So I have been coming here a while now, I thought I'd make an account and post what I've been working on as it might be helpful to someone else.
I've been converting haxe code to as3 to be able to use Nape with flixel.
I have FlxNapeState, FlxNapeSprite, and FlxAngle converted and working and changed to FlixelNapeState, FlixelNapeSprite, and FlixelAngle, with the exception of a bug or two.
Ive yet to try constraints as I'm still learning Nape.
If I change states to quickly I get an error at flxbasic, And it's possible that there may be a memory leak.
If anyone can spot any problems or add to these classes I believe this would be helpful to the community when finished.
You will need to have the power tools and you will also need nape.swc added to your library.
Here is what i have so far.
Here is a link to it on github!https://github.com/bumblefish/FlixelNape