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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* tilemap.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dkaiser <dkaiser@student.42heilbronn.de +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/05/10 14:47:01 by dkaiser #+# #+# */
/* Updated: 2024/05/11 16:19:50 by dkaiser ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line.h"
#include "libft.h"
#include "so_long.h"
static t_ivector get_map_size_from_file(int fd);
static int load_tiles_from_file(t_tilemap *tilemap, int fd);
static int load_tiles_from_line(t_tilemap *tilemap, int l, char *line);
static int get_line_len(char *line);
int load_map_from_file(t_tilemap *tilemap, char *filename)
{
int fd;
fd = open(filename, O_RDONLY);
if (fd < 0)
return (1);
tilemap->grid_size = get_map_size_from_file(fd);
close(fd);
if (tilemap->grid_size.x < 0 || tilemap->grid_size.y < 0)
return (1);
fd = open(filename, O_RDONLY);
if (fd < 0)
return (1);
if (load_tiles_from_file(tilemap, fd))
{
close(fd);
return (1);
}
close(fd);
return (0);
}
static t_ivector get_map_size_from_file(int fd)
{
t_ivector result;
char *next_line;
result.x = 0;
result.y = 0;
next_line = get_next_line(fd);
while (next_line)
{
if (!result.x)
result.x = get_line_len(next_line);
else if (result.x != get_line_len(next_line))
{
free(next_line);
result.x = -1;
result.y = -1;
return (result);
}
result.y++;
free(next_line);
next_line = get_next_line(fd);
}
return (result);
}
static int load_tiles_from_file(t_tilemap *tilemap, int fd)
{
int l;
char *next_line;
tilemap->tiles = malloc(tilemap->grid_size.x * tilemap->grid_size.y
* sizeof(char));
if (!tilemap->tiles)
return (1);
l = 0;
next_line = get_next_line(fd);
while (next_line)
{
if (load_tiles_from_line(tilemap, l++, next_line))
return (1);
next_line = get_next_line(fd);
}
return (0);
}
static int load_tiles_from_line(t_tilemap *tilemap, int l, char *line)
{
t_ivector pos;
static int found_player_start;
static int found_exit;
pos.x = 0;
pos.y = l;
while (line[pos.x] && line[pos.x] != '\n')
{
if (line[pos.x] != '0' && line[pos.x] != '1' && line[pos.x] != 'C'
&& line[pos.x] != 'P' && line[pos.x] != 'E')
return (1);
if (line[pos.x] == PLAYER_START && !found_player_start)
{
tilemap->player_start_tile = pos;
found_player_start = 1;
}
else if (line[pos.x] == EXIT && !found_exit)
{
tilemap->exit_tile = pos;
found_exit = 1;
}
tilemap->tiles[l * tilemap->grid_size.x + pos.x] = line[pos.x];
pos.x++;
}
return (0);
}
static int get_line_len(char *line)
{
int len;
len = 0;
while (line[len] && line[len] != '\n')
len++;
return (len);
}
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