This is nothing more than a box map (modified mp_test) with the CoD style of portal technology I created built in to the map gsc (no gametype needed).
So, if you're interested just bung the IWD in the main preferably removing all mods beforehand.
Load up CoD2 and "/devmap mp_test_portal"
Now once loaded and in game this is how the portal tech works...
First, to set your start portal, you use your USE button and point it where you want the portal. (At the moment, the start portal can be put anywhere, as long as it is touching a solid object... Floor, walls, platforms, and the sky... This will be changed a little in a revision).
Second to set your finish portal, you use your GRENADES. Throw a grenade, where it explodes is your portal will open. There are a couple of rules to this portal... Firstly, to stop "telefraging" (teleporting into a solid object) the nade must be at least 16 units from a wall. Also, there must be a 72 unit clearance above the nade and finally, the nade must explode on the ground. The portal will not open otherwise.
Portals will also not be able to open on a slanted surface (due to a flaw in the way the script checks for telefrags).
Have fun with it, and ofcourse as always the code in the GSC is free to use at your pleasure, the map file is provided also to simply show how the "teleporters" work (simple script_brushmodels, triggers are scripted). Maybe one day I will create something a bit more using this, but atm this is simply a bit of fun to keep me occupied while bored

Any Q's or C's?
[-Download-]