如何在cocos2d的特定位置移動物體

。我有一個小酒吧（寬= 50，高= 10）。我必須手動移動柱塞。我只想移動x座標（限制是x = 20（起點）到x = 50（終點））在y座標上不移動。但是它在沒有任何動作後將其移動50到10。 alt text 編碼： -

- (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); 
    } 
}

來源

2011-01-13 Srinivas

你必須尋找不同的座標系的科科斯和UIView。所以你需要從locationInView轉換點。我不記得確切。但CCDirector是實現這種方法的類。 ;-)我希望這有助於。 – 2011-01-13 20:36:11