如何在cocos2d的特定位置移动物体

。我有一个小酒吧（宽= 50，高= 10）。我必须手动移动柱塞。我只想移动x坐标（限制是x = 20（起点）到x = 50（终点））在y坐标上不移动。但是它在没有任何动作后将其移动50到10。 alt text 编码： -

- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 
    if (isPlaying) { 
     UITouch *touch = [[event allTouches] anyObject]; 

     touchPosition = [touch locationInView:touch.view]; 
     if (CGRectContainsPoint(para3.boundingBox,touchPoint) 
       isDragging = YES; 

     touchOffset = para3.position.y - touchPosition.y; 

    } 
- (void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { 
if (isPlaying) { 
UITouch *touch3 = [[event allTouches] anyObject]; 
     float distanceMoved = 
     ([touch3 locationInView:touch3.view].y + touchOffset) - 
     para3.position.y; 
     float newY = para3.position.y + distanceMoved; 
     if (newY > 67 && newY < 99) 
      para3.position = CGPointMake(newY , para3.position.y ); 
     //para3.contentSize/2 
     if (newY >67) 
      para3.position = CGPointMake(67, para3.position.y); 
     if (newY < 99) 
      para3.position = CGPointMake(99, para3.position.y); 
    } 
}

来源

2011-01-13 Srinivas

你必须寻找不同的坐标系的科科斯和UIView。所以你需要从locationInView转换点。我不记得确切。但CCDirector是实现这种方法的类。 ;-)我希望这有助于。 – 2011-01-13 20:36:11