/* ************************************************************************** */ /* */ /* ::: :::::::: */ /* ft_floor_cast_inits.c :+: :+: :+: */ /* +:+ +:+ +:+ */ /* By: rbousset +#+ +:+ +#+ */ /* +#+#+#+#+#+ +#+ */ /* Created: 2020/02/14 17:22:57 by rbousset #+# #+# */ /* Updated: 2020/02/14 17:23:42 by rbousset ### ########lyon.fr */ /* */ /* ************************************************************************** */ #include #include void ft_set_fc_tex_xy(uint8_t tid, uint16_t x, uint16_t y, t_cub *cl) { const int32_t x_cell = (int32_t)(cl->rlist.x_floor); const int32_t y_cell = (int32_t)(cl->rlist.y_floor); cl->tlist[tid].tex_x = (int32_t)(cl->tlist[tid].img_h * (cl->rlist.y_floor - y_cell)); cl->tlist[tid].tex_y = (int32_t)(cl->tlist[tid].img_w * (cl->rlist.x_floor - x_cell)); cl->rlist.fc_tex_x_tab[tid - 6][y][x] = (cl->tlist[tid].tex_x >= 0) ? (cl->tlist[tid].tex_x) : (-cl->tlist[tid].tex_x); cl->rlist.fc_tex_y_tab[tid - 6][y][x] = (cl->tlist[tid].tex_y >= 0) ? (cl->tlist[tid].tex_y) : (-cl->tlist[tid].tex_y); } void ft_floor_cast_inits(uint16_t y, t_ray *rl, t_cub *cl) { rl->x_f_ray_dir = cl->plist.dir_y + cl->plist.plane_x; rl->y_f_ray_dir = cl->plist.dir_x - cl->plist.plane_y; rl->x_f_ray_dir_bis = cl->plist.dir_y - cl->plist.plane_x; rl->y_f_ray_dir_bis = cl->plist.dir_x + cl->plist.plane_y; rl->p = y - cl->wlist.y_size / 2; cl->plist.pos_z = 0.5 * cl->wlist.y_size; rl->row_dist = cl->plist.pos_z / rl->p; cl->mlist.x_floor_step = rl->row_dist * (rl->x_f_ray_dir_bis - rl->x_f_ray_dir) / cl->wlist.x_size; cl->mlist.y_floor_step = rl->row_dist * (rl->y_f_ray_dir_bis - rl->y_f_ray_dir) / cl->wlist.x_size; rl->x_floor = -cl->plist.pos_y + rl->row_dist * rl->x_f_ray_dir; rl->y_floor = cl->plist.pos_x + rl->row_dist * rl->y_f_ray_dir; } void ft_floor_loop(uint16_t y, t_cub *cl) { uint16_t x; x = 0; ft_floor_cast_inits(y, &cl->rlist, cl); while (x < cl->wlist.x_size) { if (cl->rlist.wall_b_tab[x] <= y) { if (cl->mlist.isftex) ft_set_fc_tex_xy(6, x, y, cl); if (cl->mlist.isctex) ft_set_fc_tex_xy(7, x, cl->wlist.y_size - y - 1, cl); } cl->rlist.x_floor += cl->mlist.x_floor_step; cl->rlist.y_floor += cl->mlist.y_floor_step; x++; } cl->rlist.row_dist_tab[y] = cl->rlist.row_dist; cl->rlist.row_dist_tab[cl->wlist.y_size - y] = cl->rlist.row_dist; }