Sprite Kit如何更新按钮上的图像？

问题描述：

我是Swift和Sprite Kit的新手。Sprite Kit如何更新按钮上的图像？

我想在MyScene.swift中创建一个具有特定图像的按钮。每当我点击按钮，我想用新图像改变按钮图像。我该怎么做？

GameScene.swift 

class GameScene: SKScene { 
var rollButton:SKSpriteNode = SKSpriteNode(imageNamed: "dice1.png") 

override func didMoveToView(view: SKView) { 

rollButton.position = CGPoint(x: 79, y: 290) //this position is based to what? Is there an easier way to put a button using storyborard 

    rollButton.setScale(0.5) //what does setScale mean? 
self.addChild(rollButton) 
} 

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) { 
    for touch: AnyObject in touches { 
    if CGRectContainsPoint(rollButton.frame, touch.locationInNode(self)) { 
     changeButtonImage() 
    } 
    } 
} 

func changeButtonImage() { 
//radom get value beteween 1 - 6 
change the rollButton image with a new value??? //how to do that 
}

有没有一种方法，我的故事板上添加一个UIButton，比连接 GameScene，迅速与故事板？（以编程方式添加子节点可能确实很难）
节点的CGPoint基于什么？目前的UIView？
如何编程更改按钮的图像（使用 SpriteKit节点SWIFT）与其他图像举例来说，如果我有图片： dice1，dice2，dice3 ...

这是客观C代码：

NSString *fileName = [NSString stringWithFormat:@"dice%d.png", num]; 
// Setting the uiimageview to the appropriate image 
self.rollButton.image = [UIImage imageNamed:fileName];

我没有找到如何设置从storyborard按钮，也比使用uiviewcontrollers到每个新创建的GameScene任何很好的例子，

答

首先，创建一个你想要的图像rray按钮有：

let arrayOfImages = [ 
    "image1.png", 
    "image2.png", 
    "image3.png", 
    "image4.png", 
    "image5.png", 
    "image6.png" 
]

然后初始化按键精灵，并给它一个纹理开始：

var rollButton = SKSpriteNode() 
rollButton.texture = SKTexture(imageNamed: arrayOfImages[0])

然后，每次changeButtonImage()被调用时，产生一个随机数并更改按钮的质感：

var randomNumberBetween0And5 = Int(arc4random_uniform(6)) 
rollButton.texture = SKTexture(imageNamed: arrayOfImages[randomNumberBetween0And5])

答

如果你想建立一个按钮或使用通用的开关，你应该试试这个控制我做了，利用它非常直截了当：你刚才初始化按钮类型/开关你想（ColoredSprite，纹理或纯文字）

let control = TWButton(normalColor: SKColor.blueColor(), highlightedColor: SKColor.redColor(), size: CGSize(width: 160, height: 80))

和初始化后添加一个闭合它（像addTargetForSelector上的UIButton）

control.addClosureFor(.TouchUpInside, target: self, closure: { (scene, sender) ->() in 
      scene.testProperty = "Changed Property" 
     }) 
    }

这它！有一个在GitHub的页面上的自述节的更多信息：https://github.com/txaidw/TWControls

但是，如果你想在一个特定的节点来实现这里是我如何做：

internal override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) { 
    let touch = touches.first as! UITouch 
    let touchPoint = touch.locationInNode(self.parent) 

    if self.containsPoint(touchPoint) { 
     self.touchLocationLast = touchPoint 
     touchDown() 
    } 
} 

internal override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) { 
    let touch = touches.first as! UITouch 
    let touchPoint = touch.locationInNode(self.parent) 
    self.touchLocationLast = touchPoint 
} 


internal override func touchesEnded(touches: Set<NSObject>, withEvent event: UIEvent) { 
    let touch = touches.first as! UITouch 
    let touchPoint = touch.locationInNode(self.parent) 

     if let lastPoint = self.touchLocationLast where self.containsPoint(lastPoint) { 
      // Ended inside 
      touchUpInside() 
     } 
     else { 
      // Ended outside 
      touchUpOutside() 
     } 
}

Sprite Kit如何更新按钮上的图像？

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