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Question by aweshum · Mar 05, 2018 at 05:25 AM · c#lerponmouseoverfadeinonmouseexit

How do I lerp to a color?

I have a sprite that, when I mouse over it, I want it to appear slowly. Like a glow behind the player. But I don't know how to do it exactly.

I tried using lerp. And I got nothing. The sprite appears on OnMouseEnter and dissapears in OnMouseExit.

I tried OnMouseOver as well.

So far nothing seems to work.

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avatar image Chik3r · Mar 05, 2018 at 06:37 AM 0
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To fade in and out?

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Answer by yummy81 · Mar 05, 2018 at 06:43 AM

Put your sprite in the scene, add collider to it and the script below. You can use OnMouseEnter simply turning it into coroutine (or you can create a separate coroutine and run it from "normal" OnMouseEnter). Here's the code:

     private SpriteRenderer sr;
     
     private void Awake()
     {
         sr = GetComponent<SpriteRenderer>();
         sr.color = new Color(1f, 1f, 1f, 0f);
     }
     
     IEnumerator OnMouseEnter()
     {
         Color start = sr.color;
         Color target = new Color(1f, 1f, 1f, 1f);
         float t = 0f;
         float duration = 3f;
         while(t < 1f)
         {
             t += Time.deltaTime / duration;
             sr.color = Color.Lerp(start, target, t);
             yield return null;
         }
     }

 
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