孩子一旦从父母中移除就不会重新出现

Question

我正在制作一个超级简单的游戏，游戏从一组形状（代码块中的形状）中创建一个随机的、可点击的形状。一旦被点击，我在被点击的节点上调用 node.removefromparent() 并通过 addchild 将同一数组中的新节点添加到根节点。

这是我的问题：如果创建的随机节点与之前删除的节点相同，则它不会显示。我该如何解决这个问题？

创建函数和删除函数的代码如下：

创作

func CreateShape() {

        let shape = shapes.randomElement()!
        shape.anchorPoint = CGPoint(x: 0.5, y: 0.5)
        shape.colorBlendFactor = 1.0
        shape.color = colors.randomElement() ?? UIColor.systemPink
        shape.name = "figur"
        shape.zPosition = 100
        shape.physicsBody = SKPhysicsBody(circleOfRadius: 150)
        shape.physicsBody?.isDynamic = false
        shape.position = CGPoint(x: randomPos().x, y: randomPos().y)
        print(shape)

        addChild(shape)

    }

删除：

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {

        let touch = touches.first
        let location = touch!.location(in: self)
        let tappedNodes = nodes(at: location)

        guard let tapped = tappedNodes.first else { return }

        if tapped.name == "figur" {

            let fadeOut = SKAction.fadeAlpha(to: 0, duration: 0.5)
            let randomAction = actions.randomElement()!
            let remove = SKAction.removeFromParent()
            let sequence = SKAction.sequence([randomAction, fadeOut, remove])
            sequence.timingMode = .easeInEaseOut

            tapped.run(sequence)

            self.isUserInteractionEnabled = false

            DispatchQueue.main.asyncAfter(deadline: .now() + 1.5, execute: {

                self.isUserInteractionEnabled = true
                self.CreateShape()

            })
        }
    }

Answer 1

您将 alpha 设置为 0，但您从未重置它。

func CreateShape() {

        let shape = shapes.randomElement()!
        shape.anchorPoint = CGPoint(x: 0.5, y: 0.5)
        shape.colorBlendFactor = 1.0
        shape.color = colors.randomElement() ?? UIColor.systemPink
        shape.name = "figur"
        shape.zPosition = 100
        shape.physicsBody = SKPhysicsBody(circleOfRadius: 150)
        shape.physicsBody?.isDynamic = false
        shape.position = CGPoint(x: randomPos().x, y: randomPos().y)
        shape.alpha = 1.0 //<-----insert here
        print(shape)


        addChild(shape)

    }