Gravity Engine 2

Gravity Engine 2

Version 4.0 (October 20, 2024)

Gravity Engine 2 is a Unity asset that provides gravitation simulation and orbital mechanics.

Gravity Engine 2 provides a complete toolkit for your space game physics.

  • create and configure orbits with editor and in-scene views

  • support for manual maneuvers, Hohmann and Lambert transfers

  • propagators for KEPLER, SGP4, ephemeris and PKEPLER motion

  • ability to use multiple evolution engines (no singletons!) in a scene

  • optional use of the Unity job system to offload physics calculations

  • clear separation between gravitational computation and the display of objects, optional multiple displays

  • simple, focused API

  • clear separation of world, physics and display scales

  • support for patched conic evolution

  • ability to build ALL of the solar system (planets, moons and small objects) in a sensible hierarchical model

  • rocket launch with ascent steering

  • circular three body evolution (cis-lunar etc.) with ability to import halo orbits from JPL

Promo video

There are “quick tour” videos for the sample folders:

Doxygen

next

Overview and “Hello Orbit”