| 摘要 |
Provided is a game machine for realizing, by relatively simple processing, an execution of predetermined game processing based on how a region of interest in a virtual three-dimensional space is displayed on a game screen (such as the size, or the position within the game screen). The present invention relates to a game machine which generates a game screen showing a scene of the three-dimensional space viewed from a given viewpoint by transforming coordinates of an object placed in the virtual three-dimensional space into a screen coordinate system by using a predetermined coordinate transformation calculation. A reference point storage unit (56) stores coordinate values of one or more reference points set in relation to the region of interest within the virtual three-dimensional space. A coordinate value acquiring unit (58) transforms the coordinate values of the one or more reference points into the screen coordinate system by using the predetermined coordinate transformation calculation, and acquires the coordinate values in the screen coordinate system of the one or more reference points. A game processing executing unit (62) executes the predetermined game processing based on the coordinate values acquired by the coordinate value acquiring unit (58). |
