STORAGE MEDIUM HAVING INFORMATION PROCESSING PROGRAM STORED THEREON, INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING SYSTEM, AND INFORMATION PROCESSING METHOD

摘要

Data which is output from an input device capable of allowing a body of a user to get thereon and is based on a load applied on the input device is usable. Data is acquired from the input device is processed. A center-of-gravity position of a load applied on the input device is repeatedly acquired based on data output from the input device. A user direction a stepping action made on the input device is calculated using the center-of-gravity position. Predetermined processing is performed based on the user direction.