Norme

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;
+}