WaitForSeconds error

Question

I'm new to c# and coding, sorry if I sound like a noob... I don't know how to fix the waitforseconds error, and I don't know what's wrong.

public float restartDelay = 2f;

public TextMesh failText;
public TextMesh failTextGame;

private void Start()
{
    failTextGame.text = "";
}

System.Collections.Generic.IEnumerable<bool> OnTriggerEnter(Collider other)

{
    if (other.gameObject.CompareTag("Wall"))

    {

        failText.text = "Game Over!";
        failTextGame.text = "Try Again";
        yield return new WaitForSeconds(restartDelay);
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }
}

}

Welcome to GDSE. You mentioned an error in your question; please include the actual error message text/info as it makes it far easier for others to answer. — Pikalek
– Pikalek, Commented Apr 22, 2019 at 16:05

Hellium · Accepted Answer · 2019-04-11 10:21:25Z

2

Calling WaitForSeconds inside of the OnTriggerEnter function is perfectly fine since this function can be handled as a coroutine by Unity. Having an additional function is not needed.

The only problem with your code is the return type of the function

System.Collections.Generic.IEnumerator OnTriggerEnter(Collider other)    
{
    if (other.gameObject.CompareTag("Wall"))    
    {    
        failText.text = "Game Over!";
        failTextGame.text = "Try Again";
        yield return new WaitForSeconds(restartDelay);
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }
}

answered Apr 11, 2019 at 10:21

Hellium

2,9491 gold badge13 silver badges27 bronze badges

\$\begingroup\$ I checked the documentation and it indicated that OnCollisionEnter could be a coroutine but made no such indication for OnTriggerEnter. Although I did not test it to be sure. Are you certain that OnTriggerEnter can be a coroutine? \$\endgroup\$

Ed Marty
– Ed Marty

2019-04-11 14:18:18 +00:00
Commented Apr 11, 2019 at 14:18
2

\$\begingroup\$ 100% certain, I've checked it in an empty project, and works perfectly. \$\endgroup\$

Hellium
– Hellium

2019-04-11 14:47:34 +00:00
Commented Apr 11, 2019 at 14:47

Add a comment |

Ed Marty · Accepted Answer · 2019-04-10 23:23:07Z

1

Sean’s answer is correct. However, since all you are doing is waiting before calling a method, you could just use Invoke instead:

private void OnTriggerEnter(Collider other)
{
    if (other.CompareTag("Wall"))
    {

        failText.text = "Game Over!";
        failTextGame.text = "Try Again";
        Invoke("Restart", restartDelay);
        //Alternatively, if you are using a version of C# that supports nameof:
        //Invoke(nameof(Restart), restartDelay);
    }
}

private void Restart()
{
    SceneManager.LoadScene(SceneManager.GetActiveScene().name);
}

answered Apr 10, 2019 at 23:23

Ed Marty

5,2591 gold badge14 silver badges15 bronze badges

\$\begingroup\$ it says that 'Restart': member names cannot be the same as their coding types...I'm not sure what this means \$\endgroup\$

chublisa
– chublisa

2019-04-12 18:54:38 +00:00
Commented Apr 12, 2019 at 18:54
\$\begingroup\$ Is this class named Restart? \$\endgroup\$

Ed Marty
– Ed Marty

2019-04-13 00:27:57 +00:00
Commented Apr 13, 2019 at 0:27

Add a comment |

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