如何實現觸摸並保持sprite套件？

Question

我最近開始使用sprite-kit。我知道touchesBegan只適用於一個水龍頭，但有什麼我可以使用，將認識到觸摸被壓制？

Answer 1

如果你想實現像當年拍攝的東西，你需要開始touchesBegan方法拍攝和停止touchesEnded方法拍攝：

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 
    [self startShooting]; 
} 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { 
    [self stopShooting]; 
} 

對於其他的目的，你可以添加UILongPressGestureRecognizer到SKScene

Answer 2

或者您可以使用更新方法的布爾值：

bool isTouching = false; 

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 
    isTouching = true; 
} 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { 
    isTouching = false; 
} 

-(void)update:(CFTimeInterval)currentTime { 
    if(isTouching){ 
     //shooting! 
    } 
} 

如果您願意，可以在isTouching塊內方便地組合您的方法，並使用touchesBegan讓我們同時瞄準子彈。

您不必擔心定時器的更新方法就會一直執行的代碼塊作爲isTouching ==真

Answer 3

var isTouching = false 

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { 
    handleTouches(touches) 
    isTouching = true; 
} 

override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) { 
    handleTouches(touches) 
    isTouching = false; 
} 

override func update(currentTime: NSTimeInterval) { 
    if isTouching{ 
     //Shoot CODE! 
    } 
}