如何使某些精灵在触摸后消失 - Cocos2d答案

【问题标题】：How to make certain sprite disappear after touched - Cocos2d如何使某些精灵在触摸后消失 - Cocos2d
【发布时间】：2014-02-24 18:01:57
【问题描述】：

我想知道如何在 MainPlayer 接触到星星后消失某些精灵（星星）。

谢谢。顺便说一句，我是 Cocos2d 的新手，我这样做只是为了好玩和教育目的。谢谢。

【问题讨论】：

标签： cocos2d-iphone

【解决方案1】：

如果你想在 cocos2d 中检测到触摸，你需要在你的 init 方法中将isTouchEnabled 属性设置为YES。您现在可以利用触摸事件。

接下来，创建新方法：

- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    //This method gets triggered every time a tap is detected
    NSSet *allTouches = [event allTouches]; //Get all the current touches in the event
    UITouch *aTouch = [allTouches anyObject]; //Get one of the touches, multitouch is disabled, so there is only always going to be one.
    CGPoint pos = [aTouch locationInView:touch.view]; //Get the location of the touch
    CGPoint ccPos = [[CCDirector sharedDirector] convertToGL:pos]; //Convert that location to something cocos2d can use
    if (CGRectContainsPoint(yourSprite.boundingBox, ccPos)) //Method to check if a rectangle contains a point
    {
        yourSprite.visible = NO; //Make your sprite invisible
    }

}

您最终可能想要利用的其他方法如下：

- (void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event;

希望这会有所帮助。

【讨论】：