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Question by Stardog · May 06, 2012 at 12:02 AM · physicsrigidbodyraycastclipping

Stop picked up object clipping through walls?

To stop the object going through walls, I put it at the end of a ray if it's not hitting anything, and put it at the hitpoint if it is.

The problem is that is uses the object's transform.position, which is the center point normally, so half the object will clip through the wall.

What's the best way to make the object never go through?

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avatar image asafsitner · May 06, 2012 at 10:28 AM 1
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For rendering purposes you can use layered cameras:

One camera renders only the pickups and the other renders everything else, so the pickups always appear to be drawn over the rest of the geometry if you give the pickups camera a higher layer.

For real non-clipping objects you can use the raycast you're using, but ins$$anonymous$$d make sure you place the object at the hit point, but at a distance that equals half the width/depth of the object's bounding box.

avatar image Stardog · May 06, 2012 at 11:31 AM 0
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The bounding box thing will work unless the object is an irregular shape.

avatar image asafsitner · May 06, 2012 at 12:15 PM 0
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True.

Perhaps a rigidbody with mesh collider and using `SweepTest` will yield better results.

avatar image syclamoth · May 06, 2012 at 01:02 PM 0
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The bounding box thing will work even if it's an irregular shape- you don't want even a small part of the object clipping, so it's best to play it safe.

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