how to make a screen, television etc. that displays whats going on in the map (i do not mean the limbo thingie)… i remmember there was something like that in some goldrush conversion…
ingame surveillance
You can use camera’s and “mirror” textures for that (although I can’t remember exactly how). Note though that (as far as I know) it will not really look like a camera, it will be like you are viewing everything through a window. When you move to the sides, you can actually see more of whats displayed in the screen as if it was just a hole through which you are looking instead of a flat screen.
Only a german tutorial:
http://www.haradirki.de/tutor/indextut41.htm
But there are example maps.
You need:
http://www.haradirki.de/tutor/files/camera.zip
and:
http://www.haradirki.de/tutor-files/rtcwmaps.zip
Example map with camera must be “tutor65.map”.
dont know anything about german exept the voice chat in ET… so i quess ill try do do as in the pics in that tutorial…
so if its like a hole in a wall… could i make a sphere and then see 360 degrees?
is there some variable that u could shoot it and then bullets teleport to that location?
maybe you could combine a shooter to a trigger thats activated by shooting, but teleport bullets, nope.
also for the surveillance Idea, maybe you could just design the tv in a way that it is just hard to look at it from different angles
I never really “released” it but it’s free for everyone 
i made some cameras based on the tutorial posted above.
here is the map:
http://www.file-upload.net/download-1436082/icerace.pk3.html
(this is no finished version at all :P)