Abstract: The object is to smoothly move the position of the viewing point of the virtual camera with existence of an object between the position of the viewing point of the virtual camera and the position of the subject avoided. A camera peripheral area that has a viewing point as its center and has the radius of R, a subject peripheral area that has a subject toward which a viewing axis of the virtual camera is aligned as its center and has the radius of r, and a camera-to-subject area formed by a circular truncated cone area therebetween are set as a camera collision in which an obstacle cannot exist. When an obstacle exists in the camera collision, the position of the viewing point is adjusted. The radius R and the radius r are adjusted each time the reference distance D is changed.

Abstract: In an online game server, an updater updates at least one of a game program and game data for server stored in a storage section in accordance with an update operation for data to be utilized when to execute a sub game other than a main game in an online game. Updated portion data are a shared library format that can be utilized in the client terminal. A transmitter transmits updated data including at least the updated portion data to the client terminal. In a client terminal, a rewriter rewrites at least one of a game program and game data for client stored in a memory. In the case where there is a specification operational input by a player, a controller controls progress of the online game using the game program or the game data for client without carrying out communication with the online game server.

Abstract: In an online game server, an updater updates at least one of a game program and game data for server stored in a storage section in accordance with an update operation for data to be utilized when to execute a sub game other than a main game in an online game. Updated portion data are a shared library format that can be utilized in the client terminal. A transmitter transmits updated data including at least the updated portion data to the client terminal. In a client terminal, a rewriter rewrites at least one of a game program and game data for client stored in a memory. In the case where there is a specification operational input by a player, a controller controls progress of the online game using the game program or the game data for client without carrying out communication with the online game server.

Abstract: The object is to smoothly move the position of the viewing point of the virtual camera with existence of an object between the position of the viewing point of the virtual camera and the position of the subject avoided. A camera peripheral area that has a viewing point as its center and has the radius of R, a subject peripheral area that has a subject toward which a viewing axis of the virtual camera is aligned as its center and has the radius of r, and a camera-to-subject area formed by a circular truncated cone area therebetween are set as a camera collision in which an obstacle cannot exist. When an obstacle exists in the camera collision, the position of the viewing point is adjusted. The radius R and the radius r are adjusted each time the reference distance D is changed.