无法将类型“NSMutableArray”的值转换为预期参数类型“[SKAction]”

我检查了我的旧游戏（用 SpriteKit 制作），我想在 Swift 2.0 中更新它。当我尝试修复它时，Xcode 发现了一个错误。

错误是：无法将类型“NSMutableArray”的值转换为预期参数类型“[SKAction]”

在代码中：

torpedo.runAction(SKAction.sequence(actionArray))

功能：

override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {

self.runAction(SKAction.playSoundFileNamed("torpedo.mp3", waitForCompletion: false))

var touch:UITouch = touches.anyObject() as! UITouch 
var location:CGPoint = touch.locationInNode(self)

var torpedo:SKSpriteNode = SKSpriteNode(imageNamed: "torpedo")
torpedo.position = player.position

torpedo.physicsBody = SKPhysicsBody(circleOfRadius: torpedo.size.width/2)
torpedo.physicsBody!.dynamic = true
torpedo.physicsBody!.categoryBitMask = photonTorpedoCategory
torpedo.physicsBody!.contactTestBitMask = alienCategory
torpedo.physicsBody!.collisionBitMask = 0
torpedo.physicsBody!.usesPreciseCollisionDetection = true

var offset:CGPoint = vecSub(location, b: torpedo.position)

if (offset.y < 0){
    return

self.addChild(torpedo)

var direction:CGPoint = vecNormalize(offset)

var shotLength:CGPoint = vecMult(direction, b: 1000)

var finalDestination:CGPoint = vecAdd(shotLength, b: torpedo.position)

let velocity = 568/1
let moveDuration:Float = Float(self.size.width) / Float(velocity)

var actionArray:NSMutableArray =  NSMutableArray()
actionArray.addObject(SKAction.moveTo(finalDestination, duration: NSTimeInterval(moveDuration)))
actionArray.addObject(SKAction.removeFromParent())

torpedo.runAction(SKAction.sequence(actionArray)) //<-- Here is Error

}

有人能帮我吗 ？

要运行一系列操作，请使用此代码

// REMOVE THIS var actionArray:NSMutableArray =  NSMutableArray()
let move = SKAction.moveTo(finalDestination, duration: NSTimeInterval(moveDuration))
let remove = SKAction.removeFromParent()
torpedo.runAction(SKAction.sequence([move,remove]))