Question

我试图在点击SKSpriteNodes时删除它们，但是，我无法获取我想要删除的节点，只创建了最新创建的节点。并且因为节点每秒产生一次，当我点击一个节点时它会删除下一个节点。这是我的代码：

class GameScene: SKScene {

var weapon = SKSpriteNode()
var badGuy = SKSpriteNode()

override func didMoveToView(view: SKView) {
    /* Setup your scene here */

    spawnBadGuy()
    let spawn = SKAction.runBlock(spawnBadGuy)
    let wait = SKAction.waitForDuration(1)

    let sequence = SKAction.sequence([spawn, wait])
    runAction(SKAction.repeatActionForever(sequence))


}
func spawnBadGuy(){
    badGuy.name = "badguy"
    badGuy = SKSpriteNode(imageNamed: "redBall")
    badGuy.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 2)
    badGuy.setScale(0)
    let scaleUp = SKAction.scaleTo(0.15, duration: 2)

    let moveToSide = SKAction.moveTo(CGPoint(x: CGFloat.random(min: 0 + 50, max: self.size.width - 50 ), y: CGFloat.random(min: 0 + 50, max: self.size.height - 50 )), duration: 2)
    badGuy.runAction(moveToSide)
    badGuy.runAction(scaleUp)


    self.addChild(badGuy)

}

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
   /* Called when a touch begins */

    for touch in touches {
        let location = touch.locationInNode(self)
        let touchedNode = self.nodeAtPoint(location)


        if touchedNode.name == "badguy"{

            badGuy.removeFromParent()

        }

我在两个完全不同的项目中遇到了同样的问题，并且无法找到解决方案。任何帮助都会非常感激！

Answer 1

因为您正在编写相同的变量。尝试：

func spawnBadGuy(){

    let localBadGuy = SKSpriteNode(imageNamed: "redBall")
    localBadGuy.name = "badguy"
    localBadGuy.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 2)
    localBadGuy.setScale(0)
    let scaleUp = SKAction.scaleTo(0.15, duration: 2)

    let moveToSide = SKAction.moveTo(CGPoint(x: CGFloat.random(min: 0 + 50, max: self.size.width - 50 ), y: CGFloat.random(min: 0 + 50, max: self.size.height - 50 )), duration: 2)
    localBadGuy.runAction(moveToSide)
    localBadGuy.runAction(scaleUp)
    self.addChild(localBadGuy)
}

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
   /* Called when a touch begins */

    for touch in touches {
        let location = touch.locationInNode(self)
        let touchedNode = self.nodeAtPoint(location)


        if touchedNode.name == "badguy"{

            touchedNode.removeFromParent()
        }
}

Answer 2

在Swift 4中

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    for touch in touches {
        let location = touch.location(in: self)
        let touchedNode = self.atPoint(location)
        if touchedNode.name == "badguy"{
            touchedNode.removeFromParent()
            break;
        }
    }
}

触摸时删除SKSpriteNode

2 个答案: