scripting: fix lua scripting (#13), create an example for it

Cargo.lock

@@ -1803,6 +1803,18 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "lua-scripting"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "async-std",
+ "fps_counter",
+ "lyra-engine",
+ "rand 0.8.5",
+ "tracing",
+]
+
 [[package]]
 name = "lyra-ecs"
 version = "0.1.0"
@@ -1927,6 +1939,7 @@ dependencies = [
  "anyhow",
  "lyra-ecs",
  "lyra-math",
+ "lyra-reflect",
 ]
 
 [[package]]
@@ -1934,6 +1947,7 @@ name = "lyra-scripting"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "atomic_refcell",
  "elua",
  "itertools 0.12.0",
  "lyra-ecs",
@@ -1941,6 +1955,7 @@ dependencies = [
  "lyra-reflect",
  "lyra-resource",
  "lyra-scripting-derive",
+ "paste",
  "thiserror",
  "tracing",
  "tracing-subscriber",
@@ -1950,6 +1965,7 @@ dependencies = [
 name = "lyra-scripting-derive"
 version = "0.1.0"
 dependencies = [
+ "paste",
  "proc-macro2",
  "quote",
  "syn 2.0.51",

Cargo.toml

@@ -10,7 +10,14 @@ members = [
     "lyra-ecs",
     "lyra-reflect",
     "lyra-scripting",
-    "lyra-game", "lyra-math", "lyra-scene", "examples/many-lights", "examples/fixed-timestep-rotating-model"]
+    "lyra-game",
+    "lyra-math",
+    "lyra-scene",
+
+    "examples/many-lights",
+    "examples/fixed-timestep-rotating-model",
+    "examples/lua-scripting"
+]
 
 [features]
 scripting = ["dep:lyra-scripting"]

examples/lua-scripting/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "lua-scripting"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+lyra-engine = { path = "../../", features = ["tracy", "lua_scripting"] }
+anyhow = "1.0.75"
+async-std = "1.12.0"
+tracing = "0.1.37"
+rand = "0.8.5"
+fps_counter = "3.0.0"
+
+[target.x86_64-unknown-linux-gnu]
+linker = "/usr/bin/clang"
+rustflags = ["-Clink-arg=-fuse-ld=lld", "-Clink-arg=-Wl,--no-rosegment"]
+
+[profile.dev]
+opt-level = 1
+
+[profile.release]
+debug = true

examples/lua-scripting/scripts/test.lua

@@ -0,0 +1,59 @@
+---Return the userdata's name from its metatable
+---@param val userdata
+---@return string
+function udname(val)
+    return getmetatable(val).__name
+end
+
+function on_init()
+    local cube = world:request_res("../assets/cube-texture-embedded.gltf")
+    print("Loaded textured cube (" .. udname(cube) .. ")")
+
+    cube:wait_until_loaded()
+    local scenes = cube:scenes()
+    local cube_scene = scenes[1]
+
+    local pos = Transform.from_translation(Vec3.new(0, 0, -8.0))
+
+    local e = world:spawn(pos, cube_scene)
+    print("spawned entity " .. tostring(e))
+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) ]]
+
+    ---@type number
+    local dt = world:resource(DeltaTime)
+
+    world:view(function (t)
+        t:translate(0, 0.15 * dt, 0)
+        return t
+    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/lua-scripting/src/main.rs

@@ -0,0 +1,151 @@
+use std::ptr::NonNull;
+
+use lyra_engine::{
+    assets::{gltf::Gltf, ResourceManager}, ecs::{
+        query::{Res, ResMut, View},
+        system::{BatchedSystem, Criteria, CriteriaSchedule, IntoSystem},
+        World,
+    }, game::Game, input::{
+        Action, ActionHandler, ActionKind, ActionMapping, ActionMappingId, ActionSource,
+        InputActionPlugin, KeyCode, LayoutId, MouseAxis, MouseInput,
+    }, lua::{LuaScript, LuaScriptingPlugin}, math::{self, Transform, Vec3}, render::light::directional::DirectionalLight, scene::{
+        CameraComponent, FreeFlyCamera, FreeFlyCameraPlugin, WorldTransform,
+        ACTLBL_LOOK_LEFT_RIGHT, ACTLBL_LOOK_ROLL, ACTLBL_LOOK_UP_DOWN,
+        ACTLBL_MOVE_FORWARD_BACKWARD, ACTLBL_MOVE_LEFT_RIGHT, ACTLBL_MOVE_UP_DOWN,
+    }, DeltaTime, Script, ScriptList
+};
+use tracing::info;
+
+#[async_std::main]
+async fn main() {
+    let action_handler_plugin = |game: &mut Game| {
+        let action_handler = ActionHandler::builder()
+            .add_layout(LayoutId::from(0))
+            .add_action(ACTLBL_MOVE_FORWARD_BACKWARD, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_MOVE_LEFT_RIGHT, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_MOVE_UP_DOWN, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_LOOK_LEFT_RIGHT, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_LOOK_UP_DOWN, Action::new(ActionKind::Axis))
+            .add_action(ACTLBL_LOOK_ROLL, Action::new(ActionKind::Axis))
+            .add_action("Debug", Action::new(ActionKind::Button))
+            .add_mapping(
+                ActionMapping::builder(LayoutId::from(0), ActionMappingId::from(0))
+                    .bind(
+                        ACTLBL_MOVE_FORWARD_BACKWARD,
+                        &[
+                            ActionSource::Keyboard(KeyCode::W).into_binding_modifier(1.0),
+                            ActionSource::Keyboard(KeyCode::S).into_binding_modifier(-1.0),
+                        ],
+                    )
+                    .bind(
+                        ACTLBL_MOVE_LEFT_RIGHT,
+                        &[
+                            ActionSource::Keyboard(KeyCode::A).into_binding_modifier(-1.0),
+                            ActionSource::Keyboard(KeyCode::D).into_binding_modifier(1.0),
+                        ],
+                    )
+                    .bind(
+                        ACTLBL_MOVE_UP_DOWN,
+                        &[
+                            ActionSource::Keyboard(KeyCode::C).into_binding_modifier(1.0),
+                            ActionSource::Keyboard(KeyCode::Z).into_binding_modifier(-1.0),
+                        ],
+                    )
+                    .bind(
+                        ACTLBL_LOOK_LEFT_RIGHT,
+                        &[
+                            ActionSource::Mouse(MouseInput::Axis(MouseAxis::X)).into_binding(),
+                            ActionSource::Keyboard(KeyCode::Left).into_binding_modifier(-1.0),
+                            ActionSource::Keyboard(KeyCode::Right).into_binding_modifier(1.0),
+                        ],
+                    )
+                    .bind(
+                        ACTLBL_LOOK_UP_DOWN,
+                        &[
+                            ActionSource::Mouse(MouseInput::Axis(MouseAxis::Y)).into_binding(),
+                            ActionSource::Keyboard(KeyCode::Up).into_binding_modifier(-1.0),
+                            ActionSource::Keyboard(KeyCode::Down).into_binding_modifier(1.0),
+                        ],
+                    )
+                    .bind(
+                        ACTLBL_LOOK_ROLL,
+                        &[
+                            ActionSource::Keyboard(KeyCode::E).into_binding_modifier(-1.0),
+                            ActionSource::Keyboard(KeyCode::Q).into_binding_modifier(1.0),
+                        ],
+                    )
+                    .bind(
+                        "Debug",
+                        &[ActionSource::Keyboard(KeyCode::B).into_binding()],
+                    )
+                    .finish(),
+            )
+            .finish();
+
+        let world = game.world_mut();
+        world.add_resource(action_handler);
+        game.with_plugin(InputActionPlugin);
+    };
+
+    Game::initialize()
+        .await
+        .with_plugin(lyra_engine::DefaultPlugins)
+        .with_plugin(setup_scene_plugin)
+        .with_plugin(action_handler_plugin)
+        .with_plugin(setup_script_plugin)
+        //.with_plugin(camera_debug_plugin)
+        .with_plugin(FreeFlyCameraPlugin)
+        .run()
+        .await;
+}
+
+fn setup_scene_plugin(game: &mut Game) {
+    let world = game.world_mut();
+    let resman = world.get_resource_mut::<ResourceManager>();
+    let camera_gltf = resman
+        .request::<Gltf>("../assets/AntiqueCamera.glb")
+        .unwrap();
+
+    camera_gltf.wait_recurse_dependencies_load();
+    let camera_mesh = &camera_gltf.data_ref().unwrap().scenes[0];
+    drop(resman);
+
+    world.spawn((
+        camera_mesh.clone(),
+        WorldTransform::default(),
+        Transform::from_xyz(0.0, -5.0, -2.0),
+    ));
+
+    {
+        let mut light_tran = Transform::from_xyz(1.5, 2.5, 0.0);
+        light_tran.scale = Vec3::new(0.5, 0.5, 0.5);
+        light_tran.rotate_x(math::Angle::Degrees(-45.0));
+        light_tran.rotate_y(math::Angle::Degrees(25.0));
+        world.spawn((
+            DirectionalLight {
+                enabled: true,
+                color: Vec3::ONE,
+                intensity: 0.15, //..Default::default()
+            },
+            light_tran,
+        ));
+    }
+
+    let mut camera = CameraComponent::new_3d();
+    camera.transform.translation += math::Vec3::new(0.0, 0.0, 5.5);
+    world.spawn((camera, FreeFlyCamera::default()));
+}
+
+fn setup_script_plugin(game: &mut Game) {
+    game.with_plugin(LuaScriptingPlugin);
+
+    let world = game.world_mut();
+    let 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,));
+}

lyra-scene/Cargo.toml

@@ -9,3 +9,4 @@ edition = "2021"
 anyhow = "1.0.81"
 lyra-ecs = { path = "../lyra-ecs", features = [ "math" ] }
 lyra-math = { path = "../lyra-math" }
+lyra-reflect = { path = "../lyra-reflect" }

lyra-scene/src/lib.rs

@@ -1,4 +1,5 @@
 mod node;
+use lyra_reflect::Reflect;
 pub use node::*;
 
 mod world_transform;
@@ -12,6 +13,10 @@ pub(crate) mod lyra_engine {
     pub(crate) mod ecs {
         pub use lyra_ecs::*;
     }
+
+    pub(crate) mod reflect {
+        pub use lyra_reflect::*;
+    }
 }
 
 /// A flag spawned on all scene node entities
@@ -27,7 +32,9 @@ pub struct SceneNodeRoot;
 /// This SceneGraph is special in the sense that it is literally just an ECS world with methods
 /// implemented for it that make it easier to use for a SceneGraph.
 //#[derive(Default)]
+#[derive(Clone, Reflect)]
 pub struct SceneGraph  {
+    #[reflect(skip)]
     pub(crate) world: World,
     root_node: SceneNode,
 }

lyra-scene/src/node.rs

@@ -1,11 +1,14 @@
 use lyra_ecs::{query::Entities, relation::{ChildOf, RelationOriginComponent}, Bundle, Entity};
+use lyra_reflect::Reflect;
 
-use crate::SceneGraph;
+use crate::{SceneGraph, lyra_engine};
 
 /// A node inside of the Scene
-#[derive(Clone, PartialEq, Eq)]
+#[derive(Clone, PartialEq, Eq, Reflect)]
 pub struct SceneNode {
+    #[reflect(skip)]
     parent: Option<Entity>,
+    #[reflect(skip)]
     entity: Entity
 }
 

lyra-scripting/Cargo.toml

@@ -19,11 +19,13 @@ lyra-game = { path = "../lyra-game" }
 thiserror = "1.0.50"
 anyhow = "1.0.77"
 tracing = "0.1.37"
+atomic_refcell = "0.1.13"
 
 # enabled with lua feature
 #mlua = { version = "0.9.2", features = ["lua54"], optional = true } # luajit maybe?
 elua = { path = "./elua", optional = true }
 itertools = "0.12.0"
+paste = "1.0.14"
 
 
 [dev-dependencies]

lyra-scripting/elua

@@ -1 +1 @@
-Subproject commit 54c9926a04cdef657289fd67730c0b85d1bdda3e
+Subproject commit a761f4094bc18190285b4687ec804161fea874b6

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

@@ -12,3 +12,4 @@ proc-macro = true
 proc-macro2 = "1.0.70"
 quote = "1.0.33"
 syn = "2.0.41"
+paste = "1.0.14"

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

@@ -0,0 +1,149 @@
+use quote::{format_ident, quote};
+use syn::{parse_macro_input, Ident, Token};
+
+pub(crate) struct HandleWrapUsage {
+    pub type_path: syn::Path,
+    /// The extra derives of the type.
+    pub override_name: Option<Ident>,
+
+    pub extra_builds: Option<syn::Block>,
+}
+
+impl syn::parse::Parse for HandleWrapUsage {
+    fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
+        let type_path: syn::Path = input.parse()?;
+        let mut s = Self {
+            type_path,
+            override_name: None,
+            extra_builds: None,
+        };
+        
+        while input.peek(Token![,]) {
+            let _: Token![,] = input.parse()?;
+
+            if input.peek(syn::Ident) {
+                let ident: syn::Ident = input.parse()?;
+                let ident_str = ident.to_string();
+                let ident_str = ident_str.as_str();
+
+                match ident_str {
+                    "name" => {
+                        let _eq: Token![=] = input.parse()?;
+
+                        let name: Ident = input.parse()?;
+                        s.override_name = Some(name);
+                    },
+                    _ => {
+                        return Err(syn::Error::new_spanned(ident, "unknown wrapper command"));
+                    }
+                }
+            }/*  else if input.parse::<Block(syn::Block) {
+                let block = input.parse()?;
+                s.extra_builds = block;
+            } */
+
+            if let Ok(block) = input.parse::<syn::Block>() {
+                s.extra_builds = Some(block);
+            }
+        }
+
+        Ok(s)
+    }
+}
+
+pub(crate) fn lua_wrap_handle_impl(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    let input = parse_macro_input!(input as HandleWrapUsage);
+    
+    let handle_name = &input.type_path.segments.last().unwrap().ident;
+
+    let base_name = input.override_name.unwrap_or_else(|| handle_name.clone());
+    let wrapper_name = format_ident!("Lua{}Handle", base_name);
+    //let wrapper_name = Ident::new(&format!("Lua{}", handle_name.to_string()), handle_name.span());
+    let ud_name = format!("{}Handle", base_name.to_string());
+
+    let extras = input.extra_builds;
+
+    quote! {
+        #[derive(Clone, Reflect)]
+        pub struct #wrapper_name(pub ResHandle<#handle_name>);
+
+        impl Deref for #wrapper_name {
+            type Target = ResHandle<#handle_name>;
+
+            fn deref(&self) -> &Self::Target {
+                &self.0
+            }
+        }
+
+        impl From<ResHandle<#handle_name>> for #wrapper_name {
+            fn from(value: ResHandle<#handle_name>) -> Self {
+                #wrapper_name(value)
+            }
+        }
+
+        impl elua::Userdata for #wrapper_name {
+            fn name() -> String {
+                #ud_name.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 = if this.is_loaded() {
+                        "ready"
+                    } else if this.get_error().is_some() {
+                        "error"
+                    } else { "loading" };
+
+                    Ok(name)
+                });
+
+                builder.method("is_watched", |_, this, ()| {
+                    Ok(this.is_watched())
+                });
+
+                builder.method("is_loaded", |_, this, ()| {
+                    Ok(this.is_loaded())
+                });
+
+                builder.method("is_loaded", |_, this, ()| {
+                    Ok(this.is_loaded())
+                });
+
+                builder.method("wait_until_loaded", |_, this, ()| {
+                    this.wait_recurse_dependencies_load();
+
+                    Ok(())
+                });
+
+                builder.function(FN_NAME_INTERNAL_REFLECT_TYPE, |_, ()| {
+                    Ok(ScriptBorrow::from_component::<ResHandle<#handle_name>>(None))
+                });
+                builder.method(FN_NAME_INTERNAL_REFLECT, |_, this, ()| {
+                    Ok(ScriptBorrow::from_component(Some(this.0.clone())))
+                });
+
+                #extras
+            }
+        }
+
+        impl<'a> FromLua<'a> for #wrapper_name {
+            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(#ud_name, &tyname))?;
+                let ud = ud.as_ref::<#wrapper_name>()?;
+                
+                Ok(ud.clone())
+            }
+        }
+
+        impl LuaWrapper for #wrapper_name {
+            fn wrapped_type_id() -> std::any::TypeId {
+                TypeId::of::<ResHandle<#handle_name>>()
+            }
+        }
+    }.into()
+}

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

@@ -1,3 +1,5 @@
+use handle_macro::lua_wrap_handle_impl;
+use lua_macro::wrap_lua_struct_impl;
 use proc_macro2::{Ident, Span};
 use quote::quote;
 use syn::{parse_macro_input, Path, Token, token, parenthesized, punctuated::Punctuated, braced};
@@ -5,8 +7,14 @@ use syn::{parse_macro_input, Path, Token, token, parenthesized, punctuated::Punc
 mod mat_wrapper;
 use mat_wrapper::MatWrapper;
 
-const FN_NAME_INTERNAL_REFLECT_TYPE: &str = "__lyra_internal_reflect_type";
+mod lua_macro;
-const FN_NAME_INTERNAL_REFLECT: &str = "__lyra_internal_reflect";
+
+mod handle_macro;
+
+// pub use lua_macro::wrap_lua_struct;
+
+pub(crate) const FN_NAME_INTERNAL_REFLECT_TYPE: &str = "__lyra_internal_reflect_type";
+pub(crate) const FN_NAME_INTERNAL_REFLECT: &str = "__lyra_internal_reflect";
 
 pub(crate) struct MetaMethod {
     pub ident: Ident,
@@ -721,3 +729,13 @@ pub fn wrap_math_vec_copy(input: proc_macro::TokenStream) -> proc_macro::TokenSt
         }
     })
 }
+
+#[proc_macro]
+pub fn wrap_lua_struct(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    wrap_lua_struct_impl(input)
+}
+
+#[proc_macro]
+pub fn lua_wrap_handle(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    lua_wrap_handle_impl(input)
+}

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

@@ -0,0 +1,164 @@
+use proc_macro2::Span;
+use quote::quote;
+use syn::{parse_macro_input, Path, Ident};
+
+use crate::{VecWrapper, WrapUsage, FN_NAME_INTERNAL_REFLECT, FN_NAME_INTERNAL_REFLECT_TYPE};
+
+/// Creates a wrapper type for a VecN from the engine math library.
+pub fn wrap_lua_struct_impl(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/src/host.rs

@@ -1,4 +1,4 @@
-use std::collections::HashMap;
+use std::{collections::HashMap, sync::{Arc, Mutex}};
 
 use lyra_ecs::{ResourceObject, Entity, World};
 
@@ -38,7 +38,7 @@ pub struct ScriptData {
 }
 
 /// Provides an API to a scripting context.
-pub trait ScriptApiProvider {
+pub trait ScriptApiProvider: Send + Sync {
     /// The type used as the script's context.
     type ScriptContext;
 
@@ -62,7 +62,7 @@ pub trait ScriptApiProvider {
 /// A storage for a [`ScriptHost`]'s api providers
 #[derive(Default)]
 pub struct ScriptApiProviders<T: ScriptHost> {
-    pub apis: Vec<Box<dyn ScriptApiProvider<ScriptContext = T::ScriptContext>>>,
+    pub apis: Vec<Arc<Mutex<dyn ScriptApiProvider<ScriptContext = T::ScriptContext>>>>,
 }
 
 impl<T: ScriptHost> ScriptApiProviders<T> {
@@ -70,7 +70,7 @@ impl<T: ScriptHost> ScriptApiProviders<T> {
     where
         P: ScriptApiProvider<ScriptContext = T::ScriptContext> + 'static
     {
-        self.apis.push(Box::new(provider));
+        self.apis.push(Arc::new(Mutex::new(provider)));
     }
 }
 

lyra-scripting/src/lua/dynamic_iter.rs

@@ -1,6 +1,6 @@
-use std::{ptr::NonNull, ops::{Range, Deref}};
+use std::{ptr::NonNull, ops::Deref};
 
-use lyra_ecs::{ComponentColumn, ComponentInfo, Archetype, ArchetypeId, ArchetypeEntityId, query::dynamic::{DynamicType, QueryDynamicType}, query::Fetch, Entity};
+use lyra_ecs::{query::dynamic::DynamicViewStateIter, Entity};
 use lyra_reflect::TypeRegistry;
 
 #[cfg(feature = "lua")]
@@ -8,130 +8,6 @@ use super::ReflectLuaProxy;
 
 use crate::ScriptWorldPtr;
 
-/// A reimplementation of lyra_ecs::FetchDynamicType that doesn't store references and
-/// uses a pointer instead.
-/// This makes it easier to expose to Lua
-#[derive(Clone)]
-pub struct FetchDynamicType {
-    col: NonNull<ComponentColumn>,
-    info: ComponentInfo,
-}
-
-impl<'a> Fetch<'a> for FetchDynamicType {
-    type Item = DynamicType;
-
-    fn dangling() -> Self {
-        unreachable!()
-    }
-
-    unsafe fn get_item(&mut self, entity: ArchetypeEntityId) -> Self::Item {
-        let ptr = unsafe { self.col.as_ref().borrow_ptr() };
-        let ptr = NonNull::new_unchecked(ptr.as_ptr()
-            .add(entity.0 as usize * self.info.layout().size()));
-
-        DynamicType {
-            info: self.info,
-            ptr,
-        }
-    }
-}
-
-impl<'a> From<lyra_ecs::query::dynamic::FetchDynamicType<'a>> for FetchDynamicType {
-    fn from(value: lyra_ecs::query::dynamic::FetchDynamicType<'a>) -> Self {
-        Self {
-            col: NonNull::from(value.col),
-            info: value.info,
-        }
-    }
-}
-
-pub struct DynamicViewRow {
-    entity: Entity,
-    item: Vec<DynamicType>,
-}
-
-#[derive(Clone)]
-pub struct DynamicViewIter {
-    world_ptr: ScriptWorldPtr,
-    queries: Vec<QueryDynamicType>,
-    fetchers: Vec<FetchDynamicType>,
-    archetypes: Vec<NonNull<Archetype>>,
-    next_archetype: usize,
-    component_indices: Range<u64>,
-}
-
-impl<'a> From<lyra_ecs::query::dynamic::DynamicViewIter<'a>> for DynamicViewIter {
-    fn from(value: lyra_ecs::query::dynamic::DynamicViewIter<'a>) -> Self {
-        Self {
-            world_ptr: ScriptWorldPtr::from_ref(value.world),
-            queries: value.queries,
-            fetchers: value.fetchers.into_iter().map(|f| FetchDynamicType::from(f)).collect(),
-            archetypes: value.archetypes.into_iter().map(|a| NonNull::from(a)).collect(),
-            next_archetype: value.next_archetype,
-            component_indices: value.component_indices,
-        }
-    }
-}
-
-impl Iterator for DynamicViewIter {
-    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() {
-                    if !fetcher.can_visit_item(entity_index) {
-                        break;
-                    } else {
-                        let i = unsafe { fetcher.get_item(entity_index) };
-                        fetch_res.push(i);
-                    }
-                }
-
-                if fetch_res.len() != self.fetchers.len() {
-                    continue;
-                }
-                
-                let arch = unsafe { self.archetypes.get_unchecked(self.next_archetype - 1).as_ref() };
-                let entity = arch.entity_at_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
-                }
-
-                let arch_id = self.next_archetype;
-                self.next_archetype += 1;
-                let arch = unsafe { self.archetypes.get_unchecked(arch_id).as_ref() };
-
-                if arch.entity_indexes().len() == 0 {
-                    continue;
-                }
-
-                if self.queries.iter().any(|q| !q.can_visit_archetype(arch)) {
-                    continue;
-                }
-
-                let world = self.world_ptr.as_ref();
-
-                self.fetchers = self.queries.iter()
-                    .map(|q| unsafe { q.fetch(world, ArchetypeId(arch_id as u64), arch) } )
-                    .map(|f| FetchDynamicType::from(f))
-                    .collect();
-                self.component_indices = 0..arch.entity_indexes().len() as u64;
-            }
-        }
-    }
-}
-
 #[cfg(feature = "lua")]
 pub struct ReflectedItem<'a> {
     //pub proxy: &'a ReflectLuaProxy,
@@ -147,7 +23,7 @@ pub struct ReflectedRow<'a> {
 
 pub struct ReflectedIterator {
     pub world: ScriptWorldPtr,
-    pub dyn_view: DynamicViewIter,
+    pub dyn_view: DynamicViewStateIter,
     pub reflected_components: Option<NonNull<TypeRegistry>>
 }
 
@@ -156,7 +32,8 @@ impl ReflectedIterator {
     pub fn next_lua<'a>(&mut self, lua: &'a elua::State) -> Option<ReflectedRow<'a>> {
         use elua::AsLua;
         
-        let n = self.dyn_view.next();
+        let world = self.world.as_ref();
+        let n = self.dyn_view.next(world);
         
         if let Some(row) = n {
             if self.reflected_components.is_none() {
@@ -166,7 +43,7 @@ impl ReflectedIterator {
             }
 
             let mut dynamic_row = vec![];
-            for d in row.item.iter() {
+            for d in row.row.iter() {
                 let id = d.info.type_id().as_rust();
                 let reflected_components = 
                     unsafe { self.reflected_components.as_ref().unwrap().as_ref() };

lyra-scripting/src/lua/loader.rs

@@ -1,6 +1,6 @@
 use std::sync::Arc;
 
-use lyra_resource::{ResourceLoader, ResHandle};
+use lyra_resource::{loader::{PinedBoxLoaderFuture, ResourceLoader}, ResHandle, ResourceData};
 
 #[derive(Debug, Clone)]
 pub struct LuaScript {
@@ -8,6 +8,20 @@ pub struct LuaScript {
     pub(crate) bytes: Vec<u8>,
 }
 
+impl ResourceData for LuaScript {
+    fn as_any(&self) -> &dyn std::any::Any {
+        self
+    }
+
+    fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
+        self
+    }
+
+    fn dependencies(&self) -> Vec<lyra_resource::UntypedResHandle> {
+        vec![]
+    }
+}
+
 #[derive(Default, Clone)]
 pub struct LuaLoader;
 
@@ -20,24 +34,33 @@ impl ResourceLoader for LuaLoader {
         &["text/lua"]
     }
 
-    fn load(&self, _resource_manager: &mut lyra_resource::ResourceManager, path: &str) -> Result<std::sync::Arc<dyn lyra_resource::ResourceStorage>, lyra_resource::LoaderError> {
+    fn load(&self, _resource_manager: lyra_resource::ResourceManager, path: &str) -> PinedBoxLoaderFuture {
-        let bytes = std::fs::read(path)?;
+        let path = path.to_string();
+        Box::pin(async move {
+            let bytes = std::fs::read(&path)?;
 
-        let s = ResHandle::new_ready(path, LuaScript {
+            let s = LuaScript {
-            bytes
+                bytes
-        });
+            };
 
-        Ok(Arc::new(s))
+            Ok(Box::new(s) as Box<dyn ResourceData>)
+        })
     }
 
-    fn load_bytes(&self, _resource_manager: &mut lyra_resource::ResourceManager, bytes: Vec<u8>, offset: usize, length: usize) -> Result<std::sync::Arc<dyn lyra_resource::ResourceStorage>, lyra_resource::LoaderError> {
+    fn load_bytes(&self, _resource_manager: lyra_resource::ResourceManager, bytes: Vec<u8>, offset: usize, length: usize) -> PinedBoxLoaderFuture {
-        let end = offset + length;
+        Box::pin(async move {
-        let bytes = bytes[offset..end].to_vec();
+            let end = offset + length;
+            let bytes = bytes[offset..end].to_vec();
             
-        let s = ResHandle::new_ready("from bytes", LuaScript {
+            let s = LuaScript {
-            bytes
+                bytes
-        });
+            };
 
-        Ok(Arc::new(s))
+            Ok(Box::new(s) as Box<dyn ResourceData>)
+        })
+    }
+    
+    fn create_erased_handle(&self) -> Arc<dyn lyra_resource::ResourceStorage> {
+        Arc::from(ResHandle::<LuaScript>::new_loading(None))
     }
 }

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

@@ -1,7 +1,10 @@
-use lyra_ecs::ResourceObject;
+use std::any::TypeId;
-use lyra_reflect::Reflect;
 
-use crate::{lua::{wrappers::{LuaActionHandler, LuaDeltaTime, LuaModelComponent}, LuaContext, RegisterLuaType, FN_NAME_INTERNAL_REFLECT_TYPE}, ScriptApiProvider, ScriptBorrow, ScriptData, ScriptDynamicBundle, ScriptWorldPtr};
+use lyra_ecs::ResourceObject;
+use lyra_reflect::{Reflect, TypeRegistry};
+use lyra_resource::gltf::Gltf;
+
+use crate::{lua::{wrappers::{LuaGltfHandle, LuaActionHandler, LuaDeltaTime, LuaResHandleToComponent, LuaSceneHandle}, LuaContext, ReflectLuaProxy, RegisterLuaType, FN_NAME_INTERNAL_REFLECT_TYPE}, ScriptApiProvider, ScriptBorrow, ScriptData, ScriptDynamicBundle, ScriptWorldPtr};
 
 #[derive(Default)]
 pub struct LyraEcsApiProvider;
@@ -11,8 +14,26 @@ impl ScriptApiProvider for LyraEcsApiProvider {
 
     fn prepare_world(&mut self, world: &mut lyra_ecs::World) {
         world.register_lua_convert::<LuaDeltaTime>();
-        world.register_lua_wrapper::<LuaModelComponent>();
+        world.register_lua_wrapper::<LuaSceneHandle>();
         world.register_lua_wrapper::<LuaActionHandler>();
+
+        let mut registry = world.get_resource_mut::<TypeRegistry>();
+
+        let reg_type = registry.get_type_or_default(TypeId::of::<Gltf>());
+        reg_type.add_data(ReflectLuaProxy::from_lua_proxy::<LuaGltfHandle>());
+
+        let l = LuaResHandleToComponent::new(
+            |lua, res| {
+                if let Some(gltf) = res.as_typed::<Gltf>() {
+                    Some(lua.create_userdata(LuaGltfHandle(gltf)).unwrap())
+                } else {
+                    None
+                }
+            }
+        );
+        reg_type.add_data(l);
+
+        //reg_type.add_data(ReflectLuaProxy::from_lua_proxy::<LuaGltfHandle>());
     }
 
     fn expose_api(&mut self, _: &ScriptData, ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
@@ -21,7 +42,7 @@ impl ScriptApiProvider for LyraEcsApiProvider {
         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("SceneComponent", ctx.create_proxy::<LuaSceneHandle>()?)?;
         globals.set("ActionHandler", ctx.create_proxy::<LuaActionHandler>()?)?;
 
         let dt_table = create_reflect_table::<lyra_game::DeltaTime>(&ctx)?;

lyra-scripting/src/lua/script.rs

@@ -30,6 +30,7 @@ impl ScriptHost for LuaHost {
         });
         
         for provider in providers.apis.iter_mut() {
+            let mut provider = provider.lock().unwrap();
             provider.expose_api(script_data, &mut ctx)?;
         }
 
@@ -44,6 +45,7 @@ impl ScriptHost for LuaHost {
 
     fn setup_script(&mut self, script_data: &crate::ScriptData, ctx: &mut Self::ScriptContext, providers: &mut crate::ScriptApiProviders<Self>) -> Result<(), ScriptError> {
         for provider in providers.apis.iter_mut() {
+            let mut provider = provider.lock().unwrap();
             provider.setup_script(script_data, ctx)?;
         }
 
@@ -57,6 +59,7 @@ impl ScriptHost for LuaHost {
             ctx: &mut Self::ScriptContext, providers: &mut crate::ScriptApiProviders<Self>,
             function_name: &str) -> Result<(), ScriptError> {
         for provider in providers.apis.iter_mut() {
+            let mut provider = provider.lock().unwrap();
             provider.update_script_environment(world.clone(), script_data, ctx)?;
         }
 

lyra-scripting/src/lua/system.rs

@@ -29,7 +29,7 @@ pub fn lua_scripts_create_contexts(
                 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() {
+                if let Some(script_res) = &script.res_handle().data_ref() {
                     debug!("Loading script...");
                     let mut script_ctx =
                         host.load_script(&script_res.bytes, &script_data, &mut providers)?;
@@ -74,14 +74,14 @@ pub fn lua_scripts_create_contexts(
 /// 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>,
+    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 handle_path = handle.path().unwrap();
                 let watch_recv = resman.watcher_event_recv(&handle_path).unwrap();
 
                 match watch_recv.try_recv() {
@@ -199,7 +199,7 @@ impl Plugin for LuaScriptingPlugin {
         world.add_resource_default::<ScriptApiProviders<LuaHost>>();
         world.add_resource_default::<ScriptContexts<LuaContext>>();
 
-        let mut loader = world
+        let loader = world
             .try_get_resource_mut::<ResourceManager>()
             .expect("Add 'ResourceManager' to the world before trying to add this plugin");
         loader.register_loader::<LuaLoader>();

lyra-scripting/src/lua/world.rs

@@ -2,12 +2,12 @@ use std::{ptr::NonNull, sync::Arc};
 
 use crate::{ScriptBorrow, ScriptEntity, ScriptWorldPtr};
 use elua::AsLua;
-use lyra_ecs::{query::dynamic::QueryDynamicType, CommandQueue, Commands, DynamicBundle, World};
+use lyra_ecs::{query::dynamic::{DynamicViewState, DynamicViewStateIter, QueryDynamicType}, CommandQueue, Commands, DynamicBundle, World};
 use lyra_reflect::{ReflectWorldExt, RegisteredType, TypeRegistry};
 use lyra_resource::ResourceManager;
 
 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
+    reflect_user_data, wrappers::LuaResHandleToComponent, LuaTableProxyLookup, ReflectLuaProxy, ReflectedIterator, FN_NAME_INTERNAL_AS_COMPONENT, FN_NAME_INTERNAL_REFLECT, FN_NAME_INTERNAL_REFLECT_TYPE
 };
 
 impl<'lua> elua::FromLua<'lua> for ScriptEntity {
@@ -114,7 +114,8 @@ impl elua::Userdata for ScriptWorldPtr {
                     }
 
                     let world = unsafe { this.inner.as_ref() };
-                    let mut view = world.dynamic_view();
+                    //let mut view = world.dynamic_view();
+                    let mut view = DynamicViewState::new();
 
                     for (idx, comp) in queries.into_iter().enumerate() {
                         match comp {
@@ -160,7 +161,7 @@ impl elua::Userdata for ScriptWorldPtr {
                     let iter = view.into_iter();
                     let mut reflected_iter = ReflectedIterator {
                         world: this.clone(),
-                        dyn_view: DynamicViewIter::from(iter),
+                        dyn_view: DynamicViewStateIter::from(iter),
                         reflected_components: None,
                     };
 
@@ -297,12 +298,19 @@ impl elua::Userdata for ScriptWorldPtr {
 
                 Ok(())
             })
-            .method_mut("request_res", |_, this, path: String| {
+            .method_mut("request_res", |lua, this, path: String| {
-                let world = this.as_mut();
+                let world: &mut World = this.as_mut();
-                let mut man = world.get_resource_mut::<ResourceManager>();
+                let man = world.get_resource_mut::<ResourceManager>();
                 let handle = man.request_raw(&path).unwrap();
 
-                Ok(LuaResHandle::from(handle))
+                // get the actual resource handle wrapper
+                let registry = world.get_resource::<TypeRegistry>();
+                let ty = registry.get_type(handle.resource_type_id())
+                    .expect("Could not find asset type in registry");
+                let data = ty.get_data::<LuaResHandleToComponent>()
+                    .expect("Asset type does not have 'LuaResHandleToComponent' as TypeData");
+
+                Ok((data.fn_to_lua)(lua, handle).unwrap())
             });
     }
 }

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

@@ -0,0 +1,128 @@
+use std::{any::TypeId, ops::Deref};
+use elua::{AnyUserdata, AsLua, FromLua, State, Value};
+use lyra_resource::{gltf::Gltf, ResHandle, UntypedResHandle};
+use lyra_game::scene::SceneGraph;
+use lyra_reflect::{Reflect, TypeData};
+use lyra_scripting_derive::lua_wrap_handle;
+
+use crate::{lua::{LuaWrapper, FN_NAME_INTERNAL_AS_COMPONENT, FN_NAME_INTERNAL_REFLECT, FN_NAME_INTERNAL_REFLECT_TYPE}, lyra_engine, ScriptBorrow};
+
+pub struct LuaResHandleToComponent {
+    /// Create the userdata component that 
+    pub fn_to_lua: fn(&State, UntypedResHandle) -> Option<AnyUserdata>,
+}
+
+impl LuaResHandleToComponent {
+    pub fn new(f: fn(&State, UntypedResHandle) -> Option<AnyUserdata>) -> Self {
+        Self {
+            fn_to_lua: f
+        }
+    }
+}
+
+impl TypeData for LuaResHandleToComponent {
+    fn as_any(&self) -> &dyn std::any::Any {
+        self
+    }
+
+    fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
+        self
+    }
+
+    fn boxed_clone(&self) -> Box<dyn TypeData> {
+        todo!()
+    }
+}
+
+#[derive(Clone)]
+pub struct LuaResHandle(pub UntypedResHandle);
+
+impl Deref for LuaResHandle {
+    type Target = UntypedResHandle;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl From<UntypedResHandle> for LuaResHandle {
+    fn from(value: UntypedResHandle) -> 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 = if this.is_loaded() {
+                "ready"
+            } else if this.get_error().is_some() {
+                "error"
+            } else { "loading" };
+
+            Ok(name)
+        });
+
+        builder.method("is_watched", |_, this, ()| {
+            Ok(this.is_watched())
+        });
+
+        builder.method("is_loaded", |_, this, ()| {
+            Ok(this.is_loaded())
+        });
+
+        builder.method("wait_until_loaded", |_, this, ()| {
+            this.wait_recurse_dependencies_load();
+
+            Ok(())
+        });
+
+        builder.method(FN_NAME_INTERNAL_AS_COMPONENT, |lua, this, ()| {
+            let handle = &this.0;
+
+            if let Some(handle) = handle.as_typed::<SceneGraph>() {
+                LuaSceneHandle(handle).as_lua(lua)
+            } else if let Some(handle) = handle.as_typed::<Gltf>() {
+                LuaGltfHandle(handle).as_lua(lua)
+            } else {
+                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())
+    }
+}
+
+lua_wrap_handle!(SceneGraph, name=Scene, {});
+lua_wrap_handle!(Gltf, {
+    builder.method("scenes", |lua, this, ()| {
+        if let Some(data) = this.0.data_ref() {
+            let table = lua.create_table()?;
+
+            for (i, scene) in data.scenes.iter().enumerate() {
+                let i = i as i64 + 1; // lua indexes start at 1
+                table.raw_seti(i, LuaSceneHandle(scene.clone()))?;
+            }
+
+            Ok(Value::Table(table))
+        } else {
+            Ok(Value::Nil)
+        }
+    });
+});

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

@@ -4,11 +4,8 @@ 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::*;
+
+pub mod asset;
+pub use asset::*;

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

@@ -1,77 +0,0 @@
-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

@@ -1,20 +1,20 @@
 use std::sync::atomic::{AtomicU64, Ordering};
 
 use lyra_ecs::Component;
-use lyra_resource::ResHandle;
+use lyra_resource::{ResHandle, ResourceData};
 
 use crate::lyra_engine;
 
 static SCRIPT_ID_COUNTER: AtomicU64 = AtomicU64::new(0);
 
 #[derive(Clone)]
-pub struct Script<T> {
+pub struct Script<T: ResourceData> {
     res: ResHandle<T>,
     name: String,
     id: u64
 }
 
-impl<T> Script<T> {
+impl<T: ResourceData> Script<T> {
     pub fn new(name: &str, script: ResHandle<T>) -> Self {
         Self {
             res: script,
@@ -38,15 +38,15 @@ impl<T> Script<T> {
 
 /// A list of scripts
 #[derive(Clone, Default, Component)]
-pub struct ScriptList<T: 'static>(Vec<Script<T>>);
+pub struct ScriptList<T: ResourceData>(Vec<Script<T>>);
 
-impl<T> ScriptList<T> {
+impl<T: ResourceData> ScriptList<T> {
     pub fn new(list: Vec<Script<T>>) -> Self {
         Self(list)
     }
 }
 
-impl<T> std::ops::Deref for ScriptList<T> {
+impl<T: ResourceData> std::ops::Deref for ScriptList<T> {
     type Target = Vec<Script<T>>;
 
     fn deref(&self) -> &Self::Target {
@@ -54,7 +54,7 @@ impl<T> std::ops::Deref for ScriptList<T> {
     }
 }
 
-impl<T> std::ops::DerefMut for ScriptList<T> {
+impl<T: ResourceData> std::ops::DerefMut for ScriptList<T> {
     fn deref_mut(&mut self) -> &mut Self::Target {
         &mut self.0
     }

shell.nix

@@ -16,6 +16,7 @@ pkgs.mkShell.override {
   buildInputs = [
     rust 
   ] ++ (with pkgs; [
+    cargo-expand
     pkg-config openssl udev
     wasm-pack trunk
     heaptrack valgrind