feat(ecs): add event trait

1 files changed, 11 insertions, 5 deletions

diff --git a/ecs/examples/multiple_queries.rs b/ecs/examples/multiple_queries.rs
index 9a699c2..ed02a69 100644
--- a/ecs/examples/multiple_queries.rs
+++ b/ecs/examples/multiple_queries.rs
@@ -1,5 +1,6 @@
 use std::fmt::Display;
 
+use ecs::event::{Event, Id as EventId};
 use ecs::{Component, Query, World};
 
 #[derive(Component)]
@@ -57,16 +58,21 @@ fn do_attacks(
 }
 
 #[derive(Debug, PartialEq, Eq, Hash)]
-enum Event
+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, do_attacks);
+    world.register_system(&Start, do_attacks);
 
     world.create_entity((
         Health { health: 100 },
@@ -86,5 +92,5 @@ fn main()
     world.create_entity((AttackStrength::Strong,));
     world.create_entity((AttackStrength::Weak,));
 
-    world.emit(&Event::Start);
+    world.emit(&Start);
 }