Information processing system, information processing method, and supplying medium

摘要

An information processing system for processing three-dimensional information on an object existing actually in a three-dimensional space for detecting a collision between a space having an optional configuration and size in the three-dimensional space and the object. In the information processing system, a virtual space setting section sets a virtual space in the three-dimensional space, and a three-dimensional information creating section creates three-dimensional information on the object such as an intruder. A decision is made, on the basis of the three-dimensional information on the object, on whether or not the collision between the intruder and the virtual space occurs.