gravity-sim

N body gravity sim with rust and ggez, made to learn rust

Initially written with OOP, made a new version with specs that runs about 20% better on my desktop PC, but slightly worse on my laptop. Maybe because it parallelizes a lot more?

Web port made with quicksilver, lots of features missing:

https://mkhan45.github.io/gravity-sim-rs/

Controls

Arrow keys to move

Scroll to zoom in/out

Q/A to increase/decrease radius of next placed body

W/S to increase/decrease density (try making it negative)

E/D to increase/decrease trail length (removing trails increases performance by a lot)

X/Z to increase/decrease prediction speed, setting it to 0 turns of predictions.

Left click to place a body, dragging before releasing makes an initial velocity vector.

Right click over a body to delete it.

G creates a 10x10 grid of bodies with the specified radii and densities.

R to reset.

Running

Windows

1. Go to the binaries folder and download the exe and the dll to the same folder and run.

Linux

1. Go to the binaries folder and download the linux executable and run. You need SDL2 installed.

Mac

1. Build it yourself

Building

1. Install rust and switch to the nightly toolchain.
2. You need SDL2 build dependencies.

cargo build --release