rework occlusion events

src/main.rs

@@ -16,6 +16,7 @@ fn main() {
         .insert_resource(tiles::CurrentWorldSpriteState {
             state: tiles::TerrainSpriteState::Inactive,
         })
+        .insert_resource(camera::CameraMoved(true))
         .insert_resource(tiles::QuiltCache::default())
         .add_systems(PreStartup, tiles::initialize_textures)
         .add_plugins(
@@ -40,19 +41,13 @@ fn main() {
                 citizen::spawn_citizens,
             ),
         )
-        .add_systems(
-            FixedUpdate,
-            (tiles::build_quilted_terrain_sprites, camera::scroll_events),
-        )
-        .init_resource::<camera::CameraMoved>()
         .add_systems(
             Update,
             (
+                camera::scroll_events,
                 camera::camera_z_movement,
                 camera::camera_movement,
                 cursor::move_cursor,
-                tile::update_tile_visibility
-                    .run_if(|camera_moved: Res<camera::CameraMoved>| camera_moved.0),
             ),
         )
         .run();