my rigidbody go throw the ground with box collider

[stevexu]

This problem has troubled me for a long time, as shown below, the box will sometimes pass through the ground, I do not know why. I can detect a collision from OnCollisionEnter method.  I have set collider depth to 20 . From unity sense view,  I can see  the box  has the same collider depth as  ground (20).   If  set gravity as:  const float GRAVITY = -9.81f * 400  , then the box always pass throw the ground,  If  set gravity as:  const float GRAVITY = -9.81f * 500 , Most of the time it works fine,  Very few time the box go throw the ground. What's wrong ?

thanks sososo mush.

[unikronsoftware]

Try increasing the collider depth to around 100. See if that improves things?

[stevexu]

Increasing the collider depth to around 1000. And  the box go throw the ground! any suggestion?

[unikronsoftware]

I don't know what else to suggest. If you want you can email a sample project to support at unikronsoftware.com and I could take a look?

[stevexu]

Is  the gravity too big?   I set it as   -400x9.8  .  if  i set as -9.8,  it fall so  slow, but don't breakdown the  floor

[unikronsoftware]

I don't know, it very much depends on the size of things.