Starling. Citrus. IntelliJ Idea

http://citrusengine.com/tutorials/

http://citrusengine.com/getting-started-citrus-starling-box2d/
https://vimeo.com/23165770
http://forum.starling-framework.org/topic/hero-following-mouse-with-eazing

https://github.com/alamboley/Citrus-Engine/blob/master/CHANGELOG.md
http://napephys.com/help/manual.html
http://napephys.com/samples.html#