yunruse / oxomoco

An amateur gravity simulation

Oxomoco

aka "How Not To Do Gravity"

When I was 17, I was taught, formally, the law of gravitation. So, of course, I hacked together a 2D gravity simulator in Löve in my spare time! And as it turns out, two years later in University, I got an assignment to make what was, essentially, this but with a few bits more. Neat, huh?

It's completely a toy project, but it has:

• reference frames, showing you different paths in different reference frames!
• A renderer for the gravitational field strength, which is CPU-bound so a lil slow
• A neat grid system which fades in different grid sizes as you zoom (Scrollwheel)!
• A simulation speed slider (Shift+Scrollwheel), which has no simulation speed limit so you can very quickly go into the Unphysical Realm and fling the Moon into the great beyond!
• The ability to move things around in real-time, or add random comets, and see how they, ah, destabilise things!

I never got to include the Solar System with accurate orbits (because I was a kid), but I still think this is pretty neat considering I was 2017 and, like, barely sentient. Clearly so, because this thing runs its own object-oriented engine and physics.

Instructions

Download Löve, extract this to a folder of your choice, and run love path/to/oxomoco. You might need an older version to run without bugs, sorry.

In addition to the tools available on 1, 2, 3 and 6, the following controls exist:

• Space: pause and play simulation
• Scrollwheel: zoom in and out
• Shift-scrollwheel: Make time run faster or slower
• F5: Restart
• F11: Fullscreen
• 9: Go into grid move
• 8: Show gravitational field strength (press F2 to render - it's slow!)
• D: Toggle debug display
• T: Toggle body titles
• P: Toggle paths
• C: Toggle connections between bodies
• V: Toggle velocity vector
• B: Toggle body

License

2017 – 2019. To the extent possible under law, Mia yun Ruse has waived all copyright and related or neighboring rights to Oxomoco. .