Patent US 8,012,005

A traveling time calculation program causes a computer to function as the following: position determination mechanism which determines a position of a movable object using a velocity vector with every update of a game screen, virtual position setting mechanism which sets a virtual position between positions immediately before and after the movable object passes through a second position, and shifts the virtual position using an infinitesimal unit vector obtained by dividing a velocity vector at the position immediately before the movable object passes through the second position into predetermined numbers, and traveling time calculation mechanism which calculates a traveling time from the first position to a position immediately before or after the virtual position crosses the second position.