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Question by JaZZi · Jul 29, 2017 at 10:20 AM · collision detectionboxcollidercolliding

differentiate between box collider of two different Game Objects in UNITY

Hi. I have two GameObjects Body1 and Body2, Both have separate BoxCollider. i want to identify which GameObject (Body1 or Body2) have hit the other.

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Answer by CalleRC · Jul 29, 2017 at 11:17 AM

@JaZZi I'm not quite sure what you mean, but maybe this will help :D

You can give your different objects different tags, and then check if the tags on the collided object is equal to the objects tag. To give an object a tag, you need to create it under edit/project settings/tags and layers, and then apply the tag under the inspector.

 void OnCollisionEnter(Collision other) {
 if(other.transform.tag == "Body2")
 //then do something
 }

You can also choose which objects that can collide with eachother under edit/project settings/physics and then change the "layer collision matrix". To insert objects into the matrix, you need to create a new layer, under edit/project settings/tags and layers, and then apply the new layer to the object under the inspector.

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