触摸功能在 SpriteKit 中不起作用吗

Question

import SpriteKit


class GameScene: SKScene {
    var cam: SKCameraNode?
    var player: SKSpriteNode?
    
    
    
    
    override func didMove(to view: SKView) {
       super.didMove(to: view)
       cam = SKCameraNode()
       self.camera = cam
       self.addChild(cam!)
        player = self.childNode(withName: "player") as? SKSpriteNode
    }
    
     func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
        let touch:UITouch = touches.anyObject() as! UITouch
        let touchLocation = touch.location(in: self)

        if touchLocation.x < self.frame.size.width / 2 {
            let moveRight = SKAction.moveBy(x: 300, y: 0, duration: 1)
            player?.run(moveRight)
        } else {
            let moveLeft = SKAction.moveBy(x: -300, y: 0, duration: 1)
            player?.run(moveLeft)
            
        }
    }
    
    
    override func update(_ currentTime: TimeInterval) {
        super.update(currentTime)
        if let camera = cam, let pl = player {
          camera.position = pl.position
        }
      }
    
    
}

这是我的整个游戏场景和我使用 sk 场景拖放到屏幕上的精灵。如果有任何影响，我已经在场景中添加了一个相机。感谢您的帮助。

Answer 1

您需要覆盖 touches begind 函数。它还有助于放入打印语句以显示正在接收触摸。

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
  for touch in touches {
  print("touch detected")
  let touchLocation = touch.location(in: self)

   if touchLocation.x < self.frame.size.width / 2 {
       let moveRight = SKAction.moveBy(x: 300, y: 0, duration: 1)
       player?.run(moveRight)
   } else {
       let moveLeft = SKAction.moveBy(x: -300, y: 0, duration: 1)
       player?.run(moveLeft)
   }
  }
 }

Answer 2

import SpriteKit


class GameScene: SKScene {
    var cam: SKCameraNode?
    var player: SKSpriteNode?
    
    
    
    
    override func didMove(to view: SKView) {
       super.didMove(to: view)
       cam = SKCameraNode()
       self.camera = cam
       self.addChild(cam!)
        player = self.childNode(withName: "player") as? SKSpriteNode
    }
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
      for touch in touches {
      print("touch detected")
      let touchLocation = touch.location(in: self)

        if touchLocation.x < (player?.position.x)! {
           let moveRight = SKAction.moveBy(x: 300, y: 0, duration: 1)
        print("right")
           player?.run(moveRight)
       } else {
           let moveLeft = SKAction.moveBy(x: -300, y: 0, duration: 1)
        print("Left")
           player?.run(moveLeft)
       }
      }
     }
    
    override func update(_ currentTime: TimeInterval) {
        super.update(currentTime)
        if let camera = cam, let pl = player {
          camera.position = pl.position
        }
      }
    
    
}

我在 JohnL 的帮助下弄明白了。通过添加 if touchLocation.x < (player?.position.x)!而不是 if touchLocation.x < self.frame.size.width / 2

触摸功能在 SpriteKit 中不起作用吗

Did touch function not working in SpriteKit

xcode

ios

sprite-kit

swift