This is a great way of speeding up the level design pipeline. In my experience I found that grayboxing the level inside of 3Ds max to be vastly superior in terms of time and speed over constructing the graybox inside of UDK. Making a graybox inside of UDK solely with the Builder Brush (BSP) is very time consuming and it can be difficult to get the BSP to do exactly what you want it to do.
The problem with grayboxing inside of 3Ds Max is getting the graybox into the engine. This MaxScript solves that issue. I have just started using it and I felt the need to share it with my fellow designers.
In 3Ds Max go to the top tool bar and find where it says "MaxScript"
Once you select it UDK will ask you if you wan to merge faces or import it as a solid piece. Import it without merging. Once that is done you wont be able to see your import.
Hit Crtl + A and you should see your wire frame teapot appear as a BSP.
The only way to import this level with the MCDCX collision would be to piece it out and import each piece with it's own collision. The faster way to do with would be to use this script.
- Danny Q