I’ve been working on a Simple Physics Library, as the one built-in to JME, though excellent, is overkill for my needs. I wanted something that handled collisions and simple gravity and bouncing. I plan to use it in my forthcoming open-source multiplayer game, but for now here’s the source code for anyone who wants something like this.
Source code is here: https://bitbucket.org/SteveSmith16384/simplephysicsforjme
Video of HelloSimplePhysics in action: https://www.youtube.com/watch?v=hLJgE911qXE