42_cub3d/map_utils2.c
2024-10-15 18:23:16 +02:00

105 lines
2.7 KiB
C

/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* map_utils2.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: mcolonna <mcolonna@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/10/04 15:12:08 by mcolonna #+# #+# */
/* Updated: 2024/10/15 16:27:41 by mcolonna ### ########.fr */
/* */
/* ************************************************************************** */
#include "map_utils.h"
#include "map_mapping.h"
#include "map.h"
#include <stdlib.h>
/// @brief Read the map description to get the dimensions.
/// The map must be at least 1x1.
///
/// @param map The .width and .height members will be set.
/// @param stream Stream to use.
/// @return true if success, false if error.
static bool get_map_dimensions(t_map *map, t_stream *stream)
{
unsigned int x;
unsigned int y;
map->width = 0;
map->height = 0;
y = 0;
while (stream->str[stream->i])
{
x = 0;
while (stream->str[stream->i] && stream->str[stream->i] != '\n')
{
stream->i++;
x++;
}
if (x > map->width)
map->width = x;
if (stream->str[stream->i] == '\n')
stream->i++;
y++;
}
map->height = y;
return (map->width > 0 && map->height > 0);
}
bool get_case(t_map_case *dest, char name)
{
int i;
char tmp[2];
i = -1;
while (g_map_mapping[++i].name)
{
if (name == g_map_mapping[i].name)
{
*dest = g_map_mapping[i].value;
return (true);
}
}
tmp[0] = name;
tmp[1] = '\0';
write_err("Character '", tmp, "' unexpected\n", NULL);
return (false);
}
void fill_zeros(void *dest, size_t size)
{
size_t i;
i = -1;
while (++i < size)
((char *)dest)[i] = '\0';
}
bool read_map_description(t_map *map, t_stream *stream)
{
t_stream stream2;
unsigned int x;
unsigned int y;
stream2 = *stream;
if (!get_map_dimensions(map, &stream2))
return (false);
map->cases = malloc((map->width * map->height) * sizeof(t_map_case));
y = -1;
fill_zeros(map->cases, (map->width * map->height) * sizeof(t_map_case));
while (++y < map->height)
{
x = 0;
while (stream->str[stream->i] && stream->str[stream->i] != '\n')
{
if (!get_case(&map->cases[y * map->width + x],
stream->str[stream->i]))
return (false);
stream->i++;
x++;
}
stream->i++;
}
return (true);
}