c# - 错误 CS1525：意外符号“插入变量名”，应为“。”

Question

我在 Unity 5 中收到此错误消息

错误CS1525：意外符号insert variable name', expecting。

using UnityEngine;
using System.Collections;

public class jumpControll : MonoBehaviour 
{

    public bool jump;
    public float jumpHeight;



    // Use this for initialization

    public IEnumerator jumpUp (float jumpHeight) 
    {
        jumpHeight = 3.0f;
        transform.position = new Vector3(transform.position.x,
          transform.position.y + jumpHeight, transform.position.z);
    }

    public IEnumerator jumpDown (float jumpHeight) 
    {
        jumpHeight = 3.0f;
        transform.position = new Vector3(transform.position.x,
           transform.position.y - jumpHeight, transform.position.z);
    }

    public IEnumerator jumpTest()
    {
        jumpUp(float jumpHeight);
        yield return new WaitForSeconds(1);
        jumpDown(float jumpHeight);
    }

    // Update is called once per frame
    void Update () 
    {
        jump = Input.GetKey(KeyCode.Space);
        if (jump == true)
            jumpTest();
    }
}

Answer 1

有几件事不允许您的代码编译。

首先，您指定您的jumpUpandjumpDown方法将返回一个IEnumerator但是，您不返回一个。如果你不需要在jumpUpand jumpDownthan 中等待一段时间，它们应该有一个返回类型void而不是IEnumerator。

public void jumpUp (float jumpHeight) 
{
    jumpHeight = 3.0f;
    transform.position = new Vector3(transform.position.x,             
                                     transform.position.y + jumpHeight,
                                     transform.position.z);
}

public void jumpDown (float jumpHeight) 
{
    jumpHeight = 3.0f;
    transform.position = new Vector3(transform.position.x,
                                     transform.position.y - jumpHeight, 
                                     transform.position.z);
}

其次，在您的jumpTest方法中，您尝试调用jumpUp并jumpDown传入您的jumpHeight变量。您不需要float在要传递的变量前面使用关键字，因为您不是在创建新变量，而是在使用已经存在的变量。

public IEnumerator jumpTest()
{
    jumpUp(jumpHeight);
    yield return new WaitForSeconds(1);
    jumpDown(jumpHeight);
}

最后，为了使IEnumerator方法正常工作，您需要使用StartCoroutine(). 例如，在您的更新方法中：

void Update () 
{
    jump = Input.GetKey(KeyCode.Space);
    if (jump == true)
        StartCoroutine(jumpTest());
}

Answer 2

    public IEnumerator jumpUp(float jumpHeight)
    {
        transform.position = new Vector3(transform.position.x, transform.position.y + jumpHeight, transform.position.z);
    }

    public IEnumerator jumpDown(float jumpHeight)
    {
        transform.position = new Vector3(transform.position.x, transform.position.y - jumpHeight, transform.position.z);
    }

    public IEnumerator jumpTest()
    {
        jumpUp(3.0f);
        yield return new WaitForSeconds(1);
        jumpDown(3.0f);
    }