Bevy 0.16 upgrade (#24)

src/camera.rs

@@ -103,7 +103,7 @@ fn update_ui(
                 ));
         } else {
             for entity in query.iter() {
-                commands.entity(entity).despawn_recursive();
+                commands.entity(entity).despawn();
             }
         }
     }
@@ -114,8 +114,8 @@ fn update(
         (&MainCamera, &mut Transform, &CameraRotationInput),
         (Without<CameraTarget>, Without<CameraArmRotation>),
     >,
-    target: Query<&GlobalTransform, (With<CameraTarget>, Without<CameraArmRotation>)>,
-    arm_rotation: Query<&Transform, With<CameraArmRotation>>,
+    target: Single<&GlobalTransform, (With<CameraTarget>, Without<CameraArmRotation>)>,
+    arm_rotation: Single<&Transform, With<CameraArmRotation>>,
     spatial_query: SpatialQuery,
     cam_state: Res<CameraState>,
 ) {
@@ -123,15 +123,11 @@ fn update(
         return;
     }
 
-    let Ok(target) = target.get_single().map(|t| t.translation()) else {
-        return;
-    };
+    let target = target.translation();
 
-    let Ok(arm_tf) = arm_rotation.get_single() else {
-        return;
-    };
+    let arm_tf = arm_rotation;
 
-    let Ok((camera, mut cam_transform, cam_rotation_input)) = cam.get_single_mut() else {
+    let Ok((camera, mut cam_transform, cam_rotation_input)) = cam.single_mut() else {
         return;
     };
 
@@ -159,13 +155,9 @@ fn update(
 
 fn rotate_view(
     controls: Res<ControlState>,
-    mut cam: Query<&mut CameraRotationInput>,
+    mut cam: Single<&mut CameraRotationInput>,
     movement: Res<PlayerMovement>,
 ) {
-    let Ok(mut cam) = cam.get_single_mut() else {
-        return;
-    };
-
     if !controls.view_mode {
         if movement.any_direction {
             cam.x = 0.;