SKScene 节点未检测到触摸

Question

我正在尝试为 ios 制作 ARKit 应用程序，但场景中的节点没有响应触摸。场景显示正确，但我无法检测到任何触摸。

fileNamed: "TestScene" 引用我项目中的一个 TestScene.sks 文件，它是空的，我在代码中添加节点，如下所示。

let detailPlane = SCNPlane(width: xOffset, height: xOffset * 1.4)

let testScene = SKScene(fileNamed: "TestScene")
testScene?.isUserInteractionEnabled = true

let winner = TouchableNode(fontNamed: "Chalkduster")
winner.text = "You Win!"
winner.fontSize = 65
winner.fontColor = SKColor.green
winner.position = CGPoint(x: 0, y: 0)

testScene?.addChild(winner)

let material = SCNMaterial()
material.diffuse.contents = testScene
material.diffuse.contentsTransform = SCNMatrix4Translate(SCNMatrix4MakeScale(1, -1, 1), 0, 1, 0)
detailPlane.materials = [material]

let node = SCNNode(geometry: detailPlane)
rootNode.addChildNode(node)

对于 TouchableNode 我有以下 class

class TouchableNode : SKLabelNode {

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        print("Touch detected")
    }

}

Answer 1

您需要先执行 isUserInteractionEnabled = true。

所以，类似于：

class TouchableNode : SKLabelNode {
    override init() {
        super.init()
        isUserInteractionEnabled = true
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder:  aDecoder)
        isUserInteractionEnabled = true
    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        print("Touch detected")
    }
}

Answer 2

我使用手势识别实现了这种效果

private func registerGestureRecognizers() -> Void {
    let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTap))
    sceneView.addGestureRecognizer(tapGestureRecognizer)
}

然后有一个函数来处理点击手势

@objc private func handleTap(sender: UITapGestureRecognizer) -> Void {
    let sceneViewTappedOn = sender.view as! SCNView
    let touchCoordinates = sender.location(in: sceneViewTappedOn)
    let hitTest = sceneViewTappedOn.hitTest(touchCoordinates)
    if !hitTest.isEmpty {
        let hitResults = hitTest.first!
        var hitNode = hitResults.node
        // do something with the node that has been tapped
        }
    }
}

SKScene 节点未检测到触摸

SKScene nodes not detecting touch

ios

sprite-kit

swift

arkit