Abstract: A course coordinate system processor has a general automobile control unit, a movement decision unit, and a position decision unit. The general automobile control unit controls the running of a plurality of general automobiles on a straight road in a course coordinate system. The movement decision unit determines whether or not another automobile exists in front of an automobile which is under consideration for a movement decision. The position decision unit determines the positional relation between a player's automobile and general automobiles in the course coordinate system, and also determines general automobiles that are positioned in a predetermined visible range of the player's automobile. Positional coordinate data of the player's automobile have been transformed from a world coordinate system into the course coordinate system by a course coordinate system transformation unit.

Abstract: A multidirectional switch is provided with a lever, a lever support assembly for supporting the lever in such a way that it can be slanted in directions of first and second axes intersecting each other, an automatic lever reset mechanism for causing the lever to automatically return from its slant position to neutral position, a retainer for retaining the lever in a position slanted in the second axis direction against restoration force exerted by the automatic lever reset mechanism, and a sensor of which sensing elements are arranged at positions corresponding to individual slant positions of the lever. The multidirectional switch provides different types of information depending on directions in which the lever is slanted.

Abstract: A course coordinate system processor has a general automobile control unit, a movement decision unit, and a position decision unit. The general automobile control unit controls the running of a plurality of general automobiles on a straight road in a course coordinate system. The movement decision unit determines whether or not another automobile exists in front of an automobile which is under consideration for a movement decision. The position decision unit determines the positional relation between a player's automobile and general automobiles in the course coordinate system, and also determines general automobiles that are positioned in a predetermined visible range of the player's automobile. Positional coordinate data of the player's automobile have been transformed from a world coordinate system into the course coordinate system by a course coordinate system transformation unit.