It's been many years since writing this library. And I don't have time to dedicate to maintain it. On the up side, Matter.js has really stepped up and taken the spotlight of javascript physics. It has everything PhysicsJS has and more. :)

A modular, extendable, and easy-to-use physics engine for javascript.

Latest version: 0.7.0 (beta)

Please visit the website for details about installation and usage.

Distribution files are in the dist/ directory.

Source code is kept in the src/ directory. After any source code modifications it will be necessary to run the grunt build task to rebuild the source and run unit tests.

First install grunt.

Next install dev dependencies:

$ npm install

then run grunt

$ grunt

The default grunt task will create a _working/ directory with the PhysicsJS development build. You can play around with that. NOTE: the _working/ directory won't be committed (it is in .gitignore).

After you run this you can use (Mr.doob's) htmleditor in editor/ to play around.

If you want grunt to automatically create the development build when you modify the source in src/ then run:

$ grunt watch

Note grunt watch won't run unit tests.

If you are contributing a bug-fix or a very minor addition, feel free to do a pull request on the master branch.

If it is something else create a new (or existing) feature branch (eg: feature/MY_FEAT) and issue a pull request on that.

If unsure, create an issue to discuss.

Please ensure that:

• the files in dist/ are unmodified.
• the features you add are well documented with jsdoc comments if applicable.
• the code is indented with 4 space characters.

Copyright (c) 2013 Jasper Palfree https://wellcaffeinated.net/PhysicsJS/

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.