Collision Map Generator.
This script generates maps based on the collision of an object with another object...i've included a pdf help file with it.
Imagin a dirty character hand touches the wall it will leave some dirt on it...or may be a character walking on sand his feet will leave marks on the ground...you can use it in many things.
Simply run the script from maxscript menu.
Help File Included.
You can watch this demonstration video