Anyone have, or seen a physics library similar to Unity's that one can drop into a server?

Unity Engine
1

I’ve got a non-unity based server I’m building for scratch, and would love to have a library with similar Vector/translate/rotate stuff built in to do server side simulation.

I can’t quite seem to add the UnityEngine.dll as a reference to do this, as it doesn’t handle multithreading. As soon as I touch things from different threads it blows up.

2

Yes, use Physx 3.x for physics. Or ODE. or Bullet.

But unity’s transform != Physics.