ios - 将 while 循环添加到 didMoveToView

Question

我正在尝试创建一款回合制游戏，该游戏会一直进行到 13 轮结束。然而，在我创建了一个无限 while 循环(仅在 13 轮后才会中断)之后，场景从未加载。为什么didMoveToView中的代码是在场景显示之前执行的？有办法解决这个问题还是我可能做错了什么？

override func didMoveToView(view: SKView) {
    /* Setup your scene here */
    view.ignoresSiblingOrder = true
    roundFirstCard = Card(key: "2c")
    var actions = [SKAction]()
    let cards = makeDeck()
    for c in cards {
        let card = Card(key: c)
        card.name = card.key
        card.position = CGPointMake(500, 400)
        addChild(card)
        giveCardToCorrectPlayer(cards.indexOf(c)!, c: card)
        actions.append(SKAction.runAction(SKAction.moveTo(getTargetLocationForCard(cards.indexOf(c)!), duration: 1.0), onChildWithName: card.name!))
        actions.append(SKAction.waitForDuration(0.05))
    }
    actions.append(SKAction.waitForDuration(1.0))
    playerCardSets = [player1Cards, player2Cards, player3Cards, player4Cards]
    self.runAction(SKAction.sequence(actions), completion: {self.spreadCards()})
    currentPlayer = 1
    while true {}
}

Answer 1

您不需要 while 循环，尤其是当您的场景是圆形时。所以我想你在问题中写的这个场景是你游戏的典型回合。您可以将轮数保存在 NSUserDefaults 中，例如在 AppDelegate 中:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
     NSUserDefaults.standardUserDefaults().setInteger(0, forKey: "roundCounter")
     NSUserDefaults.standardUserDefaults().synchronize()
     return true
}

所以在你的场景中你知道你的回合是什么:

override func didMoveToView(view: SKView) {
    /* Setup your scene here */
    var roundCounter = NSUserDefaults.standardUserDefaults().integerForKey("roundCounter")
    roundCounter += 1 //Start new round
    guard let r = roundCounter where r > 13 {
        gameOver() //launch gameOver function
        return
    }
    // do your stuff
    // save the actual round number 
    NSUserDefaults.standardUserDefaults().setInteger(roundCounter, forKey: "roundCounter")
    NSUserDefaults.standardUserDefaults().synchronize()
}

func gameOver() {
   // reset to zero your round counter
   NSUserDefaults.standardUserDefaults().setInteger(0, forKey: "roundCounter")
   NSUserDefaults.standardUserDefaults().synchronize()
   //do your stuff
}