feat(ecs): add event trait

1 files changed, 12 insertions, 6 deletions

diff --git a/ecs/examples/simple.rs b/ecs/examples/simple.rs
index 76d9538..9983c4a 100644
--- a/ecs/examples/simple.rs
+++ b/ecs/examples/simple.rs
@@ -1,3 +1,4 @@
+use ecs::event::{Event, Id as EventId};
 use ecs::{Component, Query, World};
 
 #[derive(Component)]
@@ -19,17 +20,22 @@ fn say_hello(query: Query<(SomeData, Greeting)>)
     }
 }
 
-#[derive(Debug, PartialEq, Eq, Hash)]
-enum Event
+#[derive(Debug)]
+struct Start;
+
+impl Event for Start
 {
-    Start,
+    fn id(&self) -> EventId
+    {
+        EventId::of::<Self>()
+    }
 }
 
 fn main()
 {
-    let mut world = World::<Event>::new();
+    let mut world = World::new();
 
-    world.register_system(Event::Start, say_hello);
+    world.register_system(&Start, say_hello);
 
     world.create_entity((
         SomeData { num: 987_654 },
@@ -43,5 +49,5 @@ fn main()
         Greeting { greeting: "Good evening".to_string() },
     ));
 
-    world.emit(&Event::Start);
+    world.emit(&Start);
 }