Unity教程，IEnumerator ShotEffect()，错误

Question

[Unity 版本 5.6.1f1； Visual Studio2017]

嗨，我正在学习使用 Raycast 的基本 Unity FPS 教程。调用

时出现错误

私有 IEnumerator ShotEffect()

如下，

Feature "local Functions" is not available in C#4. Please use Language version 7 or greater.

我该如何解决这个问题？这是 Unity 教程中的 copy/pasted。这种类型调用有替代方法吗？ https://unity3d.com/learn/tutorials/lets-try/shooting-with-raycasts?playlist=41639&_ga=2.32575166.1847645017.1499027918-1229599585.1498623818

 void Update() {
        if (Input.GetButtonDown("Fire1") && Time.time > nextFire)
        {
            // Update the time when our player can fire next
            nextFire = Time.time + fireRate;

            // Start our ShotEffect coroutine to turn our laser line on and off
            StartCoroutine(ShotEffect()); //**Call here**

            // Create a vector at the center of our camera's viewport
            Vector3 rayOrigin = fpsCam.ViewportToWorldPoint(new Vector3(0.5f, 0.5f, 0.0f));

            // Declare a raycast hit to store information about what our raycast has hit
            RaycastHit hit;


        }

         private IEnumerator ShotEffect() //**Error here**
        {
            // Play the shooting sound effect
            gunAudio.Play();

            // Turn on our line renderer
            laserLine.enabled = true;

            //Wait for .07 seconds
            yield return shotDuration;

            // Deactivate our line renderer after waiting
            laserLine.enabled = false;
        }

Answer 1

您已经在函数 ShotEffect 中定义了 Update 函数。检查你的牙套。

void Update() { if (Input.GetButtonDown("Fire1") && Time.time > nextFire) { // Update the time when our player can fire next nextFire = Time.time + fireRate; // Start our ShotEffect coroutine to turn our laser line on and off StartCoroutine(ShotEffect()); //**Call here** // Create a vector at the center of our camera's viewport Vector3 rayOrigin = fpsCam.ViewportToWorldPoint(new Vector3(0.5f, 0.5f, 0.0f)); // Declare a raycast hit to store information about what our raycast has hit RaycastHit hit; } } // Add brace here private IEnumerator ShotEffect() { // Play the shooting sound effect gunAudio.Play(); // Turn on our line renderer laserLine.enabled = true; //Wait for .07 seconds yield return shotDuration; // Deactivate our line renderer after waiting laserLine.enabled = false; }

Unity教程，IEnumerator ShotEffect()，错误

Unity Tutorial, IEnumerator ShotEffect(), error

c#

debugging

unity3d

ienumerator