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Question by vleonc · May 23, 2018 at 03:55 AM · c#materialsparent-child

How to change children's material of gameobject on trigger?

Hi guys,

So I have a gameobject that is triggered, on this trigger I want it to change the material of its children or of the children of another gameobject.. I have no idea how to do this!

alt text

Basically og1 is triggered and I want Lighthouse and its children's material to be changed on this trigger.

Hoping you guys can help!

Here's a terribly wrong version of my code:

 public Material newMat;
 public GameObject objectToChange;

 void OnTriggerEnter (ChangeMaterial newMat)
 {
     Renderer[] children;
     children = GetComponentsInChildren<Renderer>();
     foreach (Renderer rend in children)
     {
         var mats = new Material[rend.materials.Length];
         for (var j = 0; j < rend.materials.Length; j++)
         {
             mats[j] = newMat;
         }
         rend.materials = mats;
     }
 }

}

screen-shot-2018-05-23-at-15136-pm.png (17.3 kB)
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Answer by spilat12 · May 23, 2018 at 04:55 PM

I just checked your script and can verify that it works well. Perhaps, you did not add rigidbodies to your objects?

Here's a slightly optimized version of your script:

     public Material newMat;
     public GameObject objectToChange;
     Renderer[] children;
 
     void Start()
     {
         children = GetComponentsInChildren<Renderer>();
     }
 
     void OnTriggerEnter()
     {
         foreach (Renderer rend in children)
         {
             var mats = new Material[rend.materials.Length];
             for (var j = 0; j < rend.materials.Length; j++)
             {
                 mats[j] = newMat;
             }
             rend.materials = mats;
         }
     }
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avatar image spilat12 · May 31, 2018 at 11:29 AM 0
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@vleonc did you solve this problem?

avatar image vleonc spilat12 · Jun 01, 2018 at 01:05 PM 0
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Yes, thank you so much! I forgot to reply sorry, knee deep in assessments. Appreciate the help mate!

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