I have a cube being moved by a physics constraint as though it were a piston.  When I jump my character on top of it, when the cube moves away, the character doesn’t move with it.  Is there a way to make him have “friction” so he moves with the ground beneath him?

Does it not work to simply set the friction property on each of the rigid bodies to anything other than zero?

No, that seems to have no effect.

I read somewhere on the bullet forum, the accepted method was to update the character with the platform position.

Do you have some hints about how that’s accomplished?  The character controller is a little quirky.  I think I need to apply force to it perhaps?  I’m not at my computer right now to test, so any tips would be appreciated.

Yeah, never seen the usefull bit about how )

Not really tried anything more than
if (onPlatform)
character.warp(new Vector3D(platformRb.position.x , character.ghostObject.position.y, character.ghostObject.position.z) );

Quick update, that sort of works, but I need to figure out the initial X offset and to handle the character walking. If you keep setting the X value he doesn’t walk left or right on the moving platform, which is obviously not correct.  It’s trickier than it sounds!  But it’s Friday, so it’ll have to wait.