Universe Sandbox 2D Scratch Edition (WIP)

Description

Credits: Me: Sol, Mercury, Venus, Earth, Luna, Mars, Jupiter, Saturn, Caelus, Neptune, Pluto, Jupiter rings, Saturn rings, Uranus rings, Neptune rings, the majority of the code Gemini AI: part of the code, including most calculation formulas, gravitational constant, the main calculation for acceleration, temperature, and the formula for density and mass after a collision

Instructions

green flag the add menu is being worked on right now (also some of the code and art is AI generated with a few adjustments from me, but most of it I made myself) Current max custom presets: 291 Current max total presets: 294 (sorry but these numbers will decrease) 6/12/2025: 3:00 PM - Project is shared 3:42 PM - Add menu is added 8:37 PM - planet slots have been added (Hg-Sat) 9:36 PM - planets can be placed and they do rotate. 9:40 PM - fixed bug where you can place an object with a glitched texture and mass while your mouse is in the menu 6/13/2025: 6:03 AM - Gravity is added, still mode works 6:08 AM - You can now lag the game out! :D 6:40 AM - fixed the bug where time pauses when you're in add mode and holding mouse down 1:40 PM - mass calculation fixed 1:44 PM - gravitational constant fixed 1:56 PM - bug fixes 2:29 PM - even more bug fixes 3:24 PM - collisions and repelling added and fixed 4:37 PM - when adding an object, the camera now zooms in to the scale of that object 6/14/2025: 9:41 AM - now when two objects collide, the resulting object goes halfway in between the two. 9:48 AM - undid the previous change because it was buggy 3:05 PM - new object: caelus! 3:12 PM - another new object: neptune! 4:40 PM - added everyone's favorite dwarf planet since 2006, pluto :D 4:51 PM - some bug fixes lol 5:39 PM - the resulting object from collisions is now located at the proper center of mass 5:45 PM - fixed the bug with distance in collision calculating 9:00 PM - added heat (non-visual) 6/15/2025: 7:53 AM - fixed saturn's density, added spin momentum 2:46 PM - added the sun (doesn't generate its own heat yet) 6/17/2025: 7:22 PM - added orbit mode 7:57 PM - star luminosity exists 9:06 PM - Luna - first moon added to the sim 6/21/2025: 3:47 PM - in orbit mode, you can see the target orbit