Physics in Javascript Using Box2D

http://somethingcoded.net/post/35794507334/physics-in-javascript-using-box2d

by bundy • 14 years ago

29 10 14 years ago

arikrak• 14 years ago

Looks cool, but I couldn't get the page to load. I was once worked on a demo of a similar kind of game to help teach physics.

bundy2• 14 years ago

ah, it might be that we only tested on chrome. the project only allowed for 48 hours of development, so we can't really say that we made the best effort to keep it cross browser compatible. once the voting period is done and the code freeze is over, we're thinking of implementing a lot of bug fixes and changes that hopefully would address that.

a1k0n4• 14 years ago

I'm using box2d (there are at least three box2d javascript implementations; the most impressive is the emscripten port from the actual C++ code: https://github.com/kripken/box2d.js but I'm using an older one for this). I wanted to prototype a simple balancing robot controller, and I hacked this up on the bus to work earlier this week in fact: http://www.a1k0n.net/code/balance.html Click to drop junk.

(Sorry, this is totally off-topic, but...) It's surprisingly easy to make a segway-like balancing robot with perfect sensors. My plan is to add noise in the sensors and limited motor torque, etc. Ideally it would estimate its own kinematic parameters and do an A* search for approximate optimal control.

bundy2• 14 years ago

hey a1k0n, we'll definitely have to take a look at the port you dropped in your post. we didn't do a ton of research before hand, but we were debating between box2djs and box2dweb. in the end we choose box2dweb since it's self contained within a single file and was supposed to be more up to date.

i don't think what you're saying is totally off topic. box2d is pretty awesome and it's surprisingly easy to get physics simulations up and running using the library.

Physics in Javascript Using Box2D

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