area awareness system
for ArtificialIntelligence it is easily necessary to have information of the .. environment / place / level / area / world / something, and in Quake3 there is a nice method for that ... based on geometrical / volumetric(?) analysis of the area, convex sections etc
long ago i looked at NaivePhysics? perhaps related to this, and it is an interesting concept .. kind of phenomenological approach to space, like recognizing gaps in between as things etc ..