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๐Ÿฆข The boids flocking simulation in Wasm using Ebiten!

Boids with Go and Ebiten

My blog post: Boids in WebAssembly Using Go


๐Ÿ‘‰๐Ÿป Demo link to the WASM version.

I wrote this program, an implementation of Craig Reynolds' Boids, in order to learn more about deploying Go on the web, and to tackle a problem that escaped me when I was learning to code!


Animated GIF of a flocking simulation

Possible improvements

  • Field of vision support (boids shouldn't look behind ๐Ÿ‘€)
  • QuadTree optimization
  • Different maxSpeed/maxForce for each boid
  • Graphical interface for live-editing of values
  • Use a snapshot for each 'generation'
  • ..

Run ๐Ÿฆข

go run main.go

Build ๐Ÿ•Š

GOOS=js GOARCH=wasm go build -o dist/boids.wasm github.com/healeycodes/boids

This compiles the program into WebAssembly in the dist folder.

The simulation can be viewed in a web browser via index.html. To get this working locally, you may need to serve the files from a web server.


License: MIT.

Languages

Go87.8%HTML11.0%Shell1.3%

Contributors

MIT License
Created July 21, 2020
Updated February 1, 2026