1

test/src/game/Body.js

@@ -5,6 +5,7 @@ export default class Body extends Sprite {
 
     this.texture = TextureCache[props.display || 'box'];
 
+    this.restitution = props.restitution || 1
     this.velocityX = this.initialVelocityX = props.initialVelocityX || 0;
     this.velocityY = this.initialVelocityY = props.initialVelocityY || 0;
 

test/src/game/main.js

 import { WidgetBase, Event } from 'spark-wrapper-fyge';
 import metaConfig from '../meta.json';
 import Body from './Body';
-
+let ground;
 class GameStage extends WidgetBase {
     onLaunched() {
         this.bodys = [];
@@ -11,65 +11,46 @@ class GameStage extends WidgetBase {
             this
         );
         this.addbodys();
+        ground = this.stage.viewRect.height;
     }
 
     addbodys() {
-        const enemy = new Body({
-            display: 'enemy',
-            initialVelocityY: 1
+        const ball = new Body({
+            display: 'ball',
+            initialVelocityY: 2,
+            accelerationY: 2,
+            restitution:0.85
         });
 
-        const bullet = new Body({
-            display: 'bullet',
-            initialVelocityY: -4
+        const block = new Body({
+            display: 'box',
+            initialVelocityY: 2,
+            accelerationY: 2,
+            restitution:0.4
         });
 
-        enemy.x = 150;
-        enemy.y = 0;
-        bullet.x = 170;
-        bullet.y = 600;
-
-        this.addChild(enemy);
-        this.bodys.push(enemy);
+        block.x = 300;
 
-        this.addChild(bullet);
-        this.bodys.push(bullet);
+        this.addChild(block);
+        this.bodys.push(block);
+        this.addChild(ball);
+        this.bodys.push(ball);
     }
 
     onEnterFrame() {
-        this.bodys.forEach(i => i.onEnterFrame());
-
-        const isCollide = this.checkCollide(this.bodys[0], this.bodys[1])
-        if (isCollide)
-            this.stopGame();
-    }
-
-    checkCollide(A, B) {
-        const pointA = [A.x + A.width / 2, A.y + A.height / 2];
-        const pointB = [B.x + B.width / 2, B.y + B.height / 2];
-        const x0 = Math.abs(pointA[0] - pointB[0]);
-        const y0 = Math.abs(pointA[1] - pointB[1]);
-        const x1 = A.width/2 + B.width/2;
-        const y1 = A.height/2 + B.height/2;
-        return x0 < x1 && y0 < y1;
-    }
-
-    stopGame() {
-        this.stage.removeEventListener(
-            Event.ENTER_FRAME,
-            this.onEnterFrame,
-            this
-        );
+        this.bodys.forEach(i => {
+            i.onEnterFrame();
+            this.checkCollideGround(i);
+        });
     }
 
-    /**
-     * 销毁回调
-     */
-    onDestroy() {
-    }
-    start() {
-    }
-    stop() {
+    checkCollideGround(body) {
+        const y0 = body.y + body.height;
+        if (y0 > ground) {
+            body.y = ground - body.height;
+            body.velocityY = -body.velocityY * body.restitution;
+            
+        }
     }
 }