Game system and game program

A method for use with a game system for separately displaying two virtual game spaces, consisting of a three-dimensional game space and a two-dimensional game space wherein the two-dimensional game space corresponds to a predetermined plane within the three-dimensional game space, the game spaces being respectively displayed on a first display device and a second display device, comprising:

• displaying an object contained within a first game space represented by a three-dimensional coordinate system, on the first display;
• displaying an object contained within a second game space represented by a two-dimensional coordinate, system on the second display;
• and
• performing a coordinate computing process in which coordinates corresponding to a location of the object in the first game space are mathematically projected onto a plane within the first games space that corresponds to the second game space, so as to determine coordinates in the first game space that are indicative of a location where a shadow of the object would occur on the two-dimensional plane corresponding to the second game space;
• and
• displaying a related image which corresponds to the object present in the first game space and which is located at the determined coordinates in the second game space.

A video game system having at least two display devices on which a virtual three-dimensional first game space and a virtual two dimensional second game space are separately displayed respectively on first display device and a second display device, the game system comprising:

• first display control programmed logic circuitry configured to display on the first display a virtual game object, present within the first game space at a location represented by a three-dimensional coordinate;
• and
• second display control programmed logic circuitry configured to display on the second display a virtual game object present within the second game space at a location represented by a two-dimensional coordinate wherein the two-dimensional game space corresponds to a predetermined plane within the three-dimensional game space and the first display control programmed logic circuitry further includes:
• programmed logic circuitry at a location configured to create a related object image at a location within the first game space that corresponds to a current location of the object present in the second game space;
• and
• programmed logic circuitry configured to display on the first display device, from a perspective of a camera capturing the object from the plane's underside and which a light source illuminating the object from the plane's underside, a shadow of the object that is cast due to the light source upon an object located in the first game space.

A video game system having at least two display devices on which a virtual three-dimensional first game space and a virtual two dimensional second game space are separately displayed respectively on a first display device and a second display device, the game system comprising:

• first display control programmed logic circuitry configured to display on the first display a virtual game object present within the first game space at a location represented by a three-dimensional coordinate;
• and
• second display control programmed logic circuitry configured to display on the second display a virtual game object present within the second game space at a location represented by a two-dimensional coordinate, wherein the two-dimensional game space corresponds to a predetermined plane within three-dimensional game space and the first display control programmed logic circuitry further includes:
• programmed logic circuitry configured to determine a projected shadow volume, whose shape corresponds to a shape of the two-dimensional object present in the second game space, within the first game space at a location on the plane that corresponds to a current location of the two-dimensional object in the second game space;
• and
• programmed logic circuitry configured to display on the first display device, from a perspective of camera positioned to capture the shadow volume from a side of the plane, a shadow which is formed on the object in the first game space due to the projection of the shadow volume.

A method for a game system in which two game spaces, which are each defined as a predetermined portion of a virtual space, are separately displayed respectively on a first display and a second display, comprising:

• displaying a first objectcontained in a first game space represented by a three-dimensional coordinate system on the first display;
• displaying a second object contained in a second game space represented by a two-dimensional coordinate system on the second display;
• provisionally placing the second object present in the second game space into the first game space at a location on a plane within the first game space that corresponds to a relative position of the second game space with respect to the first game space, the location on the plane corresponding to a current location of the second object in the second game space;
• and
• displaying on the first display, in accordance with a camera capturing the provisionally placed object from the plane's underside and in accordance with a light illuminating the provisionally placed object from the plane's underside, a shadow of the provisionally placed object which is cast on another object in the first game space.

A method for a game system in which two game spaces, which are each defined as a predetermined portion of a virtual space, are separately displayed respectively on a first display and a second display, the game system comprising:

• displaying a first object contained in a first game space represented by a three-dimensional coordinate system on the first display;
• displaying a second object contained in a second game space represented by a two-dimensional coordinate system on the second display;
• provisionally placing a shadow volume prepared in advance whose shape corresponds to a shape of the second object present in the second game space into the first game space at a location on a plane within the first game space that corresponds to a relative position of the second game space with respect to the first game space, the location on the plane corresponding to a current location of the second object in the second game space;
• and
• displaying on the first display, in accordance with a camera capturing the shadow volume from the plane's underside and in accordance with the shadow volume, a shadow which is formed on the object in the first game space due to the shadow volume.