Funnily enough, I did exactly the same thing with quake, and my geography teacher was kind enough to give me an A4 map of the school site. I couldn't have been more than 13 at the time, but all the same I'm fairly certain that would never happen today.
There's also the issue of copyright on the interior of buildings; as the Manchester Cathedral controversy with resistance:tFoM shows, just because you *can* set your levels anywhere doesn't mean you won't get sued out of existence for using it. Which is sad, really.
"Debian's decision to include Mono in the default installation, for the sake of Tomboy which is an application written in C#, leads the community in a risky direction. It is dangerous to depend on C#, so we need to discourage its use.
.... This is not to say that implementing C# is a bad thing. ... [writing and using applications in mono] is taking a gratuitous risk.
Happiness is twin floppies.