This member has provided no bio about themself...
the 2013 version had already come out, why don't you use it? by the way the steam version has errors so you have to see a tutorial called "Source Engine Modding: Setting up a Singleplayer Mod (2013)" otherwise I think it would be impossible to do something about it, but well, I think the new one doesn't have limitations anymore, even in gmod that has a similar version, we have created versions with similar ideas, with lua not with c++ but it has been done without errors
firs concept for Garry'smod?
estara chingon pasarse Half-life con este mod :D a cagarse de la risa!