| 摘要 |
A designated position of a topographic object provided in a virtual game space is detected from a position on a screen designated by an operation device. A shape of topography at the detected designated position of the topographic object and in a vicinity thereof, into a shape whose height is gradually changed, depending on a distance from the designated position. When the movable object contacts the topographic object, a physical calculation is performed with respect to a contact surface based on the changed shape, and based on a result of the calculation, movement of the movable object is controlled.
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