changeable z index, with occlusion

src/game.rs

@@ -68,7 +68,7 @@ fn setup_tilemap(commands: &mut Commands, asset_server: &Res<AssetServer>) {
     }
     for x in -15..15 {
         for y in -15..15 {
-            let position = Vec3::new(x as f32 * TILE_SIZE, y as f32 * TILE_SIZE, -14.);
+            let position = Vec3::new(x as f32 * TILE_SIZE, y as f32 * TILE_SIZE, -39.);
             commands.spawn(TilePrefab::bedrock(position, asset_server));
         }
     }

src/main.rs

@@ -11,7 +11,7 @@ mod tiles;
 
 fn main() {
     App::new()
-        .insert_resource(game::ZIndex(-5.0))
+        .insert_resource(game::ZIndex(0.0))
         .add_plugins(
             DefaultPlugins
                 .set(WindowPlugin {
@@ -33,7 +33,14 @@ fn main() {
                 camera::camera_movement,
                 citizen::citizen_movement,
                 tile::tile_item_sprite_update,
-                // tile::camera_z_movement.chain(tile::tile_sprite_occlusion),
+            ),
+        )
+        .init_resource::<tile::CameraMoved>()
+        .add_systems(
+            FixedUpdate,
+            (
+                tile::camera_z_movement,
+                tile::tile_sprite_occlusion.run_if(|camera_moved: Res<tile::CameraMoved>| camera_moved.0),
             ),
         )
         .add_systems(FixedUpdate, cursor::move_cursor)

src/tile.rs

@@ -55,17 +55,27 @@ pub struct DoorTile {
     pub locked: bool,
 }
 
-// pub fn camera_z_movement(
-//     keyboard_input: Res<ButtonInput<KeyCode>>,
-//     mut z_index: ResMut<game::ZIndex>,
-// ) {
-//     if keyboard_input.pressed(KeyCode::ShiftLeft) {
-//         z_index.0 -= 1.0;
-//     }
-//     if keyboard_input.pressed(KeyCode::ShiftRight) {
-//         z_index.0 += 1.0;
-//     }
-// }
+#[derive(Resource, Default)]
+pub struct CameraMoved(pub bool);
+
+// Modify camera_z_movement
+pub fn camera_z_movement(
+    keyboard_input: Res<ButtonInput<KeyCode>>,
+    mut z_index: ResMut<game::ZIndex>,
+    mut camera_moved: ResMut<CameraMoved>,
+) {
+    camera_moved.0 = false;
+    if keyboard_input.pressed(KeyCode::ShiftLeft) {
+        z_index.0 -= 1.0;
+        z_index.0 = z_index.0.clamp(-39.0, 5.0);
+        camera_moved.0 = true;
+    }
+    if keyboard_input.pressed(KeyCode::ShiftRight) {
+        z_index.0 += 1.0;
+        z_index.0 = z_index.0.clamp(-39.0, 5.0);
+        camera_moved.0 = true;
+    }
+}
 
 pub fn tile_sprite_occlusion(
     mut query: Query<(&mut Visibility, &Transform, &Tile), With<Tile>>,