N-body simulation in pygame. Supports saving/loading, custom colours, click-drag to shoot, right click to remove masses. Save your own preferences in settings.json. Consider lowering trail_length for better performance. sim_precision increases numerical accuracy somewhat, but isn't that important in general. It's actually also the framerate, so keep it at least at your monitor's value (blame pygame for this).
Left click and drag to shoot a body in a direction. Just click for no initial velocity.
Mouse wheel or +/- to adjust placed body mass.
SPACE to pause and unpause.
Right click on a body to delete it.
F to toggle camera centering.
DEL to clear all bodies.
S to save current system.
L to load system in `save.data`
R to toggle 1/r^2 and 1/r gravity.
| Falling in |
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| Drifting together |
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| Orbits around a binary system |
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| Another binary pair |
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By default, we use realistic 1/r^2 gravity, but a 1/r option is included. You can toggle this by pressing 'R'. The reason for this is that the simulation tends to create more interesting (stable), though unphysical patterns under 1/r gravity.
| Chaotic 1/r system |
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