Giant refactor for a better event-driven architecture

raidillon_core/src/systems.rs

@@ -0,0 +1,45 @@
+use hecs::World;
+use crate::assets::{AssetManager, Model, Material};
+use crate::events::{EventBus, GameEvent};
+
+pub trait System {
+    fn update(&mut self, world: &mut World, resources: &AssetManager<dyn Model, dyn Material>, events: &mut EventBus, dt: f32);
+    fn handle_event(&mut self, event: &GameEvent, world: &mut World);
+    fn name(&self) -> &'static str;
+}
+
+pub struct SystemRegistry {
+    systems: Vec<Box<dyn System>>,
+}
+
+impl SystemRegistry {
+    pub fn new() -> Self {
+        Self {
+            systems: Vec::new(),
+        }
+    }
+
+    pub fn add_system<S: System + 'static>(&mut self, system: S) {
+        self.systems.push(Box::new(system));
+    }
+
+    pub fn update_all(&mut self, world: &mut World, resources: &AssetManager<dyn Model, dyn Material>, events: &mut EventBus, dt: f32) {
+        for system in &mut self.systems {
+            system.update(world, resources, events, dt);
+        }
+    }
+
+    pub fn handle_event_for_all(&mut self, event: &GameEvent, world: &mut World) {
+        for system in &mut self.systems {
+            system.handle_event(event, world);
+        }
+    }
+
+    pub fn system_count(&self) -> usize {
+        self.systems.len()
+    }
+
+    pub fn clear(&mut self) {
+        self.systems.clear();
+    }
+}