Physics Simulation Forum

Hi All,,
I am a noob here. I hae started using a java game engine which uses a japa port of bullet physics for physics simlation.

I am in the process of making a board game where player hits a body with another body so that first one goes through a hole provided at each crner of the board.
I have made both bodies of cylindrical shape and added collision shapes to them.

But I am facing several issues, as follows:

- Even as game starts I can see bodies hacing small vibrations and even sliding slowly on surface.Ther are just not static on surface.

- When bodies come in contact they just pass through each other and no collision is there. Sometimes they do collide but most of the times they just pass through.

- Sometimes when a body collide with walls made on each side of square board body just goes into a long duration of twists and turns and spinning and what not and takes a long time to come to rest.

Can someone please guide me here?