Ok i did some research and entity can already add water to a bsp. there is a plugin for editing water level made by my friend killingforfun, but no program can read it and he said the offset for it moves around.. so curently it is inpossible... I think
Wow, how much do you even know about halo 2's map format? Seriously don't create programs just because you want attention, and if you just started programming, Halo 2 programming is nowhere near a good idea to start. Mostlikely your application will be buggy, slow and improper, because you have little programming expirience(assuming you just started), and you probably don't care about the integrity of the map being worked on. So we'll have a ton of thrashed, non-serenity compatible maps.
I wanted to make a app b/c i was very bored. I am experienced enough with programming. I can make plugin systems, i was project leader of a project not to long ago and i am currently in another project right now. I am experienced enough do do alot of things, and i have not just began programming.