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Question by bartm4n · Oct 15, 2015 at 04:05 PM · terraincollision detectionrigidbody-collisionrigidbody physics

Rigidbody is entering steep slopes on terrain

I've got a bit of a weird issue in which the player controlled rigidbody is entering but not falling through steep slopes on standard Unity terrain. I am using a capsule collider and I am using RigidBody.MovePosition() where Physics code belongs in FixedUpdate().

Edit: I am using Unity 5.2.1p1 Personal Edition.

The entire model and collider will actually disappear inside of the slope, but it hits an invisible wall where it can't go any further and then I can walk right back out of it.

Thanks for your time and any advice that you can offer.

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avatar image meat5000 ♦ · Oct 15, 2015 at 04:20 PM 0
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Is this everywhere in the terrain? Which version of Unity?

avatar image bartm4n meat5000 ♦ · Oct 15, 2015 at 04:23 PM 0
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Not everywhere on the terrain, only steep slopes that would be comparable to a canyon wall (near perpendicular, but not quite) as shown in the attached image.

I forgot to mention that this is done with Unity 5.2.1p1 Personal edition.

Thanks

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Answer by bartm4n · Oct 17, 2015 at 06:26 AM

For those interested, I think that it ultimately had something to do with the height difference from one pixel of the heightmap to the next.

What I did to hide the issue was take the terrain smoothing tool and set it to a size of 1 and smooth the problem spots.

It doesn't seem to change how the terrain is rendered, but it adjusts the collider somehow.

I hope that this helps someone else out there.

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