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Question by Bizio · Nov 23, 2020 at 04:48 PM · editorspriteunityeditorscritping

How to know when field value was edited? (Can't use property!)

I want to create SpriteGroup script that will update every SpriteRenderer in child objects. Let's say I have a parent with SpriteGroup script holding 3 sprites.

alt text

Then I want to have Color field in SpriteGroup that will update Color field in all SpriteRenderer components in children under this group.

alt text

How do I achieve it? It should also work with Animation, I want to animate whole object going transparent by editing this single Color field in SpriteGroup and that would edit also all Color fields in SpriteRenderer's

I've written something like this but I don't know if its right direction

 public class SpriteGroup : MonoBehaviour
 {
     SpriteRenderer[] spriteRenderers;
 
     public Color color;
 
     void Start()
     {
         spriteRenderers = GetComponentsInChildren<SpriteRenderer>();
     }
 
     public void ColorChange() //Call this method then 'color' is edited'
     {
         foreach (var renderer in spriteRenderers)
         {
             renderer.color = color;
         }
     }
 }

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Answer by myzzie · Nov 23, 2020 at 05:47 PM

OnValidate() does exactly that.

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avatar image Bizio · Nov 24, 2020 at 12:37 AM 0
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It doesn't fire in the build, It's only for editor updates

avatar image myzzie Bizio · Nov 24, 2020 at 02:31 AM 0
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 private Color color;
 
 public void ChangeColor(Color color)
 {
     this.color = color;
     ColorChange();
 }

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