OpenSim Network Grid – Nexa Physics Development

This video shows our ongoing Nexa Physics development inside OpenSim Network Grid, focused on making trucks and trailers behave more like real vehicles instead of simply moving as one rigid object.

We are developing a functional fifth-wheel / trailer hitch system where the trailer remains connected to the truck through a dedicated hitch point while still being able to pivot independently. The goal is to reproduce realistic trailer behavior during normal driving, tight turns, reversing, and jackknife situations.

The system includes the fifth-wheel connection point, a soft-lock hitch prim that keeps the trailer attached while allowing movement, independent truck and trailer rotation, controlled following distance, and speed tuning so the trailer can stay synchronized with the truck through different gears.

We are also refining how the trailer reacts when backing up. Instead of simply following directly behind the truck, it needs to pivot naturally around the fifth-wheel connection and progressively angle into a realistic jackknife position.

This is part of a larger project to push OpenSim beyond traditional social-world movement and develop more advanced vehicle physics, interactive systems, scripted gameplay, and realistic physical behavior.

OpenSim Network Grid is the platform.
Nexa Physics is our developing physics technology.

see video ====> https://youtu.be/yLKyNhcim28?si=uvDuPSgtnzBxqtXu
Development is ongoing, and each test brings the system closer to realistic truck and trailer handling inside OpenSim.


#OpenSim #OpenSimNetwork #NexaPhysics #VirtualWorlds