Question

func updateTimer() {
    if Score < 10 {
        runAction(SKAction.repeatActionForever(SKAction.sequence([SKAction.runBlock(addEnemy), SKAction.waitForDuration(1.0)])))
    }else if Score == 10 {
        runAction(SKAction.repeatActionForever(SKAction.sequence([SKAction.runBlock(addEnemy), SKAction.waitForDuration(0.5)])))
    }else if Score == 20 {
        runAction(SKAction.repeatActionForever(SKAction.sequence([SKAction.runBlock(addEnemy), SKAction.waitForDuration(0.1)])))
    }
}

当玩家达到某个分数时，我试图让生成更快但是这个代码有错误可以任何人帮我这个请非常感谢那些回答我问题的人

我想让它像这样一个

func updateTimer() {
    if score < 3 {
    timerDots = NSTimer.scheduledTimerWithTimeInterval(1.5, target: self, selector: "fireDot", userInfo: nil, repeats: true)

    // Dots get generated a bit faster than before after score reaches 3
    } else if score == 3 {
        timerDots?.invalidate()
        timerDots = NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: "fireDot", userInfo: nil, repeats: true)

    // Dots get generated even faster than before after score reaches 12
    } else if score == 12 {
        timerDots?.invalidate()
        timerDots = NSTimer.scheduledTimerWithTimeInterval(0.9, target: self, selector: "fireDot", userInfo: nil, repeats: true)
    }

}

Answer 1

使用实例变量和SKScene update:方法执行此操作更简单：

private var score: Int = 0
private var priorEnemyAddTime: CFTimeInterval = 0

private var nextEnemyAddTime: CFTimeInterval {
    var waitTime = score < 10 ? 1.0
        : score < 20 ? 0.5
        : 0.1
    return priorEnemyAddTime + waitTime
}

override func update(currentTime: CFTimeInterval) {
    if nextEnemyAddTime <= currentTime {
        priorEnemyAddTime = currentTime
        addEnemy()
    }
}

在每一帧上，你检查自上次添加敌人以来它是否足够长。如果是这样，则将当前时间保存为上次添加的时间，然后添加敌人。

当达到一定分数时，让我的敌人产生更快的速度

1 个答案: