swift - 如何将 UItapGesture 识别器指定为按钮的 CGpoint

Question

我正在制作一个游戏广告，但我很难制作一个跳转按钮。我已经创建了跳上跳下的 SKaction 序列，它的工作原理非常完美。

func JumpArrow () {
    self.addChild(jumpArrow)
    jumpArrow.position = CGPointMake(60, 145)
    jumpArrow.xScale = 1
    jumpArrow.yScale = 1
}

func heroJumpMovement () {
    let heroJumpAction = SKAction.moveToY(hero.position.y + 85, 
    duration: 0.5)
    let heroFallAction = SKAction.moveToY(hero.position.y , duration:
    0.5)

    let jumpWait:SKAction = SKAction.waitForDuration(CFTimeInterval(1)) 

    let heroMovementSequence:SKAction = 
    SKAction.sequence([heroJumpAction, heroFallAction ,jumpWait])
    hero.runAction(heroMovementSequence)

}
override func touchesBegan(touches: Set<UITouch>, withEvent
event:UIEvent?) {

    for touch in touches {

        let location = touch.locationInNode(self)
        let node = nodeAtPoint(location)

if node == jumpArrow {

           heroJumpMovement()
 }

但是，我有一个问题。如果您快速点击按钮，播放器将飞出屏幕。我希望我可以创建一个 UItapGestureRecognizer 并为点击创建一个延迟，这样你就不能每秒点击按钮 2-4 次，你只能点击一次。如果这是错误的方法，请告诉我

Answer 1

添加延迟是错误的做法。

相反，在您的 touchesBegan 函数中，在您调用 heroJumpMovement() 之前，您应该检查您的玩家是否在地面上.

另一种方法是检查最后一次跳转 SKActionSequence 是否完成。

要执行上述操作，您会得到类似这样的东西(未检查代码):

var canJump = true; // Variable will be true if we can jump

func JumpArrow () {
    self.addChild(jumpArrow)
    jumpArrow.position = CGPointMake(60, 145)
    jumpArrow.xScale = 1
    jumpArrow.yScale = 1
}

func heroJumpMovement () {
    let heroJumpAction = SKAction.moveToY(hero.position.y + 85, 
    duration: 0.5)
    let heroFallAction = SKAction.moveToY(hero.position.y , duration:
    0.5)

    let jumpWait:SKAction = SKAction.waitForDuration(CFTimeInterval(1)) 

    let heroMovementSequence:SKAction = 
    SKAction.sequence([heroJumpAction, heroFallAction ,jumpWait])
canJump = false; // We are about to jump so set this to false
    hero.runAction(heroMovementSequence, completion: {canJump = true;}) // Set the canJump variable back to true after we have landed

}
override func touchesBegan(touches: Set<UITouch>, withEvent
event:UIEvent?) {

    for touch in touches {

        let location = touch.locationInNode(self)
        let node = nodeAtPoint(location)

if node == jumpArrow {
          if (canJump) { // Make sure we are allowed to jump
           heroJumpMovement()
          }
 }

注意 canJump 变量。