From d2f53e38cbf711e35035a4576070a5211a1d055d Mon Sep 17 00:00:00 2001
From: salaaad2 <arthurdurant263@gmail.com>
Date: Sat, 22 Feb 2020 20:56:50 +0100
Subject: shpritz
---
src/ft_draw_sprite.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
src/ft_raycasting.c | 20 ++++++++++++++++++--
2 files changed, 62 insertions(+), 2 deletions(-)
create mode 100644 src/ft_draw_sprite.c
(limited to 'src')
diff --git a/src/ft_draw_sprite.c b/src/ft_draw_sprite.c
new file mode 100644
index 0000000..38c1fd9
--- /dev/null
+++ b/src/ft_draw_sprite.c
@@ -0,0 +1,44 @@
+#include <libft.h>
+#include <cub3d.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <math.h>
+
+void
+ft_draw_verline_sprite(t_cub *cl, int x, int y, int tex_y)
+{
+ cl->img.ptr[x * 4 + (cl->img.sizeline * y)] =
+ (char)cl->tlist[cl->w_side].ptr[cl->tlist[cl->w_side].tex_x * 4 + 4 *
+ cl->tlist[cl->w_side].img_h * tex_y];
+ cl->img.ptr[x * 4 + (cl->img.sizeline * y) + 1] =
+ (char)cl->tlist[cl->w_side].ptr[cl->tlist[cl->w_side].tex_x * 4 + 4 *
+ cl->tlist[cl->w_side].img_h * tex_y + 1];
+ cl->img.ptr[x * 4 + (cl->img.sizeline * y) + 2] =
+ (char)cl->tlist[cl->w_side].ptr[cl->tlist[cl->w_side].tex_x * 4 + 4 *
+ cl->tlist[cl->w_side].img_h * tex_y + 2];
+ cl->img.ptr[x * 4 + cl->wlist->x_size * y + 3] = (char)0;
+}
+
+void
+ft_draw_sprite(t_cub *cl, int x)
+{
+ int ver_it;/*stripe*/
+ int hor_it;/*y*/
+ int tex_x;
+ int tex_y;
+ int d;
+
+ ver_it = cl->sp_list.s_start_x;
+ while (ver_it < cl->sp_list.s_end_x)
+ {
+ tex_x = (int)(256 * (ver_it - (-cl->sp_list.s_w / 2 + cl->sp_list.s_screen_x)) * cl->tlist[4].img_w / cl->sp_list.s_w) / 256;
+ hor_it = cl->sp_list.s_start_y;
+ while (hor_it < cl->sp_list.s_end_y)
+ {
+ d = hor_it * 256 - cl->wlist->y_size * 128 + cl->sp_list.s_h * 128;
+ tex_y = ((d * cl->tlist[4].img_h) / cl->sp_list.s_h) / 256;
+ ft_draw_verline_sprite(cl, x, hor_it, tex_y);
+ }
+ ver_it++;
+ }
+}
diff --git a/src/ft_raycasting.c b/src/ft_raycasting.c
index 589d2da..b42e0b7 100644
--- a/src/ft_raycasting.c
+++ b/src/ft_raycasting.c
@@ -13,6 +13,7 @@
#include <libft.h>
#include <cub3d.h>
#include <stdint.h>
+#include <stdlib.h>
#include <math.h>
void
@@ -23,7 +24,21 @@ void
cl->sp_list.inv_c_m = 1.0 / (cl->plist->plane_x * cl->plist->dir_x - cl->plist->dir_y * cl->plist->plane_y);
cl->sp_list.sprite_transform_x = cl->sp_list.inv_c_m * (cl->plist->dir_y * cl->sp_list.s_x - cl->plist->dir_x * cl->sp_list.s_y);
cl->sp_list.sprite_transform_y = cl->sp_list.inv_c_m * (cl->plist->plane_y * cl->sp_list.s_x - cl->plist->plane_x * cl->sp_list.s_y);
-
+ cl->sp_list.s_screen_x = (int)((cl->wlist->y_size / 2) * (1 + cl->sp_list.sprite_transform_x / cl->sp_list.sprite_transform_y));
+ cl->sp_list.s_h = abs((int)(cl->wlist->y_size * cl->sp_list.sprite_transform_y)); /*sprite height*/
+ cl->sp_list.s_start_y = -cl->sp_list.s_h / 2 + cl->wlist->y_size / 2;
+ if (cl->sp_list.s_start_y < 0)
+ cl->sp_list.s_start_y = 0;
+ cl->sp_list.s_end_y = cl->sp_list.s_h / 2 + cl->wlist->y_size / 2;
+ if (cl->sp_list.s_end_y > (int)cl->wlist->y_size)
+ cl->sp_list.s_end_y = cl->wlist->y_size - 1;;
+ cl->sp_list.s_w = abs((int)(cl->wlist->x_size * cl->sp_list.sprite_transform_y)); /*sprite width*/
+ cl->sp_list.s_start_x = -cl->sp_list.s_w / 2 + cl->sp_list.s_screen_x;
+ if (cl->sp_list.s_start_x < 0)
+ cl->sp_list.s_start_y = 0;
+ cl->sp_list.s_end_x = cl->sp_list.s_w / 2 + cl->wlist->x_size;
+ if (cl->sp_list.s_end_x < (int)cl->wlist->x_size)
+ cl->sp_list.s_end_x = cl->wlist->x_size - 1;
}
static void
@@ -35,7 +50,7 @@ static void
else
clist->rlist.wall_hit_x = (clist->plist->pos_y) +
clist->rlist.wall_dist * clist->rlist.x_ray_dir;
- clist->rlist.wall_hit_x -= floor(clist->rlist.wall_hit_x);
+ clist->rlist.wall_hit_x -= floor(clist->rlist.wall_hit_x);
clist->tlist[clist->w_side].tex_x = (int)(clist->rlist.wall_hit_x *
(double)clist->tlist[clist->w_side].img_w);
if (clist->rlist.side == 0 && clist->rlist.x_ray_dir > 0)
@@ -95,6 +110,7 @@ void
ft_choose_tex(cl);
ft_calc_tex(cl);
ft_calc_sprite(cl);
+ ft_draw_sprite(cl , i);
ft_draw_verline(cl, i, cl->rlist.wall_t, cl->rlist.wall_b);
i++;
}
--
cgit v1.2.3