确定手势识别器中触摸的节点

Question

我有一个 SpriteKit 场景，其中可以有数千个不同的节点。我还在场景中实现了一个单击手势识别器，希望一旦触发手势识别器，我就可以确定场景中哪个节点被触摸。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，我会在控制台中获得“识别单击手势”，但仅此而已。我在这里做错了什么？

Answer 1

1. 在 GameScene 文件中，我像这样在 didMove 方法中创建了按钮

   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)
   

2. 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)
   

3. 终于实现了 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?")
           }
       }
   }
   }