i know this guy, its from my country(Brazil) he is not even a programmer, he just copy & paste parts of SA:MP gamemodes and pass it to C#, i have the entire gamemode here with client-side, mods, etc, i'm uploading the entire thing and i will post here, but i 'll advice: this gm is a entire big pile of shit, dont use it, even for study, you dont wanna learn correctly with this gm.
Download Link: http://www.dropbox.com/s/wi64ojksvrs8n35/GT-RP.rar?dl=1
This version of the gm is modified by me, some bug fixes and server name has been modified too, but only this, i dont create any type of script, just fix some bugs.
its a shame for me and my country to have this type of ppl around.