mirror of
https://github.com/Ladebeze66/cub3D.git
synced 2025-12-16 14:07:56 +01:00
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_read_map.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: fgras-ca <fgras-ca@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/01/11 19:28:43 by fgras-ca #+# #+# */
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/* Updated: 2024/01/15 21:48:46 by fgras-ca ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../cub3d.h"
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char *read_map(const char *filename, int *length)
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{
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int file;
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char buffer[1024]; // Taille de tampon temporaire pour la lecture
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int total_length = 0;
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int bytes_read;
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char *map_content;
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// Ouvrir le fichier pour la première lecture
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file = open(filename, O_RDONLY);
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if (file < 0)
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{
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perror("Error opening file");
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return (NULL);
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}
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// Lire le fichier pour déterminer sa taille
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while ((bytes_read = read(file, buffer, sizeof(buffer))) > 0)
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total_length += bytes_read;
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// Fermer le fichier après la première lecture
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close(file);
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// Allouer de la mémoire pour le contenu de la carte
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map_content = (char *)malloc(total_length + 1);
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if (!map_content)
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{
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perror("Error allocating memory for map");
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return (NULL);
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}
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// Rouvrir le fichier pour la deuxième lecture
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file = open(filename, O_RDONLY);
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if (file < 0)
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{
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perror("Error opening file");
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free(map_content);
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return (NULL);
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}
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// Lire le contenu du fichier dans le tampon
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*length = 0;
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while ((bytes_read = read(file, map_content + *length, total_length - *length)) > 0)
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*length += bytes_read;
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// Ajouter le caractère de fin de chaîne
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map_content[*length] = '\0';
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// Fermer le fichier
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close(file);
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return map_content;
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}
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static int check_line(char *map, int maxWidth, int y, int linelength)
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{
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int x;
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char c;
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x = 1;
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while (x < linelength - 1)
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{
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c = map[y * maxWidth + x];
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if (c == ' ' && (map[y * maxWidth + (x - 1)] != '1'
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|| map[y * maxWidth + (x + 1)] != '1'
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|| (y > 0 && map[(y - 1) * maxWidth + x] != '1')
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|| (y < maxWidth - 1 && map[(y + 1) * maxWidth + x] != '1')))
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return (0);
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x++;
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}
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return (1);
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}
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static int check_row(char *map, int maxWidth, int y)
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{
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int x;
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int linelength;
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x = 0;
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linelength = 0;
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while (x < maxWidth && map[y * maxWidth + x] != ' ')
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{
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linelength++;
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x++;
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}
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return (check_line(map, maxWidth, y, linelength));
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}
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int check_interior(char *map, int maxWidth, int height)
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{
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int y;
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y = 0;
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while (y < height)
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{
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if (!check_row(map, maxWidth, y))
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return (0);
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y++;
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}
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return (1);
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}
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