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Question by dgoelitz · Feb 04, 2013 at 03:25 AM · javascriptcollisiontriggerdestroy

Why won't the collision work?

 #pragma strict
 
 function OnCollisionEnter(hitIt : Collision) {
 
     Destroy(hitIt.gameObject);
 }

I am trying to make a another primitive sphere be destroyed when it collides with this one. Both spheres have a collider and this one is a trigger. The other has rigid body. I tried changing something in the script and I got a compiling error so I know it's using the script.

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avatar image dgoelitz · Feb 04, 2013 at 07:20 AM 0
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Thanks to both of you. I realized after I posted this that the trigger was the problem.

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Answer by DryTear · Feb 04, 2013 at 04:04 AM

OnCollision functions use (col : Collision){ - and it does not need to be isTrigger

OnTrigger functions use (col : Collider){ - This one needs to be isTrigger

That means that none of those two SphereObjects need to be checked as isTrigger

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Answer by gribbly · Feb 04, 2013 at 05:45 AM

If this is the script attached to the trigger, you want to do this instead:

 function OnTriggerEnter(hitIt : Collider){
   Destroy(hitIt.gameObject);
 }

Reason: Collider components set to be "trigger" send the OnTriggerEnter message, not the OnCollisionEnter message.

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Answer by Ermarrero · Apr 07, 2014 at 01:58 AM

Also make sure one of the colliding objects have a rigidbody attached.

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avatar image getyour411 · Apr 07, 2014 at 02:03 AM 0
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Please don't necro answer a post like this; nearly a year later and after a thank-you from OP that is was resolved...

avatar image Ermarrero · Apr 07, 2014 at 02:27 AM 0
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huh?? not sure what your talking about but I added that comment for the simple fact that most newbies forget to add a rigidbody and then their ontrigger event does not work.

avatar image getyour411 · Apr 07, 2014 at 02:30 AM 0
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$$anonymous$$aybe you didn't notice the date. We don't go back and add such comment/answer to every 'how do I access var from script b in script a' either.

avatar image Ermarrero · Apr 07, 2014 at 03:05 AM 0
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oh lol i thought it was feb 2014 sorry about that

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