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Question by landon912 · Nov 18, 2012 at 12:22 AM · physicscollidertriggerontriggerenter

Trigger and Collider Issues

I know that there are certain formulas for colliders as in some work with others and some don't. I have checked the unity physics page ie: Link. I need some clarification on the combinations for a project.

I have a very simple script here, but OnTriggerEnter is never returning true. I believe this is due to an invalid combination of triggers/colliders. The script is attached to a movable gameobject, which has a BoxCollider and a SphereCollider set to "isTrigger". On the other gameobject i have a BoxCollider. None of them have Rigidbodys. Any help on why OnTriggerEnter is never returning?

Some Code:

 function OnTriggerEnter(trig:Collider){
     if(trig.tag == "Building"){
     Debug.Log("Building");
     building = trig.transform.parent.gameObject;
     buidlingScript = building.GetComponent(Building);
     build = true;
     }
 }


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Answer by code-blep · Nov 18, 2012 at 01:00 AM

You need at least one rigidbody attached. I just tested your code and the only thing missing is a rigidbody on one of the gameobjects. When applied it works.

It is stated here if you want to read up on it:

http://docs.unity3d.com/Documentation/ScriptReference/Collider.OnTriggerEnter.html

Hope it helps landon91235 :)

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avatar image landon912 · Nov 18, 2012 at 03:14 AM 0
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Thanks for the answer

avatar image AlphaGarg8447 · Oct 21, 2014 at 08:53 PM 0
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Wich one, the one being triggered or the collider?

avatar image AlphaGarg8447 · Oct 21, 2014 at 08:58 PM 0
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Wait, before you answer that, I'm having an error. I know this is a really old post, but well. It says that "tag" isn't a member of "UnityEngine.Collision".

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