1 files changed, 31 insertions, 29 deletions

diff --git a/engine/src/lib.rs b/engine/src/lib.rs
index abf26f5..6ccba53 100644
--- a/engine/src/lib.rs
+++ b/engine/src/lib.rs
@@ -2,46 +2,39 @@
 #![allow(clippy::needless_pass_by_value)]
 
 use ecs::component::Sequence as ComponentSequence;
-use ecs::event::component::TypeTransformComponentsToAddedEvents;
-use ecs::event::{Event, Sequence as EventSequence};
 use ecs::extension::Extension;
+use ecs::pair::Pair;
+use ecs::phase::PRE_UPDATE as PRE_UPDATE_PHASE;
 use ecs::sole::Sole;
 use ecs::system::{Into, System};
-use ecs::tuple::Reduce as TupleReduce;
 use ecs::uid::Uid;
 use ecs::{SoleAlreadyExistsError, World};
 
+use crate::asset::{Assets, Extension as AssetExtension};
 use crate::delta_time::{update as update_delta_time, DeltaTime, LastUpdate};
-use crate::event::{
-    Conclude as ConcludeEvent,
-    PostPresent as PostPresentEvent,
-    PreUpdate as PreUpdateEvent,
-    Present as PresentEvent,
-    Update as UpdateEvent,
-};
 
 mod opengl;
-mod shader_preprocessor;
 mod util;
+mod work_queue;
 
+pub mod asset;
 pub mod camera;
+pub mod collision;
 pub mod data_types;
 pub mod delta_time;
 pub mod draw_flags;
-pub mod event;
 pub mod file_format;
+pub mod image;
 pub mod input;
 pub mod lighting;
 pub mod material;
 pub mod math;
 pub mod mesh;
-pub mod performance;
+pub mod model;
 pub mod projection;
 pub mod renderer;
-pub mod shader;
 pub mod texture;
 pub mod transform;
-pub mod vertex;
 pub mod window;
 
 pub extern crate ecs;
@@ -49,13 +42,7 @@ pub extern crate ecs;
 pub(crate) use crate::data_types::matrix;
 pub use crate::data_types::{color, vector};
 
-type EventOrder = (
-    PreUpdateEvent,
-    UpdateEvent,
-    PresentEvent,
-    PostPresentEvent,
-    ConcludeEvent,
-);
+const INITIAL_ASSET_CAPACITY: usize = 128;
 
 #[derive(Debug)]
 pub struct Engine
@@ -74,30 +61,45 @@ impl Engine
         world.add_sole(DeltaTime::default()).ok();
 
         world.register_system(
-            PreUpdateEvent,
+            *PRE_UPDATE_PHASE,
             update_delta_time
                 .into_system()
                 .initialize((LastUpdate::default(),)),
         );
 
+        let mut assets = Assets::with_capacity(INITIAL_ASSET_CAPACITY);
+
+        crate::model::set_asset_importers(&mut assets);
+        crate::image::set_asset_importers(&mut assets);
+
+        world.add_extension(AssetExtension { assets });
+
         Self { world }
     }
 
     pub fn spawn<Comps>(&mut self, components: Comps) -> Uid
     where
-        Comps: ComponentSequence + TupleReduce<TypeTransformComponentsToAddedEvents>,
-        Comps::Out: EventSequence,
+        Comps: ComponentSequence,
     {
         self.world.create_entity(components)
     }
 
     pub fn register_system<'this, SystemImpl>(
         &'this mut self,
-        event: impl Event,
+        phase_euid: Uid,
+        system: impl System<'this, SystemImpl>,
+    )
+    {
+        self.world.register_system(phase_euid, system);
+    }
+
+    pub fn register_observer_system<'this, SystemImpl>(
+        &'this mut self,
         system: impl System<'this, SystemImpl>,
+        event: Pair<Uid, Uid>,
     )
     {
-        self.world.register_system(event, system);
+        self.world.register_observer_system(system, event);
     }
 
     /// Adds a globally shared singleton value.
@@ -115,9 +117,9 @@ impl Engine
     }
 
     /// Runs the event loop.
-    pub fn start(&self)
+    pub fn start(&mut self)
     {
-        self.world.event_loop::<EventOrder>();
+        self.world.start_loop();
     }
 }