separate state from rsc

src/default/app.rs

@@ -11,6 +11,13 @@ pub trait AppState {
     fn window_event(&mut self, event: WindowEvent, event_loop: &ActiveEventLoop);
     fn event(&mut self, event: Self::Event, event_loop: &ActiveEventLoop);
     fn exit(&mut self);
+
+    fn run()
+    where
+        Self: Sized,
+    {
+        App::<Self>::run();
+    }
 }
 
 pub struct App<State: AppState> {