/* ************************************************************************** */ /* */ /* ::: :::::::: */ /* ft_raycasting.c :+: :+: :+: */ /* +:+ +:+ +:+ */ /* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */ /* +#+#+#+#+#+ +#+ */ /* Created: 2020/02/14 17:22:57 by rbousset #+# #+# */ /* Updated: 2020/02/14 17:23:42 by rbousset ### ########lyon.fr */ /* */ /* ************************************************************************** */ #include <cub3d.h> #include <stdint.h> static void ft_initray(uint16_t y, t_ray *rl, t_player *pl, t_cub *cl) { int16_t p; rl->x_ray_dir_f = pl->dir_x - pl->plane_x; rl->y_ray_dir_f = pl->dir_y - pl->plane_y; rl->x_ray_dir_f_bis = pl->dir_x + pl->plane_x; rl->y_ray_dir_f_bis = pl->dir_y + pl->plane_y; p = y - cl->wlist.y_size / 2; rl->row_dist = pl->pos_z / p; cl->mlist.x_floor_step = rl->row_dist * (rl->x_ray_dir_f_bis - rl->x_ray_dir_f) / cl->wlist.x_size; cl->mlist.y_floor_step = rl->row_dist * (rl->y_ray_dir_f_bis - rl->y_ray_dir_f) / cl->wlist.x_size; rl->floor_x = pl->pos_x + rl->row_dist * rl->x_ray_dir_f; rl->floor_y = pl->pos_y + rl->row_dist * rl->y_ray_dir_f; } void ft_floor_cast(uint16_t y, t_cub *cl) { cl->plist.pos_z = 0.5 * cl->wlist.y_size; ft_initray(y, &cl->rlist, &cl->plist, cl); }