在Spritekit swift中保存分数

Question

我想保存一个在我的游戏中被称为果冻豆的分数。这些果冻豆可以作为虚拟货币使用，因此在某些时候也会受到应用内购买的影响。

所以我的问题是最好的方法是什么。游戏的首次参与者将从果酱豆总数为0开始。每当玩家升级时，他们就会得到10个果冻豆。这些将需要添加到整体虚拟货币中，以便可以花费。

如果玩家返回游戏，则应显示当前的果冻豆总数，并且这将照常增加。

我的代码如下所示：

import SpriteKit

class GameScene: SKScene {

// Set SKNodes
let buttonOne = SKSpriteNode(imageNamed: "buttonOne")
let buttonTwo = SKSpriteNode(imageNamed: "buttonTwo")
let buttonThree = SKSpriteNode(imageNamed: "buttonThree")
let menuButton = SKSpriteNode(imageNamed: "mainMenu")
let header = SKSpriteNode(imageNamed: "top")
var currentNumber = SKLabelNode()
var levelNumber = SKLabelNode()
var targetNumber = SKLabelNode()
var turnLabel = SKLabelNode()
var beanNumber = SKLabelNode()
let jellyBeanImg = SKSpriteNode(imageNamed: "jellyBean")

// Set Variable Numbers
var targetValue = Int()
var currentValue = Int()
var levelValue = Int()
var jellyBeanValue = Int()
var playerID = Int()
var aiValue = Int(arc4random() % 4)

// Set Booleans
var playedLast = false
var aiLost = false

override func didMoveToView(view: SKView) {
    otherElements()
    positionButtons()
    setText()
    jellyBean()
    self.targetValue = 21
    self.currentValue = 0
    self.levelValue = 1
    self.jellyBeanValue = Int()
}

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
    let touch = touches 
    let location = touch.first!.locationInNode(self)
    let node = self.nodeAtPoint(location)

    if (node.name == "buttonOne") {
        if !playedLast {
            currentValue++
            playerID = 1
            hasTargetReached()
            self.currentNumber.text = String(currentValue)
            print("You increased the value to " + String(currentValue))
            playedLast = true
            self.turnLabel.text = "AI Turn"
            delay(1) {
                self.playerAI()
            }
        }
    } else if (node.name == "buttonTwo") {
        if !playedLast {
            currentValue+=2
            playerID = 1
            hasTargetReached()
            self.currentNumber.text = String(currentValue)
            print("You increased the value to " + String(currentValue))
            playedLast = true
            self.turnLabel.text = "AI Turn"
            delay(1) {
                self.playerAI()
            }
        }
    } else if (node.name == "buttonThree") {
        if !playedLast {
            currentValue+=3
            playerID = 1
            hasTargetReached()
            self.currentNumber.text = String(currentValue)
            print("You increased the value to " + String(currentValue))
            playedLast = true
            self.turnLabel.text = "AI Turn"
            delay(1) {
                self.playerAI()
            }
        }
    } else if (node.name == "menuButton") {
        if let view = self.view {
            let scene = startScene(size: self.size)
            scene.scaleMode = .AspectFill
            view.presentScene(scene)
        }
    }

}

override func update(currentTime: CFTimeInterval) {
    /* Called before each frame is rendered */
    self.currentNumber.text = String(currentValue)
    self.levelNumber.text = "Level: " + String(levelValue)
    self.targetNumber.text = "Target: " + String(targetValue)
    self.beanNumber.text = String(jellyBeanValue)

}






func playerAI() {
    if !(currentValue >= (targetValue)-4) {
        currentValue+=Int(arc4random() % 3) + 1
        playerID = 2
        hasTargetReached()
        self.currentNumber.text = String(currentValue)
        print("AI increased the value to " + String(currentValue))
        playedLast = false
        self.turnLabel.text = "Your Turn"
    } else if (currentValue == (targetValue)-4) {
        currentValue+=3
        playerID = 2
        hasTargetReached()
        self.currentNumber.text = String(currentValue)
        print("AI increased the value to " + String(currentValue))
        playedLast = false
        self.turnLabel.text = "Your Turn"
    } else if (currentValue >= (targetValue)-3) {
        currentValue+=2
        playerID = 2
        hasTargetReached()
        self.currentNumber.text = String(currentValue)
        print("AI increased the value to " + String(currentValue))
        playedLast = false
        self.turnLabel.text = "Your Turn"
    } else if (currentValue >= (targetValue)-2) {
        currentValue+=1
        playerID = 2
        hasTargetReached()
        self.currentNumber.text = String(currentValue)
        print("AI increased the value to " + String(currentValue))
        playedLast = false
        self.turnLabel.text = "Your Turn"
    } else if (currentValue >= (targetValue)-1) {
        currentValue+=1
        playerID = 2
        hasTargetReached()
        self.currentNumber.text = String(currentValue)
        print("AI increased the value to " + String(currentValue))
        playedLast = false
        self.turnLabel.text = "Your Turn"
    }
}

// End Game

func endGame() {
    // save jellybeanvalue
    self.targetValue = 21
    self.currentValue = 0
    self.levelValue = 1
    self.levelNumber.text = "Level: " + String(levelValue)
    self.targetNumber.text = "Target: " + String(targetValue)
    self.turnLabel.text = "Your Turn"
    playedLast = false
    print("The game has been reset, Level " + String(levelValue))
}


// Delay AIs turn to play

func delay(delay:Double, closure:()->()) {
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(delay * Double(NSEC_PER_SEC))), dispatch_get_main_queue(), closure)
}

// Level Up, increase Jelly Bean total, increase the targetValue

func incrementLevel() {
    currentValue = 0
    levelValue++
    targetValue+=5
    jellyBeanValue+=10
    self.beanNumber.text = String(jellyBeanValue)
    self.currentNumber.text = String(currentValue)
    self.levelNumber.text = "Level: " + String(levelValue)
    self.targetNumber.text = "Target: " + String(targetValue)
    playedLast = false
    print("The Target Value is now " + String(targetValue) + " it is now Level " + String(levelValue))
}


// Check to see if the targetValue has been reached.

func hasTargetReached() {
    if (currentValue >= targetValue) {
        whoLost()
    }
}

// Find out who lost using the playerID

func whoLost() {
    if (playerID == 1) {
        aiLost = false
        print("Target Value has been reached by the player with the ID " + String(playerID) + " of whom lost the game. Game Over!")
        endGame()
    } else if (playerID == 2) {
        aiLost = true
        print("Target Value has been reached by the player with the ID " + String(playerID) + " of whom lost the game.")
        incrementLevel()
        playedLast = false
    }
}

// Position Decorative Elements

func otherElements() {
    backgroundColor = SKColor.whiteColor()
    header.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 8 * 7)
    header.size = CGSize(width: self.frame.width, height: self.frame.height / 4)
    header.zPosition = -1
    self.addChild(header)
}

// Position Buttons

func positionButtons() {
    buttonOne.position = CGPoint(x: self.frame.width / 4 - buttonOne.size.width / 3, y: self.frame.height / 2)
    buttonOne.size = CGSize(width: self.frame.width / 4, height: self.frame.width / 4)
    buttonOne.name = "buttonOne"

    buttonTwo.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 2)
    buttonTwo.size = CGSize(width: self.frame.width / 4, height: self.frame.width / 4)
    buttonTwo.name = "buttonTwo"

    buttonThree.position = CGPoint(x: self.frame.width / 4 * 3 + buttonThree.size.width / 3, y: self.frame.height / 2)
    buttonThree.size = CGSize(width: self.frame.width / 4, height: self.frame.width / 4)
    buttonThree.name = "buttonThree"

    menuButton.position = CGPoint(x: menuButton.size.width / 16 * 9, y: menuButton.size.height / 2 + menuButton.size.width / 16)
    menuButton.size = CGSize(width: self.frame.width / 5 * 2, height: menuButton.size.width / 3)
    menuButton.name = "menuButton"

    self.addChild(buttonOne)
    self.addChild(buttonTwo)
    self.addChild(buttonThree)
    self.addChild(menuButton)


}

// Position & Set Text

func setText() {
    currentNumber.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 6 * 4)
    currentNumber.text = String(currentValue)
    currentNumber.fontName = ("Fourfivesixseveneight")
    currentNumber.fontColor = SKColor.blackColor()
    currentNumber.fontSize = 400
    self.addChild(currentNumber)
    levelNumber.position = CGPoint(x: 50, y: self.frame.height / 16 * 15)
    levelNumber.text = ("Level: " + String(levelValue))
    levelNumber.fontName = ("Fourfivesixseveneight")
    levelNumber.fontColor = SKColor.whiteColor()
    levelNumber.fontSize = 100
    levelNumber.horizontalAlignmentMode = SKLabelHorizontalAlignmentMode.Left
    self.addChild(levelNumber)
    targetNumber.position = CGPoint(x: self.frame.width - 50, y: self.frame.height / 16 * 15)
    targetNumber.text = ("Target: " + String(targetValue))
    targetNumber.fontName = ("Fourfivesixseveneight")
    targetNumber.fontColor = SKColor.whiteColor()
    targetNumber.fontSize = 100
    targetNumber.horizontalAlignmentMode = SKLabelHorizontalAlignmentMode.Right
    self.addChild(targetNumber)
    turnLabel.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 3)
    turnLabel.text = ("Your Turn")
    turnLabel.fontName = ("Fourfivesixseveneight")
    turnLabel.fontColor = SKColor.blackColor()
    turnLabel.fontSize = 100
    self.addChild(turnLabel)
}


// Set Jelly Beans

func jellyBean() {
    jellyBeanImg.position = CGPoint(x: self.frame.width / 16 * 15, y: menuButton.size.height / 2 + menuButton.size.width / 16)
    jellyBeanImg.size = CGSize(width: self.frame.width / 8, height: self.frame.width / 8)
    self.addChild(jellyBeanImg)
    beanNumber.position = CGPoint(x: self.frame.width - jellyBeanImg.size.width, y: jellyBeanImg.size.height / 2)
    beanNumber.text = String(jellyBeanValue)
    beanNumber.fontName = ("Fourfivesixseveneight")
    beanNumber.fontColor = SKColor.blackColor()
    beanNumber.fontSize = 80
    beanNumber.horizontalAlignmentMode = SKLabelHorizontalAlignmentMode.Right
    self.addChild(beanNumber)
}

}

目前endGame（）函数仅重置游戏，将来它会带你到gameover场景。我希望你能提供帮助，如果你需要更多信息，请不要害怕问。

Answer 1

NSUserDefaults是保存游戏分数的正确工具。它允许您在持久存储上保存数据。因此，下次用户运行游戏时，该数据将可用。

保存

var jellyBeanValue = 3
NSUserDefaults.standardUserDefaults().setInteger(3, forKey: "jellyBeanValue")

正在加载（即使应用程序重新启动后）

var jellyBeanValue = NSUserDefaults.standardUserDefaults().integerForKey("jellyBeanValue")

更多类型

您可以使用以下方法保存/加载其他类型的数据

func setBool(value: Bool, forKey defaultName: String)
func boolForKey(defaultName: String) -> Bool   

func setFloat(value: Float, forKey defaultName: String)
func floatForKey(defaultName: String) -> Float

func setDouble(value: Double, forKey defaultName: String)
func doubleForKey(defaultName: String) -> Double

如果您需要保存自定义类的实例，可以使用

func setObject(value: AnyObject?, forKey defaultName: String)
func objectForKey(defaultName: String) -> AnyObject?

但在这种情况下，请查看this。

的iCloud

NSUserDefaults将数据保存在设备的永久存储中。如果您希望在用户使用特定AppleID登录的所有Apple设备之间同步数据，则应使用iCloud。