答案 0 :(得分:2)
我不知道“最佳方式”,但有一种方法是拥有一个占位符节点,当你的卡不在占位符上的(0,0)时,将其发回。
示例:
class PlayingCard : SKSpriteNode
{
override var position : CGPoint
{
didSet
{
if self.position != CGPoint.zero, actionForKey("reset") == nil
{
self.run(SKAction.moveTo(CGPoint.zero,duration:0.5).withKey:"reset")
}
}
}
}
使用:
class GameScene
{
.....
//however you are setting this up
let placeHolder = SKNode()
placeHolder = placeHolderPosition
let card = PlayingCard()
placeHolder.addChild(card)
self.addChild(placeHolder)
....
}
现在请记住,根据您移动卡的方式,可能无法调用didSet,因此您可能必须在更新中执行此操作,或者您可以作弊并在更新中执行:
func update()
{
...
// do my stuff
...
//maintain an array of all your playing cards
playingCards.forEach{$0.position = $0.position}
}