| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a game apparatus or the like capable of performing realistic representation of particles of a particle system with simple calculation. <P>SOLUTION: A force field control part 224 controls the shape and size of a force field region giving changes to the motion and color of sparks, the magnitude of force working in the force field region, or the like. A spark generating part 220 determines the timing to generate sparks and determines the generation source, emission rate, initial conditions, color, brightness, and the like of the sparks when generating sparks. A spark control part 222 sequentially calculates the positions of generated sparks. When the sparks exist in the force field region, the spark control part 222 moves the sparks according to a physical law defined in the force field region to change the color and brightness. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
