chore(ecs): remove Event trait id method & take events by value

2 files changed, 14 insertions, 10 deletions

diff --git a/ecs/src/event.rs b/ecs/src/event.rs
index 9545318..6a4c3a8 100644
--- a/ecs/src/event.rs
+++ b/ecs/src/event.rs
@@ -4,10 +4,7 @@ use std::hash::Hash;
 
 use seq_macro::seq;
 
-pub trait Event: Debug + 'static
-{
-    fn id(&self) -> Id;
-}
+pub trait Event: Debug + 'static {}
 
 /// The ID of a [`Event`].
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
diff --git a/ecs/src/lib.rs b/ecs/src/lib.rs
index ce1a7d1..c93781d 100644
--- a/ecs/src/lib.rs
+++ b/ecs/src/lib.rs
@@ -103,19 +103,22 @@ impl World
         self.data.single_component_storage.insert(single_component)
     }
 
-    pub fn register_system<'this, SystemImpl>(
+    pub fn register_system<'this, EventT, SystemImpl>(
         &'this mut self,
-        event: &impl Event,
+        event: EventT,
         system: impl System<'this, SystemImpl>,
-    )
+    ) where
+        EventT: Event,
     {
         self.systems.push(system.into_type_erased());
 
         self.data
             .events
-            .entry(event.id())
+            .entry(EventId::of::<EventT>())
             .or_default()
             .push(self.systems.len() - 1);
+
+        drop(event);
     }
 
     /// Emits a event, running all systems listening to the event for each compatible
@@ -123,9 +126,13 @@ impl World
     ///
     /// # Panics
     /// Will panic if a system has dissapeared.
-    pub fn emit(&self, event: &impl Event)
+    pub fn emit<EventT>(&self, event: EventT)
+    where
+        EventT: Event,
     {
-        self.emit_event_by_id(event.id());
+        self.emit_event_by_id(EventId::of::<EventT>());
+
+        drop(event);
     }
 
     pub fn query<Comps>(&self) -> Query<Comps>