如何将一组skspritenodes一起移动

Posted 2023-02-15

【中文标题】如何将一组skspritenodes一起移动

【英文标题】：how to move a group of skspritenodes together

【发布时间】：2021-12-05 21:45:59

【问题描述】：

我想一起移动一组 skspritenodes。我已经把它们放在同一个名字下。但我想将它们作为一个整体向左移动。我怎样才能做到这一点？每个节点都有不同的 x 和 y 位置，那么我可以做些什么来改变节点的位置，使它们都保持在一起但横向移动？

【问题讨论】：

请澄清您的具体问题或提供其他详细信息以准确突出您的需求。正如目前所写的那样，很难准确地说出你在问什么。

【参考方案1】：

要么将第 2 个和后续节点设为第一个节点的子节点，要么将它们全部设为某个可能的不可见节点的子节点。

然后移动父级也会移动所有子级。您可能需要根据 X 和 Y 位置调整创建节点的方式，因为它们是相对于父节点的。

【参考方案2】：

您可以通过搜索将x或y添加到所有节点

self.enumerateChildNodes(withName: "//NodeName", using:  node, stop in
        if let node = node as? SKSpriteNode 
            //move
         
)

或将它们添加到向量中：

class TTESTGameScene: SKScene 
    
    var allBoxes: [SKSpriteNode] = []
    
    override func didMove(to view: SKView) 
        physicsBody = SKPhysicsBody(edgeLoopFrom: frame)
        view.allowsTransparency = true
        self.backgroundColor = .clear
        view.alpha = 1.0
        view.isOpaque = true
        view.backgroundColor = SKColor.clear.withAlphaComponent(0.0)
        
        let upButton = SKShapeNode(rect: CGRect(x: 0, y: view.frame.maxY - 40, width: 66, height: 33), cornerRadius: 20)
        upButton.fillColor = .yellow
        upButton.name = "upButton"
        addChild(upButton)
        let downButton = SKShapeNode(rect: CGRect(x: 80, y: view.frame.maxY - 40, width: 66, height: 33), cornerRadius: 20)
        downButton.fillColor = .orange
        downButton.name = "downButton"
        addChild(downButton)
        let addBox = SKShapeNode(rect: CGRect(x: 200, y: view.frame.maxY - 40, width: 66, height: 33), cornerRadius: 20)
        addBox.fillColor = .red
        addBox.name = "addBox"
        addChild(addBox)
    

    func addBox() 
        let box = SKSpriteNode(color: SKColor.red, size: CGSize(width: 10, height: 10))
        box.position = CGPoint(x: CGFloat.random(in: 10..<200), y: CGFloat.random(in: 10..<200))
        box.physicsBody = SKPhysicsBody(rectangleOf: CGSize(width: 10, height: 10))
        box.physicsBody?.affectedByGravity = false
        addChild(box)
        allBoxes.append(box)
    
    
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) 
        guard let touch = touches.first else  return 
        let location = touch.location(in: self.view)
        
        let sceneTouchPoint = self.convertPoint(fromView: location)
        let touchedNode = self.atPoint(sceneTouchPoint)
        print(touchedNode.name)
        if touchedNode.name == "upButton" 
            allBoxes.forEach()  box in
                box.position.addY(10)
            
        
        else if touchedNode.name == "downButton" 
            allBoxes.forEach()  box in
                box.position.addY(-10)
            
        
        else if touchedNode.name == "addBox" 
            addBox()
        
            
        
    

extension CGPoint 
    public mutating func addX(_ x:CGFloat)
        let p:CGPoint = CGPoint(x: self.x + x, y: self.y)
        self = p
    
    public mutating func addY(_ y:CGFloat)
        let p:CGPoint = CGPoint(x: self.x, y: self.y + y)
        self = p
    

// A sample SwiftUI creating a GameScene and sizing it
// at 300x400 points
struct TTESTContentView: View 
    var scene: SKScene 
        let scene = TTESTGameScene()
        scene.size = CGSize(width: 300, height: 400)
        scene.scaleMode = .aspectFill
        return scene
    

    var body: some View 
        SpriteView(scene: scene)
            .frame(width: 300, height: 400)
            //.ignoresSafeArea()
    

struct ContentViewTest_Previews: PreviewProvider 
    static var previews: some View 
        TTESTContentView()