Mesh Collider falling through?

Question

Here is my model. http://img17.imageshack.us/img17/8126/cubemodel.png

I have also made some small cans, a pipes, a custom crate and a wheel in 3dsmax. This is the garbage items that I want to lay on the floor.

In Unity, I have applied a Mesh Collider on the big model. Then I put the small item models in the scene and drag them inside the model, "hovering" a few inches over the floor. Then I also apply mesh collider on them and checkbox "convex" on all of them. And the ridgidbody after that also ofcourse.

When I run my game, my crate and my wheel gets stuck on the floor, rest of them falls through the ground. What have I done wrong?

Do I need to apply mesh/rigidbody in a specifik order or something?

Ask me if I explain bad.

Thank you!

Answer 1

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Answer by xeophin · Oct 26, 2010 at 04:05 PM

Have you checked that the "Trigger" checkbox is not set?

Also, the mesh collider of the interior model should not be set to convex.

And when the objects are very small or move very fast, they might drop through other colliders.

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Ludde · Oct 26, 2010 at 04:47 PM 0

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Trigger is NOT set. Interior model is NOT convex.

It seems to help placeing the items near ground. But the smallest pipe still falls through the model. Is there some way of slowing acceleration further?

xeophin · Nov 01, 2010 at 08:23 AM 0

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Maybe you can set the Solver Iteration Count to a slightly higher count in Edit > Project Settings > Physics? Without complete knowledge about your project it is kinda hard to say ;)

Mesh Collider falling through?

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