Create DoTween from for loop?

Question

I'm trying to animate GUI values in my game that are stored as a list of integers. For this, I've tried to set up the following code using doTween.

     for (int i = 0; i < importantShoppingStats.Length; i++)
     {
         if (oldShoppingStats[i].statNumber != importantShoppingStats[i].statNumber)
         {
             Debug.Log("NEW TWEEN!");
             Tween valueTween = DOTween.To(() => (float)displayShoppingStats[i].statNumber, x => displayShoppingStats[i].statNumber = (int)x, (float)importantShoppingStats[i].statNumber, updateTime).SetOptions(false);
             oldShoppingStats[i] = importantShoppingStats[i];
         }
     }

This seems to not animate the values at all. However, if I do this, it seems to work fine for the one value I'm setting.

 if(oldShoppingStats[0] != importantShoppingStats[0])
             {
                 Tween valueTween = DOTween.To(() => (float)displayShoppingStats[0].statNumber, x => displayShoppingStats[0].statNumber = (int)x, (float)importantShoppingStats[0].statNumber, updateTime).SetOptions(false);
             }

I don't really understand what is happening differently when I put this if statement in the forloop that causes DoTween to act differently. I'll be honest, this is my first lambda expression and I don't have a very good grasp on that either. Any help would be greatly appreciated.

Answer 1

Answer by Bambivalent · Feb 21 at 12:28 PM

I hated this problem for years and forgot how I solved it in previous projects :D

I just found out that if you wrap each DOTween.To method in a coroutine, it works well!

This should work:

 IEnumerator Do(int i) {
              Tween valueTween = DOTween.To(() => (float)displayShoppingStats[i].statNumber, x => displayShoppingStats[i].statNumber = (int)x, (float)importantShoppingStats[i].statNumber, updateTime).SetOptions(false);
              oldShoppingStats[i] = importantShoppingStats[i];
 yield return null;
 }

Starting the coroutine without quotes will allow you to pass the iterator:

 StartCoroutine(Do(i));

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Create DoTween from for loop?

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