blob: 743dc36b9d853c8828e095d6068dfda6384212be (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* 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 <stdio.h>
#include <stdlib.h>
#include <math.h>
static void
ft_calc_tex(t_cub *clist)
{
if (clist->rlist.side == 0)
clist->rlist.wall_hit_x = (clist->plist.pos_x) +
clist->rlist.wall_dist * clist->rlist.y_ray_dir;
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->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)
clist->tlist[clist->w_side].tex_x = clist->tlist[clist->w_side].img_w
- clist->tlist[clist->w_side].tex_x - 1;
else if (clist->rlist.side == 1 && clist->rlist.y_ray_dir < 0)
clist->tlist[clist->w_side].tex_x = clist->tlist[clist->w_side].img_w
- clist->tlist[clist->w_side].tex_x - 1;
}
static 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;
}
}
static void
ft_castray_norme(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;
}
void
ft_castray(t_cub *cl)
{
uint16_t i;
t_win *wl;
wl = &cl->wlist;
if (!(cl->rlist.wall_dist_tab =
(float*)malloc(sizeof(float) * cl->wlist.x_size)))
return ;
if (!(cl->rlist.wall_bz =
(int16_t*)malloc(cl->wlist.x_size * sizeof(int16_t))))
return ;
i = 0;
while (i < wl->x_size)
{
ft_castray_norme(i, wl, cl);
ft_choose_tex(cl);
ft_calc_tex(cl);
ft_draw_verline(cl, i, cl->rlist.wall_t, cl->rlist.wall_b);
cl->rlist.wall_bz[i] = cl->rlist.wall_b;
cl->rlist.wall_dist_tab[i] = cl->rlist.wall_dist;
i++;
}
ft_floor_cast(cl);
ft_calc_sprite(cl);
ft_calc_trap(cl);
ft_memdel((void**)&cl->rlist.wall_dist_tab);
ft_memdel((void**)&cl->rlist.wall_bz);
}
|
