swift - 5 秒后开始过渡

Question

你好如何进行转换

let transitionType = SKTransition.crossFadeWithDuration (2.0)

5 秒后开始？

我的代码:

let nextLevel = level2(size: size)
nextLevel.scaleMode = scaleMode
let transitionType = SKTransition.crossFadeWithDuration(2.0)       
view?.presentScene(nextLevel,transition: transitionType)

Answer 1

你可以使用 SKAction.waitForDuration结合SKAction.runBlock在SKAction sequence :

let wait = SKAction.waitForDuration(5)
let action = SKAction.runBlock {
    view?.presentScene(nextLevel, transition: transitionType)
}

self.runAction(SKAction.sequence([wait, action]))