Image generation apparatus for causing movement of moving body based on flow data for a fluid set on a course, and information storage medium

摘要

An image generation apparatus and information storage medium wherein the flow of a fluid over a course influences the behavior of a moving body. The moving body is moved along the course, based on manipulation data, flow data PS_n (position of a point S_n), flow velocity VS_n, and flow direction S_n, this data being set for the course in an object space. A flow-velocity vector VECF_n at the position of the moving body is obtained by interpolation based on flow data that is set for sample points S_n and position data for the moving body, and the moving body is moved in accordance with this VECF_n. The flow velocity VS_n is assumed to be the maximum value through the cross-section of the course and the interpolation is based on this VS_n and the flow velocity at either the left edge L_n or the right edge R_n of the course. The flow velocities at the left edge L_n and right edge R_n of the course are made to be greater than zero. The flow data is set for the sample points S_n in a one-to-one correspondence with course data PC_n, C_n, WL_n, and WR_n.