tgrav

A simple terminal gravity simulator written in Go

Controls

• +/- changes the speed of the simulation
• f enables the rendering of the acceleration magnitude
• c toggles clearing the screen each frame (allows to see traces behind moving objects)
• mouse wheel scrolling zooms in and out
• mouse panning (while holding left mouse button) moves the view around

Notes

• For better rendering resolution all bodies are drawn as dots using Braille symbols
• The camera automatically moves with the center of mass of the system
• I'm running it in Kitty on Linux, it also works on Windows, but can be slow (tested with Windows Terminal)

Demo

A system of 4 bodies showing the acceleration amplitude surrounding them

A system of 3 bodies with the same mass

Gravitational slingshot