I want to emulate the game logic server-side. Regretfully I haven’t found exact information regarding the version of PhysX used in Unity, but after reading the changelog I believe that it is 2.8.3.
Is it at all possible to emulate Unity behaviour (with great precision) of obects on pure PhysX serverside? If yes, then is version 2.8.3 correct, or may I use any other version? It seemed that it is difficult to find this old version of PhysX.
The version of PhysX used in Unity currently is 2.8.3. Whether you will get good results exactly emulating Unity’s PhysX behavior on a server running PhysX, I have some doubts. You will probably be able to approximate it, but it won’t be easy, as there are many parameters to tweak, and getting PhysX to be deterministic is difficult to say at least (behavior depends on the underlying FPU model, as well as on initialization order of objects, among other things). But with enough work, you can probably come up with a good enough approximation to use the server as the authoritative source, and synchronize client results to that.