Weird Coroutine Behaviour

Questions & Answers
1

I’m not sure how to describe this problem, as I’m unable to consistently reproduce it. I’ll try my best:

  • My game has different UI screens (a shop, the title screen, game over screen, etc)
  • The screens animate into and out of view through the use of coroutines
  • the coroutines that animate them out disable them so that they don’t take up memory
  • sometimes, they don’t animate out fully

I know this is very abstract and it could be a number of things, and I can’t really post code because it’s scattered throughout the project… but any ideas why this could be happening? Any quirks to using coroutines in unity that might be responsible for this?

2

if you use a non WaitForSeconds() return, then it will have problems with the duration. Also, if a coroutine have an error, it will stops there.

3

Hello there,

You definitely should post code though. There is no way we can help you if we don’t know what’s wrong.

Regardless, here is a standard Coroutine that I use for moving objects around.

    private IEnumerator MoveToTarget_OverTime(GameObject targetObj, Vector3 targetPos, float duration)
    {
        float timer = 0.0f;
        Vector3 startPos = targetObj.transform.position;

        while (timer < duration)
        {
            timer += Time.deltaTime;
            float t = timer / duration;
            t = t * t * t * (t * (6f * t - 15f) + 10f); // smoothing - remove if you don't want it.
            targetObj.transform.position = Vector3.Lerp(startPos, targetPos, t);

            yield return null;
        }
    }

Pass it the object you want to move, the position it should move to, and the duration it should move for, and you’re good to go.

Hope that helps!

Cheers,

~LegendBacon