尝试使用协程使方法暂停，我做错了什么？

Question

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;

 [RequireComponent(typeof(Rigidbody2D))]

 public class Movement : MonoBehaviour
 {
     //storage for the object's rigidbody
     public Rigidbody2D rb2D;
     //the public modifier for speed so i can edit from outside
     public float speed;
     //reliably take movements each second in an even, reliable manner. 
     void FixedUpdate()
     {
         //i move left and right if  i use "a" or "d or "left" or "right" 
         float moveX = Input.GetAxis("Horizontal");
         //I move up and down if i use "w" or "s" or "up" or "down"
         float moveY = Input.GetAxis("Vertical");
         //Vector inputs the move directions into a vector2 so i can move
         Vector2 move = new Vector2(moveX, moveY);
         rb2D.velocity = move * speed;
     }
     //following two methods are for the respective spikey builds
     public void slow()
     {
         print("Shit, spike's got me!");
         speed = .3f;
         StartCoroutine(PauseTheSlowdown(2.1f));
         speed = 1;
     }
     public void Bigslow()
     {
         print("HOLY CRAP THAT HURT");
         speed = 0f;
         StartCoroutine(PauseTheSlowdown(3.7f));
         speed = 1;
     }

     IEnumerator PauseTheSlowdown(float seconds)
     {
         print("Pause this crap");
         yield return new WaitForSecondsRealtime(seconds);
     }

 }

我在这里遇到了一个问题，我的代码似乎非常好。它运行，然后当外部脚本从任何一种尖峰方法中提取时，它的行为就像协程甚至不存在一样，并且从减速回到全速。 除了协程根本不会导致等待发生之外，没有任何错误或问题。我在这里遗漏了什么明显的东西吗？

Answer 1

您不能将必须暂停的代码放在正常功能中。你必须把它放在协程函数中。

例如，在您的 Bigslow 函数中，Speed 变量将设置为 0。 PauseTheSlowdown 协程将被启动。 Unity 将仅在 PauseTheSlowdown 函数中等待一帧，然后返回到速度设置为 1 的 Bigslow。它不会等待，因为您是从 void 函数启动它的。

你有两个选择：

1。将slow 和Bigslow 函数设为IEnumerator 而不是void，然后在调用StartCoroutine 时屈服。

public IEnumerator slow()
{
    print("Shit, spike's got me!");
    speed = .3f;
    yield return StartCoroutine(PauseTheSlowdown(2.1f));
    speed = 1;
}

public IEnumerator Bigslow()
{
    print("HOLY CRAP THAT HURT");
    speed = 0f;
    yield return StartCoroutine(PauseTheSlowdown(3.7f));
    speed = 1;
}

IEnumerator PauseTheSlowdown(float seconds)
{
    print("Pause this crap");
    yield return new WaitForSecondsRealtime(seconds);
}

在调用StartCoroutine之前注意yield return。

2.将要执行的代码移动到PauseTheSlowdown协程函数中等待一段时间：

public void slow()
{
    print("Shit, spike's got me!");
    StartCoroutine(PauseTheSlowdown(2.1f, .3f, 1));
}
public void Bigslow()
{
    print("HOLY CRAP THAT HURT");
    StartCoroutine(PauseTheSlowdown(3.7f, 0f, 1));
}

IEnumerator PauseTheSlowdown(float seconds, float before, float after)
{
    print("Pause this crap");
    speed = before;
    yield return new WaitForSecondsRealtime(seconds);
    speed = after;
}