Question

我正在进行蛇形游戏，我遇到了一个问题，如果我的输入（向上，向下，向左，向右）过快，我的蛇就会陷入其中。我试图在Update（）下创建一个计时器来调节我的动作，但我发现我的蛇仍然会不时地进入自身。

我使用InvokeRepeating（）每隔0.05秒移动我的蛇，我有2种输入方法：1）更新以监听键盘输入（向上，向下，向左，向右箭头）和2）游戏手柄UI（向上，向下，向左，向右按钮）。有关如何调节方向变化的任何建议吗？

    void Start () {
        Screen.orientation = ScreenOrientation.Portrait;
        isPaused = false;
        InvokeRepeating("TimerInvoke", 0, deltaTimer);
    }

    void TimerInvoke() {
    Movement();
    StartCoroutine(checkVisible());
    if (currentSize == maxSize)
        TailFunction();
    else
        currentSize++;
    }

    void Update () {
         CompDirectionControl();
         PauseCMD();
    }

    void CompDirectionControl() {
    if (direction != Direction.South && Input.GetKeyDown(KeyCode.UpArrow))
        direction = Direction.North;
    if (direction != Direction.West && Input.GetKeyDown(KeyCode.RightArrow))
        direction = Direction.East;
    if (direction != Direction.North && Input.GetKeyDown(KeyCode.DownArrow))
        direction = Direction.South;
    if (direction != Direction.East && Input.GetKeyDown(KeyCode.LeftArrow))
        direction = Direction.West;
    }

    public void  MPadDirectionControl(int numDirection)
    {
    if (direction != Direction.South && numDirection == 0)
        direction = Direction.North;
    if (direction != Direction.West && numDirection == 1)
        direction = Direction.East;
    if (direction != Direction.North && numDirection == 2)
        direction = Direction.South;
    if (direction != Direction.East && numDirection == 3)
        direction = Direction.West;
    }

我尝试创建这样的东西，但延迟非常不一致

    if (Time.time >= timeStamp)
    {
        CompDirectionControl();
        timeStamp = Time.time + moveInterval;
    }

更新通过使用协程，我能够为键盘输入添加延迟。但是，我还没想出如何对我的按钮UI输入做同样的事情。如果我创建一个公共IEnumerator GamePadDirControl（int方向），如何将我的按钮参数传递给我的IEnumator？即使我将GamePadDirControl设置为公开，我也没有在我的Inspector中看到它，所以我无法将我的按钮链接到它

IEnumerator DirControl() {
    if (direction != Direction.South && Input.GetKeyDown(KeyCode.UpArrow))
    {
        yield return new WaitForSeconds(deltaTimer);
        direction = Direction.North;
    }
    else if (direction != Direction.West && Input.GetKeyDown(KeyCode.RightArrow))
    {
        yield return new WaitForSeconds(deltaTimer);
        direction = Direction.East;
    }
    else if (direction != Direction.North && Input.GetKeyDown(KeyCode.DownArrow))
    {
        yield return new WaitForSeconds(deltaTimer);
        direction = Direction.South;
    }
    else if (direction != Direction.East && Input.GetKeyDown(KeyCode.LeftArrow))
    {
        yield return new WaitForSeconds(deltaTimer);
        direction = Direction.West;
    }
}

更新2 对于我的按钮UI - 由于我的按钮不能与IEnumator函数链接，我决定为每个方向创建单独的协同程序，并从我的public void MPadDirectionControl（int numDirection）函数调用它们。

按钮ui输入上的更新代码

public void MPadDirectionControl(int numDirection)
{
    if (direction != Direction.South && numDirection == 0)
    {
        StartCoroutine(IntervalN());
        //direction = Direction.North;
    }
    else if (direction != Direction.West && numDirection == 1)
    {
        StartCoroutine(IntervalE());
        //direction = Direction.East;
    }
    else if (direction != Direction.North && numDirection == 2)
    {
        StartCoroutine(IntervalS());
        //direction = Direction.South;
    }
    else if (direction != Direction.East && numDirection == 3)
    {
        StartCoroutine(IntervalW());
        //direction = Direction.West;
    }
}

IEnumerator IntervalN() {
    yield return new WaitForSeconds(deltaTimer);
    direction = Direction.North;
}

IEnumerator IntervalE()
{
    yield return new WaitForSeconds(deltaTimer);
    direction = Direction.East;
}

IEnumerator IntervalS()
{
    yield return new WaitForSeconds(deltaTimer);
    direction = Direction.South;
}

IEnumerator IntervalW()
{
    yield return new WaitForSeconds(deltaTimer);
    direction = Direction.West;
}

Answer 1

我不确定我完全理解你的问题......

你试图在延迟之前改变方向吗？

如果是这样，我会尝试：

StartCoroutine(ChangeDirectionTo(Direction.North, 0.05f));
IEnumarator ChangeDirectionTo(Direction direction, float delay) {
   yield return new WaitForSeconds(delay);
   this.direction = direction;
}

Answer 2

我想我看到了问题。您需要区分蛇的当前方向和用户的命令方向。尝试这样的事情：

if (direction != Direction.South && Input.GetKeyDown(KeyCode.UpArrow))
    nextDirection = Direction.North;
if (direction != Direction.West && Input.GetKeyDown(KeyCode.RightArrow))
    nextDirection = Direction.East;
if (direction != Direction.North && Input.GetKeyDown(KeyCode.DownArrow))
    nextDirection = Direction.South;
if (direction != Direction.East && Input.GetKeyDown(KeyCode.LeftArrow))
    nextDirection = Direction.West;
}

然后在您实际创建多维数据集的代码中，在产生它之前，使用nextDirection告诉您玩家想要去的地方：

direction = nextDirection;

因此，玩家在生成多维数据集之前根本没有机会改变方向。

这应该可行，但它的缺点是你不会得到好的输入缓冲＆＃34;一些蛇游戏的效果，你可以点击向右，向下，而蛇向北进行掉头。如果你想这样做，你必须实现某种智能缓冲系统，该系统可以检测玩家是否输入了一种非常特殊的＆＃34;无效的＆＃34;输入（北/南方向为北，nextDirection为东）并设置蛇以便将来方向改变。有点像缓冲＆＃34;特殊动作＆＃34;战斗游戏的输入。

Unity - 为我的按钮添加延迟

2 个答案: