63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
#include "cube3d.h"
|
|
|
|
static void draw_floor_ceiling(t_game *game, t_rcast *rcast, t_txt *txt)
|
|
{
|
|
t_vec plan;
|
|
|
|
plan.start.x = rcast->ray_nb;
|
|
plan.end.x = rcast->ray_nb;
|
|
if (rcast->wall.vec.start.y > 0)
|
|
{
|
|
plan.start.y = rcast->screen_height;
|
|
plan.end.y = rcast->wall.vec.start.y;
|
|
draw_line(&game->img, &plan, txt->rgb_floor);
|
|
}
|
|
if (rcast->wall.vec.start.y < rcast->screen_height)
|
|
{
|
|
plan.start.y = rcast->wall.vec.end.y;
|
|
plan.end.y = 0;
|
|
draw_line(&game->img, &plan, txt->rgb_ceiling);
|
|
}
|
|
}
|
|
|
|
static int get_texture(t_img *img, int imgx, int j, int height)
|
|
{
|
|
char *color;
|
|
int y;
|
|
int position;
|
|
|
|
y = (j * img->height) / height;
|
|
position = y * img->szl + imgx * (img->bpp / 8);
|
|
color = img->data + position;
|
|
return (*(int*)color);
|
|
}
|
|
|
|
static void draw_txt_column(t_img *img, t_rcast *rcast, t_wall *wall, t_img *txt_img)
|
|
{
|
|
int color;
|
|
int img_x;
|
|
int j;
|
|
|
|
img_x = (wall->posx * txt_img->width) / rcast->cell;
|
|
j = 0;
|
|
while (j < wall->height)
|
|
{
|
|
color = get_texture(txt_img, img_x, j, wall->height);
|
|
draw_pixel(img, wall->vec.start.x, wall->vec.end.y + j, color);
|
|
j++;
|
|
}
|
|
}
|
|
|
|
void draw_column(t_game *game, t_rcast *rcast, t_wall *wall, t_txt *txt)
|
|
{
|
|
draw_floor_ceiling(game, rcast, txt);
|
|
if (!rcast->is_x && rcast->slope_y > 0)
|
|
draw_txt_column(&game->img, rcast, wall, &txt->img_n);
|
|
if (!rcast->is_x && rcast->slope_y < 0)
|
|
draw_txt_column(&game->img, rcast, wall, &txt->img_s);
|
|
if (rcast->is_x && rcast->slope_x > 0)
|
|
draw_txt_column(&game->img, rcast, wall, &txt->img_e);
|
|
if (rcast->is_x && rcast->slope_x < 0)
|
|
draw_txt_column(&game->img, rcast, wall, &txt->img_w);
|
|
}
|