Start working on game plugins

src/app.rs

@@ -0,0 +1,3 @@
+pub struct App {
+    
+}

src/game.rs

@@ -1,4 +1,4 @@
-use std::sync::Arc;
+use std::{sync::Arc, collections::VecDeque};
 
 use async_std::{task::block_on, sync::Mutex};
 
@@ -14,7 +14,7 @@ use tracing_subscriber::{
 
 use winit::{window::{WindowBuilder, Window}, event::{Event, WindowEvent, KeyboardInput, ElementState, VirtualKeyCode, DeviceEvent}, event_loop::{EventLoop, ControlFlow}};
 
-use crate::{render::renderer::{Renderer, BasicRenderer}, input_event::InputEvent, ecs::{SimpleSystem, SystemDispatcher, EventQueue, Events}, input::InputSystem};
+use crate::{render::renderer::{Renderer, BasicRenderer}, input_event::InputEvent, ecs::{SimpleSystem, SystemDispatcher, EventQueue, Events}, input::InputSystem, plugin::Plugin};
 
 pub struct Controls<'a> {
     pub world: &'a mut edict::World,
@@ -36,14 +36,14 @@ struct GameLoop {
     window: Arc<Window>,
     renderer: Box<dyn Renderer>,
     
-    world: Arc<Mutex<edict::World>>,
+    world: edict::World,
     /// higher priority systems
     engine_sys_dispatcher: SystemDispatcher,
     user_sys_dispatcher: SystemDispatcher,
 }
 
 impl GameLoop {
-    pub async fn new(window: Arc<Window>, world: Arc<Mutex<edict::World>>, user_systems: SystemDispatcher) -> GameLoop {
+    pub async fn new(window: Arc<Window>, world: edict::World, user_systems: SystemDispatcher) -> GameLoop {
         Self {
             window: Arc::clone(&window),
             renderer: Box::new(BasicRenderer::create_with_window(window).await),
@@ -60,8 +60,7 @@ impl GameLoop {
 
     pub async fn on_init(&mut self) {
         // Create the EventQueue resource in the world
-        let mut world = self.world.lock().await;
+        self.world.insert_resource(EventQueue::new());
-        world.insert_resource(EventQueue::new());
     }
 
     pub fn run_sync(&mut self, event: Event<()>, control_flow: &mut ControlFlow) {
@@ -69,10 +68,8 @@ impl GameLoop {
     }
 
     async fn update(&mut self) {
-        let mut world = self.world.lock().await;
-
         let mut controls = Controls {
-            world: &mut world,
+            world: &mut self.world,
         };
 
         if let Err(e) = self.engine_sys_dispatcher.execute_mut(&mut controls) {
@@ -102,18 +99,14 @@ impl GameLoop {
 
             // TODO: Create system for this? or maybe merge into input system, idk
             InputEvent::CursorEntered { .. } => {
-                let mut world = self.world.lock().await;
+                let mut state = self.world.with_resource(|| WindowState::new());
-
-                let mut state = world.with_resource(|| WindowState::new());
                 state.is_cursor_inside_window = true;
                 
                 None
             },
 
             InputEvent::CursorLeft { .. } => {
-                let mut world = self.world.lock().await;
+                let mut state = self.world.with_resource(|| WindowState::new());
-
-                let mut state = world.with_resource(|| WindowState::new());
                 state.is_cursor_inside_window = false;
                 
                 None
@@ -127,14 +120,6 @@ impl GameLoop {
         }
     }
 
-    fn render_window() {
-        todo!()
-    }
-
-    fn render_item() {
-        todo!()
-    }
-
     fn on_exit(&mut self) {
         info!("On exit!");
     }
@@ -145,16 +130,14 @@ impl GameLoop {
             Event::DeviceEvent { device_id, event } => match event {
                 // convert a MouseMotion event to an InputEvent
                 DeviceEvent::MouseMotion { delta } => {
-                    let mut world = self.world.lock().await;
-
                     // make sure that the mouse is inside the window and the mouse has focus before reporting mouse motion
-                    let trigger = match world.get_resource::<WindowState>() {
+                    let trigger = match self.world.get_resource::<WindowState>() {
                         Some(window_state) if window_state.is_focused && window_state.is_cursor_inside_window => true,
                         _ => false,
                     };
 
                     if trigger {
-                        let event_queue = world.with_resource(|| Events::<InputEvent>::new());
+                        let event_queue = self.world.with_resource(|| Events::<InputEvent>::new());
     
                         let input_event = InputEvent::MouseMotion { device_id, delta, };
                         event_queue.push_back(input_event);
@@ -173,8 +156,7 @@ impl GameLoop {
                     // Its possible to receive multiple input events before the update event for
                     // the InputSystem is called, so we must use a queue for the events.
                     {
-                        let world = self.world.lock().await;
+                        if let Some(mut event_queue) = self.world.get_resource_mut::<EventQueue>() {
-                        if let Some(mut event_queue) = world.get_resource_mut::<EventQueue>() {
                             event_queue.trigger_event(input_event.clone());
                         };
                     }
@@ -199,9 +181,7 @@ impl GameLoop {
                         },
 
                         WindowEvent::Focused(is_focused) => {
-                            let mut world = self.world.lock().await;
+                            let mut state = self.world.with_resource(|| WindowState::new());
-
-                            let mut state = world.with_resource(|| WindowState::new());
                             state.is_focused = *is_focused;
                         },
     
@@ -219,12 +199,10 @@ impl GameLoop {
                     debug!("FPS: {}fps, {:.2}ms/frame", fps, self.fps_counter.get_tick_time());
                 } */
 
-                let mut world = self.world.lock().await;
+                self.renderer.as_mut().prepare(&mut self.world);
-                self.renderer.as_mut().prepare(&mut world);
+                if let Some(mut event_queue) = self.world.get_resource_mut::<EventQueue>() {
-                if let Some(mut event_queue) = world.get_resource_mut::<EventQueue>() {
                     event_queue.update_events();
                 }
-                drop(world);
 
                 match self.renderer.as_mut().render() {
                     Ok(_) => {}
@@ -246,14 +224,16 @@ impl GameLoop {
 }
 
 pub struct Game {
-    world: Option<Arc<Mutex<edict::World>>>,
+    pub world: Option<edict::World>,
+    plugins: VecDeque<Box<dyn Plugin>>,
     system_dispatcher: Option<SystemDispatcher>,
 }
 
 impl Default for Game {
     fn default() -> Self {
         Self {
-            world: None,
+            world: Some(edict::World::new()),
+            plugins: VecDeque::new(),
             system_dispatcher: Some(SystemDispatcher::new()),
         }
     }
@@ -261,55 +241,33 @@ impl Default for Game {
 
 impl Game {
     pub async fn initialize() -> Game {
-        /* let filter = FilterFn::new(|metadata| {
-            metadata.module_path()
-                .unwrap_or_else(|| metadata.target())
-                .starts_with("lyra_engine") && (LevelFilter::DEBUG >= metadata.level().to_owned())
-        });
-
-        let layer = tracing_subscriber::fmt::layer();
-
-        tracing_subscriber::registry()
-            .with(layer.with_filter(filter))
-            .init(); */
-
-        
-        /* tracing_subscriber::registry()
-            .with(fmt::layer().with_writer(stdout_layer))
-            .with(filter::Targets::new()
-                .with_target("lyra_engine", Level::TRACE)
-                .with_default(Level::DEBUG))
-            .init(); */
-
-        /* tracing_subscriber::fmt()
-            .with_max_level(Level::DEBUG)
-            .init(); */
-
-        info!("dheiudfgbwehifwe");
-
         let mut def = Self::default();
-        def.system_dispatcher.as_mut().unwrap().add_system("input", InputSystem::new(), &[]);
+        //def.system_dispatcher.add_system("input", InputSystem::new(), &[]);
         def
     }
 
-    pub fn with_world(&mut self, world: edict::World) -> &mut Self {
-        self.world = Some(Arc::new(Mutex::new(world)));
-
-        self
-    }
-
-    pub fn with_world_arc(&mut self, world: Arc<Mutex<edict::World>>) -> &mut Self {
-        self.world = Some(world);
-
-        self
-    }
-
     pub fn with_system<S>(&mut self, name: &str, system: S, depends: &[&str]) -> &mut Self
     where
         S: SimpleSystem + 'static
     {
-        let dispatcher = self.system_dispatcher.as_mut().unwrap();
+        let system_dispatcher = self.system_dispatcher.as_mut().unwrap();
-        dispatcher.add_system(name, system, depends);
+        system_dispatcher.add_system(name, system, depends);
+
+        self
+    }
+
+    /// Add a plugin to the game
+    pub fn with_plugin<P>(&mut self, plugin: P) -> &mut Self
+    where
+        P: Plugin + 'static
+    {
+        self.plugins.push_back(Box::new(plugin));
+
+        self
+    }
+
+    pub fn with_world(&mut self, world: edict::World) -> &mut Self {
+        self.world = Some(world);
 
         self
     }
@@ -323,16 +281,19 @@ impl Game {
                 .with_target("lyra_engine", Level::TRACE)
                 .with_default(Level::INFO))
             .init();
-        
-        let world = self.world.take().expect("ECS World was never given to Game!");
 
+        // setup all the plugins
+        while let Some(plugin) = self.plugins.pop_front() {
+            plugin.as_ref().setup(self);
+        }
+
+        // start winit event loops
         let event_loop = EventLoop::new();
         let window = Arc::new(WindowBuilder::new().build(&event_loop).unwrap());
 
-        let systems = self.system_dispatcher.take().unwrap();
+        let world = self.world.take().unwrap_or_else(|| edict::World::new());
-
+        let system_dispatcher = self.system_dispatcher.take().unwrap();
-        let mut g_loop = GameLoop::new(Arc::clone(&window), world, systems).await;
+        let mut g_loop = GameLoop::new(Arc::clone(&window), world, system_dispatcher).await;
-
         g_loop.on_init().await;
 
         event_loop.run(move |event, _, control_flow| {

src/input.rs

@@ -5,7 +5,7 @@ use glam::Vec2;
 use tracing::{warn, debug};
 use winit::event::{ElementState, MouseScrollDelta};
 
-use crate::{ecs::{SimpleSystem, EventQueue}, input_event::InputEvent};
+use crate::{ecs::{SimpleSystem, EventQueue}, input_event::InputEvent, plugin::Plugin};
 
 pub type KeyCode = winit::event::VirtualKeyCode;
 
@@ -84,8 +84,6 @@ impl From<winit::event::Force> for Force {
     }
 }
 
-/// 
-/// 
 /// Translated `WindowEvent::Touch` from `winit` crate
 #[derive(Clone, Debug, PartialEq)]
 pub struct Touch {
@@ -206,22 +204,6 @@ trait InputStorage {
 
 impl<T: Clone + Hash + Eq + PartialEq + 'static> InputStorage for InputButtons<T> {
     fn update_just_pressed(&mut self) {
-        /* for (hash, button) in self.button_events.iter_mut() {
-
-            /* if let ButtonEvent::JustPressed(b) = button {
-                *button = ButtonEvent::Pressed(b.clone());
-            } */
-            match button {
-                ButtonEvent::Pressed(_) => todo!(),
-                ButtonEvent::Released(b) => {
-                    return false;
-                },
-                ButtonEvent::JustPressed(b) => {
-                    *button = ButtonEvent::Pressed(b.clone());
-                },
-            }
-        } */
-
         self.button_events.retain(|_hash, button| {
             match button {
                 // remove released, no need to keep those around.
@@ -365,4 +347,30 @@ impl SimpleSystem for InputSystem {
 
         Ok(())
     }
+}
+
+fn input_system_fn(world: &mut edict::World) -> anyhow::Result<()> {
+    //let world = &mut controls.world;
+
+    let queue = world.get_resource_mut::<EventQueue>()
+        .map(|q| q.read_events::<InputEvent>()).flatten();
+
+    if queue.is_none() {
+        return Ok(());
+    }
+
+    let mut events = queue.unwrap();
+    let mut input = InputSystem::new();
+
+    while let Some(event) = events.pop_front() {
+        input.update(&event, world);
+    }
+
+    Ok(())
+}
+
+impl Plugin for InputSystem {
+    fn setup(&self, game: &mut crate::game::Game) {
+        game.with_system("input", input_system_fn, &[]);
+    }
 }

src/lib.rs

@@ -5,4 +5,6 @@ pub mod resources;
 pub mod ecs;
 pub mod math;
 pub mod input;
-pub mod castable_any;
+pub mod castable_any;
+pub mod plugin;
+pub mod app;

src/plugin.rs

@@ -0,0 +1,7 @@
+use crate::game::Game;
+
+pub trait Plugin {
+    /// Setup this plugin. This runs before the game has started
+    fn setup(&self, game: &mut Game);
+}
+