对象不产卵，从另一个类制作对象时

问题描述：

因此，它非常像这样的：我有这样的点触手势识别这样的作品，继承人在GameViewController类代码：对象不产卵，从另一个类制作对象时

@IBAction func handleTap(_ sender: UITapGestureRecognizer) 
{ 
    GameScene().makeCirc(); 
}

和函数我我打电话是在GameScene类，它看起来像这样：

public func makeCirc() { 

    circle = SKShapeNode (circleOfRadius: 15) 
    circle.name = "white circ" 
    circle.position = CGPoint (x: 0, y: 10) 
    circle.fillColor = .white 
    circle.physicsBody = SKPhysicsBody(circleOfRadius: 15) 

    circle.physicsBody?.isDynamic = true 
    circle.physicsBody?.affectedByGravity = false 
    circle.physicsBody?.linearDamping = 0 
    circle.physicsBody?.restitution = 1.0 
    circle.physicsBody?.allowsRotation = true 
    circle.physicsBody?.mass = 300 
    circle.physicsBody?.density = 2*3.14*15/(circle.physicsBody?.mass)! 
    circle.physicsBody?.angularDamping = 0.0 

    self.addChild(circle) 
    circle.physicsBody?.applyImpulse(CGVector(dx: 0.0, dy:1.0)) 
    print(circCount) 
    circCount += 1 
}

我也有更新功能的定时器，每过一会儿，球被催生。当我点击屏幕时，球也必须产生。这里是代码：

override func update(_ currentTime: TimeInterval) 
{ 
    timer += 1 
    if timer > spawntime { 
     makeCirc() 
     timer = 0 
    } 
    if circCount > 0 { 
     if (self.childNode(withName: "white circ")?.position.y)! > self.frame.maxY - 100 { 
      self.childNode(withName: "white circ")?.removeFromParent() 
      circCount -= 1 
     } 
    } 
}

然而，输出有点奇怪。没有窃听，输出是circCount，它通常是一个常数12，这应该是。但是，当我点击时，circCount显示为0，而不是产生球并使circCount 13+，但是，所有对象仍然在屏幕上。

无论如何从另一个班级产生的球没有circCount为0？谢谢！

编辑：这里是viewDidMove功能，如果它可以帮助：

override func viewDidLoad() { 
    super.viewDidLoad() 
    // Load 'GameScene.sks' as a GKScene. This provides gameplay related content 
    // including entities and graphs. 
    self.view.isUserInteractionEnabled = true 
    let tapGesture = UITapGestureRecognizer.init(target: self, action: #selector(handleTap(_:))) 
    self.view.addGestureRecognizer(tapGesture) 
    if let scene = GKScene(fileNamed: "GameScene") { 

     // Get the SKScene from the loaded GKScene 
     if let sceneNode = scene.rootNode as! GameScene? { 
      // Set the scale mode to scale to fit the window 
      sceneNode.scaleMode = .aspectFill 

      // Present the scene 
      if let view = self.view as! SKView? { 
       view.presentScene(sceneNode) 

       view.ignoresSiblingOrder = true 

       view.showsFPS = true 
       view.showsNodeCount = true 
      } 
     } 

    } 
}

使用'GameScene（）'，您正在**创建'GameScene'的另一个实例**。您应该参考当前的屏幕控制器。 – the4kman

我该怎么做dat？ –

将'sceneNode'保存在控制器的实例变量中，然后使用它调用'makeCirc（）'。（或者使用self.view.scene，或许。） –

答

好了，所以我把它都在做什么，我做了以下工作后。感谢您的帮助！

let scene = GKScene (fileNamed: "GameScene") 
var instance = GameScene() 
override func viewDidLoad() { 
    super.viewDidLoad() 
    let sceneNode = scene?.rootNode as! GameScene? 
    // Load 'GameScene.sks' as a GKScene. This provides gameplay related content 
    // including entities and graphs. 

    let tapGesture = UITapGestureRecognizer.init(target: self, action: #selector(handleTap(_:))) 
    self.view.addGestureRecognizer(tapGesture) 
    self.view.isUserInteractionEnabled = true 
     // Get the SKScene from the loaded GKScene 
     // Set the scale mode to scale to fit the window 
      sceneNode?.scaleMode = .aspectFill 
      instance = (sceneNode)! 
      // Present the scene 
      if let view = self.view as! SKView? { 
       view.presentScene(sceneNode) 
       view.ignoresSiblingOrder = true 
       view.showsFPS = true 
       view.showsNodeCount = true 


    } 
}

对象不产卵，从另一个类制作对象时

相关推荐