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Question by Sydious · Mar 23, 2012 at 02:16 AM · scriptingbasicscollisionschild object

Checking for collision with a specific child object.

I am trying to understand collisions.

I have a gameobject that has many child objects.

I want to detect a collision when only 1 specific child object is hit.

I only seem to be able to detect collisions with the partent object.

How can I detect if the collision happened with the child object only, and ignore all other child obejct collisions?

Basically if I have:

  • Parent obejct

  • Child 1

  • Child 2

  • Child 3

  • Child 4

and I want to only do something when a gameobject collides with Child 3.

Is that possible? If so can someone give me an example on how to achive this?

Thanks for any help...

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Answer by farooqaaa · Mar 23, 2012 at 07:36 AM

Add a tag to Child3 and then check for it in OnCollision() method:

 void OnCollisionEnter(Collider collider)
 {
     if(collider.tag == "child3Tag")
         //.. do something
 }
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avatar image Bonifatius GK · Dec 05, 2012 at 05:43 PM 0
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and how to check the child object collided with ?

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Answer by astorga · Dec 05, 2012 at 06:03 PM

You can identify the child GameObject uniquely (using a tag), or you can put the collision detection script directly in the child GameObject (if this GameObject's collision should be detected by any other GameObject, I think this option is better).

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