A vector of all ones
+Vec3.ONE = Vec3:new(1, 1, 1)
+
+--- Computes the absolute value of `self`.
+function Vec3:abs()
+    self.x = math.abs(self.x)
+    self.y = math.abs(self.y)
+    self.z = math.abs(self.z)
+end
+
+--- Computes the length of `self`.
+---@return number
+function Vec3:length()
+    return math.sqrt(self:dot(self))
+end
+
+---Moves `self` by the provided coordinates
+---@param x number
+---@param y number
+---@param z number
+function Vec3:move_by(x, y, z)
+    self.x = self.x + x
+    self.y = self.y + y
+    self.z = self.z + z
+end
+
+--- Computes the dot product of `self` and `rhs`.
+---@param rhs Vec3
+---@return number
+function Vec3:dot(rhs)
+    assert(rhs.__name == "Vec3")
+
+    return (self.x * rhs.x) + (self.y * rhs.y) + (self.z * rhs.z)
+end
+
+--- Returns a vector that has the minimum value of each element of `self` and `rhs`
+---@param rhs Vec3
+---@return Vec3
+function Vec3:min(rhs)
+    local x = math.min(self.x, rhs.x)
+    local y = math.min(self.y, rhs.y)
+    local z = math.min(self.z, rhs.z)
+
+    return Vec3:new(x, y, z)
+end
+
+--- Modifies `self` to be normalized to a length 1.
+function Vec3:normalize()
+    local len_recip = 1.0 / self:length()
+    self.x = self.x * len_recip
+    self.y = self.y * len_recip
+    self.z = self.z * len_recip
+end
+
+--- Calculates the linear iterpolation between `self` and `rhs` based on the `alpha`.
+--- When `alpha` is `0`, the result will be equal to `self`. When `s` is `1`, the result
+--- will be equal to `rhs`
+--- @param rhs Vec3
+--- @param alpha number
+--- @return Vec3
+function Vec3:lerp(rhs, alpha)
+    -- ensure alpha is [0, 1]
+    local alpha = math.max(0, math.min(1, alpha))
+
+    local res = self:clone()
+    res = res + ((rhs - res) * alpha)
+    return res
+end
+
+function Vec3:__add(rhs)
+    if type(rhs) == "Vec3" then
+        return Vec3:new(self.x + rhs.x, self.y + rhs.y, self.z + rhs.z)
+    else
+        return Vec3:new(self.x + rhs, self.y + rhs, self.z + rhs)
+    end
+end
+
+function Vec3:__sub(rhs)
+    if type(rhs) == "Vec3" then
+        return Vec3:new(self.x - rhs.x, self.y - rhs.y, self.z - rhs.z)
+    else
+        return Vec3:new(self.x - rhs, self.y - rhs, self.z - rhs)
+    end
+end
+
+function Vec3:__mul(rhs)
+    if type(rhs) == "Vec3" then
+        return Vec3:new(self.x * rhs.x, self.y * rhs.y, self.z * rhs.z)
+    else
+        return Vec3:new(self.x * rhs, self.y * rhs, self.z * rhs)
+    end
+end
+
+function Vec3:__div(rhs)
+    if type(rhs) == "Vec3" then
+        return Vec3:new(self.x / rhs.x, self.y / rhs.y, self.z / rhs.z)
+    else
+        return Vec3:new(self.x / rhs, self.y / rhs, self.z / rhs)
+    end
+end
+
+function Vec3:__idiv(rhs)
+    if type(rhs) == "Vec3" then
+        return Vec3:new(self.x // rhs.x, self.y // rhs.y, self.z // rhs.z)
+    else
+        return Vec3:new(self.x // rhs, self.y // rhs, self.z // rhs)
+    end
+end
+
+function Vec3:__unm()
+    return Vec3:new(-self.x, -self.y, -self.z)
+end
+
+function Vec3:__pow(rhs)
+    if type(rhs) == "number" then
+        return Vec3:new(self.x ^ rhs, self.y ^ rhs, self.z ^ rhs)
+    end
+end
+
+function Vec3:__eq(rhs)
+    return self.x == rhs.x and self.y == rhs.y and self.z == rhs.z
+end
+
+function Vec3:__lt(rhs)
+    return self.x < rhs.x and self.y < rhs.y and self.z < rhs.z
+end
+
+function Vec3:__le(rhs)
+    return self.x <= rhs.x and self.y <= rhs.y and self.z <= rhs.z
+end
+
+function Vec3:__tostring()
+    return "Vec3(" .. self.x .. ", " .. self.y .. ", " .. self.z .. ")"
+end

lyra-scripting/src/host.rs

@@ -1,6 +1,6 @@
 use std::collections::HashMap;
 
-use lyra_ecs::ResourceObject;
+use lyra_ecs::{ResourceObject, Entity, World};
 
 use crate::ScriptWorldPtr;
 
@@ -8,15 +8,15 @@ use crate::ScriptWorldPtr;
 pub enum ScriptError {
     #[error("{0}")]
     #[cfg(feature = "lua")]
-    MluaError(mlua::Error),
+    MluaError(elua::Error),
 
     #[error("{0}")]
     Other(anyhow::Error),
 }
 
 #[cfg(feature = "lua")]
-impl From<mlua::Error> for ScriptError {
-    fn from(value: mlua::Error) -> Self {
+impl From<elua::Error> for ScriptError {
+    fn from(value: elua::Error) -> Self {
         ScriptError::MluaError(value)
     }
 }
@@ -29,8 +29,12 @@ impl From<anyhow::Error> for ScriptError {
 
 #[derive(Clone, Hash, PartialEq, Eq)]
 pub struct ScriptData {
+    /// The script id
     pub script_id: u64,
+    /// The name of the script
     pub name: String,
+    /// The entity that this script exists on
+    pub entity: Entity,
 }
 
 /// Provides an API to a scripting context.
@@ -38,12 +42,15 @@ pub trait ScriptApiProvider {
     /// The type used as the script's context.
     type ScriptContext;
 
-    /// Exposes an API in the provided script context.
-    fn expose_api(&mut self, ctx: &mut Self::ScriptContext) -> Result<(), ScriptError>;
+    /// Prepare the ECS world for this api. Things like registering types with the type registry happen here.
+    fn prepare_world(&mut self, world: &mut World) {
+        let _ = world; // remove compiler warning
+    }
 
-    /// Create a script in the script host.
-    /// 
-    /// This only creates the script for the host, it does not setup the script for execution. See [`ScriptHostProvider::setup_script`].
+    /// Exposes an API in the provided script context.
+    fn expose_api(&mut self, data: &ScriptData, ctx: &mut Self::ScriptContext) -> Result<(), ScriptError>;
+
+    /// Setup a script right before its 'init' method is called.
     fn setup_script(&mut self, data: &ScriptData, ctx: &mut Self::ScriptContext) -> Result<(), ScriptError>;
 
     /// A function that is used to update a script's environment.
@@ -74,13 +81,18 @@ pub trait ScriptHost: Default + ResourceObject {
     /// Loads a script and creates a context for it.
     /// 
     /// Before the script is executed, the API providers are exposed to the script.
-    fn load_script(&mut self, script: &[u8], script_data: &ScriptData, providers: &mut crate::ScriptApiProviders<Self>) -> Result<Self::ScriptContext, ScriptError>;
+    fn load_script(&mut self, script: &[u8], script_data: &ScriptData,
+        providers: &mut crate::ScriptApiProviders<Self>)
+        -> Result<Self::ScriptContext, ScriptError>;
 
     /// Setup a script for execution.
-    fn setup_script(&mut self, script_data: &ScriptData, ctx: &mut Self::ScriptContext, providers: &mut ScriptApiProviders<Self>) -> Result<(), ScriptError>;
+    fn setup_script(&mut self, script_data: &ScriptData, ctx: &mut Self::ScriptContext,
+        providers: &mut ScriptApiProviders<Self>) -> Result<(), ScriptError>;
 
-    /// Executes the update step for the script.
-    fn update_script(&mut self, world: ScriptWorldPtr, script_data: &crate::ScriptData, ctx: &mut Self::ScriptContext, providers: &mut crate::ScriptApiProviders<Self>) -> Result<(), ScriptError>;
+    /// Calls a event function in the script.
+    fn call_script(&mut self, world: ScriptWorldPtr, script_data: &crate::ScriptData,
+        ctx: &mut Self::ScriptContext, providers: &mut crate::ScriptApiProviders<Self>,
+        event_fn_name: &str) -> Result<(), ScriptError>;
 }
 
 #[derive(Default)]
@@ -110,4 +122,12 @@ impl<T> ScriptContexts<T> {
     pub fn has_context(&self, script_id: u64) -> bool {
         self.contexts.contains_key(&script_id)
     }
+
+    pub fn remove_context(&mut self, script_id: u64) -> Option<T> {
+        self.contexts.remove(&script_id)
+    }
+
+    pub fn len(&self) -> usize {
+        self.contexts.len()
+    }
 }

lyra-scripting/src/lib.rs

@@ -2,6 +2,9 @@
 pub mod lua;
 
 pub mod world;
+use std::any::TypeId;
+
+use lyra_ecs::{Component, ResourceObject};
 pub use world::*;
 
 pub mod wrap;
@@ -15,16 +18,19 @@ pub use script::*;
 
 use lyra_game::game::Game;
 
+// required for some proc macros :(
 #[allow(unused_imports)]
 pub(crate) mod lyra_engine {
     pub use lyra_ecs as ecs;
+    pub use lyra_reflect as reflect;
 }
 
-use lyra_reflect::{ReflectedComponent, Reflect};
+use lyra_reflect::{ReflectedComponent, Reflect, FromType, ReflectedResource};
 
 #[derive(Clone)]
 pub enum ReflectBranch {
     Component(ReflectedComponent),
+    Resource(ReflectedResource),
 }
 
 impl ReflectBranch {
@@ -35,18 +41,51 @@ impl ReflectBranch {
     pub fn as_component_unchecked(&self) -> &ReflectedComponent {
         match self {
             ReflectBranch::Component(c) => c,
-            //_ => panic!("`self` is not an instance of `ReflectBranch::Component`")
+            _ => panic!("`self` is not an instance of `ReflectBranch::Component`")
         }
     }
 
+    /// Returns a boolean indicating if `self` is a reflection of a Component.
     pub fn is_component(&self) -> bool {
         matches!(self, ReflectBranch::Component(_))
     }
+
+    /// Gets self as a [`ReflectedResource`]. 
+    /// 
+    /// # Panics
+    /// If `self` is not a variant of [`ReflectBranch::Resource`].
+    pub fn as_resource_unchecked(&self) -> &ReflectedResource {
+        match self {
+            ReflectBranch::Resource(v) => v,
+            _ => panic!("`self` is not an instance of `ReflectBranch::Component`")
+        }
+    }
+
+    /// Gets self as a [`ReflectedResource`], returning `None` if self is not an instance of it.
+    pub fn as_resource(&self) -> Option<&ReflectedResource> {
+        match self {
+            ReflectBranch::Resource(v) => Some(v),
+            _ => None
+        }
+    }
+
+    /// Returns a boolean indicating if `self` is a reflection of a Resource.
+    pub fn is_resource(&self) -> bool {
+        matches!(self, ReflectBranch::Resource(_))
+    }
+
+    /// Returns the type id of the reflected thing
+    pub fn reflect_type_id(&self) -> TypeId {
+        match self {
+            ReflectBranch::Component(c) => c.type_id,
+            ReflectBranch::Resource(r) => r.type_id,
+        }
+    }
 }
 
 pub struct ScriptBorrow {
-    reflect_branch: ReflectBranch,
-    data: Option<Box<dyn Reflect>>,
+    pub(crate) reflect_branch: ReflectBranch,
+    pub(crate) data: Option<Box<dyn Reflect>>,
 }
 
 impl Clone for ScriptBorrow {
@@ -60,8 +99,37 @@ impl Clone for ScriptBorrow {
     }
 }
 
+impl ScriptBorrow {
+    /// Creates a ScriptBorrow from a Component
+    pub fn from_component<T>(data: Option<T>) -> Self
+    where
+        T: Reflect + Component + 'static
+    {
+        let data = data.map(|d| Box::new(d) as Box<(dyn Reflect + 'static)>);
+
+        Self {
+            reflect_branch: ReflectBranch::Component(<ReflectedComponent as FromType<T>>::from_type()),
+            data,
+        }
+    }
+
+    /// Creates a ScriptBorrow from a Resource.
+    pub fn from_resource<T>(data: Option<T>) -> Self
+    where
+        T: Reflect + ResourceObject + 'static
+    {
+        let data = data.map(|d| Box::new(d) as Box<(dyn Reflect + 'static)>);
+
+        Self {
+            reflect_branch: ReflectBranch::Resource(<ReflectedResource as FromType<T>>::from_type()),
+            data,
+        }
+    }
+}
+
 /// An extension trait that adds some helpful methods that makes it easier to do scripting things
 pub trait GameScriptExt {
+    /// A helper method for adding a ScriptApiProvider into the world.
     fn add_script_api_provider<T, P>(&mut self, provider: P)
     where
         T: ScriptHost,
@@ -69,12 +137,13 @@ pub trait GameScriptExt {
 }
 
 impl GameScriptExt for Game {
-    fn add_script_api_provider<T, P>(&mut self, provider: P)
+    fn add_script_api_provider<T, P>(&mut self, mut provider: P)
     where
         T: ScriptHost,
         P: ScriptApiProvider<ScriptContext = T::ScriptContext> + 'static
     {
-        let world = self.world();
+        let world = self.world_mut();
+        provider.prepare_world(world);
         let mut providers = world.get_resource_mut::<ScriptApiProviders<T>>();
         providers.add_provider(provider);
     }

lyra-scripting/src/lua/dynamic_iter.rs

@@ -1,6 +1,6 @@
 use std::{ptr::NonNull, ops::{Range, Deref}};
 
-use lyra_ecs::{ComponentColumn, ComponentInfo, Archetype, ArchetypeId, ArchetypeEntityId, query::dynamic::{DynamicType, QueryDynamicType}, query::Fetch};
+use lyra_ecs::{ComponentColumn, ComponentInfo, Archetype, ArchetypeId, ArchetypeEntityId, query::dynamic::{DynamicType, QueryDynamicType}, query::Fetch, Entity};
 use lyra_reflect::TypeRegistry;
 
 #[cfg(feature = "lua")]
@@ -45,6 +45,11 @@ impl<'a> From<lyra_ecs::query::dynamic::FetchDynamicType<'a>> for FetchDynamicTy
     }
 }
 
+pub struct DynamicViewRow {
+    entity: Entity,
+    item: Vec<DynamicType>,
+}
+
 #[derive(Clone)]
 pub struct DynamicViewIter {
     world_ptr: ScriptWorldPtr,
@@ -69,15 +74,15 @@ impl<'a> From<lyra_ecs::query::dynamic::DynamicViewIter<'a>> for DynamicViewIter
 }
 
 impl Iterator for DynamicViewIter {
-    type Item = Vec<DynamicType>;
+    type Item = DynamicViewRow;
 
     fn next(&mut self) -> Option<Self::Item> {
         loop {
             if let Some(entity_index) = self.component_indices.next() {
                 let mut fetch_res = vec![];
 
+                let entity_index = ArchetypeEntityId(entity_index);
                 for fetcher in self.fetchers.iter_mut() {
-                    let entity_index = ArchetypeEntityId(entity_index);
                     if !fetcher.can_visit_item(entity_index) {
                         break;
                     } else {
@@ -90,7 +95,14 @@ impl Iterator for DynamicViewIter {
                     continue;
                 }
                 
-                return Some(fetch_res);
+                let arch = unsafe { self.archetypes.get_unchecked(self.next_archetype - 1).as_ref() };
+                let entity = arch.entity_of_index(entity_index).unwrap();
+                let row = DynamicViewRow {
+                    entity,
+                    item: fetch_res,
+                };
+
+                return Some(row);
             } else {
                 if self.next_archetype >= self.archetypes.len() {
                     return None; // ran out of archetypes to go through
@@ -108,7 +120,6 @@ impl Iterator for DynamicViewIter {
                     continue;
                 }
 
-                //let world = unsafe { self.world_ptr.as_ref() };
                 let world = self.world_ptr.as_ref();
 
                 self.fetchers = self.queries.iter()
@@ -121,6 +132,19 @@ impl Iterator for DynamicViewIter {
     }
 }
 
+#[cfg(feature = "lua")]
+pub struct ReflectedItem<'a> {
+    //pub proxy: &'a ReflectLuaProxy,
+    pub comp_ptr: NonNull<u8>,
+    pub comp_val: elua::Value<'a>,
+}
+
+#[cfg(feature = "lua")]
+pub struct ReflectedRow<'a> {
+    pub entity: Entity,
+    pub row: Vec<ReflectedItem<'a>>,
+}
+
 pub struct ReflectedIterator {
     pub world: ScriptWorldPtr,
     pub dyn_view: DynamicViewIter,
@@ -128,10 +152,9 @@ pub struct ReflectedIterator {
 }
 
 impl ReflectedIterator {
-    
-
     #[cfg(feature = "lua")]
-    pub fn next_lua<'a>(&mut self, lua: &'a mlua::Lua) -> Option<Vec<( (&'a ReflectLuaProxy, NonNull<u8>), mlua::AnyUserData<'a>)>> {
+    pub fn next_lua<'a>(&mut self, lua: &'a elua::State) -> Option<ReflectedRow<'a>> {
+        use elua::AsLua;
 
         let n = self.dyn_view.next();
         
@@ -142,23 +165,32 @@ impl ReflectedIterator {
                     .map(|r| NonNull::from(r.deref()));
             }
 
-            let mut dynamic_row = Vec::new();
-            for d in row.iter() {
+            let mut dynamic_row = vec![];
+            for d in row.item.iter() {
                 let id = d.info.type_id.as_rust();
                 let reflected_components = 
                     unsafe { self.reflected_components.as_ref().unwrap().as_ref() };
                 
                 let reg_type = reflected_components.get_type(id)
-                    .expect("Could not find type for dynamic view!");
+                    .expect("Requested type was not found in TypeRegistry");
                 let proxy = reg_type.get_data::<ReflectLuaProxy>()
+                    // TODO: properly handle this error
                     .expect("Type does not have ReflectLuaProxy as a TypeData");
-                
-                let userdata = (proxy.fn_as_uservalue)(lua, d.ptr).unwrap();
+                let value = (proxy.fn_as_lua)(lua, d.ptr.cast()).unwrap()
+                    .as_lua(lua).unwrap();
 
-                dynamic_row.push(( (proxy, d.ptr), userdata));
+                dynamic_row.push(ReflectedItem {
+                    comp_ptr: d.ptr,
+                    comp_val: value
+                });
             }
 
-            Some(dynamic_row)
+            let row = ReflectedRow {
+                entity: row.entity,
+                row: dynamic_row
+            };
+
+            Some(row)
         } else {
             None
         }

lyra-scripting/src/lua/loader.rs

@@ -1,6 +1,6 @@
 use std::sync::Arc;
 
-use lyra_resource::{ResourceLoader, Resource};
+use lyra_resource::{ResourceLoader, ResHandle};
 
 #[derive(Debug, Clone)]
 pub struct LuaScript {
@@ -13,7 +13,7 @@ pub struct LuaLoader;
 
 impl ResourceLoader for LuaLoader {
     fn extensions(&self) -> &[&str] {
-        &[".lua"]
+        &["lua"]
     }
 
     fn mime_types(&self) -> &[&str] {
@@ -23,7 +23,7 @@ impl ResourceLoader for LuaLoader {
     fn load(&self, _resource_manager: &mut lyra_resource::ResourceManager, path: &str) -> Result<std::sync::Arc<dyn lyra_resource::ResourceStorage>, lyra_resource::LoaderError> {
         let bytes = std::fs::read(path)?;
 
-        let s = Resource::with_data(path, LuaScript {
+        let s = ResHandle::with_data(path, LuaScript {
             bytes
         });
         
@@ -34,7 +34,7 @@ impl ResourceLoader for LuaLoader {
         let end = offset + length;
         let bytes = bytes[offset..end].to_vec();
         
-        let s = Resource::with_data("from bytes", LuaScript {
+        let s = ResHandle::with_data("from bytes", LuaScript {
             bytes
         });
 

lyra-scripting/src/lua/mod.rs

@@ -2,8 +2,7 @@ pub mod dynamic_iter;
 pub use dynamic_iter::*;
 
 pub mod world;
-use lyra_game::plugin::Plugin;
-use lyra_resource::ResourceManager;
+use elua::FromLua;
 pub use world::*;
 
 pub mod script;
@@ -12,120 +11,174 @@ pub use script::*;
 pub mod loader;
 pub use loader::*;
 
-#[cfg(test)]
-mod test;
+pub mod providers;
+pub mod wrappers;
 
-use std::{ptr::NonNull, sync::Mutex};
+pub mod proxy;
+pub use proxy::*;
 
-use lyra_ecs::DynamicBundle;
-use lyra_reflect::{Reflect, RegisteredType, FromType, AsRegisteredType};
+pub mod system;
+pub use system::*;
 
-use mlua::{Lua, AnyUserDataExt};
+use std::{any::TypeId, sync::Mutex};
 
+use lyra_ecs::{
+    Component, ComponentInfo, World
+};
+use lyra_reflect::{Reflect, TypeRegistry};
+use crate::ScriptBorrow;
+
+pub type LuaContext = Mutex<elua::State>;
+
+/// Name of a Lua function that is used to Reflect the Userdata, but without a value.
+/// 
+/// This is used for reflecting the userdata as an ECS Component or Resource. This **function**
+/// returns a [`ScriptBorrow`] with data as `None`. 
 pub const FN_NAME_INTERNAL_REFLECT_TYPE: &str = "__lyra_internal_reflect_type";
+
+/// Name of a Lua function that is used to Reflect the Userdata.
+/// 
+/// This is used for reflecting the userdata as an ECS Component or Resource. This **method**
+/// returns a [`ScriptBorrow`] with data as `Some`. **Anything that calls this expects the
+/// method to return data**.
 pub const FN_NAME_INTERNAL_REFLECT: &str = "__lyra_internal_reflect";
 
-use crate::{ScriptBorrow, ScriptDynamicBundle, ScriptApiProviders, ScriptContexts};
+/// Name of a Lua function implemented for Userdata types that can be made into components.
+/// 
+/// This is used for types that can be converted into components. When implementing this function,
+/// you must return a [`ScriptBorrow`] that contains the component for this userdata.
+/// You can return [`elua::Value::Nil`] if for some reason the type could not be converted
+/// into a component.
+/// 
+/// A good example of this is `LuaResHandle`. The resource handle is requested from the
+/// world, and could be a 3d model. The 3d model could then be manually wrapped as
+/// [`LuaModelComponent`] with its `new` function. But for quality of life, this internal
+/// function was created so that the userdata can be converted into its component
+/// type without having to wrap it.
+/// 
+/// Without implementing this function:
+/// ```lua
+/// local cube = world:request_res("assets/cube-texture-embedded.gltf")
+/// local cube_comp = ModelComponent.new(cube) -- annoying to write
+/// 
+/// local pos = Transform.from_translation(Vec3.new(0, 0, -8.0))
+/// world:spawn(pos, cube_comp)
+/// ```
+/// 
+/// With this function:
+/// ```lua
+/// local cube = world:request_res("assets/cube-texture-embedded.gltf")
+/// local pos = Transform.from_translation(Vec3.new(0, 0, -8.0))
+/// world:spawn(pos, cube)
+/// ```
+pub const FN_NAME_INTERNAL_AS_COMPONENT: &str = "__lyra_internal_refl_as_component";
 
-impl<'lua> mlua::FromLua<'lua> for ScriptBorrow {
-    fn from_lua(value: mlua::Value<'lua>, _lua: &'lua Lua) -> mlua::Result<Self> {
+/// A trait used for registering a Lua type with the world.
+pub trait RegisterLuaType {
+    /// Register a type to Lua that **is not wrapped**.
+    fn register_lua_type<'a, T>(&mut self)
+    where
+        T: Reflect + LuaProxy + Clone + elua::FromLua<'a> + elua::Userdata;
+
+    /// Registers a type to Lua that is wrapped another type.
+    /// This would be used for something like `UserdataRef<T>`.
+    fn register_lua_wrapper<'a, W>(&mut self)
+    where
+        W: Reflect + LuaProxy + LuaWrapper + Clone + elua::FromLua<'a> + elua::Userdata;
+
+    /// Registers a type to Lua that can be converted into and from Lua types.
+    fn register_lua_convert<T>(&mut self)
+    where
+        T: Clone + for<'a> elua::FromLua<'a> + for<'a> elua::AsLua<'a> + LuaWrapper + 'static;
+
+    /// Registers a type to Lua that implements [`elua::TableProxy`]
+    fn register_lua_table_proxy<'a, T, W>(&mut self)
+    where
+        T: elua::TableProxy + 'static,
+        W: Component;
+}
+
+impl RegisterLuaType for World {
+    fn register_lua_type<'a, T>(&mut self)
+    where
+        T: Reflect + LuaProxy + Clone + elua::FromLua<'a> + elua::Userdata
+    {
+        let mut registry = self.get_resource_mut::<TypeRegistry>();
+
+        let type_id = TypeId::of::<T>();
+
+        let reg_type = registry.get_type_or_default(type_id);
+        reg_type.add_data(ReflectLuaProxy::from_lua_proxy::<T>());
+    }
+
+    fn register_lua_wrapper<'a, W>(&mut self)
+    where
+        W: Reflect + LuaProxy + LuaWrapper + Clone + elua::FromLua<'a> + elua::Userdata
+    {
+        let mut registry = self.get_resource_mut::<TypeRegistry>();
+
+        let reg_type = registry.get_type_or_default(W::wrapped_type_id());
+        reg_type.add_data(ReflectLuaProxy::from_lua_proxy::<W>());
+    }
+
+    fn register_lua_convert<T>(&mut self)
+    where
+        T: Clone + for<'a> elua::FromLua<'a> + for<'a> elua::AsLua<'a> + LuaWrapper + 'static,
+    {
+        let mut registry = self.get_resource_mut::<TypeRegistry>();
+
+        let reg_type = registry.get_type_or_default(T::wrapped_type_id());
+        reg_type.add_data(ReflectLuaProxy::from_as_and_from_lua::<T>());
+    }
+
+    fn register_lua_table_proxy<'a, T, C>(&mut self)
+    where
+        T: elua::TableProxy + 'static,
+        C: Component
+    {
+        let mut registry = self.get_resource_mut::<TypeRegistry>();
+
+        let reg_type = registry.get_type_or_default(TypeId::of::<C>());
+        reg_type.add_data(ReflectLuaProxy::from_table_proxy::<T>());
+        drop(registry);
+
+        let mut lookup = self.get_resource_or_else::<LuaTableProxyLookup, _>(LuaTableProxyLookup::default);
+        lookup.typeid_from_name.insert(T::table_name(), TypeId::of::<C>());
+        
+        let info = ComponentInfo::new::<C>();
+        lookup.comp_info_from_name.insert(T::table_name(), info);
+    }
+}
+
+impl<'lua> elua::FromLua<'lua> for ScriptBorrow {
+    fn from_lua(_: &'lua elua::State, value: elua::Value<'lua>) -> elua::Result<Self> {
         match value {
-            mlua::Value::UserData(ud) => Ok(ud.borrow::<Self>()?.clone()),
+            elua::Value::Userdata(ud) => Ok(ud.as_ref::<Self>()?.clone()),
             _ => unreachable!(),
         }
     }
 }
 
-impl mlua::UserData for ScriptBorrow {}
-
-pub fn reflect_user_data(ud: &mlua::AnyUserData) -> ScriptBorrow {
-    ud.call_method::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT, ())
-        .expect("Type does not implement '__internal_reflect' properly")
-}
-
-pub trait LuaProxy {
-    fn as_lua_value<'lua>(lua: &'lua mlua::Lua, this: &dyn Reflect) -> mlua::Result<mlua::AnyUserData<'lua>>;
-    fn apply(lua: &mlua::Lua, this: &mut dyn Reflect, apply: &mlua::AnyUserData) -> mlua::Result<()>;
-}
-
-impl<'a, T: Reflect + Clone + mlua::FromLua<'a> + mlua::UserData> LuaProxy for T {
-    fn as_lua_value<'lua>(lua: &'lua mlua::Lua, this: &dyn Reflect) -> mlua::Result<mlua::AnyUserData<'lua>> {
-        let this = this.as_any().downcast_ref::<T>().unwrap();
-        lua.create_userdata(this.clone())
-    }
-
-    fn apply(_lua: &mlua::Lua, this: &mut dyn Reflect, apply: &mlua::AnyUserData) -> mlua::Result<()> {
-        let this = this.as_any_mut().downcast_mut::<T>().unwrap();
-        let apply = apply.borrow::<T>()?;
-
-        *this = apply.clone();
-
-        Ok(())
-    }
-}
-
-#[derive(Clone)]
-pub struct ReflectLuaProxy {
-    fn_as_uservalue: for<'a> fn(lua: &'a Lua, this_ptr: NonNull<u8>) -> mlua::Result<mlua::AnyUserData<'a>>,
-    fn_apply: for<'a> fn(lua: &'a Lua, this_ptr: NonNull<u8>, apply: &'a mlua::AnyUserData<'a>) -> mlua::Result<()>,
-}
-
-impl<'a, T: Reflect + LuaProxy + Clone + mlua::FromLua<'a> + mlua::UserData> FromType<T> for ReflectLuaProxy {
-    fn from_type() -> Self {
-        Self {
-            fn_as_uservalue: |lua, this| -> mlua::Result<mlua::AnyUserData> {
-                let this = unsafe { this.cast::<T>().as_ref() };
-                <T as LuaProxy>::as_lua_value(lua, this)
-            },
-            fn_apply: |lua, ptr, apply| {
-                let this = unsafe { ptr.cast::<T>().as_mut() };
-                <T as LuaProxy>::apply(lua, this, apply)
-            }
+impl<'lua> elua::FromLuaVec<'lua> for ScriptBorrow {
+    fn from_lua_value_vec(state: &'lua elua::State, mut values: elua::ValueVec<'lua>) -> elua::Result<Self> {
+        if let Some(v) = values.pop_front() {
+            ScriptBorrow::from_lua(state, v)
+        } else {
+            Err(elua::Error::Nil)
         }
     }
 }
 
-impl<'lua> mlua::FromLua<'lua> for ScriptDynamicBundle {
-    fn from_lua(value: mlua::Value<'lua>, _lua: &'lua Lua) -> mlua::Result<Self> {
-        match value {
-            mlua::Value::UserData(ud) => Ok(ud.borrow::<Self>()?.clone()),
-            mlua::Value::Nil => Err(mlua::Error::FromLuaConversionError { from: "Nil", to: "DynamicBundle", message: Some("Value was nil".to_string()) }),
-            _ => panic!(),
-        }
+impl elua::Userdata for ScriptBorrow {
+    fn name() -> String {
+        "ScriptBorrow".to_string()
     }
+
+    fn build<'a>(_: &mut elua::UserdataBuilder<'a, Self>) { }
 }
 
-impl mlua::UserData for ScriptDynamicBundle {
-    fn add_methods<'lua, M: mlua::prelude::LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
-        methods.add_function("new", |_, ()| {
-            Ok(ScriptDynamicBundle(DynamicBundle::new()))
-        });
-
-        methods.add_method_mut("push", |_, this, (comp,): (mlua::AnyUserData,)| {
-            let script_brw = comp.call_method::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT, ())?;
-            let reflect = script_brw.reflect_branch.as_component_unchecked();
-
-            let refl_data = script_brw.data.unwrap();
-            let refl_data = refl_data.as_ref();
-            reflect.bundle_insert(&mut this.0, refl_data);
-
-            Ok(())
-        });
-    }
-}
-
-#[derive(Default)]
-pub struct LuaScriptingPlugin;
-
-impl Plugin for LuaScriptingPlugin {
-    fn setup(&self, game: &mut lyra_game::game::Game) {
-        let world = game.world();
-
-        world.add_resource_default::<LuaHost>();
-        world.add_resource_default::<ScriptApiProviders<LuaHost>>();
-        world.add_resource_default::<ScriptContexts<Mutex<mlua::Lua>>>();
-
-        let mut loader = world.get_resource_or_else(ResourceManager::default);
-        loader.register_loader::<LuaLoader>();
-    }
+/// Helper function used for reflecting userdata as a ScriptBorrow
+pub fn reflect_user_data(ud: &elua::AnyUserdata) -> ScriptBorrow {
+    ud.execute_method::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT, ())
+        .expect("Type does not implement internal reflect method properly")
 }

lyra-scripting/src/lua/providers/ecs.rs

@@ -0,0 +1,49 @@
+use lyra_ecs::ResourceObject;
+use lyra_reflect::Reflect;
+
+use crate::{lua::{wrappers::{LuaActionHandler, LuaDeltaTime, LuaModelComponent}, LuaContext, RegisterLuaType, FN_NAME_INTERNAL_REFLECT_TYPE}, ScriptApiProvider, ScriptBorrow, ScriptData, ScriptDynamicBundle, ScriptWorldPtr};
+
+#[derive(Default)]
+pub struct LyraEcsApiProvider;
+
+impl ScriptApiProvider for LyraEcsApiProvider {
+    type ScriptContext = LuaContext;
+
+    fn prepare_world(&mut self, world: &mut lyra_ecs::World) {
+        world.register_lua_convert::<LuaDeltaTime>();
+        world.register_lua_wrapper::<LuaModelComponent>();
+        world.register_lua_wrapper::<LuaActionHandler>();
+    }
+
+    fn expose_api(&mut self, _: &ScriptData, ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
+        let ctx = ctx.lock().unwrap();
+
+        let globals = ctx.globals()?;
+        globals.set("World", ctx.create_proxy::<ScriptWorldPtr>()?)?;
+        globals.set("DynamicBundle", ctx.create_proxy::<ScriptDynamicBundle>()?)?;
+        globals.set("ModelComponent", ctx.create_proxy::<LuaModelComponent>()?)?;
+        globals.set("ActionHandler", ctx.create_proxy::<LuaActionHandler>()?)?;
+
+        let dt_table = create_reflect_table::<lyra_game::DeltaTime>(&ctx)?;
+        globals.set("DeltaTime", dt_table)?;
+
+        Ok(())
+    }
+
+    fn setup_script(&mut self, _: &crate::ScriptData, _: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
+        Ok(())
+    }
+
+    fn update_script_environment(&mut self, _: crate::ScriptWorldPtr, _: &crate::ScriptData, _: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
+        Ok(())
+    }
+}
+
+fn create_reflect_table<T: Reflect + ResourceObject + Default + 'static>(lua: &elua::State) -> elua::Result<elua::Table> {
+    let table = lua.create_table()?;
+    table.set(FN_NAME_INTERNAL_REFLECT_TYPE, lua.create_function(|_, ()| {
+        Ok(ScriptBorrow::from_resource::<T>(None))
+    })?)?;
+
+    Ok(table)
+}

lyra-scripting/src/lua/providers/math.rs

@@ -0,0 +1,41 @@
+use lyra_ecs::World;
+use crate::lua::wrappers::{LuaQuat, LuaTransform, LuaVec3};
+use crate::ScriptData;
+use crate::lua::RegisterLuaType;
+
+use crate::{ScriptApiProvider, lua::LuaContext};
+
+#[derive(Default)]
+pub struct LyraMathApiProvider;
+
+impl ScriptApiProvider for LyraMathApiProvider {
+    type ScriptContext = LuaContext;
+
+    fn prepare_world(&mut self, world: &mut World) { 
+        world.register_lua_wrapper::<LuaVec3>();
+        world.register_lua_wrapper::<LuaQuat>();
+        world.register_lua_wrapper::<LuaTransform>();
+    }
+
+    fn expose_api(&mut self, _data: &ScriptData, ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
+        let ctx = ctx.lock().unwrap();
+
+        /* let bytes = include_bytes!("../../../scripts/lua/math/transform.lua");
+        ctx.load("lyra/math/transform.lua", bytes.as_slice())?.execute(())?; */
+
+        let globals = ctx.globals()?;
+        globals.set("Vec3", ctx.create_proxy::<LuaVec3>()?)?;
+        globals.set("Quat", ctx.create_proxy::<LuaQuat>()?)?;
+        globals.set("Transform", ctx.create_proxy::<LuaTransform>()?)?;
+
+        Ok(())
+    }
+
+    fn setup_script(&mut self, _: &crate::ScriptData, _: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
+        Ok(())
+    }
+
+    fn update_script_environment(&mut self, _: crate::ScriptWorldPtr, _: &crate::ScriptData, _: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
+        Ok(())
+    }
+}

lyra-scripting/src/lua/providers/mod.rs

@@ -0,0 +1,8 @@
+pub mod util;
+pub use util::*;
+
+pub mod math;
+pub use math::*;
+
+pub mod ecs;
+pub use ecs::*;

lyra-scripting/src/lua/providers/util.rs

@@ -0,0 +1,134 @@
+use std::sync::{Mutex, Arc};
+
+use tracing::{debug_span, debug};
+
+use crate::{ScriptApiProvider, ScriptData};
+
+/// This Api provider provides some nice utility functions.
+/// 
+/// Functions:
+/// ```lua
+/// ---@param str (string) A format string.
+/// ---@param ... (any varargs) The variables to format into the string. These values must be
+///     primitives, or if UserData, have the '__tostring' meta method
+/// function printf(str, ...)
+/// ```
+#[derive(Default)]
+pub struct UtilityApiProvider;
+
+impl ScriptApiProvider for UtilityApiProvider {
+    type ScriptContext = Mutex<elua::State>;
+
+    fn expose_api(&mut self, data: &ScriptData, ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
+        let ctx = ctx.lock().unwrap();
+
+        //fn printf(lua: &elua::State, (mut text, formats): (String, elua::Variadic<elua::Value>)) -> elua::Result<()> {
+        let printf = |lua: &elua::State, (mut text, formats): (String, elua::Variadic<elua::Value>)| {
+            let mut formatted = String::new();
+            let mut arg_num = 0;
+
+            while let Some(start) = text.find("{}") {
+                let val_str = match formats.get(arg_num) {
+                    Some(v) => match v {
+                        elua::Value::Nil => "nil".to_string(),
+                        elua::Value::Boolean(b) => b.to_string(),
+                        elua::Value::Number(n) => n.to_string(),
+                        elua::Value::String(s) => s.clone(),
+                        elua::Value::Table(_) => {
+                            return Err(elua::Error::runtime("unable to get string representation of Table"));
+                        },
+                        elua::Value::Function(_) => {
+                            return Err(elua::Error::runtime("unable to get string representation of Function"));
+                        },
+                        elua::Value::Thread(_) => {
+                            return Err(elua::Error::runtime("unable to get string representation of Thread"));
+                        },
+                        elua::Value::Userdata(ud) => {
+                            if let Ok(tos) = ud.get::<_, elua::Function>(elua::MetaMethod::ToString) {
+                                tos.exec::<_, String>(())?
+                            } else {
+                                return Err(elua::Error::runtime("UserData does not implement MetaMethod '__tostring'"));
+                            }
+                        },
+                        elua::Value::None => "None".to_string(),
+                        elua::Value::Multi(_) => {
+                            return Err(elua::Error::runtime("unable to get string representation of ValueVec"));
+                        },
+                    },
+                    None => {
+                        let got_args = arg_num;// - 1;
+
+                        // continue searching for {} to get the number of format spots for the error message.
+                        while let Some(start) = text.find("{}") {
+                            text = text[start + 2..].to_string();
+                            arg_num += 1;
+                        }
+
+                        return Err(elua::Error::BadArgument {
+                            func: Some("printf".to_string()),
+                            arg_index: 2,
+                            arg_name: Some("fmt...".to_string()),
+                            error: Arc::new(elua::Error::Runtime(format!(
+                                "not enough args \
+                                given for the amount of format areas in the string. Expected {}, \
+                                got {}.", arg_num, got_args
+                            )))
+                        })
+                    },
+                };
+
+                formatted = format!("{}{}{}", formatted, &text[0..start], val_str);
+
+                text = text[start + 2..].to_string();
+
+                arg_num += 1;
+            }
+
+            if arg_num < formats.len() {
+                return Err(elua::Error::BadArgument {
+                    func: Some("printf".to_string()),
+                    arg_index: 2,
+                    arg_name: Some("fmt...".to_string()),
+                    error: Arc::new(elua::Error::Runtime(format!(
+                        "got more args \
+                        than format areas in the string. Expected {}, got {}.", formats.len(), arg_num
+                    )))
+                })
+            }
+            
+            formatted = format!("{}{}", formatted, text);
+
+            lua.globals()?
+                .get::<_, elua::Function>("print")?
+                .exec::<_, ()>(formatted)?;
+
+            Ok(())
+        };
+        
+        let script_name_reg = ctx.registry_insert(data.name.clone())?;
+
+        let printf_func = ctx.create_function(printf)?;
+        let print_func = ctx.create_function(move |lua, text: String| {
+            let name = lua.registry_get::<String>(script_name_reg)?;
+            let _span = debug_span!("lua", script = &name).entered();
+
+            debug!(target: "lyra_scripting::lua", "{}", text);
+
+            Ok(())
+        })?;
+
+        let globals = ctx.globals()?;
+        globals.set("printf", printf_func)?;
+        globals.set("print", print_func)?;
+        
+        Ok(())
+    }
+
+    fn setup_script(&mut self, _data: &ScriptData, _ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
+        Ok(())
+    }
+
+    fn update_script_environment(&mut self, _world: crate::ScriptWorldPtr, _data: &ScriptData, _ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
+        Ok(())
+    }
+}

lyra-scripting/src/lua/proxy.rs

@@ -0,0 +1,179 @@
+use std::{any::TypeId, collections::HashMap, ptr::NonNull};
+
+use elua::{FromLua, TableProxy, AsLua};
+use lyra_ecs::{ComponentInfo, DynamicBundle};
+use lyra_reflect::Reflect;
+
+use crate::{ScriptBorrow, ScriptDynamicBundle};
+
+use super::FN_NAME_INTERNAL_REFLECT;
+
+pub trait LuaWrapper {
+    /// The type id of the wrapped type.
+    fn wrapped_type_id() -> TypeId;
+}
+
+/// A trait that used to convert something into lua, or to set something to a value from lua.
+pub trait LuaProxy {
+    fn as_lua_value<'lua>(
+        lua: &'lua elua::State,
+        this: &dyn Reflect,
+    ) -> elua::Result<elua::Value<'lua>>;
+
+    fn apply(
+        lua: &elua::State,
+        this: &mut dyn Reflect,
+        value: &elua::Value,
+    ) -> elua::Result<()>;
+}
+
+impl<'a, T> LuaProxy for T
+where
+    T: Reflect + Clone + elua::FromLua<'a> + elua::Userdata
+{
+    fn as_lua_value<'lua>(
+        lua: &'lua elua::State,
+        this: &dyn Reflect,
+    ) -> elua::Result<elua::Value<'lua>> {
+        let this = this.as_any().downcast_ref::<T>().unwrap();
+        lua.create_userdata(this.clone())
+            .and_then(|ud| ud.as_lua(lua))
+    }
+
+    fn apply(
+        _: &elua::State,
+        this: &mut dyn Reflect,
+        apply: &elua::Value,
+    ) -> elua::Result<()> {
+        let this = this.as_any_mut().downcast_mut::<T>().unwrap();
+        let apply = apply.as_userdata()
+            .expect("Somehow a non-userdata Lua Value was provided to a LuaProxy")
+            .as_ref::<T>()?;
+
+        *this = apply.clone();
+
+        Ok(())
+    }
+}
+
+/// A struct that is used for retrieving rust type ids of types that implement `TableProxy`.
+#[derive(Default)]
+pub struct LuaTableProxyLookup {
+    pub(crate) typeid_from_name: HashMap<String, TypeId>,
+    pub(crate) comp_info_from_name: HashMap<String, ComponentInfo>,
+}
+
+/// A struct used for Proxying types to and from Lua.
+#[derive(Clone)]
+pub struct ReflectLuaProxy {
+    pub fn_as_lua:
+        for<'a> fn(lua: &'a elua::State, this_ptr: NonNull<()>) -> elua::Result<elua::Value<'a>>,
+    pub fn_apply: for<'a> fn(
+        lua: &'a elua::State,
+        this_ptr: NonNull<()>,
+        value: &'a elua::Value<'a>,
+    ) -> elua::Result<()>,
+}
+
+impl ReflectLuaProxy {
+    /// Create from a type that implements LuaProxy (among some other required traits)
+    pub fn from_lua_proxy<'a, T>() -> Self
+    where 
+        T: Reflect + LuaProxy
+    {
+        Self {
+            fn_as_lua: |lua, this| -> elua::Result<elua::Value> {
+                let this = unsafe { this.cast::<T>().as_ref() };
+                <T as LuaProxy>::as_lua_value(lua, this)
+            },
+            fn_apply: |lua, ptr, apply| {
+                let this = unsafe { ptr.cast::<T>().as_mut() };
+                <T as LuaProxy>::apply(lua, this, apply)
+            },
+        }
+    }
+
+    pub fn from_table_proxy<T>() -> Self
+    where
+        T: TableProxy
+    {
+        Self {
+            fn_as_lua: |lua, this| -> elua::Result<elua::Value> {
+                let this = unsafe { this.cast::<T>().as_ref() };
+                this.as_table(lua)
+                    .and_then(|t| t.as_lua(lua))
+            },
+            fn_apply: |lua, ptr, value| {
+                let this = unsafe { ptr.cast::<T>().as_mut() };
+                let table = value.as_table()
+                    .expect("Somehow a non-Table Lua Value was provided to a TableProxy");
+                let new_val = T::from_table(lua, table.clone())?;
+
+                *this = new_val;
+                
+                Ok(())
+            },
+        }
+    }
+
+    /// Create from a type that implements FromLua and AsLua
+    pub fn from_as_and_from_lua<T>() -> Self
+    where
+        T: for<'a> elua::FromLua<'a> + for<'a> elua::AsLua<'a> + Clone
+    {
+        Self {
+            fn_as_lua: |lua, this| -> elua::Result<elua::Value> {
+                let this = unsafe { this.cast::<T>().as_ref() };
+                this.clone().as_lua(lua)
+            },
+            fn_apply: |lua, ptr, value| {
+                let this = unsafe { ptr.cast::<T>().as_mut() };
+                let new_val = T::from_lua(lua, value.clone())?;
+
+                *this = new_val;
+                
+                Ok(())
+            },
+        }
+    }
+}
+
+impl<'lua> elua::FromLua<'lua> for ScriptDynamicBundle {
+    fn from_lua(_: &'lua elua::State, val: elua::Value<'lua>) -> elua::Result<Self> {
+        match val {
+            elua::Value::Userdata(ud) => Ok(ud.as_ref::<Self>()?.clone()),
+            elua::Value::Nil => Err(elua::Error::Nil),
+            _ => unreachable!(),
+        }
+    }
+}
+
+impl<'lua> elua::FromLuaVec<'lua> for ScriptDynamicBundle {
+    fn from_lua_value_vec(state: &'lua elua::State, mut values: elua::ValueVec<'lua>) -> elua::Result<Self> {
+        if let Some(v) = values.pop_front() {
+            Ok(ScriptDynamicBundle::from_lua(state, v)?)
+        } else {
+            Err(elua::Error::Nil)
+        }
+    }
+}
+
+impl elua::Userdata for ScriptDynamicBundle {
+    fn name() -> String {
+        "Bundle".to_string()
+    }
+
+    fn build<'a>(builder: &mut elua::UserdataBuilder<'a, Self>) {
+        builder
+            .function("new", |_, ()| Ok(ScriptDynamicBundle(DynamicBundle::new())))
+            .method_mut("push", |_, this, comp: elua::AnyUserdata| {
+                let script_brw = comp.execute_method::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT, ())?;
+                let reflect = script_brw.reflect_branch.as_component_unchecked();
+
+                let refl_data = script_brw.data.unwrap();
+                reflect.bundle_insert(&mut this.0, refl_data);
+
+                Ok(())
+            });
+    }
+}

lyra-scripting/src/lua/script.rs

@@ -1,46 +1,41 @@
 use std::sync::Mutex;
 
-use tracing::debug;
+use elua::{AsLua, StdLibraries};
 
-use crate::{ScriptHost, ScriptError, ScriptWorldPtr};
+use crate::{ScriptHost, ScriptError, ScriptWorldPtr, ScriptEntity};
 
 #[derive(Default)]
 pub struct LuaHost;
 
-fn try_call_lua_function(lua: &mlua::Lua, fn_name: &str) -> Result<(), ScriptError> {
-    let globals = lua.globals();
-        
-    match globals.get::<_, mlua::Function>(fn_name) {
-        Ok(init_fn) => {
-            init_fn.call(())
-                .map_err(ScriptError::MluaError)?;
-        },
-        Err(mlua::Error::FromLuaConversionError { from: "nil", to: "function", message: None }) => {
-            debug!("Function '{}' was not found, ignoring...", fn_name)
-            // ignore
-        },
-        Err(e) => {
-            return Err(ScriptError::MluaError(e));
-        },
+fn try_call_lua_function(lua: &elua::State, fn_name: &str) -> Result<(), ScriptError> {
+    let globals = lua.globals()?;
+
+    if globals.has_key(fn_name)? {
+        let lua_fn = globals.get::<_, elua::Function>(fn_name)?;
+        lua_fn.exec(())
+            .map_err(ScriptError::MluaError)?;
     }
 
     Ok(())
 }
 
 impl ScriptHost for LuaHost {
-    type ScriptContext = Mutex<mlua::Lua>;
+    type ScriptContext = Mutex<elua::State>;
 
     fn load_script(&mut self, script: &[u8], script_data: &crate::ScriptData, providers: &mut crate::ScriptApiProviders<Self>) -> Result<Self::ScriptContext, crate::ScriptError> {
-        let mut ctx = Mutex::new(mlua::Lua::new());
-
+        let mut ctx = Mutex::new({
+            let s = elua::State::new();
+            s.expose_libraries(StdLibraries::all());
+            s
+        });
+        
         for provider in providers.apis.iter_mut() {
-            provider.expose_api(&mut ctx)?;
+            provider.expose_api(script_data, &mut ctx)?;
         }
 
         let lua = ctx.lock().unwrap();
-        lua.load(script)
-            .set_name(&script_data.name)
-            .exec()
+        lua.load(&script_data.name, script)?
+            .execute(())
             .map_err(|e| ScriptError::MluaError(e))?;
         drop(lua);
 
@@ -52,22 +47,26 @@ impl ScriptHost for LuaHost {
             provider.setup_script(script_data, ctx)?;
         }
 
-        let ctx = ctx.lock().expect("Failure to get Lua ScriptContext");
-        try_call_lua_function(&ctx, "init")?;
-
         Ok(())
     }
 
     /// Runs the update step of the lua script.
     /// 
-    /// It looks for an `update` function with zero parameters in [`the ScriptContext`] and executes it.
-    fn update_script(&mut self, world: ScriptWorldPtr, script_data: &crate::ScriptData, ctx: &mut Self::ScriptContext, providers: &mut crate::ScriptApiProviders<Self>) -> Result<(), ScriptError> {
+    /// It looks for an `update` function with zero parameters in the [`ScriptContext`] and executes it.
+    fn call_script(&mut self, world: ScriptWorldPtr, script_data: &crate::ScriptData,
+            ctx: &mut Self::ScriptContext, providers: &mut crate::ScriptApiProviders<Self>,
+            function_name: &str) -> Result<(), ScriptError> {
         for provider in providers.apis.iter_mut() {
             provider.update_script_environment(world.clone(), script_data, ctx)?;
         }
-        
+
         let ctx = ctx.lock().expect("Failure to get Lua ScriptContext");
-        try_call_lua_function(&ctx, "update")?;
+        
+        let globals = ctx.globals()?;
+        globals.set("world", world.as_lua(&ctx)?)?;
+        globals.set("entity", ScriptEntity(script_data.entity).as_lua(&ctx)?)?;
+        
+        try_call_lua_function(&ctx, function_name)?;
 
         Ok(())
     }

lyra-scripting/src/lua/system.rs

@@ -0,0 +1,258 @@
+use anyhow::anyhow;
+use lyra_ecs::{query::{Entities, ResMut, View}, World};
+use lyra_game::{game::GameStages, plugin::Plugin};
+use lyra_reflect::TypeRegistry;
+use lyra_resource::ResourceManager;
+use tracing::{debug, debug_span, error, trace};
+
+use crate::{GameScriptExt, ScriptApiProviders, ScriptContexts, ScriptData, ScriptError, ScriptHost, ScriptList, ScriptWorldPtr};
+
+use super::{providers::{LyraEcsApiProvider, LyraMathApiProvider, UtilityApiProvider}, LuaContext, LuaHost, LuaLoader, LuaScript};
+
+/// A system that creates the script contexts in the world as new scripts are found
+pub fn lua_scripts_create_contexts(
+    world: &mut World,
+    mut host: ResMut<LuaHost>,
+    mut contexts: ResMut<ScriptContexts<LuaContext>>,
+    mut providers: ResMut<ScriptApiProviders<LuaHost>>,
+    view: View<(Entities, &ScriptList<LuaScript>)>,
+) -> anyhow::Result<()> {
+    for (en, scripts) in view.into_iter() {
+        for script in scripts.iter() {
+            if !contexts.has_context(script.id()) {
+                let script_data = ScriptData {
+                    name: script.name().to_string(),
+                    script_id: script.id(),
+                    entity: en,
+                };
+
+                let script_name = script.name();
+                let _span = debug_span!("lua", script = script_name).entered();
+
+                if let Some(script_res) = &script.res_handle().try_data_ref() {
+                    debug!("Loading script...");
+                    let mut script_ctx =
+                        host.load_script(&script_res.bytes, &script_data, &mut providers)?;
+                    trace!("Finished loading script");
+
+                    debug!("Setting up script...");
+                    host.setup_script(&script_data, &mut script_ctx, &mut providers)?;
+                    trace!("Finished setting up script");
+
+                    // call on_init, handle the error
+                    let world_ptr = ScriptWorldPtr::from_ref(&world);
+                    match host.call_script(
+                        world_ptr,
+                        &script_data,
+                        &mut script_ctx,
+                        &mut providers,
+                        "on_init",
+                    ) {
+                        Ok(()) => {}
+                        Err(e) => match e {
+                            ScriptError::MluaError(m) => {
+                                error!("Script '{}' ran into an error: {}", script.name(), m);
+                            }
+                            ScriptError::Other(_) => return Err(e.into()),
+                        },
+                    }
+
+                    contexts.add_context(script.id(), script_ctx);
+                    break;
+                } else {
+                    trace!("Script is not loaded yet, skipping for now");
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
+/// A system that triggers a reload of watched script resources.
+///
+/// Note: This only works if the script is watched. See [`lyra_resource::ResourceManager::watch`].
+pub fn lua_scripts_reload_system(
+    mut contexts: ResMut<ScriptContexts<LuaContext>>,
+    mut resman: ResMut<ResourceManager>,
+    view: View<&ScriptList<LuaScript>>,
+) -> anyhow::Result<()> {
+    for scripts in view.into_iter() {
+        for script in scripts.iter() {
+            let handle = script.res_handle();
+            if handle.is_watched() {
+                let handle_path = handle.path();
+                let watch_recv = resman.watcher_event_recv(&handle_path).unwrap();
+
+                match watch_recv.try_recv() {
+                    Ok(ev) => {
+                        let evs =
+                            ev.map_err(|e| anyhow!("Script watcher ran into errors: {:?}", e))?;
+
+                        if evs.iter().any(|ev| ev.event.kind.is_modify()) {
+                            debug!(
+                                "Detected change of '{}' script, triggering reload",
+                                handle_path
+                            );
+
+                            contexts.remove_context(script.id()).unwrap();
+                            resman.reload(handle)?;
+                        }
+                    }
+                    Err(e) => match e {
+                        lyra_resource::channel::TryRecvError::Empty => {}
+                        lyra_resource::channel::TryRecvError::Disconnected => {
+                            resman.stop_watching(&handle_path).unwrap();
+                        }
+                    },
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
+fn lua_call_script_function(world: &mut World, stage_name: &str) -> anyhow::Result<()> {
+    let world_ptr = ScriptWorldPtr::from_ref(&world);
+    let mut host = world.get_resource_mut::<LuaHost>();
+    let mut contexts = world.get_resource_mut::<ScriptContexts<LuaContext>>();
+    let mut providers = world.get_resource_mut::<ScriptApiProviders<LuaHost>>();
+
+    for (en, scripts) in world.view_iter::<(Entities, &ScriptList<LuaScript>)>() {
+        for script in scripts.iter() {
+            let script_data = ScriptData {
+                name: script.name().to_string(),
+                script_id: script.id(),
+                entity: en,
+            };
+
+            if let Some(ctx) = contexts.get_context_mut(script.id()) {
+                trace!(
+                    "Running '{}' function in script '{}'",
+                    stage_name,
+                    script.name()
+                );
+
+                match host.call_script(
+                    world_ptr.clone(),
+                    &script_data,
+                    ctx,
+                    &mut providers,
+                    stage_name,
+                ) {
+                    Ok(()) => {}
+                    Err(e) => match e {
+                        ScriptError::MluaError(m) => {
+                            error!("Script '{}' ran into an error: {}", script.name(), m);
+                        }
+                        ScriptError::Other(_) => return Err(e.into()),
+                    },
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
+/// This system executes the 'on_update' function of lua scripts in the world. It is meant to run
+/// during the 'GameStages::Update' stage.
+pub fn lua_script_update_stage_system(world: &mut World) -> anyhow::Result<()> {
+    lua_call_script_function(world, "on_update")
+}
+
+/// This system executes the 'on_pre_update' function of lua scripts in the world. It is meant to run
+/// during the 'GameStages::PreUpdate' stage.
+pub fn lua_script_pre_update_stage_system(world: &mut World) -> anyhow::Result<()> {
+    lua_call_script_function(world, "on_pre_update")
+}
+
+/// This system executes the 'on_post_update' function of lua scripts in the world. It is meant to run
+/// during the 'GameStages::PostUpdate' stage.
+pub fn lua_script_post_update_stage_system(world: &mut World) -> anyhow::Result<()> {
+    lua_call_script_function(world, "on_post_update")
+}
+
+/// This system executes the 'on_first' function of lua scripts in the world. It is meant to run
+/// during the 'GameStages::First' stage.
+pub fn lua_script_first_stage_system(world: &mut World) -> anyhow::Result<()> {
+    lua_call_script_function(world, "on_first")
+}
+
+/// This system executes the 'on_last' function of lua scripts in the world. It is meant to run
+/// during the 'GameStages::Last' stage.
+pub fn lua_script_last_stage_system(world: &mut World) -> anyhow::Result<()> {
+    lua_call_script_function(world, "on_last")
+}
+
+#[derive(Default)]
+pub struct LuaScriptingPlugin;
+
+impl Plugin for LuaScriptingPlugin {
+    fn setup(&self, game: &mut lyra_game::game::Game) {
+        let world = game.world_mut();
+
+        world.add_resource_default::<TypeRegistry>();
+
+        world.add_resource_default::<LuaHost>();
+        world.add_resource_default::<ScriptApiProviders<LuaHost>>();
+        world.add_resource_default::<ScriptContexts<LuaContext>>();
+
+        let mut loader = world
+            .try_get_resource_mut::<ResourceManager>()
+            .expect("Add 'ResourceManager' to the world before trying to add this plugin");
+        loader.register_loader::<LuaLoader>();
+        drop(loader);
+
+        game.add_script_api_provider::<LuaHost, _>(UtilityApiProvider);
+        game.add_script_api_provider::<LuaHost, _>(LyraEcsApiProvider);
+        game.add_script_api_provider::<LuaHost, _>(LyraMathApiProvider);
+
+        game.add_system_to_stage(
+            GameStages::First,
+            "lua_create_contexts",
+            lua_scripts_create_contexts,
+            &[],
+        )
+        .add_system_to_stage(
+            GameStages::First,
+            "lua_reload_scripts",
+            lua_scripts_reload_system,
+            &["lua_create_contexts"],
+        )
+        .add_system_to_stage(
+            GameStages::First,
+            "lua_first_stage",
+            lua_script_first_stage_system,
+            &["lua_reload_scripts"],
+        )
+        // cannot depend on 'lua_create_contexts' since it will cause a panic.
+        // the staged executor separates the executor of a single stage so this system
+        // cannot depend on the other one.
+        .add_system_to_stage(
+            GameStages::PreUpdate,
+            "lua_pre_update",
+            lua_script_pre_update_stage_system,
+            &[],
+        )
+        .add_system_to_stage(
+            GameStages::Update,
+            "lua_update",
+            lua_script_update_stage_system,
+            &[],
+        )
+        .add_system_to_stage(
+            GameStages::PostUpdate,
+            "lua_post_update",
+            lua_script_post_update_stage_system,
+            &[],
+        )
+        .add_system_to_stage(
+            GameStages::Last,
+            "lua_last_stage",
+            lua_script_last_stage_system,
+            &[],
+        );
+    }
+}

lyra-scripting/src/lua/test.rs

@@ -1,219 +0,0 @@
-use std::{sync::{Mutex, Arc}, alloc::Layout, ptr::NonNull};
-
-use lyra_ecs::{World, query::{Res, View, Entities, ResMut}, Component, system::{GraphExecutor, IntoSystem}};
-use lyra_resource::ResourceManager;
-use mlua::{IntoLua, AnyUserDataExt};
-use tracing::{debug, error};
-use tracing_subscriber::{layer::SubscriberExt, fmt, filter, util::SubscriberInitExt};
-
-use crate::{ScriptHost, ScriptData, ScriptApiProvider, ScriptApiProviders, ScriptError, ScriptWorldPtr, ScriptList, Script, ScriptContexts};
-
-use super::{LuaHost, LuaLoader, LuaScript};
-
-use crate::lyra_engine;
-
-fn enable_tracing() {
-    tracing_subscriber::registry()
-        .with(fmt::layer().with_writer(std::io::stdout))
-        .init();
-}
-
-#[derive(Default)]
-struct PrintfProvider;
-
-impl ScriptApiProvider for PrintfProvider {
-    type ScriptContext = Mutex<mlua::Lua>;
-
-    fn expose_api(&mut self, ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
-        let ctx = ctx.lock().unwrap();
-
-        fn printf(lua: &mlua::Lua, (mut text, formats): (String, mlua::Variadic<mlua::Value>)) -> mlua::Result<()> {
-            let mut formatted = String::new();
-            let mut arg_num = 0;
-
-            while let Some(start) = text.find("{}") {
-                let val_str = match formats.get(arg_num) {
-                    Some(v) => match v {
-                        mlua::Value::Nil => "nil".to_string(),
-                        mlua::Value::Boolean(b) => b.to_string(),
-                        mlua::Value::LightUserData(_) => {
-                            return Err(mlua::Error::RuntimeError(format!("unable to get string representation of LightUserData")));
-                        },
-                        mlua::Value::Integer(i) => i.to_string(),
-                        mlua::Value::Number(n) => n.to_string(),
-                        mlua::Value::String(s) => s.to_str().unwrap().to_string(),
-                        mlua::Value::Table(_) => {
-                            return Err(mlua::Error::RuntimeError(format!("unable to get string representation of Table")));
-                        },
-                        mlua::Value::Function(_) => {
-                            return Err(mlua::Error::RuntimeError(format!("unable to get string representation of Function")));
-                        },
-                        mlua::Value::Thread(_) => {
-                            return Err(mlua::Error::RuntimeError(format!("unable to get string representation of Thread")));
-                        },
-                        mlua::Value::UserData(ud) => {
-                            if let Ok(tos) = ud.get::<_, mlua::Function>(mlua::MetaMethod::ToString.to_string()) {
-                                tos.call::<_, String>(())?
-                            } else {
-                                return Err(mlua::Error::RuntimeError(format!("UserData does not implement MetaMethod '__tostring'")));
-                            }
-                        },
-                        mlua::Value::Error(e) => e.to_string(),
-                    },
-                    None => {
-                        let got_args = arg_num;// - 1;
-
-                        // continue searching for {} to get the number of format spots for the error message.
-                        while let Some(start) = text.find("{}") {
-                            text = text[start + 2..].to_string();
-                            arg_num += 1;
-                        }
-
-                        return Err(mlua::Error::BadArgument {
-                            to: Some("printf".to_string()),
-                            pos: 2,
-                            name: Some("...".to_string()),
-                            cause: Arc::new(mlua::Error::RuntimeError(format!("not enough args \
-                                given for the amount of format areas in the string. Expected {}, \
-                                got {}.", arg_num, got_args)))
-                        })
-                    },
-                };
-
-                formatted = format!("{}{}{}", formatted, &text[0..start], val_str);
-
-                text = text[start + 2..].to_string();
-
-                arg_num += 1;
-            }
-
-            if arg_num < formats.len() {
-                return Err(mlua::Error::BadArgument {
-                    to: Some("printf".to_string()),
-                    pos: 2,
-                    name: Some("...".to_string()),
-                    cause: Arc::new(mlua::Error::RuntimeError(format!("got more args \
-                        than format areas in the string. Expected {}, got {}.", formats.len(), arg_num)))
-                })
-            }
-            
-            formatted = format!("{}{}", formatted, text);
-
-            lua.globals()
-                .get::<_, mlua::Function>("print")
-                .unwrap()
-                .call::<_, ()>(formatted)
-                .unwrap();
-
-            Ok(())
-        }
-        
-        let printf_func = ctx.create_function(printf).unwrap();
-
-        let globals = ctx.globals();
-        globals.set("printf", printf_func).unwrap();
-        
-        Ok(())
-    }
-
-    fn setup_script(&mut self, _data: &ScriptData, _ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
-        Ok(())
-    }
-
-    fn update_script_environment(&mut self, world: crate::ScriptWorldPtr, _data: &ScriptData, ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
-        let ctx = ctx.lock().unwrap();
-        let globals = ctx.globals();
-
-        let world_lua = world.into_lua(&ctx)
-            .map_err(ScriptError::MluaError)?;
-        globals.set("world", world_lua)
-            .map_err(ScriptError::MluaError)?;
-
-        Ok(())
-    }
-}
-
-/// Tests a simple lua script that just prints some test
-#[test]
-pub fn lua_print() {
-    enable_tracing();
-
-    let mut world = World::new();
-
-    let test_provider = PrintfProvider::default();
-    let mut providers = ScriptApiProviders::<LuaHost>::default();
-    providers.add_provider(test_provider);
-
-    let host = LuaHost::default();
-
-    world.add_resource(host);
-    world.add_resource(providers);
-    world.add_resource(ScriptContexts::<Mutex<mlua::Lua>>::default());
-
-    let mut res_loader = ResourceManager::new();
-    res_loader.register_loader::<LuaLoader>();
-
-    let script =
-        r#"
-            print("Hello World")
-            
-            function update()
-                print("updated")
-                printf("I love to eat formatted {}!", "food")
-                --printf("World is {}", world)
-            end
-        "#;
-    let script = script.as_bytes();
-
-    let script = res_loader.load_bytes::<LuaScript>("test_script.lua", 
-        "text/lua", script.to_vec(), 0, script.len()).unwrap();
-    let script = Script::new("text_script.lua", script);
-    
-    let scripts = ScriptList::new(vec![script]);
-
-    world.spawn((scripts,));
-
-    let mut exec = GraphExecutor::new();
-    exec.insert_system("lua_update_scripts", lua_update_scripts.into_system(), &[]);
-    exec.execute(NonNull::from(&world), true).unwrap();
-}
-
-fn lua_update_scripts(world: &mut World) -> anyhow::Result<()> {
-    let world_ptr = ScriptWorldPtr::from_ref(&world);
-    let mut host = world.get_resource_mut::<LuaHost>();
-    let mut contexts = world.get_resource_mut::<ScriptContexts<Mutex<mlua::Lua>>>();
-    let mut providers = world.get_resource_mut::<ScriptApiProviders<LuaHost>>();
-
-    for scripts in world.view_iter::<&ScriptList<LuaScript>>() {
-        for script in scripts.iter() {
-            let script_data = ScriptData {
-                name: script.name().to_string(),
-                script_id: script.id(),
-            };
-
-            if !contexts.has_context(script.id()) {
-                if let Some(script_res) = &script.res_handle().data {
-                    let mut script_ctx = host.load_script(&script_res.bytes, &script_data, &mut providers).unwrap();
-                    host.setup_script(&script_data, &mut script_ctx, &mut providers).unwrap();
-                    contexts.add_context(script.id(), script_ctx);
-                } else {
-                    debug!("Script '{}' is not yet loaded, skipping", script.name());
-                }
-            }
-
-            let ctx = contexts.get_context_mut(script.id()).unwrap();
-            
-            match host.update_script(world_ptr.clone(), &script_data, ctx, &mut providers) {
-                Ok(()) => {},
-                Err(e) => match e {
-                    ScriptError::MluaError(m) => {
-                        error!("Script '{}' ran into an error: {}", script.name(), m);
-                    },
-                    ScriptError::Other(_) => return Err(e.into()),
-                },
-            }
-        }
-    }
-    
-    Ok(())
-}

lyra-scripting/src/lua/world.rs

@@ -1,22 +1,36 @@
-use lyra_ecs::query::dynamic::QueryDynamicType;
-use lyra_reflect::TypeRegistry;
-use mlua::{AnyUserDataExt, IntoLua, IntoLuaMulti};
+use std::{ptr::NonNull, sync::Arc};
 
-use crate::{ScriptWorldPtr, ScriptEntity, ScriptDynamicBundle, ScriptBorrow};
+use crate::{ScriptBorrow, ScriptEntity, ScriptWorldPtr};
+use elua::AsLua;
+use lyra_ecs::{query::dynamic::QueryDynamicType, CommandQueue, Commands, DynamicBundle, World};
+use lyra_reflect::{ReflectWorldExt, RegisteredType, TypeRegistry};
+use lyra_resource::ResourceManager;
 
-use super::{ReflectedIterator, DynamicViewIter, FN_NAME_INTERNAL_REFLECT_TYPE, reflect_user_data, ReflectLuaProxy};
+use super::{
+    reflect_user_data, wrappers::LuaResHandle, DynamicViewIter, LuaTableProxyLookup, ReflectLuaProxy, ReflectedIterator, FN_NAME_INTERNAL_AS_COMPONENT, FN_NAME_INTERNAL_REFLECT, FN_NAME_INTERNAL_REFLECT_TYPE
+};
 
-impl<'lua> mlua::FromLua<'lua> for ScriptEntity {
-    fn from_lua(value: mlua::Value<'lua>, _lua: &'lua mlua::Lua) -> mlua::Result<Self> {
+impl<'lua> elua::FromLua<'lua> for ScriptEntity {
+    fn from_lua(_: &'lua elua::State, value: elua::Value<'lua>) -> elua::Result<Self> {
         match value {
-            mlua::Value::UserData(ud) => Ok(ud.borrow::<Self>()?.clone()),
-            mlua::Value::Nil => Err(mlua::Error::FromLuaConversionError { from: "Nil", to: "ScriptEntity", message: Some("Value was nil".to_string()) }),
+            elua::Value::Userdata(ud) => Ok(ud.as_ref::<Self>()?.clone()),
+            elua::Value::Nil => Err(elua::Error::type_mismatch("ScriptEntity", "Nil")),
             _ => panic!(),
         }
     }
 }
 
-impl mlua::UserData for ScriptEntity {}
+impl elua::Userdata for ScriptEntity {
+    fn name() -> String {
+        "Entity".to_string()
+    }
+
+    fn build<'a>(builder: &mut elua::userdata::UserdataBuilder<'a, Self>) {
+        builder.meta_method(elua::MetaMethod::ToString, |_, this, ()| {
+            Ok(format!("{:?}", this.0))
+        });
+    }
+}
 
 #[derive(thiserror::Error, Debug, Clone)]
 pub enum WorldError {
@@ -24,108 +38,271 @@ pub enum WorldError {
     LuaInvalidUsage(String),
 }
 
-impl mlua::UserData for ScriptWorldPtr {
-    fn add_methods<'lua, M: mlua::prelude::LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
-        methods.add_method_mut("spawn", |_, this, (bundle,): (ScriptDynamicBundle,)| {
-            let world = unsafe { this.inner.as_mut() };
-            
-            Ok(ScriptEntity(world.spawn(bundle.0)))
-        });
+impl<'a> elua::FromLua<'a> for ScriptWorldPtr {
+    fn from_lua(_: &'a elua::State, val: elua::Value<'a>) -> elua::Result<Self> {
+        match val {
+            elua::Value::Userdata(ud) => Ok(ud.as_ref::<Self>()?.clone()),
+            elua::Value::Nil => Err(elua::Error::type_mismatch("ScriptWorldPtr", "Nil")),
+            _ => panic!(),
+        }
+    }
+}
 
-        methods.add_method("view_iter", |lua, this, queries: mlua::Variadic<mlua::AnyUserData>| {
-            let world = unsafe { this.inner.as_ref() };
-            let mut view = world.dynamic_view();
+impl elua::Userdata for ScriptWorldPtr {
+    fn name() -> String {
+        "World".to_string()
+    }
 
-            for comp in queries.into_iter() {
-                let script_brw = comp.call_function::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT_TYPE, ())
-                    .expect("Type does not implement '__internal_reflect_type' properly");
-                let refl_comp = script_brw.reflect_branch.as_component_unchecked();
+    fn build<'a>(builder: &mut elua::UserdataBuilder<'a, Self>) {
+        builder
+            .method_mut("spawn", |_, this, vals: elua::ValueVec| {
+                let world = this.as_mut();
 
-                let dyn_type =  QueryDynamicType::from_info(refl_comp.info);
-                view.push(dyn_type);
-            }
+                let mut bundle = DynamicBundle::new();
 
-            let iter = view.into_iter();
-            let mut reflected_iter = ReflectedIterator {
-                world: this.clone(),
-                dyn_view: DynamicViewIter::from(iter),
-                reflected_components: None,
-            };
+                //while let Some(val) = vals.pop_front() {
+                for (i, val) in vals.into_iter().enumerate() {
+                    let ud = val.as_userdata().ok_or(
+                        elua::Error::bad_arg(
+                            Some("World:spawn"),
+                            2 + i as i32, // i starts at 0
+                            Some("components..."),
+                            Arc::new(elua::Error::runtime("provided component is not userdata")),
+                        ))?;
+                    
+                    let comp_borrow = {
+                        if let Ok(as_comp) = ud.get::<_, elua::Function>(FN_NAME_INTERNAL_AS_COMPONENT) {
+                            let ud = match as_comp.exec(ud.clone())? {
+                                elua::Value::Userdata(ud) => ud,
+                                elua::Value::Nil => ud.clone(),
+                                _ => todo!(),
+                            };
 
-            let f = lua.create_function_mut(move |lua, ()| {
-                if let Some(row) = reflected_iter.next_lua(lua) {
-                    let row = row.into_iter().map(|(_, ud)| ud.into_lua(lua))
-                        .collect::<mlua::Result<Vec<mlua::Value>>>()?;
-                    Ok(mlua::MultiValue::from_vec(row))
-                } else {
-                    Ok(mlua::Value::Nil.into_lua_multi(lua)?)
+                            ud.execute_method::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT, ())?
+                        } else {
+                            ud.execute_method::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT, ())?
+                        }
+                    };
+
+                    let reflect = comp_borrow.reflect_branch.as_component_unchecked();
+                    let refl_data = comp_borrow.data.unwrap();
+                    reflect.bundle_insert(&mut bundle, refl_data);
                 }
-            })?;
 
-            Ok(f)
-        });
+                // defer the entity spawn
+                // safety: Commands borrows Entities from World, the resource borrows from the world resouces,
+                // they are borrowing different parts of World.
+                let world_ptr: *mut World = world;
+                let mut commands_queue = world.get_resource_mut::<CommandQueue>();
+                let mut commands = Commands::new(&mut commands_queue, unsafe { &mut *world_ptr });
+                let entity = commands.spawn(bundle);
 
-        methods.add_method("view", |lua, this, (system, queries): (mlua::Function, mlua::Variadic<mlua::AnyUserData>)| {
-            if queries.is_empty() {
-                panic!("No components were provided!");
-            }
-            
-            let world = unsafe { this.inner.as_ref() };
-            let mut view = world.dynamic_view();
+                Ok(ScriptEntity(entity))
+            })
+            .method_mut(
+                "view",
+                |lua, this, (system, queries): (elua::Function, elua::ValueVec)| {
+                    if queries.is_empty() {
+                        return Err(elua::Error::BadArgument {
+                            func: Some("World:view".to_string()),
+                            arg_index: 2,
+                            arg_name: Some("query...".to_string()),
+                            error: Arc::new(elua::Error::other(WorldError::LuaInvalidUsage(
+                                "no component types provided".to_string(),
+                            ))),
+                        });
+                    }
 
-            for comp in queries.into_iter() {
-                let reflect = comp.call_function::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT_TYPE, ())
-                    .expect("Type does not implement 'reflect_type' properly");
-                let refl_comp = reflect.reflect_branch.as_component_unchecked();
+                    let world = unsafe { this.inner.as_ref() };
+                    let mut view = world.dynamic_view();
 
-                let dyn_type =  QueryDynamicType::from_info(refl_comp.info);
-                view.push(dyn_type);
-            }
+                    for (idx, comp) in queries.into_iter().enumerate() {
+                        match comp {
+                            elua::Value::Table(t) => {
+                                let name: String = t.get(elua::MetaMethod::Name)?;
 
-            let iter = view.into_iter();
-            let mut reflected_iter = ReflectedIterator {
-                world: this.clone(),
-                dyn_view: DynamicViewIter::from(iter),
-                reflected_components: None,
-            };
+                                let lookup = world
+                                    .try_get_resource::<LuaTableProxyLookup>()
+                                    .ok_or(elua::Error::runtime(
+                                        "Unable to lookup table proxy, none were ever registered!",
+                                    ))?;
+                                let info = lookup.comp_info_from_name.get(&name).ok_or_else(
+                                    || elua::Error::BadArgument {
+                                        func: Some("World:view".to_string()),
+                                        arg_index: 2 + idx as i32,
+                                        arg_name: Some("query...".to_string()),
+                                        error: Arc::new(elua::Error::Runtime(format!(
+                                            "the 'Table' with name {} is unknown to the engine!",
+                                            name
+                                        ))),
+                                    },
+                                )?;
 
-            let reg = this.as_ref().get_resource::<TypeRegistry>();
-
-            while let Some(row) = reflected_iter.next_lua(lua) {
-                let (reflects, values): (Vec<(_, _)>, Vec<_>) = row.into_iter().unzip();
-
-                let value_row: Vec<_> = values.into_iter().map(|ud| ud.into_lua(lua)).collect::<mlua::Result<Vec<mlua::Value>>>()?;
-                let mult_val = mlua::MultiValue::from_vec(value_row);
-                let res: mlua::MultiValue = system.call(mult_val)?;
-
-                // if values were returned, find the type in the type registry, and apply the new values
-                if res.len() <= reflects.len() {
-                    for (i, comp) in res.into_iter().enumerate() {
-                        let (_proxy, ptr) = reflects[i];
-
-                        match comp.as_userdata() {
-                            Some(ud) => {
-                                let lua_comp = reflect_user_data(ud);
-                                let refl_comp = lua_comp.reflect_branch.as_component_unchecked();
-                                let lua_typeid = refl_comp.info.type_id.as_rust();
-                                let reg_type = reg.get_type(lua_typeid).unwrap();
-
-                                let proxy = reg_type.get_data::<ReflectLuaProxy>().unwrap();
-                                (proxy.fn_apply)(lua, ptr, ud)?
+                                let dyn_type = QueryDynamicType::from_info(info.clone());
+                                view.push(dyn_type);
                             }
-                            None => {
-                                panic!("A userdata value was not returned!");
+                            elua::Value::Userdata(ud) => {
+                                let reflect = ud
+                                    .execute_function::<_, ScriptBorrow>(
+                                        FN_NAME_INTERNAL_REFLECT_TYPE,
+                                        (),
+                                    )
+                                    .expect("Type does not implement 'reflect_type' properly");
+                                let refl_comp = reflect.reflect_branch.as_component_unchecked();
+
+                                let dyn_type = QueryDynamicType::from_info(refl_comp.info);
+                                view.push(dyn_type);
                             }
+                            _ => todo!(),
                         }
                     }
-                } else {
-                    let msg = format!("Too many arguments were returned from the World view!
-                        At most, the expected number of results is {}.", reflects.len());
-                    return Err(mlua::Error::external(WorldError::LuaInvalidUsage(msg)));
-                }
-            }
 
-            Ok(())
-        });
+                    let iter = view.into_iter();
+                    let mut reflected_iter = ReflectedIterator {
+                        world: this.clone(),
+                        dyn_view: DynamicViewIter::from(iter),
+                        reflected_components: None,
+                    };
+
+                    let mut current = world.current_tick();
+                    let mut has_ticked = false;
+
+                    while let Some(row) = reflected_iter.next_lua(lua) {
+                        let r = row
+                            .row
+                            .into_iter()
+                            .map(|r| (r.comp_val, r.comp_ptr.cast::<()>()))
+                            .collect::<Vec<_>>();
+                        let (values, ptrs) =
+                            itertools::multiunzip::<(Vec<elua::Value>, Vec<NonNull<()>>), _>(r);
+                        let mult_val = elua::ValueVec::from(values);
+                        let res: elua::ValueVec = system.exec(mult_val)?;
+
+                        // if values were returned, find the type in the type registry, and apply the new values
+                        if res.len() <= ptrs.len() {
+                            // we only want to tick one time per system
+                            if !has_ticked {
+                                current = world.tick();
+                                has_ticked = true;
+                            }
+
+                            for (comp, ptr) in res.into_iter().zip(ptrs) {
+                                let lua_typeid = match &comp {
+                                    elua::Value::Userdata(ud) => {
+                                        let lua_comp = reflect_user_data(ud);
+                                        let refl_comp =
+                                            lua_comp.reflect_branch.as_component_unchecked();
+                                        refl_comp.info.type_id.as_rust()
+                                    }
+                                    elua::Value::Table(tbl) => {
+                                        let name: String = tbl.get(elua::MetaMethod::Name)?;
+
+                                        let lookup = world.get_resource::<LuaTableProxyLookup>();
+                                        *lookup.typeid_from_name.get(&name).unwrap()
+                                    }
+                                    _ => {
+                                        panic!("A userdata or table value was not returned!");
+                                        // TODO: Handle properly
+                                    }
+                                };
+
+                                // update the component tick
+                                let world = unsafe { this.inner.as_mut() };
+                                let arch = world.entity_archetype_mut(row.entity).unwrap();
+                                let idx = arch.entities().get(&row.entity).unwrap().clone();
+                                let c = arch.get_column_mut(lua_typeid.into()).unwrap();
+                                c.entity_ticks[idx.0 as usize] = current;
+
+                                // apply the new component data
+                                let reg = this.as_ref().get_resource::<TypeRegistry>();
+                                let reg_type = reg.get_type(lua_typeid).unwrap();
+
+                                let proxy = reg_type
+                                    .get_data::<ReflectLuaProxy>()
+                                    // this should actually be safe since the ReflectedIterator
+                                    // attempts to get the type data before it is tried here
+                                    .expect("Type does not have ReflectLuaProxy as a TypeData");
+                                (proxy.fn_apply)(lua, ptr, &comp)?;
+                            }
+                        } else {
+                            let msg = format!(
+                                "Too many arguments were returned from the World view!
+                            At most, the expected number of results is {}.",
+                                ptrs.len()
+                            );
+                            return Err(elua::Error::Runtime(msg));
+                        }
+                    }
+
+                    Ok(())
+                },
+            )
+            .method_mut("resource", |lua, this, (ty,): (elua::Value,)| {
+                let reflect = match ty {
+                    elua::Value::Userdata(ud) => ud
+                        .execute_function::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT_TYPE, ())
+                        .expect("Type does not implement 'reflect_type' properly"),
+                    elua::Value::Table(t) => {
+                        let f: elua::Function = t.get(FN_NAME_INTERNAL_REFLECT_TYPE)?;
+                        f.exec::<_, ScriptBorrow>(())
+                            .expect("Type does not implement 'reflect_type' properly")
+                    }
+                    _ => {
+                        panic!("how");
+                    }
+                };
+                /* let reflect = ty
+                .execute_function::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT_TYPE, ())
+                .expect("Type does not implement 'reflect_type' properly"); */
+
+                let res = reflect.reflect_branch.as_resource_unchecked();
+                if let Some(res_ptr) = res.reflect_ptr(this.as_mut()) {
+                    let reg_type = this
+                        .as_ref()
+                        .get_type::<RegisteredType>(reflect.reflect_branch.reflect_type_id())
+                        .expect("Resource is not type registered!");
+                    let proxy = reg_type
+                        .get_data::<ReflectLuaProxy>()
+                        .expect("Type does not have ReflectLuaProxy as a TypeData");
+
+                    (proxy.fn_as_lua)(lua, res_ptr.cast()).and_then(|ud| ud.as_lua(lua))
+                } else {
+                    // if the resource is not found in the world, return nil
+                    Ok(elua::Value::Nil)
+                }
+            })
+            .method_mut("add_resource", |_, this, res: elua::Value| {
+                let reflect = match res {
+                    elua::Value::Userdata(ud) => ud
+                        .execute_method::<_, ScriptBorrow>(FN_NAME_INTERNAL_REFLECT, ())
+                        .expect("Type does not implement 'reflect_type' properly"),
+                    elua::Value::Table(t) => {
+                        let f: elua::Function = t.get(FN_NAME_INTERNAL_REFLECT)?;
+                        f.exec::<_, ScriptBorrow>(())
+                            .expect("Type does not implement 'reflect_type' properly")
+                    }
+                    _ => {
+                        panic!("how");
+                    }
+                };
+
+                let data = reflect.data
+                    .expect("Its expected that 'FN_NAME_INTERNAL_REFLECT' returns data in World:add_resource");
+
+                let res = reflect.reflect_branch.as_resource()
+                    .ok_or(elua::Error::runtime("Provided type is not a resource!"))?;
+
+                let world = this.as_mut();
+                res.insert(world, data);
+
+                Ok(())
+            })
+            .method_mut("request_res", |_, this, path: String| {
+                let world = this.as_mut();
+                let mut man = world.get_resource_mut::<ResourceManager>();
+                let handle = man.request_raw(&path).unwrap();
+
+                Ok(LuaResHandle::from(handle))
+            });
     }
-}
+}

lyra-scripting/src/lua/wrappers/delta_time.rs

@@ -0,0 +1,40 @@
+
+use std::any::TypeId;
+
+use lyra_game::DeltaTime;
+use crate::lua::LuaWrapper;
+
+#[derive(Clone, Default)]
+pub struct LuaDeltaTime(pub(crate) DeltaTime);
+
+impl std::ops::Deref for LuaDeltaTime {
+    type Target = DeltaTime;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl std::ops::DerefMut for LuaDeltaTime {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl<'lua> elua::FromLua<'lua> for LuaDeltaTime {
+    fn from_lua(_: &'lua elua::State, _: elua::Value<'lua>) -> elua::Result<Self> {
+        todo!()
+    }
+}
+
+impl<'lua> elua::AsLua<'lua> for LuaDeltaTime {
+    fn as_lua(self, _: &'lua elua::State) -> elua::Result<elua::Value<'lua>> {
+        Ok(elua::Value::Number(*self.0 as f64))
+    }
+}
+
+impl LuaWrapper for LuaDeltaTime {
+    fn wrapped_type_id() -> std::any::TypeId {
+        TypeId::of::<DeltaTime>()
+    }
+} 

lyra-scripting/src/lua/wrappers/input_actions.rs

@@ -0,0 +1,185 @@
+use lyra_game::input::{keycode_from_str, Action, ActionHandler, ActionKind, ActionMapping, ActionMappingId, ActionSource, ActionState, LayoutId, MouseAxis, MouseInput};
+use crate::lyra_engine;
+
+use lyra_reflect::Reflect;
+
+use crate::{lua::{LuaWrapper, FN_NAME_INTERNAL_REFLECT, FN_NAME_INTERNAL_REFLECT_TYPE}, ScriptBorrow};
+
+#[derive(Clone, Reflect)]
+pub struct LuaActionHandler {
+    handler: ActionHandler
+}
+
+impl elua::Userdata for LuaActionHandler {
+    fn name() -> String {
+        "ActionHandler".to_string()
+    }
+
+    fn build<'a>(builder: &mut elua::UserdataBuilder<'a, Self>) {
+        builder.function("new", |_, table: elua::Table| {
+            let mut handler = ActionHandler::new();
+
+            // create the layouts and add them to the handler
+            let layouts = table.get::<_, elua::Table>("layouts")
+                .map_err(|_| elua::Error::runtime("missing 'layouts' in ActionHandler table"))?;
+            for layout_id in layouts.sequence_iter::<u32>() {
+                let layout_id = layout_id?;
+
+                handler.add_layout(LayoutId(layout_id));
+            }
+
+            // add the actions to the handler
+            let actions = table.get::<_, elua::Table>("actions")
+                .map_err(|_| elua::Error::runtime("missing 'actions' in ActionHandler table"))?;
+            for pair in actions.pairs::<String, String>() {
+                let (action_lbl, action_type) = pair?;
+                let action_type = action_type.to_lowercase();
+
+                let action_type = match action_type.as_str() {
+                    "axis" => ActionKind::Axis,
+                    "button" => ActionKind::Button,
+                    _ => todo!("Handle invalid axis type"),
+                };
+
+                handler.add_action(action_lbl, Action::new(action_type));
+            }
+
+            // find the mappings and start processing them
+            let mappings= table.get::<_, elua::Table>("mappings")
+                .map_err(|_| elua::Error::runtime("missing 'mappings' in ActionHandler table"))?;
+            for (map_id, tbl) in mappings.sequence_iter::<elua::Table>().enumerate() {
+                let tbl = tbl?;
+                
+                let layout_id = tbl.get::<_, u32>("layout")?;
+                let mut mapping = ActionMapping::new(LayoutId(layout_id), ActionMappingId(map_id as u32));
+
+                // find the binds and start processing them
+                // the keys are used as the action names, and then the value is an array (lua table)
+                let binds_tbl = tbl.get::<_, elua::Table>("binds")
+                    .map_err(|_| elua::Error::runtime("missing 'binds' in ActionHandler 'mappings' table"))?;
+                for pair in binds_tbl.pairs::<String, elua::Table>() {
+                    let (action_lbl, input_binds) = pair?;
+
+                    for input in input_binds.sequence_iter::<String>() {
+                        let input = input?.to_lowercase();
+                        
+                        let action = handler.action(&action_lbl)
+                            .ok_or(elua::Error::Runtime(format!("Unknown action specified in mapping binds: {}", action_lbl)))?;
+                        
+                        let mut binds = Vec::new();
+
+                        let input_split: Vec<&str> = input.split(":").collect();
+                        let input_name = input_split[0];
+                        let button = input_split[1];
+
+                        if action.kind == ActionKind::Axis {
+                            if button == "axis" {
+                                let axis_name = input_split[2];
+
+                                let src = process_axis_string(input_name, axis_name)
+                                    .ok_or(elua::Error::Runtime(format!("invalid bind '{input_name}', unable to find device or axis for device")))?;
+                                binds.push(src.into_binding());
+                            } else {
+                                // splits 'down=1' into 'down' and '1'
+                                let (button, val_str) = button.split_once("=")
+                                    .ok_or(elua::Error::Runtime(format!("invalid bind string for Axis Action: '{input}' (expected '=' with float)")))?;
+
+                                let val = val_str.parse::<f32>()
+                                    .map_err(|e| elua::Error::Runtime(format!("invalid bind string for Axis Action: '{input}' ({e})")))?;
+                                
+                                let src = process_keyboard_string(button)
+                                    .ok_or(elua::Error::Runtime(format!("invalid key in bind: '{button}'")))?;
+                                binds.push(src.into_binding_modifier(val));
+                            }
+                        } else {
+                            todo!("Process bindings for Button Actions");
+                        }
+
+                        mapping.bind(action_lbl.clone(), &binds);
+                    }
+                }
+                
+                handler.add_mapping(mapping);
+            }
+
+            Ok(LuaActionHandler {
+                handler,
+            })
+        })
+        .method("get_axis", |_, this, action: String| {
+            Ok(this.handler.get_axis_modifier(action))
+        })
+        .method("is_pressed", |_, this, action: String| {
+            Ok(this.handler.is_action_pressed(action))
+        })
+        .method("was_just_pressed", |_, this, action: String| {
+            Ok(this.handler.was_action_just_pressed(action))
+        })
+        .method("was_just_released", |_, this, action: String| {
+            Ok(this.handler.was_action_just_released(action))
+        })
+        .method("get_just_pressed", |_, this, action: String| {
+            Ok(this.handler.get_just_pressed_modifier(action))
+        })
+        .method("get_action_state", |lua, this, action: String| {
+            let state = this.handler.get_action_state(action);
+
+            let (name, val) = match state {
+                ActionState::Idle => ("Idle", None),
+                ActionState::Pressed(v) => ("Pressed", Some(v)),
+                ActionState::JustPressed(v) => ("JustPressed", Some(v)),
+                ActionState::JustReleased => ("JustReleased", None),
+                ActionState::Axis(v) => ("Axis", Some(v)),
+                ActionState::Other(v) => ("Other", Some(v)),
+            };
+
+            let mut multi = elua::ValueVec::new();
+            multi.push_val(lua, name)?;
+            multi.push_val(lua, val)?;
+            
+            Ok(elua::Value::Multi(multi))
+        })
+        .method(FN_NAME_INTERNAL_REFLECT, |_, this, ()| {
+            Ok(ScriptBorrow::from_resource::<ActionHandler>(Some(this.handler.clone())))
+        })
+        .function(FN_NAME_INTERNAL_REFLECT_TYPE, |_, ()| {
+            Ok(ScriptBorrow::from_resource::<ActionHandler>(None))
+        });
+
+    }
+}
+
+impl<'a> elua::FromLua<'a> for LuaActionHandler {
+    fn from_lua(_: &'a elua::State, val: elua::Value<'a>) -> elua::Result<Self> {
+        let tyname = val.type_name();
+        let ud = val.as_userdata()
+            .ok_or(elua::Error::type_mismatch("ActionHandler", &tyname))?;
+        let handle = ud.as_ref::<LuaActionHandler>()?;
+        
+        Ok(handle.clone())
+    }
+}
+
+impl LuaWrapper for LuaActionHandler {
+    fn wrapped_type_id() -> std::any::TypeId {
+        std::any::TypeId::of::<ActionHandler>()
+    }
+}
+
+fn process_keyboard_string(key_name: &str) -> Option<ActionSource> {
+    let key = keycode_from_str(key_name)?;
+    
+    Some(ActionSource::Keyboard(key))
+}
+
+fn process_axis_string(device: &str, axis_name: &str) -> Option<ActionSource> {
+    match device {
+        "mouse" => match axis_name {
+            "y" => Some(ActionSource::Mouse(MouseInput::Axis(MouseAxis::Y))),
+            "x" => Some(ActionSource::Mouse(MouseInput::Axis(MouseAxis::X))),
+            "scroll" | "scrollwheel" => Some(ActionSource::Mouse(MouseInput::Axis(MouseAxis::ScrollWheel))),
+            _ => None,
+        },
+        _ => None
+    }
+}

lyra-scripting/src/lua/wrappers/math.rs

@@ -0,0 +1,649 @@
+use std::sync::Arc;
+
+use crate::lyra_engine;
+use lyra_game::math;
+use lyra_scripting_derive::wrap_math_vec_copy;
+
+use crate as lyra_scripting;
+
+// f32 types
+wrap_math_vec_copy!(
+    math::Vec2,
+    derives(PartialEq),
+    fields(x, y),
+    metamethods(
+        Add(LuaVec2, f32),
+        Sub(LuaVec2, f32),
+        Div(LuaVec2, f32),
+        Mul(LuaVec2, f32),
+        Mod(LuaVec2, f32),
+        Eq, Unm, ToString
+    ),
+    custom_methods {
+        builder.method_mut("move_by", |lua, this, vals: elua::ValueVec| {
+            let vals_clone = vals.clone();
+            if let Some((x, y)) = vals.try_into_vals::<(f32, f32)>(lua)? {
+                this.x += x;
+                this.y += y;
+            } else if let Some(v) = vals_clone.try_into_vals::<Self>(lua)? {
+                this.0 += v.0;
+            }
+
+            Ok(())
+        });
+    }
+);
+wrap_math_vec_copy!(
+    math::Vec3,
+    derives(PartialEq),
+    fields(x, y, z),
+    metamethods(
+        Add(LuaVec3, f32),
+        Sub(LuaVec3, f32),
+        Div(LuaVec3, f32),
+        Mul(LuaVec3, f32),
+        Mod(LuaVec3, f32),
+        Eq, Unm, ToString
+    ),
+    custom_methods {
+        builder.method_mut("move_by", |lua, this, vals: elua::ValueVec| {
+            let vals_clone = vals.clone();
+            if let Some((x, y, z)) = vals.try_into_vals::<(f32, f32, f32)>(lua)? {
+                this.x += x;
+                this.y += y;
+                this.z += z;
+            } else if let Some(v) = vals_clone.try_into_vals::<Self>(lua)? {
+                this.0 += v.0;
+            }
+
+            Ok(())
+        });
+    }
+);
+
+wrap_math_vec_copy!(
+    math::Vec4,
+    derives(PartialEq),
+    fields(w, x, y, z),
+    metamethods(
+        Add(LuaVec4, f32),
+        Sub(LuaVec4, f32),
+        Div(LuaVec4, f32),
+        Mul(LuaVec4, f32),
+        Mod(LuaVec4, f32),
+        Eq, Unm
+    )
+);
+
+// =================================================
+
+
+/* wrap_math_vec_copy!(
+    math::Vec3A,
+    derives(PartialEq),
+    fields(x, y, z),
+    metamethods(
+        Add(LuaVec3A, f32),
+        Sub(LuaVec3A, f32),
+        Div(LuaVec3A, f32),
+        Mul(LuaVec3A, f32),
+        Mod(LuaVec3A, f32),
+        Eq, Unm
+    )
+);
+
+
+// f64 types
+wrap_math_vec_copy!(
+    math::DVec2,
+    derives(PartialEq),
+    fields(x, y),
+    metamethods(
+        Add(LuaDVec2, f64),
+        Sub(LuaDVec2, f64),
+        Div(LuaDVec2, f64),
+        Mul(LuaDVec2, f64),
+        Mod(LuaDVec2, f64),
+        Eq, Unm
+    )
+);
+wrap_math_vec_copy!(
+    math::DVec3,
+    derives(PartialEq),
+    fields(x, y, z),
+    metamethods(
+        Add(LuaDVec3, f64),
+        Sub(LuaDVec3, f64),
+        Div(LuaDVec3, f64),
+        Mul(LuaDVec3, f64),
+        Mod(LuaDVec3, f64),
+        Eq, Unm
+    )
+);
+wrap_math_vec_copy!(
+    math::DVec4,
+    derives(PartialEq),
+    fields(w, x, y, z),
+    metamethods(
+        Add(LuaDVec4, f64),
+        Sub(LuaDVec4, f64),
+        Div(LuaDVec4, f64),
+        Mul(LuaDVec4, f64),
+        Mod(LuaDVec4, f64),
+        Eq, Unm
+    )
+);
+
+// i32 types
+wrap_math_vec_copy!(
+    math::IVec2,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y),
+    metamethods(
+        Add(LuaIVec2, i32),
+        Sub(LuaIVec2, i32),
+        Div(LuaIVec2, i32),
+        Mul(LuaIVec2, i32),
+        Mod(LuaIVec2, i32),
+        Shl(LuaIVec2, LuaUVec2, i32),
+        Shr(LuaIVec2, LuaUVec2, i32),
+        BAnd(LuaIVec2, i32),
+        BOr(LuaIVec2, i32),
+        BXor(LuaIVec2, i32),
+        Eq, Unm, BNot
+    )
+);
+wrap_math_vec_copy!(
+    math::IVec3,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y, z),
+    metamethods(
+        Add(LuaIVec3, i32),
+        Sub(LuaIVec3, i32),
+        Div(LuaIVec3, i32),
+        Mul(LuaIVec3, i32),
+        Mod(LuaIVec3, i32),
+        Shl(LuaIVec3, LuaUVec3, i32),
+        Shr(LuaIVec3, LuaUVec3, i32),
+        BAnd(LuaIVec3, i32),
+        BOr(LuaIVec3, i32),
+        BXor(LuaIVec3, i32),
+        Eq, Unm, BNot
+    )
+);
+wrap_math_vec_copy!(
+    math::IVec4,
+    derives(PartialEq, Eq, Hash),
+    fields(w, x, y, z),
+    metamethods(
+        Add(LuaIVec4, i32),
+        Sub(LuaIVec4, i32),
+        Div(LuaIVec4, i32),
+        Mul(LuaIVec4, i32),
+        Mod(LuaIVec4, i32),
+        Shl(LuaIVec4, LuaUVec4, i32),
+        Shr(LuaIVec4, LuaUVec4, i32),
+        BAnd(LuaIVec4, i32),
+        BOr(LuaIVec4, i32),
+        BXor(LuaIVec4, i32),
+        Eq, Unm, BNot
+    )
+);
+
+// u32 types
+wrap_math_vec_copy!(
+    math::UVec2,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y),
+    metamethods(
+        Add(LuaUVec2, u32),
+        Sub(LuaUVec2, u32),
+        Div(LuaUVec2, u32),
+        Mul(LuaUVec2, u32),
+        Mod(LuaUVec2, u32),
+        Shl(LuaUVec2, LuaIVec2, i32),
+        Shr(LuaUVec2, LuaIVec2, i32),
+        BAnd(LuaUVec2, u32),
+        BOr(LuaUVec2, u32),
+        BXor(LuaUVec2, u32),
+        Eq, BNot
+    )
+);
+wrap_math_vec_copy!(
+    math::UVec3,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y, z),
+    metamethods(
+        Add(LuaUVec3, u32),
+        Sub(LuaUVec3, u32),
+        Div(LuaUVec3, u32),
+        Mul(LuaUVec3, u32),
+        Mod(LuaUVec3, u32),
+        Shl(LuaUVec3, LuaIVec3, i32),
+        Shr(LuaUVec3, LuaIVec3, i32),
+        BAnd(LuaUVec3, u32),
+        BOr(LuaUVec3, u32),
+        BXor(LuaUVec3, u32),
+        Eq, BNot
+    )
+);
+wrap_math_vec_copy!(
+    math::UVec4,
+    derives(PartialEq, Eq, Hash),
+    fields(w, x, y, z),
+    metamethods(
+        Add(LuaUVec4, u32),
+        Sub(LuaUVec4, u32),
+        Div(LuaUVec4, u32),
+        Mul(LuaUVec4, u32),
+        Mod(LuaUVec4, u32),
+        Shl(LuaUVec4, LuaIVec4, i32),
+        Shr(LuaUVec4, LuaIVec4, i32),
+        BAnd(LuaUVec4, u32),
+        BOr(LuaUVec4, u32),
+        BXor(LuaUVec4, u32),
+        Eq, BNot
+    )
+);
+
+// i64 types
+wrap_math_vec_copy!(
+    math::I64Vec2,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y),
+    metamethods(
+        Add(LuaI64Vec2, i64),
+        Sub(LuaI64Vec2, i64),
+        Div(LuaI64Vec2, i64),
+        Mul(LuaI64Vec2, i64),
+        Mod(LuaI64Vec2, i64),
+        Shl(i64),
+        Shr(i64),
+        BAnd(LuaI64Vec2, i64),
+        BOr(LuaI64Vec2, i64),
+        BXor(LuaI64Vec2, i64),
+        Eq, BNot
+    )
+);
+wrap_math_vec_copy!(
+    math::I64Vec3,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y, z),
+    metamethods(
+        Add(LuaI64Vec3, i64),
+        Sub(LuaI64Vec3, i64),
+        Div(LuaI64Vec3, i64),
+        Mul(LuaI64Vec3, i64),
+        Mod(LuaI64Vec3, i64),
+        Shl(i64),
+        Shr(i64),
+        BAnd(LuaI64Vec3, i64),
+        BOr(LuaI64Vec3, i64),
+        BXor(LuaI64Vec3, i64),
+        Eq, BNot
+    )
+);
+wrap_math_vec_copy!(
+    math::I64Vec4,
+    derives(PartialEq, Eq, Hash),
+    fields(w, x, y, z),
+    metamethods(
+        Add(LuaI64Vec4, i64),
+        Sub(LuaI64Vec4, i64),
+        Div(LuaI64Vec4, i64),
+        Mul(LuaI64Vec4, i64),
+        Mod(LuaI64Vec4, i64),
+        Shl(i64),
+        Shr(i64),
+        BAnd(LuaI64Vec4, i64),
+        BOr(LuaI64Vec4, i64),
+        BXor(LuaI64Vec4, i64),
+        Eq, BNot
+    )
+);
+
+// u64 types
+wrap_math_vec_copy!(
+    math::U64Vec2,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y),
+    metamethods(
+        Add(LuaU64Vec2, u64),
+        Sub(LuaU64Vec2, u64),
+        Div(LuaU64Vec2, u64),
+        Mul(LuaU64Vec2, u64),
+        Mod(LuaU64Vec2, u64),
+        Shl(i64),
+        Shr(i64),
+        BAnd(LuaU64Vec2, u64),
+        BOr(LuaU64Vec2, u64),
+        BXor(LuaU64Vec2, u64),
+        Eq, BNot
+    )
+);
+wrap_math_vec_copy!(
+    math::U64Vec3,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y, z),
+    metamethods(
+        Add(LuaU64Vec3, u64),
+        Sub(LuaU64Vec3, u64),
+        Div(LuaU64Vec3, u64),
+        Mul(LuaU64Vec3, u64),
+        Mod(LuaU64Vec3, u64),
+        Shl(i64),
+        Shr(i64),
+        BAnd(LuaU64Vec3, u64),
+        BOr(LuaU64Vec3, u64),
+        BXor(LuaU64Vec3, u64),
+        Eq, BNot
+    )
+);
+wrap_math_vec_copy!(
+    math::U64Vec4,
+    derives(PartialEq, Eq, Hash),
+    fields(w, x, y, z),
+    metamethods(
+        Add(LuaU64Vec4, u64),
+        Sub(LuaU64Vec4, u64),
+        Div(LuaU64Vec4, u64),
+        Mul(LuaU64Vec4, u64),
+        Mod(LuaU64Vec4, u64),
+        Shl(i64),
+        Shr(i64),
+        BAnd(LuaU64Vec4, u64),
+        BOr(LuaU64Vec4, u64),
+        BXor(LuaU64Vec4, u64),
+        Eq, BNot
+    )
+);*/
+
+// bool types
+/* wrap_math_vec_copy!(
+    math::BVec2,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y),
+    metamethods(Eq, BAnd, BOr, BXOr, BNot)
+);
+wrap_math_vec_copy!(
+    math::BVec3,
+    derives(PartialEq, Eq, Hash),
+    fields(x, y, z),
+    metamethods(Eq, BAnd, BOr, BXOr, BNot)
+);
+wrap_math_vec_copy!(
+    math::BVec4,
+    derives(PartialEq, Eq, Hash),
+    fields(w, x, y, z),
+    metamethods(Eq, BAnd, BOr, BXOr, BNot)
+); */
+
+// mat2
+/* wrap_math_vec_copy!(
+    math::Mat2,
+    derives(PartialEq),
+    no_new,
+    matrix {
+        col_type = LuaVec2
+    },
+    metamethods(
+        Eq,
+        Add,
+        Sub,
+        Mul(LuaMat2, f32),
+        Unm
+    )
+); */
+
+// TODO
+/* wrap_math_vec_copy!(
+    math::Mat4,
+    derives(PartialEq),
+    no_new,
+    matrix {
+        col_type = LuaVec4
+    },
+    metamethods(
+        Eq,
+        Add,
+        Sub,
+        Mul(LuaMat4, f32),
+        Unm
+    )
+); */
+
+
+
+
+
+
+// ============================================================
+
+
+
+/// A macro that generates field getters and setters for lua wrapped types.
+macro_rules! wrapped_field_getsetters {
+    ($builder: ident, $name: literal, $field: ident, $type: ident) => {
+        $builder.field_getter($name, |_, this| {
+            Ok($type(this.$field))
+        });
+        $builder.field_setter($name, |_, this, v: $type| {
+            this.$field = *v;
+            Ok(())
+        });
+    };
+}
+
+/// A macro that generates field getters and setters for types that already implement As/FromLua.
+macro_rules! field_getsetters {
+    ($builder: ident, $name: literal, $field: ident, $type: ty) => {
+        $builder.field_getter($name, |_, this| {
+            Ok(this.$field)
+        });
+        $builder.field_setter($name, |_, this, v: $type| {
+            this.$field = v;
+            Ok(())
+        });
+    };
+}
+
+
+wrap_math_vec_copy!(
+    math::Quat,
+    derives(PartialEq),
+    no_new,
+    metamethods(
+        Eq,
+        // __mul for LuaVec3 is manually implemented below since it doesn't return Self
+        //Mul(LuaQuat, f32),
+        Add,
+        Sub,
+        Div(f32),
+    ),
+    custom_fields {
+        field_getsetters!(builder, "x", x, f32);
+        field_getsetters!(builder, "y", y, f32);
+        field_getsetters!(builder, "z", z, f32);
+        field_getsetters!(builder, "w", w, f32);
+    },
+    custom_methods {
+        // manually implemented since Quat doesn't have a `new` function
+        builder.function("new", |_, (x, y, z, w)| {
+            Ok(Self(math::Quat::from_xyzw(x, y, z, w)))
+        });
+
+        builder.function("from_rotation_x", |_, (rad,)| {
+            let q = math::Quat::from_rotation_x(rad);
+            Ok(Self(q))
+        });
+
+        builder.function("from_rotation_y", |_, (rad,)| {
+            let q = math::Quat::from_rotation_y(rad);
+            Ok(Self(q))
+        });
+
+        builder.function("from_rotation_z", |_, (rad,)| {
+            let q = math::Quat::from_rotation_z(rad);
+            Ok(Self(q))
+        });
+
+        builder.method("dot", |_, this, (rhs,): (Self,)| {
+            Ok(this.dot(rhs.0))
+        });
+
+        builder.method("length", |_, this, ()| {
+            Ok(this.length())
+        });
+
+        builder.method("length_squared", |_, this, ()| {
+            Ok(this.length_squared())
+        });
+
+        builder.method_mut("normalize", |_, this, ()| {
+            this.0 = this.normalize();
+            Ok(())
+        });
+
+        builder.method_mut("mult_quat", |_, this, (rhs,): (Self,)| {
+            this.0 *= rhs.0;
+            Ok(())
+        });
+
+        builder.method("mult_vec3", |_, this, (rhs,): (LuaVec3,)| {
+            Ok(LuaVec3(this.0 * rhs.0))
+        });
+
+        // manually implemented here since multiplying may not return `Self`.
+        builder.meta_method(elua::MetaMethod::Mul, |lua, this, (val,): (elua::Value,)| {
+            use elua::AsLua;
+
+            match val {
+                elua::Value::Userdata(ud) => {
+                    if ud.is::<LuaVec3>()? {
+                        let v3 = ud.as_ref::<LuaVec3>()?;
+                        LuaVec3(this.0 * v3.0)
+                            .as_lua(lua)
+                    } else {
+                        let quat = ud.as_ref::<LuaQuat>()?;
+                        LuaQuat(this.0 * quat.0)
+                            .as_lua(lua)
+                    }
+                },
+                elua::Value::Number(n) => {
+                    LuaQuat(this.0 * (n as f32))
+                        .as_lua(lua)
+                },
+                _ => {
+                    todo!()
+                }
+            }
+        });
+
+        builder.method("lerp", |_, this, (rhs, alpha): (Self, f32)| {
+            Ok(Self(this.lerp(*rhs, alpha)))
+        });
+    }
+);
+
+wrap_math_vec_copy!(
+    math::Transform,
+    derives(PartialEq),
+    no_new,
+    metamethods(ToString, Eq),
+    custom_fields {
+        wrapped_field_getsetters!(builder, "translation", translation, LuaVec3);
+        wrapped_field_getsetters!(builder, "rotation", rotation, LuaQuat);
+        wrapped_field_getsetters!(builder, "scale", scale, LuaVec3);
+    },
+    custom_methods {
+        builder.function("default", |_, ()| {
+            Ok(Self(math::Transform::default()))
+        });
+
+        builder.function("new", |_, (pos, rot, scale): (LuaVec3, LuaQuat, LuaVec3)| {
+            Ok(Self(math::Transform::new(*pos, *rot, *scale)))
+        });
+        
+        builder.function("from_translation", |_, (pos,): (LuaVec3,)| {
+            Ok(Self(math::Transform::from_translation(*pos)))
+        });
+        
+        builder.function("from_xyz", |_, (x, y, z)| {
+            Ok(Self(math::Transform::from_xyz(x, y, z)))
+        });
+
+        builder.method("clone", |_, this, ()| {
+            Ok(this.clone())
+        });
+
+        builder.method("forward", |_, this, ()| {
+            Ok(LuaVec3(this.forward()))
+        });
+
+        builder.method("left", |_, this, ()| {
+            Ok(LuaVec3(this.left()))
+        });
+
+        builder.method("up", |_, this, ()| {
+            Ok(LuaVec3(this.up()))
+        });
+
+        builder.method_mut("rotate", |_, this, (quat,): (LuaQuat,)| {
+            this.rotate(*quat);
+            Ok(())
+        });
+
+        builder.method_mut("rotate_x", |_, this, (deg,): (f32,)| {
+            this.rotate_x(math::Angle::Degrees(deg));
+            Ok(())
+        });
+
+        builder.method_mut("rotate_y", |_, this, (deg,): (f32,)| {
+            this.rotate_y(math::Angle::Degrees(deg));
+            Ok(())
+        });
+
+        builder.method_mut("rotate_z", |_, this, (deg,): (f32,)| {
+            this.rotate_z(math::Angle::Degrees(deg));
+            Ok(())
+        });
+
+        builder.method_mut("rotate_x_rad", |_, this, (rad,): (f32,)| {
+            this.rotate_x(math::Angle::Radians(rad));
+            Ok(())
+        });
+
+        builder.method_mut("rotate_y_rad", |_, this, (rad,): (f32,)| {
+            this.rotate_y(math::Angle::Radians(rad));
+            Ok(())
+        });
+
+        builder.method_mut("rotate_z_rad", |_, this, (rad,): (f32,)| {
+            this.rotate_z(math::Angle::Radians(rad));
+            Ok(())
+        });
+
+        builder.method_mut("translate", |_, this, (x, y, z): (f32, f32, f32)| {
+            this.translate(x, y, z);
+            Ok(())
+        });
+
+        builder.method("lerp", |_, this, (rhs, alpha): (Self, f32)| {
+            Ok(Self(this.lerp(*rhs, alpha)))
+        });
+
+        // rotate a transform
+        builder.meta_method(elua::MetaMethod::Mul, |_, this, (quat,): (LuaQuat,)| {
+            let mut t = *this;
+            t.rotation *= *quat;
+            Ok(t)
+        });
+
+        // move a transform
+        builder.meta_method(elua::MetaMethod::Add, |_, this, (pos,): (LuaVec3,)| {
+            let mut t = *this;
+            t.translation += *pos;
+            Ok(t)
+        });
+    }
+);

lyra-scripting/src/lua/wrappers/mod.rs

@@ -0,0 +1,14 @@
+pub mod math;
+pub use math::*;
+
+pub mod delta_time;
+pub use delta_time::*;
+
+pub mod res_handle;
+pub use res_handle::*;
+
+pub mod model_comp;
+pub use model_comp::*;
+
+pub mod input_actions;
+pub use input_actions::*;

lyra-scripting/src/lua/wrappers/model_comp.rs

@@ -0,0 +1,69 @@
+use std::any::TypeId;
+use std::{cell::Ref, sync::Arc};
+
+use elua::FromLua;
+use lyra_game::scene::ModelComponent;
+use lyra_reflect::Reflect;
+use lyra_resource::{Model, ResHandle};
+
+use crate::lua::LuaWrapper;
+use crate::lyra_engine;
+use crate::{lua::{FN_NAME_INTERNAL_REFLECT, FN_NAME_INTERNAL_REFLECT_TYPE}, ScriptBorrow};
+
+use super::LuaResHandle;
+
+#[derive(Clone, Reflect)]
+pub struct LuaModelComponent(pub ModelComponent);
+
+impl elua::Userdata for LuaModelComponent {
+    fn name() -> String {
+        "ModelComponent".to_string()
+    }
+
+    fn build<'a>(builder: &mut elua::UserdataBuilder<'a, Self>) {
+        builder
+        .function("new", |_, model: Ref<LuaResHandle>| {
+            let res = model.0.clone();
+            let res_any = res.as_arc_any();
+            match res_any.downcast::<ResHandle<Model>>() {
+                Ok(handle) => {
+                    let res = ResHandle::<Model>::clone(&handle);
+                    Ok(Self(ModelComponent(res)))
+                },
+                Err(_) => {
+                    Err(elua::Error::BadArgument {
+                        func: Some("ModelComponent:new".to_string()),
+                        arg_index: 1,
+                        arg_name: Some("model".to_string()),
+                        error: Arc::new(
+                            elua::Error::runtime("resource handle is not a handle to a Model")
+                        )
+                    })
+                }
+            }
+        })
+        .function(FN_NAME_INTERNAL_REFLECT_TYPE, |_, ()| {
+            Ok(ScriptBorrow::from_component::<ModelComponent>(None))
+        })
+        .method(FN_NAME_INTERNAL_REFLECT, |_, this, ()| {
+            Ok(ScriptBorrow::from_component(Some(this.0.clone())))
+        });
+    }
+}
+
+impl<'a> FromLua<'a> for LuaModelComponent {
+    fn from_lua(_: &'a elua::State, val: elua::Value<'a>) -> elua::Result<Self> {
+        let tyname = val.type_name();
+        let ud = val.as_userdata()
+            .ok_or(elua::Error::type_mismatch("Model", &tyname))?;
+        let ud = ud.as_ref::<LuaModelComponent>()?;
+        
+        Ok(ud.clone())
+    }
+}
+
+impl LuaWrapper for LuaModelComponent {
+    fn wrapped_type_id() -> std::any::TypeId {
+        TypeId::of::<ModelComponent>()
+    }
+}

lyra-scripting/src/lua/wrappers/res_handle.rs

@@ -0,0 +1,77 @@
+use std::{ops::Deref, sync::Arc};
+
+use elua::{AsLua, FromLua};
+use lyra_game::scene::ModelComponent;
+use lyra_resource::{Model, ResHandle, ResourceStorage};
+
+use crate::lua::FN_NAME_INTERNAL_AS_COMPONENT;
+
+use super::LuaModelComponent;
+
+#[derive(Clone)]
+pub struct LuaResHandle(pub Arc<dyn ResourceStorage>);
+
+impl Deref for LuaResHandle {
+    type Target = dyn ResourceStorage;
+
+    fn deref(&self) -> &Self::Target {
+        self.0.deref()
+    }
+}
+
+impl From<Arc<dyn ResourceStorage>> for LuaResHandle {
+    fn from(value: Arc<dyn ResourceStorage>) -> Self {
+        LuaResHandle(value)
+    }
+}
+
+impl elua::Userdata for LuaResHandle {
+    fn name() -> String {
+        "Handle".to_string()
+    }
+
+    fn build<'a>(builder: &mut elua::UserdataBuilder<'a, Self>) {
+        builder.field_getter("path", |_, this| Ok(this.path()));
+        builder.field_getter("version", |_, this| Ok(this.version()));
+        builder.field_getter("uuid", |_, this| Ok(this.uuid().to_string()));
+        builder.field_getter("state", |_, this| {
+            let name = match this.state() {
+                lyra_resource::ResourceState::Loading => "loading",
+                lyra_resource::ResourceState::Ready => "ready",
+            };
+
+            Ok(name)
+        });
+
+        builder.method("is_watched", |_, this, ()| {
+            Ok(this.is_watched())
+        });
+
+        builder.method("is_loaded", |_, this, ()| {
+            Ok(this.is_loaded())
+        });
+
+        builder.method(FN_NAME_INTERNAL_AS_COMPONENT, |lua, this, ()| {
+            let any = this.0.as_any();
+            match any.downcast_ref::<ResHandle<Model>>() {
+                Some(model) => {
+                    LuaModelComponent(ModelComponent(model.clone())).as_lua(lua)
+                },
+                None => {
+                    Ok(elua::Value::Nil)
+                }
+            }
+        });
+    }
+}
+
+impl<'a> FromLua<'a> for LuaResHandle {
+    fn from_lua(_: &'a elua::State, val: elua::Value<'a>) -> elua::Result<Self> {
+        let tyname = val.type_name();
+        let ud = val.as_userdata()
+            .ok_or(elua::Error::type_mismatch("Handle", &tyname))?;
+        let handle = ud.as_ref::<LuaResHandle>()?;
+        
+        Ok(handle.clone())
+    }
+}

lyra-scripting/src/script.rs

@@ -1,8 +1,12 @@
+use std::sync::atomic::{AtomicU64, Ordering};
+
 use lyra_ecs::Component;
 use lyra_resource::ResHandle;
 
 use crate::lyra_engine;
 
+static SCRIPT_ID_COUNTER: AtomicU64 = AtomicU64::new(0);
+
 #[derive(Clone)]
 pub struct Script<T> {
     res: ResHandle<T>,
@@ -15,7 +19,7 @@ impl<T> Script<T> {
         Self {
             res: script,
             name: name.to_string(),
-            id: 0 // TODO: make a counter
+            id: SCRIPT_ID_COUNTER.fetch_add(1, Ordering::AcqRel)
         }
     }
 

lyra-scripting/src/world.rs

@@ -5,6 +5,14 @@ use lyra_ecs::{world::World, Entity};
 #[derive(Clone)]
 pub struct ScriptEntity(pub Entity);
 
+impl std::ops::Deref for ScriptEntity {
+    type Target = Entity;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
 #[derive(Clone)]
 pub struct ScriptWorldPtr {
     pub inner: NonNull<World>,

shell.nix

@@ -12,9 +12,11 @@ mkShell rec {
     heaptrack
     mold
     udev
+    lua5_4_compat
   ];
   buildInputs = [
-    udev alsa-lib vulkan-loader
+    udev alsa-lib libGL gcc
+    vulkan-loader vulkan-headers vulkan-tools
     xorg.libX11 xorg.libXcursor xorg.libXi xorg.libXrandr # To use the x11 feature
     libxkbcommon wayland # To use the wayland feature
   ];