perf(ecs): store components using archetypes

1 files changed, 11 insertions, 0 deletions

diff --git a/ecs/src/system.rs b/ecs/src/system.rs
index 47872a6..868afa7 100644
--- a/ecs/src/system.rs
+++ b/ecs/src/system.rs
@@ -25,6 +25,8 @@ pub trait System<'world, Impl>: 'static
     #[must_use]
     fn initialize(self, input: Self::Input) -> Self;
 
+    fn prepare(&self, world_data: &WorldData);
+
     fn run<'this>(&'this self, world_data: &'world WorldData)
     where
         'this: 'world;
@@ -57,6 +59,13 @@ macro_rules! impl_system {
                     self
                 }
 
+                fn prepare(&self, world_data: &WorldData)
+                {
+                    #(
+                        TParam~I::handle_pre_run(world_data);
+                    )*
+                }
+
                 fn run<'this>(&'this self, world_data: &'world WorldData)
                 where
                     'this: 'world
@@ -179,6 +188,8 @@ pub unsafe trait Param<'world>
     fn is_compatible<Other: Param<'world>>() -> bool;
 
     fn get_comparable() -> Box<dyn Any>;
+
+    fn handle_pre_run(_world_data: &WorldData) {}
 }
 
 pub struct NoInitParamFlag {}