Question

这有点难以解释，但我想编写一段代码，在一段时间后降低用户氧气水平。例如，如果用户正在游泳，那么用户氧气水平应该每5秒降低0.5。我有一般的想法，但我似乎无法弄清楚如何编写代码。这是我到目前为止所拥有的

C＃

    public float timer = 60;
    public float oxygen = 100;
    public float decreaseOxygen = 0.5f;
    public float oxygenDecreaseInterval = 2;

    private float decreaseOxyOverTime(float amountToDecrease)
    {
        oxygen = oxygen - amountToDecrease;
        return oxygen;
    }

     private float createDelayTimer()
    {
        float delayedTime = timer - oxygenDecreaseInterval;
        InvokeRepeating("delayedTime", 0, 5f);

        return delayedTime;
    }

void Update()
{

        if (timer >= createDelayTimer())
        {
            oxText.text = "Oxygen: " + decreaseOxyOverTime(decreaseOxygen) + "%";
        }

        timer -= Time.deltaTime;
}

Answer 1

为什么不使用Coroutine？

当你想开始减少氧气时你可以这样做：

StartCoroutine("DecreaseOverTime", amountToDecreaseBy, interval);

IEnumerator DecreaseOverTime(float amountToDecreaseBy, float interval)
{
  float adjust = 0;
  while(true)
  {
   var prev = DateTime.Now;

   yield return new WaitForSeconds(interval-adjust);

   adjust = DateTime.Now.Subtract( prev ).Seconds - interval;
  }
}

我假设interval是以秒为单位测量的。

注意：我使用它的名称来呼叫StartCoroutine，而不是仅仅调用该方法，以便稍后可以使用StopCoroutine停止。

Answer 2

float holdingBreath = -1f;
float delay = 5.0f;
float oxyLevel = 5.0f;
float rate = 0.5f;

void HoldBreathToggle()
{
    holdingBreath = holdingBreath > 0f ? -1f : Time.time;
}

void Update()
{
    if(holdingBreath > 0f)
    {
        if(Mathf.Approximately((Time.time - holdingBreath) % delay, 0f))
            oxyLevel -= rate;
    }
}

现在你所要做的就是乱用率，直到你的速度很快。

Answer 3

我明白了，@安德鲁是最接近答案的，但这正是我所寻找的：

<强> C＃

public float timer = 60;
public float oxygen = 100;
public float decreaseOxygen = 0.5f;
public float oxygenDecreaseInterval = 2;

private float compareTime = 0.0f;

private float decreaseOxyOverTime(float amountToDecrease)
{
    oxygen = oxygen - amountToDecrease;
    return oxygen;
}
void Update()
{
    compareTime += Time.deltaTime;

    timeText.text = "Time Remaining: " + timer;
    oxText.text = "Oxygen: " + oxygen + "%";

    if (compareTime >= oxygenDecreaseInterval)
    {
        compareTime = 0f;
        oxText.text = "Oxygen: " + decreaseOxyOverTime(decreaseOxygen) + "%";
    }

    timer -= Time.deltaTime;

}

在一段时间后减少浮动

3 个答案: