1 files changed, 3 insertions, 8 deletions
diff --git a/ecs/examples/optional_component.rs b/ecs/examples/optional_component.rs
index e47bf2e..bcc0c54 100644
--- a/ecs/examples/optional_component.rs
+++ b/ecs/examples/optional_component.rs
@@ -1,4 +1,4 @@
-use ecs::event::Event;
+use ecs::phase::UPDATE as UPDATE_PHASE;
 use ecs::{Component, Query, World};
 
 #[derive(Debug, Component)]
@@ -48,16 +48,11 @@ fn pet_cats(query: Query<(CatName, PettingCapacity, Option<Aggressivity>)>)
     }
 }
 
-#[derive(Debug)]
-struct PettingTime;
-
-impl Event for PettingTime {}
-
 fn main()
 {
     let mut world = World::new();
 
-    world.register_system(PettingTime, pet_cats);
+    world.register_system(*UPDATE_PHASE, pet_cats);
 
     world.create_entity((
         CatName { name: "Jasper".to_string() },
@@ -82,5 +77,5 @@ fn main()
         Aggressivity::Low,
     ));
 
-    world.emit(PettingTime);
+    world.step();
 }