Space simulator base for Trillek. Handles the simulation of celestial bodies orbiting each other (stricly keplerian orbits for now).

Context:

• Newtonian physics
• All objects are points
• Space is centered around a sun
• Coordinates are (long long?) integer multiples of some length unit (I assume cm is precise enough)
• There will be enough planets/moons/heavy bodies to justify an efficient (restricted) n-body algorithm
• The masses of smaller bodies (asteroids, ships...) are negligible

Goals:

• Generate statistically accurate planetary system
• Simulate said system efficiently, along with smaller bodies inside
• Calculate efficiently the gravitational forces at any point in space
• Be able to fast-forward simulation (e.g. in case of unvisited parts of space)

TODO:

• Everything

The codes handles 3D even though the demo is basic 2D (for simplicity's sake).