swift : Color Changing SKSpriteNode on repeat

Question

我想改变我的 SKSpriteNode 的颜色，就像闪光灯一样，它不断地改变颜色然后重复。我可以用这样的 UIView 来做到这一点:

UIView.animateWithDuration(2, delay: 0.0, options:[UIViewAnimationOptions.Repeat, UIViewAnimationOptions.Autoreverse], animations: {
self.view.backgroundColor = UIColor.blackColor()
self.view.backgroundColor = UIColor.greenColor()
self.view.backgroundColor = UIColor.grayColor()
self.view.backgroundColor = UIColor.redColor()
}, completion: nil)

但我想对 sksprite 节点执行此操作。我做了类似的事情并创建了一堆，但这是有问题的，我觉得可能有更好的方法。

let changeBlue = SKAction.colorizeWithColor(UIColor.blueColor(), colorBlendFactor: 1.0, duration: 2.0)
self.runAction(changeBlue)

let changeRed = SKAction.colorizeWithColor(UIColor.redColor(), colorBlendFactor: 1.0, duration: 2.0)
self.runAction(changeRed)

Answer 1

您可能正在寻找sequence(_:)。请参阅Creating Actions That Combine or Repeat Other Actions在 SKAction 文档中。另外，repeatActionForever(_:) 可以使操作无限期重复。<​​/p>

let colorBlue = SKAction.colorizeWithColor(UIColor.blueColor(), colorBlendFactor: 1.0, duration: 2.0)
let colorRed = SKAction.colorizeWithColor(UIColor.redColor(), colorBlendFactor: 1.0, duration: 2.0)
let colorizeSequence = SKAction.sequence([colorBlue, colorRed])
runAction(SKAction.repeatActionForever(colorizeSequence))