ios - 创建 spritenodes 时 Swift 游戏滞后

Question

因此，我最近将一款游戏上传到应用商店，并且有用户报告在旧设备上出现延迟。首先是游戏:它被称为“CURVE”(我不确定我是否可以在这里发布它的名称，但它会帮助您理解问题)。游戏的想法是一个球在屏幕上移动并穿过墙壁之间的间隙。还有一些较小的球从主球上落下，从而形成某种路径。现在，滞后。它们发生在两个主要时刻。首先，当路径创建时，其次，当玩家穿过间隙时。当玩家穿过间隙时，他会与一个不可见的节点发生碰撞。记录碰撞，更新分数。然后该节点被删除，玩家继续。我相信当 swift 创建 SpriteNode 或删除 SpriteNode 时会出现延迟。关于如何处理这个问题有什么想法吗？

这是我在生成障碍时使用的代码 - 我认为这就是问题所在

func createRocks() {

    rockHeight = (frame.height * (heightOfRocks))

    if gameState != .Dead {

    switch spawnCount {

    case 10:
        levelUp()

    case 20:
        levelUp()

    case 30:
        levelUp()

    case 40:
        levelUp()

    case 50:
        levelUp()

    case 60:
        levelUp()

    case 70:
        levelUp()

    case 80:
        levelUp()

    case 90:
        levelUp()

    case 100:
        levelUp()

    case 110:
        levelUp()

    case 120:
        levelUp()

    case 130:
        levelUp()

    case 140:
        levelUp()

    case 150:
        levelUp()

    default:
        break

    }
    }
    ++spawnCount






    let leftRock = SKShapeNode(rectOfSize: CGSize(width: (frame.width), height: (rockHeight)), cornerRadius: (cornerRad))
    leftRock.fillColor = themeColor
    leftRock.strokeColor = themeBorderColor
    leftRock.lineWidth = themeBorderWidth

    leftRock.physicsBody = SKPhysicsBody(rectangleOfSize: CGSize(width: ((frame.width) + (themeBorderWidth)), height: ((rockHeight) + (themeBorderWidth))))



    leftRock.physicsBody?.dynamic = false



    let rightRock = SKShapeNode(rectOfSize: CGSize(width: (frame.width), height: (rockHeight)), cornerRadius: (cornerRad))
    rightRock.fillColor = themeColor
    rightRock.strokeColor = themeBorderColor
    rightRock.lineWidth = (themeBorderWidth)


    rightRock.physicsBody = SKPhysicsBody(rectangleOfSize: CGSize(width: ((frame.width) + (themeBorderWidth)), height: ((rockHeight) + (themeBorderWidth))))
    rightRock.physicsBody?.dynamic = false


    leftRock.zPosition = CGFloat(10 + (21 * levelNumber))
    rightRock.zPosition = CGFloat(10 + (21 * levelNumber))


    // 2
    let rockCollision = SKSpriteNode(color: UIColor.clearColor(), size: CGSize(width: (frame.width * 2), height: 32))

    rockCollision.physicsBody = SKPhysicsBody(rectangleOfSize: rockCollision.size)
    rockCollision.physicsBody?.dynamic = false

    rockCollision.name = "scoreDetect"

    addChild(leftRock)
    addChild(rightRock)
    addChild(rockCollision)



    // 3

    let rockWidth = frame.width

    let yPosition = frame.height + leftRock.frame.height

    let rockDistance = frame.width * (gapWidth)

    let min = Int(((frame.width) * (wallWidth)) - (rockWidth / 2))
    let max = Int(((frame.width) * (1.00 - ((wallWidth)))) - rockDistance - (rockWidth / 2))


    let rand = min + Int(arc4random_uniform(UInt32(max - min)))
    //GKRandomDistribution(lowestValue: min, highestValue: max)

    let xPosition = CGFloat(rand)



    // 4
    leftRock.position = CGPoint(x: xPosition, y: yPosition)
    rightRock.position = CGPoint(x: xPosition + rockWidth + rockDistance, y: yPosition)


    rockCollision.position = CGPoint(x: xPosition, y: CGRectGetMidY(frame))

    rockCollision.position = CGPoint(x: CGRectGetMidX(frame), y: yPosition + (rockCollision.size.height * 2))





    let endPosition = frame.height + (leftRock.frame.height * 2)



    let moveAction = SKAction.moveByX(0, y: -endPosition, duration: timeOfRockMovement)
    let moveSequence = SKAction.sequence([moveAction, SKAction.removeFromParent()])
    leftRock.runAction(moveSequence)
    rightRock.runAction(moveSequence)
    rockCollision.runAction(moveSequence)
}
func initRocks() {



    let create = SKAction.runBlock { [unowned self] in
        self.createRocks()
    }

    let wait = SKAction.waitForDuration(rockSpawnWait)
    let sequence = SKAction.sequence([create, wait])
    let repeatForever = SKAction.repeatActionForever(sequence)

    runAction(repeatForever)
}

Answer 1

您的方法听起来与 a SpriteKit tutorial I wrote 非常相似，但我在那里完全没有滞后。 SpriteKit 非常快，但您的具体条件可能会导致问题。检查事项:

1) 您使用纹理图集吗？这些图像比 bundle 中的单独图像加载速度更快。

2) 如果您经常重复使用图像，您可以将它们存储在 SKTexture 中，然后从那里加载节点吗？

3) 是否还有其他事情发生，例如播放声音？ iOS 模拟器在播放游戏中的第一个声音时经常会出现短暂的延迟。

4)创建的路径是否很复杂？