在我的项目中，一切都很顺利，效果很好，除非我想在游戏中发生特定事件时添加SKLabelNode的1个实例。
然后问题是当事件发生时它不止一次地添加SKLabelNode并且它继续进行成千上万...
这是我的代码：
import SpriteKit
class GameScene: SKScene, SKPhysicsContactDelegate{
var isTouched: Bool = false
let lavaRoom = SKSpriteNode(imageNamed: "LavaRom")
let tileStone1 = SKSpriteNode(imageNamed: "TileStone")
let tileStone2 = SKSpriteNode(imageNamed: "TileStone")
let tileStone3 = SKSpriteNode(imageNamed: "TileStone")
let tileStone4 = SKSpriteNode(imageNamed: "TileStone")
let tileStone5 = SKSpriteNode(imageNamed: "TileStone")
let tileStone6 = SKSpriteNode(imageNamed: "TileStone")
let tileStone7 = SKSpriteNode(imageNamed: "TileStone")
let tileStone8 = SKSpriteNode(imageNamed: "TileStone")
let tileStone9 = SKSpriteNode(imageNamed: "TileStone")
let tileStone10 = SKSpriteNode(imageNamed: "TileStone")
let tileStone11 = SKSpriteNode(imageNamed: "TileStone")
let tileStone12 = SKSpriteNode(imageNamed: "TileStone")
let tileStone13 = SKSpriteNode(imageNamed: "TileStone")
let tileStone14 = SKSpriteNode(imageNamed: "TileStone")
let tileStone15 = SKSpriteNode(imageNamed: "TileStone")
let tileStone16 = SKSpriteNode(imageNamed: "TileStone")
let tileStone17 = SKSpriteNode(imageNamed: "TileStone")
let tileStone18 = SKSpriteNode(imageNamed: "TileStone")
let tileStone19 = SKSpriteNode(imageNamed: "TileStone")
let tileStone20 = SKSpriteNode(imageNamed: "TileStone")
let tileStone21 = SKSpriteNode(imageNamed: "TileStone")
let tileStone22 = SKSpriteNode(imageNamed: "TileStone")
let tileStone23 = SKSpriteNode(imageNamed: "TileStone")
let tileStone24 = SKSpriteNode(imageNamed: "TileStone")
let tileStone25 = SKSpriteNode(imageNamed: "TileStone")
let tileStone26 = SKSpriteNode(imageNamed: "TileStone")
let tileStone27 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop1 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop2 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop3 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop4 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop5 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop6 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop7 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop8 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop9 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop10 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop11 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop12 = SKSpriteNode(imageNamed: "TileStone")
let tileStoneTop13 = SKSpriteNode(imageNamed: "TileStone")
let player = SKSpriteNode(imageNamed: "PlayerBox")
let enemyBox = SKSpriteNode(imageNamed: "TileStone")
let playerInt : UInt32 = 0
let enemyInt : UInt32 = 1
override func didMoveToView(view: SKView) {
let invisibleNode = SKShapeNode(rect: CGRect(x: 0, y: 0, width: self.frame.size.width, height: self.frame.size.height))
invisibleNode.name = "box"
invisibleNode.fillColor = SKColor.redColor()
invisibleNode.strokeColor = SKColor.clearColor()
self.addChild(invisibleNode)
self.backgroundColor = UIColor(hue: 0.0194, saturation: 0.66, brightness: 0.89, alpha: 1.0)
player.size = CGSize(width: 50, height: 50)
player.position = CGPointMake(self.frame.size.width / 2 - 350, 190)
player.anchorPoint = CGPointZero
player.zPosition = 2
addChild(player)
enemyBox.size = CGSize(width: 50, height: 50)
enemyBox.position = CGPointMake(self.frame.size.width / 2, 215)
enemyBox.zPosition = 2
addChild(enemyBox)
tileStone1.size = CGSize(width: 100, height: 100)
tileStone1.anchorPoint = CGPointZero
tileStone1.position = CGPoint(x: 0, y: 90)
tileStone1.zPosition = 2
addChild(tileStone1)
tileStone2.size = CGSize(width: 100, height: 100)
tileStone2.zPosition = 2
tileStone2.anchorPoint = CGPointZero
tileStone2.position = CGPoint(x: 100, y: 90)
addChild(tileStone2)
tileStone3.size = CGSize(width: 100, height: 100)
tileStone3.zPosition = 2
tileStone3.anchorPoint = CGPointZero
tileStone3.position = CGPoint(x: 200, y: 90)
addChild(tileStone3)
tileStone4.size = CGSize(width: 100, height: 100)
tileStone4.zPosition = 2
tileStone4.anchorPoint = CGPointZero
tileStone4.position = CGPoint(x: 300, y: 90)
addChild(tileStone4)
tileStone5.size = CGSize(width: 100, height: 100)
tileStone5.anchorPoint = CGPointZero
tileStone5.position = CGPoint(x: 400, y: 90)
tileStone5.zPosition = 2
addChild(tileStone5)
tileStone6.size = CGSize(width: 100, height: 100)
tileStone6.anchorPoint = CGPointZero
tileStone6.position = CGPoint(x: 500, y: 90)
tileStone6.zPosition = 2
addChild(tileStone6)
tileStone7.size = CGSize(width: 100, height: 100)
tileStone7.anchorPoint = CGPointZero
tileStone7.position = CGPoint(x: 600, y: 90)
tileStone7.zPosition = 2
addChild(tileStone7)
tileStone8.size = CGSize(width: 100, height: 100)
tileStone8.anchorPoint = CGPointZero
tileStone8.position = CGPoint(x: 700, y: 90)
tileStone8.zPosition = 2
addChild(tileStone8)
tileStone9.size = CGSize(width: 100, height: 100)
tileStone9.anchorPoint = CGPointZero
tileStone9.position = CGPoint(x: 800, y: 90)
tileStone9.zPosition = 2
addChild(tileStone9)
tileStone10.size = CGSize(width: 100, height: 100)
tileStone10.anchorPoint = CGPointZero
tileStone10.position = CGPoint(x: 900, y: 90)
tileStone10.zPosition = 2
addChild(tileStone10)
addChild(tileStone11)
tileStone11.size = CGSize(width: 100, height: 100)
tileStone11.anchorPoint = CGPointZero
tileStone11.position = CGPoint(x: 1000, y: 90)
tileStone11.zPosition = 2
tileStone12.size = CGSize(width: 100, height: 100)
tileStone12.anchorPoint = CGPointZero
tileStone12.position = CGPoint(x: 1100, y: 90)
tileStone12.zPosition = 2
addChild(tileStone12)
tileStone13.size = CGSize(width: 100, height: 100)
tileStone13.anchorPoint = CGPointZero
tileStone13.position = CGPoint(x: 1200, y: 90)
tileStone13.zPosition = 2
addChild(tileStone13)
tileStone14.size = CGSize(width: 100, height: 100)
tileStone14.anchorPoint = CGPointZero
tileStone14.position = CGPoint(x: 1300, y: 90)
tileStone14.zPosition = 2
addChild(tileStone14)
tileStone15.size = CGSize(width: 100, height: 100)
tileStone15.anchorPoint = CGPointZero
tileStone15.position = CGPoint(x: 1400, y: 90)
tileStone15.zPosition = 2
addChild(tileStone15)
tileStone16.size = CGSize(width: 100, height: 100)
tileStone16.anchorPoint = CGPointZero
tileStone16.position = CGPoint(x: 1500, y: 90)
tileStone16.zPosition = 2
addChild(tileStone16)
tileStone17.size = CGSize(width: 100, height: 100)
tileStone17.anchorPoint = CGPointZero
tileStone17.position = CGPoint(x: 1600, y: 90)
tileStone17.zPosition = 2
addChild(tileStone17)
tileStone18.size = CGSize(width: 100, height: 100)
tileStone18.anchorPoint = CGPointZero
tileStone18.position = CGPoint(x: 1700, y: 90)
tileStone18.zPosition = 2
addChild(tileStone18)
tileStone19.size = CGSize(width: 100, height: 100)
tileStone19.anchorPoint = CGPointZero
tileStone19.position = CGPoint(x: 1800, y: 90)
tileStone19.zPosition = 2
addChild(tileStone19)
tileStone20.size = CGSize(width: 100, height: 100)
tileStone20.anchorPoint = CGPointZero
tileStone20.position = CGPoint(x: 1900, y: 90)
tileStone20.zPosition = 2
addChild(tileStone20)
tileStone21.size = CGSize(width: 100, height: 100)
tileStone21.anchorPoint = CGPointZero
tileStone21.position = CGPoint(x: 2000, y: 90)
tileStone21.zPosition = 2
addChild(tileStone21)
tileStone22.size = CGSize(width: 100, height: 100)
tileStone22.anchorPoint = CGPointZero
tileStone22.position = CGPoint(x: 2100, y: 90)
tileStone22.zPosition = 2
addChild(tileStone22)
tileStoneTop1.size = CGSize(width: 100, height: 100)
tileStoneTop1.anchorPoint = CGPointZero
tileStoneTop1.position = CGPoint(x: 0, y: 580)
tileStoneTop1.zPosition = 2
addChild(tileStoneTop1)
tileStoneTop2.size = CGSize(width: 100, height: 100)
tileStoneTop2.zPosition = 2
tileStoneTop2.anchorPoint = CGPointZero
tileStoneTop2.position = CGPoint(x: 100, y: 580)
addChild(tileStoneTop2)
tileStoneTop3.size = CGSize(width: 100, height: 100)
tileStoneTop3.zPosition = 2
tileStoneTop3.anchorPoint = CGPointZero
tileStoneTop3.position = CGPoint(x: 200, y: 580)
addChild(tileStoneTop3)
tileStoneTop4.size = CGSize(width: 100, height: 100)
tileStoneTop4.zPosition = 2
tileStoneTop4.anchorPoint = CGPointZero
tileStoneTop4.position = CGPoint(x: 300, y: 580)
addChild(tileStoneTop4)
tileStoneTop5.size = CGSize(width: 100, height: 100)
tileStoneTop5.anchorPoint = CGPointZero
tileStoneTop5.position = CGPoint(x: 400, y: 580)
tileStoneTop5.zPosition = 2
addChild(tileStoneTop5)
tileStoneTop6.size = CGSize(width: 100, height: 100)
tileStoneTop6.anchorPoint = CGPointZero
tileStoneTop6.position = CGPoint(x: 500, y: 580)
tileStoneTop6.zPosition = 2
addChild(tileStoneTop6)
tileStoneTop7.size = CGSize(width: 100, height: 100)
tileStoneTop7.anchorPoint = CGPointZero
tileStoneTop7.position = CGPoint(x: 600, y: 580)
tileStoneTop7.zPosition = 2
addChild(tileStoneTop7)
tileStoneTop8.size = CGSize(width: 100, height: 100)
tileStoneTop8.anchorPoint = CGPointZero
tileStoneTop8.position = CGPoint(x: 700, y: 580)
tileStoneTop8.zPosition = 2
addChild(tileStoneTop8)
tileStoneTop9.size = CGSize(width: 100, height: 100)
tileStoneTop9.anchorPoint = CGPointZero
tileStoneTop9.position = CGPoint(x: 800, y: 580)
tileStoneTop9.zPosition = 2
addChild(tileStoneTop9)
tileStoneTop10.size = CGSize(width: 100, height: 100)
tileStoneTop10.anchorPoint = CGPointZero
tileStoneTop10.position = CGPoint(x: 900, y: 580)
tileStoneTop10.zPosition = 2
addChild(tileStoneTop10)
tileStoneTop11.size = CGSize(width: 150, height: 100)
tileStoneTop11.anchorPoint = CGPointZero
tileStoneTop11.position = CGPoint(x: 1000, y: 580)
tileStoneTop11.zPosition = 2
addChild(tileStoneTop11)
tileStoneTop12.size = CGSize(width: 200, height: 100)
tileStoneTop12.anchorPoint = CGPointZero
tileStoneTop12.position = CGPoint(x: 1100, y: 5780)
tileStoneTop12.zPosition = 2
addChild(tileStoneTop12)
tileStoneTop13.size = CGSize(width: 100, height: 100)
tileStoneTop13.anchorPoint = CGPointZero
tileStoneTop13.position = CGPoint(x: 1100, y: 5780)
tileStoneTop13.zPosition = 2
// addChild(tileStoneTop13)
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch in touches {
let touchLocation = touch.locationInNode(self)
let touchedNode = nodeAtPoint(touchLocation)
if touchedNode.name == "box" {
isTouched = true
}
if touchedNode.name == "rerun"{
for node in self.nodesAtPoint(touchLocation) {
if node.name == "rerun" {
isTouched = false
node.removeFromParent()
}
}
}
}
}
let moveFactor:CGFloat = 0.5
override func update(currentTime: CFTimeInterval) {
var tileStoneArray = [tileStone1, tileStone2, tileStone3, tileStone4, tileStone5, tileStone6, tileStone7, tileStone8, tileStone9, tileStone10, tileStone11, tileStone12, tileStone13, tileStone14, tileStone15, tileStone16, tileStone17, tileStone18, tileStone19, tileStone20, tileStone21, tileStone22, tileStoneTop1, tileStoneTop2, tileStoneTop3, tileStoneTop4, tileStoneTop5, tileStoneTop6, tileStoneTop7, tileStoneTop8, tileStoneTop9, tileStoneTop10, tileStoneTop11, tileStoneTop12, tileStoneTop13]
if isTouched == false {
enemyBox.position = CGPoint(x: enemyBox.position.x - 10, y: 215)
}
if enemyBox.position.x < self.frame.minX - 100 {
enemyBox.position = CGPoint(x: self.frame.maxX, y: 215)
}
for tileStone1 in tileStoneArray {
if isTouched == false {
tileStone1.position = CGPoint(x: tileStone1.position.x - 10, y: tileStone1.position.y)
}
if (tileStone1.position.x < self.frame.minX - 100){
tileStone1.anchorPoint = CGPointZero
tileStone1.position = CGPoint(x: self.frame.maxX, y: tileStone1.position.y)
}
}
var score = 0;
func addGreatNode(){
let congratsLabel = SKLabelNode(fontNamed: "")
congratsLabel.name = "rerun"
congratsLabel.text = "Great!"
congratsLabel.fontSize = 65
congratsLabel.position = CGPoint(x: self.frame.size.width / 2, y: self.frame.size.height / 2)
congratsLabel.fontColor = SKColor.yellowColor()
addChild(congratsLabel)
}
if isTouched == true {
var xValuesEnemy = enemyBox.position.x
var xValuesPlayer = player.position.x
if xValuesPlayer < xValuesEnemy + 120 && xValuesPlayer > xValuesEnemy - 120 {
addGreatNode()
//This is where it adds the node infinitely
}
else {
}
}
}
}
This is a image of my node count climbing while in my game.
我知道我可以提高我的代码效率，但我很缺乏经验，但我正在研究它。
答案 0 :(得分：3)
您的addGreatNode()函数正在update:内被调用，该场景被场景调用，每秒最多60次。
还有一些提示：
将您的TileStones保存在集合中
将TileStones添加到场景时，请使用for或while循环。这将压缩您的代码。在每次迭代中，调整每个节点的位置。
SKLabelNode，则该逻辑应位于touchesBegan:内，且与update: