TappedNodes

import SpriteKit
import GameplayKit


class GameScene: SKScene {
  let label = SKLabelNode(fontNamed: "HelveticaNeue-Light")
  let button = SKSpriteNode(imageNamed: "blue2.png")
  let button2 = SKLabelNode(text: "Button")
 var n = 0
 let label2 = SKLabelNode(text: "kaisu: 0kai")  

override func didMove(to view: SKView) {
 physicsBody = SKPhysicsBody(edgeLoopFrom: frame)
 self.backgroundColor = .green
    label.text = "Hello World!"
    label.position = CGPoint(x: self.frame.midX, y: self.frame.midY + 10)
    label.fontSize = 20
    label.fontColor = SKColor.white
    self.addChild(label)   

  let labelSize: CGFloat = 30.0
  label2.fontSize = labelSize
  label2.fontName = "Avenir-Black"
  label2.position = CGPoint(x:self.frame.midX, y: 200)
  label2.fontColor = SKColor.black
  self.addChild(label2)

button.position = CGPoint(x: size.width/2, y: size.height/2+120)
button.zPosition = 1
button.name = "button"
 button.setScale(0.4)
 self.addChild(button)
 button.run(SKAction.scale(to: 0.5, duration: 0.3))
 button.alpha = 1

   button2.fontName = "HelveticaNeue-Bold"
  let labelSize2: CGFloat = 30.0
  button2.fontSize = labelSize2
  button2.position = CGPoint(x:self.frame.midX, y:250)
   self.addChild(button2)
   button2.name = "button2"
   button2.color = .blue
    }
override func touchesEnded(_ touches: Set, with event: UIEvent?) {
        button.alpha = 1
        button.setScale(0.5)
    }
 override func touchesMoved(_ touches: Set, with event: UIEvent?) {
    guard let touch = touches.first else { return }
    let toucLocation = touch.location(in: self)
     button2.position.x = toucLocation.x
 }
override func touchesBegan(_ touches: Set, with event: UIEvent?) {
    guard let touch = touches.first else { return }
    let location = touch.location(in: self)
   let tappedNodes = nodes(at: location)
     for node in tappedNodes {
        if node.name == "button" {
           button.alpha = 0.5
           button.setScale(0.6)
           if label.fontSize < 50 {
           label.fontSize += 2
      }
      else{ label.fontSize = 20
   }
 } else if node.name == "button2" {
     button2.fontSize += 1
      n += 1
      label2.text = "kaisu: \(n)kai"
   if button2.fontSize >= 50{
     button2.fontSize = 30
    }
 }
 }
 }
}