Question

所以我只是在xcode中乱七八糟地遇到了一个问题。我创建了一个系统，每当用户触摸屏幕上的任何位置时，它就会创建一个用户触摸的随机颜色的SKLabel。如何在5秒钟之后将创建的SKLabel消失或从场景中移除？感谢

import SpriteKit

class GameScene: SKScene {

func createNateLabel(touchLocation: CGPoint){

    let nate = SKLabelNode(fontNamed: "Chalduster")

    let randomNumber = Int(arc4random_uniform(UInt32(8)))

    if randomNumber == 0 {

        nate.fontColor = UIColor.cyanColor()

    }

    if randomNumber == 1{

        nate.fontColor = UIColor.redColor()

    }
    if randomNumber == 2{

        nate.fontColor = UIColor.blueColor()

    }
    if randomNumber == 3{

        nate.fontColor = UIColor.purpleColor()

    }
    if randomNumber == 4{

        nate.fontColor = UIColor.yellowColor()

    }
    if randomNumber == 5{

        nate.fontColor = UIColor.greenColor()

    }
    if randomNumber == 6{

        nate.fontColor = UIColor.orangeColor()

    }
    if randomNumber == 7{

        nate.fontColor = UIColor.darkGrayColor()

    }
    if randomNumber == 8{

        nate.fontColor = UIColor.yellowColor()

    }

    if nate == true{

        let wait = SKAction.waitForDuration(3)

        nate.runAction(wait)


        nate.removeAllChildren()
    }


    nate.text = "Nate"
    nate.fontSize = 35
    nate.position = touchLocation
    addChild(nate)

}

override func didMoveToView(view: SKView) {

}

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

    let touch = touches.first! as UITouch
    let touchLocation = touch.locationInNode(self)

        createNateLabel(touchLocation)

    }
}

func update(currentTime: CFTimeInterval) {
    /* Called before each frame is rendered */
}

Answer 1

使用sequence SKAction代替当前的waitForDuration操作，其中包含waitForDuration操作，然后执行removeFromParent操作。

请注意，您当前的removeAllChildren调用不执行任何操作，因为您的标签节点没有要删除的子节点。

（编辑：更正后的组到序列）

（由@vacawama编辑）：我觉得不需要第二个答案，所以我将这个添加到@AliBeadle的答案中。这是一个功能createNateLabel，使用SKAction.sequence在5秒后删除标签。我还将颜色放在一个数组中，以便选择一个随机的清洁器：

func createNateLabel(touchLocation: CGPoint){

    let nate = SKLabelNode(fontNamed: "Chalkduster")

    let colors: [UIColor] = [.cyanColor(), .redColor(), .blueColor(), .purpleColor(), .yellowColor(), .greenColor(), .orangeColor(), .darkGrayColor(), .yellowColor()]

    nate.text = "Nate"
    nate.fontSize = 35
    nate.fontColor = colors[Int(arc4random_uniform(UInt32(colors.count)))]
    nate.position = touchLocation
    addChild(nate)

    let wait = SKAction.waitForDuration(5)
    let remove = SKAction.removeFromParent()
    let sequence = SKAction.sequence([wait, remove])

    nate.runAction(sequence)
}

一段时间后删除SKLabel

1 个答案: