use happy_feet as kinematic character controller (#42)

src/camera.rs

@@ -48,7 +48,7 @@ pub fn plugin(app: &mut App) {
     app.init_resource::<CameraState>();
     app.add_systems(OnEnter(GameState::Playing), startup);
     app.add_systems(
-        Update,
+        PreUpdate,
         (update, update_ui, update_look_around, rotate_view).run_if(in_state(GameState::Playing)),
     );
 }
@@ -110,7 +110,7 @@ fn update(
         (&MainCamera, &mut Transform, &CameraRotationInput),
         (Without<CameraTarget>, Without<CameraArmRotation>),
     >,
-    target: Single<&GlobalTransform, (With<CameraTarget>, Without<CameraArmRotation>)>,
+    target_q: Single<&Transform, (With<CameraTarget>, Without<CameraArmRotation>)>,
     arm_rotation: Single<&Transform, With<CameraArmRotation>>,
     spatial_query: SpatialQuery,
     cam_state: Res<CameraState>,
@@ -119,7 +119,7 @@ fn update(
         return;
     }
 
-    let target = target.translation();
+    let target = target_q.translation;
 
     let arm_tf = arm_rotation;