Cocos2d-android (06) 屏幕触摸事件及坐标转换

为屏幕添加触摸事件，将左上角坐标转换为左下角坐标

 package com.arlen.cocos2d.touch01;

 import org.cocos2d.layers.CCLayer;
 import org.cocos2d.nodes.CCDirector;
 import org.cocos2d.types.CGPoint;

 import android.view.MotionEvent;

 public class GameLayer extends CCLayer {

     // 接受用户的触摸事件，首先必须对当前图层进行设置

     public GameLayer() {
         this.setIsTouchEnabled(true);
     }

     // 当用户开始触摸事执行该方法
     @Override
     public boolean ccTouchesBegan(MotionEvent event) {

         // 以屏幕的左上角为原点
         float x = event.getX();
         float y = event.getY();

         CGPoint point1 = CGPoint.ccp(x, y);
         // 将左上角坐标转换为左下角坐标
         CGPoint point2 = CCDirector.sharedDirector().convertToGL(point1);
         System.out.println("ccTouchesBegan:");
         System.out.println("左上角坐标：" + point1.x + "," + point1.y);
         System.out.println("左下角坐标" + point2.x + "," + point2.y);

         return super.ccTouchesBegan(event);
     }

     // 当用户手指离开屏幕是执行此方法
     @Override
     public boolean ccTouchesEnded(MotionEvent event) {
         System.out.println("ccTouchesEnded");
         return super.ccTouchesEnded(event);
     }

     // 当用户手指在屏幕上移动的时候执行此方法
     @Override
     public boolean ccTouchesMoved(MotionEvent event) {
         System.out.println("ccTouchesMoved");
         return super.ccTouchesMoved(event);
     }
 }