diff options
Diffstat (limited to 'src/ft_floor_cast_inits.c')
| -rw-r--r-- | src/ft_floor_cast_inits.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/ft_floor_cast_inits.c b/src/ft_floor_cast_inits.c new file mode 100644 index 0000000..591eb24 --- /dev/null +++ b/src/ft_floor_cast_inits.c @@ -0,0 +1,32 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* ft_floor_cast_inits.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> + +void + ft_floor_cast_inits(uint16_t y, t_ray *rl, t_cub *cl) +{ + rl->x_f_ray_dir = cl->plist.dir_x - cl->plist.plane_x; + rl->y_f_ray_dir = cl->plist.dir_y - cl->plist.plane_y; + rl->x_f_ray_dir_bis = cl->plist.dir_x + cl->plist.plane_x; + rl->y_f_ray_dir_bis = cl->plist.dir_y + 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; +} |