ios - 使用枚举初始化卡片组

Question

我正在尝试为游戏 Sets 初始化一副纸牌，每张纸牌有 4 个参数:颜色、形状、阴影和纸牌上的形状数量。

我的 Card 类如下所示:

enum CardColor : Int {
    case red = 1
    case purple = 2
    case green = 3
}

enum CardShape : Int {
    case line = 1
    case snake = 2
    case diamond = 3
}

enum CardShade : Int {
    case empty = 1
    case filled = 2
    case stripes = 3
}

class Card {

    var color : CardColor
    var shape : CardShape
    var shade : CardShade
    var number : Int
    var image : String

    var isTapped = false
    var isMatched = false


    init(color : CardColor , shape : CardShape, shade : CardShade , number : Int) {
        self.color = color
        self.shape = shape
        self.shade = shade
        self.number = number

        self.image = "\(color.rawValue)\(shape.rawValue)\(shade.rawValue)\(number)"

    }
}

我找不到初始化卡片组的方法，我目前正在使用我手动制作的卡片数组:

cards = [Card(color: .red, shape: .diamond, shade: .filled, number: 1)... 

等等。

卡片看起来像这样:

Answer 1

For 循环在这里可以很好地工作。使用 4 个嵌套循环遍历属性并在内循环中创建一张新卡片:

将 CaseIterable 添加到您的枚举中，以便轻松访问所有案例:

enum CardColor : Int, CaseIterable {
    case red = 1
    case purple = 2
    case green = 3
}

然后:

// Array to hold the cards
var cards = [Card]()

for color in CardColor.allCases {
    for shape in CardShape.allCases {
        for shade in CardShade.allCases {
            for number in 1...3 {
                // Create a new card and append it to the array
                cards.append(Card(color: color, shape: shape, shade: shade, number: number))
            }
        }
    }
}