cocos2d ccTouchesMoved只移动精灵到右上角

Question

原谅我的基本问题，因为我对cocos2d很新，但我有一个问题移动一个精灵周围。该方法似乎做我想要的...只要它在正X和正Y方向（右上角）移动。如果我尝试将其向下或向左移动，则不起作用。

-(void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { 
    UITouch *myTouch = [touches anyObject]; 
    CGPoint point = [myTouch locationInView:[myTouch view]]; 
    point = [[CCDirector sharedDirector] convertToGL:point]; //create point location 
    CCNode *sprite = [self getChildByTag:kTagSprite]; //set sprite 
    CGRect spriteRect = CGRectMake(sprite.position.x, sprite.position.y, sprite.contentSize.width, sprite.contentSize.height); //create box around sprite and get position 
    if(CGRectContainsPoint(spriteRect, point)){ 
     [sprite setPosition:point]; //if my pointer is inside of the sprite box, move the sprite 
    } 
} 

谢谢。

编辑：加入我的init和标签参考

-(id) init{ 
    if((self = [super init])){ 
     self.isTouchEnabled = YES; 
     CCSprite *mySprite = [CCSprite spriteWithFile:@"sprite.png"]; 
     mySprite.position = ccp(240, 40); 
     [self addChild:mySprite z:0 tag:kTagSprite]; 
    } 
    return self; 
} 

，我宣布kTagSprite在：

enum{ 
    kTagSprite 
}; 

Answer 1

-(void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { 
    UITouch *myTouch = [touches anyObject]; 
    CGPoint point = [myTouch locationInView:[myTouch view]]; 
    point = [[CCDirector sharedDirector] convertToGL:point]; //create point location 
    CCSprite *sprite = [self getChildByTag:kTagSprite]; //set sprite 

    if(CGRectContainsPoint([sprite boundingBox], point)){ 
     [sprite setPosition:point]; //if my pointer is inside of the sprite box, move the sprite  CCLOG(@"THIS WILL BE CALLED"); 
    } 
} 

运行代码，并期待在控制台，看看日志会被称为..