How does it compare to https://github.com/Birch-san/box2d3-wasm?

[Daavidaviid]

Anyone made the switch?

[shakiba]

I will add my own answer, open to hear from other developers as well.

Before starting Planck, I used the initial emscripten box2d (kripken/box2d). I faced a couple of issues:

• It was challenging to use, for example see this issue
• It was difficult or impossible to see what's happening in the runtime

Unless you have hundreds of objects all colliding together the performance difference will be trivial.

I guess the best use-case for emscripten is when you have a game in another language and you want to compile the game and libraries together to run in browser. Or when you have a use-case where physics performance is the bottleneck, in this case it is still better to start with Planck, and then replace it when needed.