bevy-nbody

An N-body simulation in Rust using the bevy crate for rendering and bigbang crate for the n-body calculations.

youtube video

Note: I made this shortly after bevy was initially released so it's a bit out of date now. Also, I haven't really worked with ECS before, so you probably shouldn't use this as an example of how to structure a bevy game.

Install

Clone the repo, and run cargo build --release. The executable will be under target/release/.

Usage

Usage: bevy-nbody [-n <num-bodies>] [-t <time-step>] [-w <width>] [-h <height>] [-s <scale>]

n-body simulation in bevy using bigbang

Options:
  -n, --num-bodies  number of bodies in the simulation
  -t, --time-step   granularity of simulation (how much each frame impacts
                    movement)
  -w, --width       initial width of spawned window
  -h, --height      initial height of spawned window
  -s, --scale       initial scale of view (bigger = more zoomed out)
  --help            display usage information

Controls

key	control
R	reset the simulation
Space	pause / resume the simulation
Left Click	hold and move mouse to pan the view
Middle Click	hold and move mouse up and down to zoom in and out
Right Click	click on a body to focus the camera on that body