如何解决 IEnumerator(Unity, C#) 的错误？

Question

我需要让我的角色墙运行，但我有代码问题IEnumerator这是用Unity 4.5.xC# 编写的代码using UnityEngine;using System.Collections;public class Moving : MonoBehaviour {public float speed = 6.0F;public float jumpSpeed = 8.0F; public float gravity = 20.0F;public float runTime = 1.0f;private Vector3 moveDirection = Vector3.zero;private bool isWallL = false;private bool isWallR = false;private RaycastHit hitL;private RaycastHit hitR;private int jumpCount = 1;IEnumerator afterRun() {    yield return new WaitForSeconds (runTime);    isWallL = false;    isWallR = false;    gravity = 20;}void Update() {    CharacterController controller = GetComponent<CharacterController>();    if (controller.isGrounded) {        jumpCount = 0;        moveDirection = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));        moveDirection = transform.TransformDirection(moveDirection);        moveDirection *= speed;        if (Input.GetButton("Jump"))            moveDirection.y = jumpSpeed;    }    if (Input.GetKeyDown (KeyCode.Space) && !controller.isGrounded && jumpCount <= 1) {        if (Physics.Raycast (transform.position, -transform.right, out hitL, 1)){            if (hitL.transform.tag == "Wall"){                isWallL = true;                isWallR = false;                jumpCount = 1;                gravity = 0;                StartCoroutine (afterRun);            }        }        if (Physics.Raycast (transform.position, transform.right, out hitR, 1)){            if (hitR.transform.tag == "Wall"){                isWallL = false;                isWallR = true;                jumpCount = 1;                gravity = 0;                StartCoroutine (afterRun);            }        }    }    moveDirection.y -= gravity * Time.deltaTime;    controller.Move(moveDirection * Time.deltaTime);    }}预计没有错误，但我有两个：错误CS1502：UnityEngine.MonoBehaviour.StartCoroutine(System.Collections.IEnumerator)'的最佳重载方法匹配有一些无效参数”和“错误CS1503：参数#1'无法将方法组'表达式转换为类型System.Collections.IEnumerator' 。

Answer 1

代码中的 afterRun 是一个函数，但您在调用它时不使用括号。所以：

StartCoroutine (afterRun());

例如：

namespace someNamespace

{ 

    public class SomeClass

    {

        IEnumerator afterRun()

        {

            yield return new WaitForSeconds(3);            

        }

        public void Test(IEnumerator enumerator)

        {

            while(enumerator.MoveNext())

            {

                //do some work

            }

        }

        public void YoureCode()

        {

            Test(afterRun());

        }

    }

    public class WaitForSeconds

    {

        public WaitForSeconds(int a)

        {            

        }

    }

}

Answer 2

为什么不这样：

private IEnumerator coroutine;

然后设置并调用它：

coroutine = afterRun();

StartCoroutine(coroutine);

Answer 3

根据 Unity协程的文档，看来协程函数必须被调用为StartCoroutine ("afterRun");