update welcome

test/js/engine.js

@@ -0,0 +1 @@
+../../dist/engine-beeeeeeta.js

test/js/game.example.js

@@ -0,0 +1,62 @@
+import { App } from './app.js';
+import { Scene, SceneLayer } from './scene.js';
+import { Rect, StrokeRect, Sprite } from './objects.js';
+
+// init player
+let Player = {
+  x: 400 / 2 - 5,
+  y: 400 / 2 - 5,
+  rect: null,
+};
+Player.rect = new Rect(Player.x, Player.y, 10, 10, 'black');
+Player.rect.ticker = () => {
+  Player.rect.y = Player.y;
+  Player.rect.x = Player.x;
+};
+
+// init scene layers
+let layerBg = new SceneLayer('background', [
+  new Rect(50, 50, 100, 100, 'red'),
+  new StrokeRect(150, 150, 40, 40, 'green', 'blue', 1),
+]);
+
+let layerHud = new SceneLayer('hud', [
+  new Sprite('compass.png', 15, 15),
+  new Sprite('compass-arrow.png', 27, 21),
+]);
+
+let layerInstances = new SceneLayer('Instances', [Player.rect], { debug: true });
+
+// init app
+let app = new App(document.querySelector('canvas'), 400, 400);
+
+// init scene
+let firstScene = new Scene(app.canvas, app.context, 400, 400);
+firstScene.addLayer(layerBg);
+firstScene.addLayer(layerInstances);
+firstScene.addLayer(layerHud);
+
+app.scene = firstScene;
+
+// add app view in document
+window.addEventListener('DOMContentLoaded', () => {
+  document.body.appendChild(app.view);
+});
+
+// player key press listener
+document.addEventListener('keydown', (e) => {
+  switch (e.code) {
+    case 'ArrowUp':
+      Player.y -= 1;
+      break;
+    case 'ArrowDown':
+      Player.y += 1;
+      break;
+    case 'ArrowLeft':
+      Player.x -= 1;
+      break;
+    case 'ArrowRight':
+      Player.x += 1;
+      break;
+  }
+});