我有一个触摸开始的方法，但我不想让精灵在触摸两次时再次跳跃？

Question

我有这个 touches begin 方法，它会导致精灵跳跃。如果我继续点击精灵，它会不断上升。我想停止这个，但我还需要能够在大约 0.8 秒后跳过另一个物体。

  override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    /* Called when a touch begins */
    if moving.speed > 0  {
        for touch: AnyObject in touches {
            let location = touch.locationInNode(self)

            hurdie.physicsBody?.velocity = CGVectorMake(0, 0)
            hurdie.physicsBody?.applyImpulse(CGVectorMake(0, 30.0))


        }

Answer 1

当您第一次检测到触摸时，设置一个标志，这意味着触摸被禁止跳跃并启动计时器。当计时器触发时，您可以重置标志。在您的 touches begin 方法中，在允许新的跳跃之前检查标志。

请注意，如果游戏有暂停，那么您需要考虑计时器如何与其交互。

Answer 2

我建议你使用一个 bool 来知道玩家是否应该跳跃，并使用一个 NSTimer 来设置这个 bool，像这样：

var shouldJump = true;

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    /* Called when a touch begins */
    if moving.speed > 0  {
        for touch: AnyObject in touches {
            let location = touch.locationInNode(self)
            if (shouldJump){
                hurdie.physicsBody?.velocity = CGVectorMake(0, 0)
                hurdie.physicsBody?.applyImpulse(CGVectorMake(0, 30.0))
                shouldJump = false;
                var timer = NSTimer.scheduledTimerWithTimeInterval(0.8, target: self, selector: Selector("updateState"), userInfo: nil, repeats: false)
            }

        }
func updateState() {
     shouldJump = true;
     }

Answer 3

使用变量丢弃触摸：

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
/* Called when a touch begins */
    if touchEnabled {
        if moving.speed > 0  {
            for touch: AnyObject in touches {
                let location = touch.locationInNode(self)

                hurdie.physicsBody?.velocity = CGVectorMake(0, 0)
                hurdie.physicsBody?.applyImpulse(CGVectorMake(0, 30.0))
                touchEnabled = false
        }
    }
}

并在你的update函数中设置为真，你可以检查你的精灵是否在休息：

if hurdie.physicsBody?.resting {
    touchEnabled = true
}

我有一个触摸开始的方法，但我不想让精灵在触摸两次时再次跳跃？

I have a touches began method but I don't want the sprite to jump again if touched twice?

touchesbegan

ios

swift