The vertex animated meshes use an md3 format which is a format developed by id software for idtech3 (Quake 3 engine). id tech 3 became open source in 2005, warrider came out in 2006. This explains why mount and blade's engine is a disaster graphically, using a 1999 engine. A 2008-2010 game that doesn't even have dynamic shadows or self shadowing, lol. This also mean the MB language is C, just lol at MB's language being python. MB Warband/MB game engine and game engine language, mystery solved.