GAME DEVICE AND COMPUTER PROGRAM USED THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a game device having a novel user interface relating to the operation of objects using an operation position detection device adapted to so-called multi-touch operations.SOLUTION: While an operation to fire an object 110As which is the subject of operation is carried out, a determination is made as to whether or not a second operation position Pm that differs from the first operation position corresponding to the firing operation is detected by the operation position detection device. When a second operation position is detected, a replicated object 110Aa of the object which is the subject of operation is generated extending from the object which is the subject of operation toward the second operation position so as to track any changes in the second operation position. When the firing operation is completed while the replicated object 110Aa is shown, in addition to the object 110As which is the subject of operation, the replicated object 110Aa is moved along a different trajectory to the trajectory of the object 110As which is the subject of operation.