From b6736a2dc2cead76bd6a619b52d2d18ac3d4029d Mon Sep 17 00:00:00 2001
From: JozanLeClerc <bousset.rudy@gmail.com>
Date: Tue, 24 Mar 2020 20:06:05 +0100
Subject: Get normed
---
src/ft_castray_loop.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 87 insertions(+)
create mode 100644 src/ft_castray_loop.c
(limited to 'src/ft_castray_loop.c')
diff --git a/src/ft_castray_loop.c b/src/ft_castray_loop.c
new file mode 100644
index 0000000..28277a7
--- /dev/null
+++ b/src/ft_castray_loop.c
@@ -0,0 +1,87 @@
+/* ************************************************************************** */
+/* */
+/* ::: :::::::: */
+/* 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 <libft.h>
+#include <cub3d.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <math.h>
+
+void
+ ft_calc_tex(t_cub *cl)
+{
+ if (cl->rlist.side == 0)
+ cl->rlist.wall_hit_x = (cl->plist.pos_x) +
+ cl->rlist.wall_dist * cl->rlist.y_ray_dir;
+ else
+ cl->rlist.wall_hit_x = (cl->plist.pos_y) +
+ cl->rlist.wall_dist * cl->rlist.x_ray_dir;
+ cl->rlist.wall_hit_x -= floor(cl->rlist.wall_hit_x);
+ cl->tlist[cl->w_side].tex_x = (int)(cl->rlist.wall_hit_x *
+ (double)cl->tlist[cl->w_side].img_w);
+ if (cl->rlist.side == 0 && cl->rlist.x_ray_dir > 0)
+ cl->tlist[cl->w_side].tex_x = cl->tlist[cl->w_side].img_w
+ - cl->tlist[cl->w_side].tex_x - 1;
+ else if (cl->rlist.side == 1 && cl->rlist.y_ray_dir < 0)
+ cl->tlist[cl->w_side].tex_x = cl->tlist[cl->w_side].img_w
+ - cl->tlist[cl->w_side].tex_x - 1;
+}
+
+void
+ ft_initray(uint16_t i, t_cub *cl)
+{
+ t_win *wl;
+ t_player *pl;
+
+ wl = &cl->wlist;
+ pl = &cl->plist;
+ pl->cam_x = 2 * i / (float)(wl->x_size) - 1;
+ cl->rlist.x_ray_pos = pl->pos_y;
+ cl->rlist.y_ray_pos = pl->pos_x;
+ cl->rlist.x_ray_dir = pl->dir_x + pl->plane_x *
+ pl->cam_x;
+ cl->rlist.y_ray_dir = pl->dir_y + pl->plane_y *
+ pl->cam_x;
+ cl->rlist.sqx = (int16_t)cl->rlist.x_ray_pos;
+ cl->rlist.sqy = (int16_t)cl->rlist.y_ray_pos;
+ ft_detect(cl);
+ if (cl->rlist.side == 0)
+ {
+ cl->rlist.wall_dist = (cl->rlist.sqx - cl->rlist.x_ray_pos +
+ (1 - cl->mlist.x_step) / 2) / cl->rlist.x_ray_dir;
+ }
+ else
+ {
+ cl->rlist.wall_dist = (cl->rlist.sqy - cl->rlist.y_ray_pos +
+ (1 - cl->mlist.y_step) / 2) / cl->rlist.y_ray_dir;
+ }
+}
+
+void
+ ft_castray_loop(uint16_t i, t_win *wl, t_cub *cl)
+{
+ ft_initray(i, cl);
+ cl->rlist.line_h = (int16_t)(wl->y_size / cl->rlist.wall_dist);
+ cl->rlist.wall_t = -cl->rlist.line_h / 2 + wl->y_size / 2;
+ if (cl->rlist.wall_t < 0)
+ cl->rlist.wall_t = 0;
+ cl->rlist.wall_b = cl->rlist.line_h / 2 + wl->y_size / 2;
+ if (cl->rlist.wall_b >= (int16_t)wl->y_size)
+ cl->rlist.wall_b = wl->y_size - 1;
+ ft_choose_tex(i, cl);
+ ft_calc_tex(cl);
+ cl->rlist.tex_x_tab[i] = cl->tlist[cl->w_side].tex_x;
+ cl->rlist.line_h_tab[i] = cl->rlist.line_h;
+ cl->rlist.wall_t_tab[i] = cl->rlist.wall_t;
+ cl->rlist.wall_b_tab[i] = cl->rlist.wall_b;
+ cl->rlist.wall_dist_tab[i] = cl->rlist.wall_dist;
+}
--
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