Hello, I played the undergrowth mod and really want to help improve it but I have no idea what language uses .as files. So, what language do we script in, what role do the XML files play in mods (I imagine it's a communication method between engine and map structures and such?) , and Is there a built in IDE in the in-game editor tools? Any information on modding Overgrowth would be greatly appreciated because I can't find any documentation or tutorials or anything on modding.

I would really REALLY love to help make Undergrowth the best mod it could be because it has such potential. Plus, I'd like to make my own mods or maybe even make an amalgamation of mods and put it in the workshop as a sort of 'modpack'.

Thank you for any replies, I appreciate it!