Rename crate folders to remove raidillon prefix

core/src/engine.rs

@@ -0,0 +1,73 @@
+use std::cell::RefCell;
+use std::rc::Rc;
+use winit::event::Event;
+use crate::SceneManager;
+use crate::system::{SystemContext, SystemManager};
+use raidillon_assets::{ModelManager, ModelManagerRef};
+
+pub struct Engine {
+    pub scene_manager: SceneManager,
+    pub system_manager: SystemManager,
+    pub assets_model_manager: Option<ModelManagerRef>,
+    winit_event: Option<Event<()>>,
+}
+
+impl Engine {
+    /// Initialize the engine.
+    /// Engine is expected to be initialized after the platform, so reasonably
+    /// it takes platform-dependent structures while being initialized.
+    pub fn new() -> Self {
+        let scene_manager = SceneManager::new();
+        let system_manager = SystemManager::new();
+        Self {
+            scene_manager,
+            system_manager,
+            assets_model_manager: None,
+            winit_event: None,
+        }
+    }
+
+    /// Run the first frame, load the world.
+    pub fn initialize(&mut self) {
+        // Engine Loading Stage 1: initialize systems
+        for (system_id, system) in self.system_manager.systems.iter_mut() {
+            system.initialize();
+        }
+
+        let mut ctx = SystemContext {
+            scene: self.scene_manager.current_mut(),
+            event: self.winit_event.clone(),
+        };
+
+        // Engine Loading Stage 2: load world
+        for (system_id, system) in self.system_manager.systems.iter_mut() {
+            system.load_world(&mut ctx);
+        }
+    }
+
+    /// Runs every frame
+    pub fn update(&mut self) {
+        let mut ctx = SystemContext {
+            scene: self.scene_manager.current_mut(),
+            event: self.winit_event.clone(),
+        };
+
+        for (system_id, system) in self.system_manager.systems.iter_mut() {
+            system.update(&mut ctx);
+        }
+    }
+
+    pub fn set_winit_event(&mut self, event: Event<()>) {
+        self.winit_event = Some(event);
+    }
+
+    pub fn set_model_manager(&mut self, model_manager: ModelManagerRef) {
+        self.assets_model_manager = Some(model_manager);
+    }
+
+    // pub fn build_system_context(&mut self) -> SystemContext {
+    //     SystemContext {
+    //         scene: self.scene_manager.current_mut(),
+    //     }
+    // }
+}

core/src/lib.rs

@@ -0,0 +1,7 @@
+mod scene;
+mod engine;
+pub mod system;
+
+pub use scene::{Scene, SceneManager};
+pub use engine::Engine;
+pub use system::{System, SystemManager};

core/src/scene.rs

@@ -0,0 +1,74 @@
+use std::collections::HashMap;
+use std::path::{Path, PathBuf};
+
+pub struct Scene {
+    title: String,
+    world: hecs::World,
+    skybox_texture_path: Option<PathBuf>,
+}
+
+impl Scene {
+    pub fn new(title: String, skybox_texture_path: Option<PathBuf>) -> Self {
+        Self {
+            title,
+            world: hecs::World::new(),
+            skybox_texture_path,
+        }
+    }
+}
+
+impl AsRef<Scene> for Scene {
+    fn as_ref(&self) -> &Scene {
+        &self
+    }
+}
+
+impl AsMut<Scene> for Scene {
+    fn as_mut(&mut self) -> &mut Scene {
+        self
+    }
+}
+
+type SceneID = String;
+
+pub struct SceneManager {
+    scenes: HashMap<SceneID, Scene>,
+    active_scene: Option<SceneID>,
+}
+
+impl SceneManager {
+    pub fn new() -> Self {
+        let scenes = HashMap::new();
+        Self {
+            scenes,
+            active_scene: None,
+        }
+    }
+
+    pub fn current(&self) -> &Scene {
+        match &self.active_scene {
+            Some(id) => self.scenes[id].as_ref(),
+            None => panic!("No active scene"),
+        }
+
+    }
+
+    pub fn current_mut(&mut self) -> &mut Scene {
+        match &mut self.active_scene {
+            Some(id) => self.scenes.get_mut(id.as_mut()).unwrap().as_mut(),
+            None => panic!("No active scene"),
+        }
+    }
+
+    pub fn set_active_scene(&mut self, scene: SceneID) {
+        self.active_scene = Some(scene);
+    }
+
+    pub fn add_scene(&mut self, id: SceneID, scene: Scene) {
+        self.scenes.insert(id, scene);
+    }
+
+    pub fn remove_scene(&mut self, id: SceneID) {
+        self.scenes.remove(&id);
+    }
+}

core/src/system.rs

@@ -0,0 +1,37 @@
+use crate::Scene;
+use indexmap::IndexMap;
+use winit::event::Event;
+
+pub struct SystemContext<'a> {
+    // TODO: time delta etc.
+    pub scene: &'a mut Scene,
+    pub event: Option<Event<()>>,
+}
+
+pub trait System {
+    /// Initialize the system.
+    fn initialize(&mut self);
+    /// Spawn the first entities of the world.
+    fn load_world(&mut self, ctx: &mut SystemContext);
+    fn update(&mut self, ctx: &mut SystemContext);
+}
+
+pub type SystemID = String;
+pub struct SystemManager {
+    pub systems: IndexMap<SystemID, Box<dyn System>>,
+}
+
+impl SystemManager {
+    pub fn new() -> Self {
+        let systems = IndexMap::default();
+        Self { systems }
+    }
+
+    pub fn add_system(&mut self, id: SystemID, system: Box<dyn System>) {
+        self.systems.insert(id, system);
+    }
+
+    pub fn remove_system(&mut self, id: SystemID) {
+        self.systems.shift_remove(&id);
+    }
+}