Ios 分步到SpriteKit的菜单

我有一个工作的游戏，就像飞鸟。我有一个用于菜单的常规视图控制器和一个用于游戏的游戏视图控制器。如何通过按钮从ViewController切换到SpriteKit

import SpriteKit

class Games: SKScene, SKPhysicsContactDelegate {

    var gamePlayScence = SKScene()

    var score = 0
    var scoreLabel = SKLabelNode()
    var gameOverLabel = SKLabelNode()

    var bird = SKSpriteNode()
    var bg = SKSpriteNode()
    var labelHolder = SKSpriteNode()

    let birdGroup:UInt32 = 1
    let objectGroup:UInt32 = 2
    let gapGroup:UInt32 = 0 << 3

    var gameOver = 0

    var movingObjects = SKNode()

    override func didMoveToView(view: SKView) {


        self.physicsWorld.contactDelegate = self

        self.physicsWorld.gravity = CGVectorMake(0, -5)

        self.addChild(movingObjects)

        makeBackground()

        self.addChild(labelHolder)

        scoreLabel.fontName = "Helvetica"
        scoreLabel.fontSize = 60
        scoreLabel.text = "0"
        scoreLabel.position = CGPointMake(CGRectGetMidX(self.frame), self.frame.size.height - 70)
        scoreLabel.zPosition = 11
        self.addChild(scoreLabel)



        let birdTexture = SKTexture(imageNamed: "img 2/flappy1.png")
        let birdTexture2 = SKTexture(imageNamed: "img 2/flappy2.png")

        let animation = SKAction.animateWithTextures([birdTexture, birdTexture2], timePerFrame: 0.1)
        let makeBirdFlap = SKAction.repeatActionForever(animation)

        bird = SKSpriteNode(texture: birdTexture)
        bird.position = CGPoint(x: CGRectGetMidX(self.frame), y: CGRectGetMidY(self.frame))
        bird.runAction(makeBirdFlap)

        bird.physicsBody = SKPhysicsBody(circleOfRadius: bird.size.height / 2)
        bird.physicsBody?.dynamic = true
        bird.physicsBody?.allowsRotation = false
        bird.physicsBody?.categoryBitMask = birdGroup
        bird.physicsBody?.contactTestBitMask = objectGroup
        bird.physicsBody?.collisionBitMask = gapGroup


        bird.zPosition = 10

        self.addChild(bird)

        let ground = SKNode()
        ground.position = CGPointMake(0, 0)
        ground.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(self.frame.size.width, 1))
        ground.physicsBody?.dynamic = false
        ground.physicsBody?.categoryBitMask = objectGroup
        self.addChild(ground)

        NSTimer.scheduledTimerWithTimeInterval(3, target: self, selector: Selector("makePipes"), userInfo: nil, repeats: true)
    }

    func makeBackground() {


        let bgTexture = SKTexture(imageNamed: "img 2/bg.png")


        let movebg = SKAction.moveByX(-bgTexture.size().width, y: 0, duration: 9)
        let replacebg = SKAction.moveByX(bgTexture.size().width, y: 0, duration: 0)
        let movebgForever = SKAction.repeatActionForever(SKAction.sequence([movebg, replacebg]))

        for var i:CGFloat=0; i<3; i++ {

            bg = SKSpriteNode(texture: bgTexture)
            bg.position = CGPoint(x: bgTexture.size().width/2 + bgTexture.size().width * i, y: CGRectGetMidY(self.frame))
            bg.size.height = self.frame.height


            bg.runAction(movebgForever)


            movingObjects.addChild(bg)


        }


    }

    func makePipes() {

        if (gameOver == 0) {

            let gapHeight = bird.size.height * 4

            let movementAmount = arc4random() % UInt32(self.frame.size.height / 2)

            let pipeOffset = CGFloat(movementAmount) - self.frame.size.height / 4

            let movePipes = SKAction.moveByX(-self.frame.size.width * 2, y: 0, duration: NSTimeInterval(self.frame.size.width / 100))

            let removePipes = SKAction.removeFromParent()

            let moveAndRemovePipes = SKAction.sequence([movePipes, removePipes])



            let pipe1Texture = SKTexture(imageNamed: "img 2/pipe1.png")

            let pipe1 = SKSpriteNode(texture: pipe1Texture)
            pipe1.position = CGPoint(x: CGRectGetMidX(self.frame) + self.frame.size.width, y: CGRectGetMidY(self.frame) + pipe1.size.height / 2 + gapHeight / 2 + pipeOffset)
            pipe1.runAction(moveAndRemovePipes)
            pipe1.physicsBody = SKPhysicsBody(rectangleOfSize: pipe1.size)
            pipe1.physicsBody?.dynamic = false
            pipe1.physicsBody?.categoryBitMask = objectGroup
            pipe1.zPosition = 8
            movingObjects.addChild(pipe1)


            let pipe2Texture = SKTexture(imageNamed: "img 2/pipe2.png")
            let pipe2 = SKSpriteNode(texture: pipe2Texture)
            pipe2.position = CGPoint(x: CGRectGetMidX(self.frame) + self.frame.size.width, y: CGRectGetMidY(self.frame) - pipe2.size.height / 2 - gapHeight / 2 + pipeOffset)
            pipe2.runAction(moveAndRemovePipes)
            pipe2.physicsBody = SKPhysicsBody(rectangleOfSize: pipe2.size)
            pipe2.physicsBody?.dynamic = false
            pipe2.physicsBody?.categoryBitMask = objectGroup
            pipe2.zPosition = 8
            movingObjects.addChild(pipe2)

            let gap = SKNode()
            gap.position = CGPoint(x: CGRectGetMidX(self.frame) + self.frame.size.width, y: CGRectGetMidY(self.frame) + pipeOffset)
            gap.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(pipe1.size.width, gapHeight))
            gap.runAction(moveAndRemovePipes)
            gap.physicsBody?.dynamic = false
            gap.physicsBody?.collisionBitMask = gapGroup
            gap.physicsBody?.categoryBitMask = gapGroup
            gap.physicsBody?.contactTestBitMask = birdGroup
            movingObjects.addChild(gap)

        }

    }

    // Update - removed ! after SKPhysicsContact

    func didBeginContact(contact: SKPhysicsContact) {

        if contact.bodyA.categoryBitMask == gapGroup || contact.bodyB.categoryBitMask == gapGroup {

            score++

            scoreLabel.text = "\(score)"



        } else {

            if gameOver == 0 {

                gameOver = 1

                movingObjects.speed = 0

                gameOverLabel.fontName = "Helvetica"
                gameOverLabel.fontSize = 30
                gameOverLabel.text = "Game Over! Tap to play again."
                gameOverLabel.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame))
                gameOverLabel.zPosition = 11
                labelHolder.addChild(gameOverLabel)

            }

        }


    }


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



        if (gameOver == 0) {

            bird.physicsBody?.velocity = CGVectorMake(0, 0)
            bird.physicsBody?.applyImpulse(CGVectorMake(0, 50))

        } else {



            score = 0
            scoreLabel.text = "0"

            movingObjects.removeAllChildren()

            makeBackground()

            bird.position = CGPoint(x: CGRectGetMidX(self.frame), y: CGRectGetMidY(self.frame))
            bird.physicsBody?.velocity = CGVectorMake(0, 0)

            labelHolder.removeAllChildren()

            gameOver = 0

            movingObjects.speed = 1


        }

    }


    override func update(currentTime: CFTimeInterval) {
        /* Called before each frame is rendered */
    }
}

导入SpriteKit
班级游戏：SKScene，SKPhysicContactDelegate{
var gamePlayScence=SKScene（）
风险值得分=0
var scoreLabel=SKLabelNode（）
var gameOverLabel=SKLabelNode（）
var bird=SKSpriteNode（）
var bg=SKSpriteNode（）
var labelHolder=SKSpriteNode（）
让birdGroup:UInt32=1
让objectGroup:UInt32=2
让gapGroup:UInt32=0这不包含问题。请阅读并尝试将代码减少到显示行为所需的最小代码。抱歉，我刚刚开始使用堆栈溢出。我的问题是如何以按钮的形式创建从常规UI视图到SK视图的功能段。@BenjaminW。您可以回答您的问题添加问题：）