1
SKAction.group([moveToAction, SKAction.fadeAlphaTo(1.0, duration: 0.2)]), completion:nil)
}
runAction(SKAction.waitForDuration(0.2), completion: completion)
當我這樣做,我得到的錯誤:零不符合預期的參數類型不兼容「() - >虛空」
nil is not compatible with expected argument type '() -> Void'