我正在嘗試將命令從SKScene（SpriteKit）傳遞到SCNScene（SceneKit）

Question

我想單擊一個按鈕以生成3D對象。 我將SpritKit場景疊加到SceneKit場景上以在界面中使用SKNodes。 但是由於某種原因未調用該函數，其余代碼似乎仍在工作。 我想知道原因，以及是否還有另一種調用此函數的方法

這是我要傳遞的功能。

func setupDice() {
    var diceNode: SCNNode!
    let size: CGFloat = 1.5
    let diceGeometry = SCNBox(width: size, height: size, length: size, chamferRadius: 0)
    diceGeometry.materials.removeFirst()

    for i in 1...6 {

        let diceMaterial = SCNMaterial()
        diceMaterial.locksAmbientWithDiffuse = true
        diceMaterial.diffuse.contents = UIImage(named: "x\(i)")?.xFlipped
        diceMaterial.blendMode = .multiply

        diceGeometry.materials.append(diceMaterial)
    }

    diceNode = SCNNode(geometry: diceGeometry)
    diceNode.physicsBody = SCNPhysicsBody(type: .dynamic, shape: nil)
    diceNode.physicsBody?.restitution = 1
    diceNode.physicsBody?.mass = 1
    diceNode.physicsBody?.categoryBitMask = 1
    diceNode.physicsBody?.collisionBitMask = 2
    diceNode.physicsBody?.applyTorque(SCNVector4(x: randomTorqueForce(),
                                                 y: randomTorqueForce(),
                                                 z: randomTorqueForce(),
                                                 w: randomTorqueForce()), asImpulse: true)

    self.rootNode.addChildNode(diceNode)


}

這是我在SpriteKit場景內調用函數的地方

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    for touch in touches {
        if touch == touches.first {
            if playButtom.contains(touch.location(in: self)){
                mainScene.setupDice()
            }
        }
    }


}

這是我的GameViewController的正確狀態

class GameViewController: UIViewController {

var sceneView: SCNView!
var spriteScene: OverlayScene!

override func viewDidLoad() {
    super.viewDidLoad()

    //setupTest()

    self.sceneView = SCNView(frame: CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height))
    self.sceneView.scene = MainScene()
    spriteScene = OverlayScene(size: view.bounds.size)
    sceneView.backgroundColor = UIColor.white
    sceneView.overlaySKScene = spriteScene
    sceneView.allowsCameraControl = true
    sceneView.isPlaying = true
    self.view.addSubview(self.sceneView)


}




override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

}

Answer 1

可能是因為你沒有設置mainScene在你的初始化階段屬性OverlayScene 。 這樣的事情應該工作：

class GameViewController: UIViewController {

var sceneView: SCNView!
var spriteScene: OverlayScene!

override func viewDidLoad() {
    super.viewDidLoad()

    //setupTest()

    self.sceneView = SCNView(frame: CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height))

    let mainScene = MainScene()
    self.sceneView.scene = mainScene

    let overlayScene = OverlayScene(size: view.bounds.size)
    overlayScene.mainScene = mainScene
    spriteScene = overlayScene

    sceneView.backgroundColor = UIColor.white
    sceneView.overlaySKScene = spriteScene
    sceneView.allowsCameraControl = true
    sceneView.isPlaying = true
    self.view.addSubview(self.sceneView)
}