Quote: "can enemies in GG pathfind on entities? "
Yes, GG uses waypoints. Path finding can be scripted using LUA. it's quite basic at the moment.
Quote: "I would like to use large entities as flat surfaces instead of the terrain editor. is this doable at this point?"
If you are meaning that you want to add in your own terrain mesh. Yes this is possible, there is a thread somewhere on the forums where a forum member had made a cave mesh, but I not sure where top of my head, try searching on cave or mesh maybe?.
Quote: "has anyone had any experience importing weaponry? I'm poor and dont have money to buy bsp's guns right now so I reanimated some FPSB guns on counterstrike hands to do for my game and want to know if its similar to FPSC."
I'm in the middle of working on rigged/animated arm HUDs for first person at the moment and planning a tutorial at a later date. If you are meaning is FPSC weapon system same as GG, I'm not sure, maybe basic stuff is similar to FPSC [edit] actually opened a HUD.X file from FPSCX9 and they are similar.
Quote: "do guns need a firespot bone? and do they need lots of animations or can I get away with just the basic animations necessary for a gun in FPSC classic and not include all the sprinting/aiming lines in the fpe"
Yes. The amount of animations will vary depending on what you want to achieve.
Quote: "is there anything available to convert old FPSC classic .fpe files to GG ones or a .fpe maker for gameguru of some type?"
Not a complete converter as such as the engines are very different, there is a tool on the forums that does a basic conversion. I can't remember where it is, please do a search on "FPE" or "convert".
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