Question

我正在使用SpriteKit创建一个游戏（太空射击游戏）。当前在游戏中添加动画。当爆炸产生时，动画将循环播放X次（实际上是随机的）。有时它将循环3次，有时最多10次。屏幕最终充满了毫无意义的爆炸动画。

我曾经有一个简单的淡入/淡出动画，效果很好，但最终升级为更平滑的动画。我介绍了一个for循环，它给了我这个问题。我也尝试过使用while循环，但无济于事。我已经尝试过不按顺序使用动画，但这也无法解决任何问题。

func spawnExplosion(spawnPosition: CGPoint) {

    var explosion = SKSpriteNode()

    textureAtlas = SKTextureAtlas(named: "explosion")

    for i in 1...textureAtlas.textureNames.count {

        let name = "explosion\(i).png"
        textureArray.append(SKTexture(imageNamed: name))
        print(i)
    }

    explosion = SKSpriteNode(imageNamed: "explosion1.png" )
    explosion.setScale(0.6)
    explosion.position = spawnPosition
    explosion.zPosition = 3
    self.addChild(explosion)
    print(textureAtlas.textureNames.count)

    //explosion animation-action
    let explosionAnimation = SKAction.repeat(SKAction.animate(with: textureArray, timePerFrame: 0.05), count: 1)
    let delete = SKAction.removeFromParent()
    let explosionSequence = SKAction.sequence([explosionSound, explosionAnimation, delete])
    explosion.run(explosionSequence)

}

预期结果是，在调用函数时，动画应通过ONCE运行并删除自身。相反，它最多可以运行10次左右。

Answer 1

由于@ Knight0fDragon，我能够通过将纹理数组放置在函数内部来解决此问题。现在每个爆炸都有它自己的实例。

    func spawnExplosion(spawnPosition: CGPoint) {
    var explosion = SKSpriteNode()
    var textureAtlas = SKTextureAtlas()
    var textureArray = [SKTexture]()

    textureAtlas = SKTextureAtlas(named: "explosion")

    for i in 1...textureAtlas.textureNames.count {

        let name = "explosion\(i).png"
        textureArray.append(SKTexture(imageNamed: name))
    }

    explosion = SKSpriteNode(imageNamed: "explosion1.png" )
    explosion.setScale(0.6)
    explosion.position = spawnPosition
    explosion.zPosition = 3
    self.addChild(explosion)

    //explosion animation-action
    let explosionAnimation = SKAction.repeat(SKAction.animate(with: textureArray, timePerFrame: 0.05), count: 1)
    let delete = SKAction.removeFromParent()
    let explosionSequence = SKAction.sequence([explosionSound, explosionAnimation, delete])
    explosion.run(explosionSequence)

}

如何修复随机的for循环？

1 个答案: