安卓游戏控制

Question

帮我在我的Adnroid内游戏控制）

我有2个按钮： 移动左，向右移动。如果我们按左边精灵向左移动，如果我们按右精灵移动。

这里是代码：

public boolean onTouchEvent(MotionEvent event) { 
    if (event.getAction() == MotionEvent.ACTION_DOWN || 
       event.getAction() == MotionEvent.ACTION_MOVE){ 
     touchX = event.getX(); 
    } 
    if(touchX == arrow_leftX){ 
     gameLoopThread.setRunning(false); 
    } 
    else if(touchX == arrow_leftX){ 
     playerX = playerX - xSpeed; 
    } 
    else if(touchX == arrow_rightX){ 
     playerX = playerX - xSpeed; 
    } 
    else if(touchX == arrow_rightX){ 
     gameLoopThread.setRunning(false); 
    } 
    return super.onTouchEvent(event); 
} 

所以，问题是：

它移动只剩下，我不知道如何移动吗？

Answer 1

The Problem is here i think 

else if(touchX == arrow_rightX){ 
     playerX = playerX - xSpeed; 
    } 


else if(touchX == arrow_rightX){ 

// Here You can see that you are again subtracting the x axis from 
// playerX 
// it is clear that you are moving your image with this 
// but if you decrease value from x it shall move to lext 
// to move it to right you need to increase its value 

     playerX = playerX + xSpeed; 
    }