arrays - 从两个数组中删除匹配的图像

Question

我正在制作一个 snap 游戏，我试图从数组中删除两个图像，这样当第一张随机卡和第二张随机卡匹配时它们就不会再次出现。有什么办法可以做到这一点？谢谢

var cardNamesArray: [String] = ["sad", "sleepy","angry"]

var cardNamesArray2: [String] = ["triste", "cansado","enfadado"]

为第一个数组生成一张随机卡片

   firstRandomNumber = Int (arc4random_uniform(3))
   let firstCardString:String = self.cardNamesArray[firstRandomNumber]
   self.FirstCardImageView.image = UIImage(named: firstCardString)

为第二个数组生成一张随机卡片

   SecondRandomNumber = Int (arc4random_uniform(3))
   let SecondCardString:String = self.cardNamesArray2[SecondRandomNumber]
   self.SecondCardImageView.image = UIImage(named: SecondCardString)

如果他们匹配玩家得分 1 分

        @IBAction func SnapButtonTapped(sender: UIButton) {

        if firstRandomNumber == SecondRandomNumber {

        print("index match")

        self.playerScore += 1
        self.playerScoreLabel.text = String(self.playerScore

    }

Answer 1

为什么不尝试从数组本身中删除图像。一旦随机数匹配，您就可以做到!

if firstRandomNumber == SecondRandomNumber {

    print("index match") 
    self.playerScore += 1
    self.playerScoreLabel.text = String(self.playerScore
    cardNamesArray.removeAtIndex(firstRandomNumber)
    cardNamesArray2.removeAtIndex(SecondRandomNumber)

    if cardNamesArray.count == 0 && cardNamesArray2.count == 0{
        print("User Won")
    }else{
        print("Continue Playing")
    }
}

Crash Update:

用我的代码替换下面两行代码

firstRandomNumber = Int (arc4random_uniform(UInt32(cardNamesArray.count)))

SecondRandomNumber = Int(arc4random_uniform(UInt32(cardNamesArray2.count)))