compile it

README.md

@@ -0,0 +1,10 @@
+## Build `ENGINE`
+
+```sh
+# install rollup
+npm install --global rollup
+
+# compile engine
+cd src/js/
+rollup main.js --file engine.js --format es
+```

src/js/.gitignore

@@ -1 +1,2 @@
 game.js*
+engine.js

src/js/main.js

@@ -1,6 +1,7 @@
-import { Scene } from './scene.js';
 import { Settings } from './settings.js';
 import { Pointer } from './pointer.js';
+import { Scene, SceneLayer } from './scene.js';
+import { Rect, StrokeRect, Sprite, TiledSprite } from './objects.js';
 
 export class App {
   #version;
@@ -66,3 +67,5 @@ export class App {
     requestAnimationFrame(this.run);
   };
 }
+
+export { Scene, SceneLayer, Rect, StrokeRect, Sprite, TiledSprite };