1

test/src/game/DropItem.js

 import { Sprite, TextureCache } from 'spark-wrapper-fyge';
 export default class DropItem extends Sprite {
-  constructor() {
+  constructor(props) {
     super();
 
-    this.texture = TextureCache['box']
-    
-    this.y = 0;
+    this.texture = TextureCache['box'];
+
+    this.velocityX = this.initialVelocityX = props.initialVelocityX || 0;
+    this.velocityY = this.initialVelocityY = props.initialVelocityY || 0;
+
+    this.accelerationX = props.accelerationX || 0;
+    this.accelerationY = props.accelerationY || 0;
   }
 
-  updatePosition() {
-    this.y +=10;
+  onEnterFrame() {
+    this.velocityX += this.accelerationX;
+    this.velocityY += this.accelerationY;
+    this.x += this.velocityX;
+    this.y += this.velocityY;
   }
+
 }

test/src/game/main.js

-import { WidgetBase } from 'spark-wrapper-fyge';
+import { WidgetBase, Event } from 'spark-wrapper-fyge';
 import metaConfig from '../meta.json';
-import Root from './Root';
-
+import DropItem from './DropItem';
+/**
+ * 
+ * 
+ */
 class GameStage extends WidgetBase {
     onLaunched() {
-        // let label = new TextField();
-        // label.text = 'Hello CanvasWidget!';
-        // label.fillColor = '#000';
-        // label.size = 40;
-        // this.addChild(label);
+        this.drops = [];
+        this.stage.addEventListener(
+            Event.ENTER_FRAME,
+            this.onEnterFrame,
+            this
+        );
+        this.addDrops();
+    }
+
+    addDrops() {
+        const drop = new DropItem({
+            initialVelocityY: -50,
+            initialVelocityX: 10,
+            accelerationY:2
+        });
+        drop.y = 1000;
+        this.addChild(drop);
+        this.drops.push(drop);
+    }
 
-        this.addChild(new Root());
+    onEnterFrame() {
+        this.drops.forEach(i => i.onEnterFrame());
     }
 
     /**