Patent ID: 6961055

Claim:
A method of constructing a three-dimensional world for a computer game using a set of predetermined three-dimensional tiles and a map specifying relative positions for the tiles, each tile comprising tile data including tile internal visual geometry data for defining visual geometry of the 3D world and invisible game control data; map data comprising tile identification data and tile position data identifying tiles from the act and their positions; world data comprising world visual geometry data and world game control data for the computer game, in a three-dimensional world space; the method comprising: reading the map data; transforming the internal visual geometry data into said world space, using the map data joining said transformed internal visual geometry of said identified tiles to generate said world visual geometry data defining substantially contiguous internal 3D surface enclosing said 3D world; transforming the invisible game control data into the world space, using the map data; and combining said transformed invisible game control data of said identified tiles to generate said world game control data.