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feat: made 3d... for the cub3d

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Theo Champion 2025-07-30 16:25:12 +02:00
parent 077659cd25
commit 5281fe6abd
8 changed files with 185 additions and 5 deletions
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67
src/raycast/render.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* render.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tchampio <tchampio@student.42lehavre.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/07/30 12:50:10 by tchampio #+# #+# */
/* Updated: 2025/07/30 16:22:42 by tchampio ### ########.fr */
/* */
/* ************************************************************************** */
#include "../cub3d_data.h"
#include "../consts.h"
#include "ray.h"
int get_cardinal(t_ray *ray)
{
if (ray->side == 0)
{
if (ray->dir_x < 0)
return (2);
else
return (3);
}
else
{
if (ray->dir_y > 0)
return (1);
else
return (0);
}
}
/*
* Dir values are:
* 0: North
* 1: South
* 2: West
* 3: East
*/
void render_walls(t_cub3d_data *data, t_ray *ray, int x)
{
int dir;
int tex_x;
unsigned int color;
double step;
double pos;
static int texture_size = 64; // to be changed in favor of a const
dir = get_cardinal(ray);
tex_x = (int)(ray->wall_x * texture_size);
if ((ray->side == 0 && ray->dir_x < 0) || (ray->side == 1 && ray->dir_y > 0))
tex_x = texture_size - tex_x - 1;
step = 1.0 * texture_size / ray->wall_height;
pos = (ray->draw_start - HEIGHT / 2 + ray->wall_height / 2) * step;
while (ray->draw_start < ray->draw_end)
{
pos += step;
color = 0x0000ff;
(void)dir; // cc complains otherwise
(void)pos; // cc complains otherwise
data->screen_matrix[ray->draw_start][x] = color;
ray->draw_start++;
}
}