liquidfun-play

Note: Requires Chrome/Chromium-based browser in development. Firefox and Safari supported after production bundle.

Demo

Demonstrates functionality of box2d-wasm's liquidfun release.

Main aim was to achieve high framerate by:

• avoiding allocations in main loop
  • no new
  • no []
  • no {}
  • pre-allocate structures
  • fewer allocations = (fewer?) (shorter?) GC pauses
• minimize JS->wasm calls in favour of accessing Emscripten heap directly
  • well, maybe this doesn't matter
• physics via WebAssembly in a web worker
• rendering in WebGL
  • renderer is in same thread as physics… not ideal, but makes the timing easy to reason about, and eliminates need to post world state to another thread.
    • maybe SharedArrayBuffer would be an alternative which cheaply enables another thread to render the world state.

Usage

npm start

Runs the app in the development mode. Open http://localhost:8080 to view it in the browser.

License

This repository is Zlib-licensed (full text in LICENSE.zlib.txt).
Additionally, contributions ported from the liquidfun repository are licensed as described in LICENSE.liquidfun.txt.