Question

我有一个SpriteKit场景，里面可以有数千个不同的节点。我还在场景中实现单击手势识别器，希望一旦触发手势识别器，我就能确定在场景中触摸了哪个节点。目前，我的（非工作）代码如下所示：

@objc func singleTap(_ sender: UIPinchGestureRecognizer) {
    print("single tap gesture recognized")

    if sender.numberOfTouches == 1 {

        let touchPoint = sender.location(in: self.view)
        let touchedNode = self.atPoint(touchPoint)

        if let name = touchedNode.name
        {
            if name == "newMapButton"
            {
                print("newMapButton Touched")
            } else {
                print("what did you touch?")
            }
        }

    }
}

手势识别器正在工作。当我触摸新的地图按钮时，我在控制台中获得了“单击手势识别”，但仅此而已。我在这里做错了什么？

Answer 1

在GameScene文件中，我在didMove方法中创建了我的按钮，如此

let btnTest = SKSpriteNode(imageNamed: "button")
btnTest.setScale(0.2)
btnTest.name = "Button"
btnTest.zPosition = 10
btnTest.position = CGPoint(x: 100, y: 200)
self.addChild(btnTest)

在didMove中添加手势：

let tapRec = UITapGestureRecognizer()
tapRec.addTarget(self, action:#selector(GameScene.tappedView(_:) ))
tapRec.numberOfTouchesRequired = 1
tapRec.numberOfTapsRequired = 1
self.view!.addGestureRecognizer(tapRec)

最后实现tappedView方法

@objc func tappedView(_ sender:UITapGestureRecognizer) {

if sender.state == .ended {

    var post = sender.location(in: sender.view)
    post = self.convertPoint(fromView: post)
    let touchNode = self.atPoint(post)

    if let name = touchNode.name
    {
        if name == "Button"
        {
            print("newMapButton Touched")
        } else {
            print("what did you touch?")
        }
    }
}
}

确定手势识别器中触摸的节点

1 个答案: