小编dro*_*Fai的帖子

我正在尝试创建一个方便初始化程序来覆盖convenience init? (fileNamed:)SKScene中的初始化程序,以便我可以将一些初始值传递给场景,同时还取消归档.sks文件.问题是,当我尝试这样做时,似乎SKScene(GameScene)的子类无法看到convenience init? (fileNamed:)超类的子类.以下是我的一些尝试:

Class GameScene : SKScene {

var stage : Int?

override init(size: CGSize) {
    super.init(size: size)
}

required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

convenience init?(fileNamed: String, stage: Int) {
    self.init(fileNamed: fileNamed)  // Compiler error-- Argument labels '(filenamed:)' do not match any available overloads
    self.stage = stage
}

我发现的另一个尝试建议作为解决方法:

Class GameScene : SKScene {

var stage : Int?

override init(size: CGSize) {
    super.init(size: size)
}

required init?(coder aDecoder: …

我对无法使用的Swift代码中的此循环感到困惑。这是整个函数-“ pulseChar”给我错误“索引超出范围”：

func openingSequence(){
        let nodeList = [self.drum,self.piano,self.guitarBoard]
        let offset = SKAction.waitForDuration(10)
        let stOne = SKAction.runBlock { () -> Void in
            for var i in 0...nodeList.count-1{
                nodeList[i].runAction(SKAction.fadeAlphaTo(0.3, duration: 0.3))
                i++
            }
        }
        let firstLineWait = SKAction.waitForDuration(4)
        let moveSprites = SKAction.runBlock { () -> Void in
            moveScale(self.rheaBoard, duration: 0.5, to: CGPoint(x: 100, y: self.frame.height - 85), size: 0.4)
            moveScale(self.guitarBoard, duration: 0.5, to: CGPoint(x: self.frame.midX - self.frame.midX/2, y: 65), size: 0.35)
            for var i in 0...nodeList.count-1{
                nodeList[i].runAction(fadeI)
                i++
            }
        }
        let fadeAudio …