Overview
so to make a map for half life:opposing force I used the free version of J.A.C.K. You need to open jack and go to tools then options and pick game profiles and next to the bar that says half life or some game there is a bar that says edit click it then click add name then name it what ever you want now close it. then next to the big empty box it says add then go to where you installed jack and go to half life and click the one that says op4.fgd then go to directories. For the Game executable then go to where you half life game is then find the hl.exe and pick it then for the next one go to you hl1 file and pick the grearbox folder just skip the next one and for the next one go to grearbox and go to maps and pick it and skip the next one then go to textures. go to the hl file and pick valve and pick all the .wad’s and then (not in the valve folder in the hl folder) go to grearbox and pick all the .wad’s then go to build program and go to the jack file and pick half life and pick what go’s with the name of the one you picked so for csg = hlcsg.exe and bsp = hlbsp.exe and so on. That’s it and feel free to comment stuff