Pointed Skylight

This uses texture trnasparency and a partially transparent material 
to create the appearence of a slightly dirty window. At first glance
it is solid, like with terrain texture windows, but the observant
player will notice that they can see the sky through it.
Because it's an object, it will let moonlight through.

Extract it to your obj folder.

For realistic collisions, it's best to use two thin, invisible cubes rotated to 
line up with the two sides. 

It's not meant to be viewed from above, but you can make the materials 
double sided if you want to.

The texture was made from scratch using Vigil's stained glass window tutorial,
and the base texutres he supplied:
http://thief.washboardabs.net/tutorials/stainedglass/

R Soul