unity StartCoroutine() function does not calling function

Question

Can some help my why does this code not executing I get the 2 debug messages from the CallRollDice function but nothing from the RollDice function.

public void CallRollDice() 
    {
        Debug.Log("clicked");
        StartCoroutine("RollDice");
        Debug.Log("ran");
    }
    private IEnumerable RollDice()
    {
        Debug.Log("called");
        
        int randomInt1;

        for (int i = 0; i < 10; i++)
        {
            randomInt1 = Random.Range(0, diceFaces.Length);
            diceImage.sprite = diceFaces[randomInt1];
            yield return new WaitForSeconds(0.05f);
        }
    }

When i researched the topic i found out that StartCoroutine function in some cases requires a function but in my case it is requires a string.

I am using unity version 2021.3.30f1 (lst)

@OP if additionally you would use the direct call StartCoroutine(RollDice()) instead of going string/name based the compiler would tell you the issue right away ;) — derHugo
– derHugo, Commented Nov 14, 2023 at 16:12

shingo · Accepted Answer · 2023-11-12 12:04:15Z

3

The documentation says:

A coroutine is a method that you declare with an IEnumerator return type and with a yield return statement included somewhere in the body.

So you should change the return type to IEnumerator.

private IEnumerator RollDice()

answered Nov 12, 2023 at 12:04

shingo

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Comments

marc_s · Accepted Answer · 2023-11-23 16:46:40Z

1

IEnumerator instead of IEnumerable:

private IEnumerator RollDice()

Although strings can cause a run-time error if you typo in them. So you get the error at compile-time, I recommend:

StartCoroutine(RollDice());

// or

IEnumerator coroutine = RollDice();
StartCoroutine(coroutine);

edited Nov 23, 2023 at 16:46

marc_s

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answered Nov 12, 2023 at 12:03

Dustin_00

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