1 files changed, 128 insertions, 0 deletions
diff --git a/src/tilemap.c b/src/tilemap.c
new file mode 100644
index 0000000..ef830c7
--- /dev/null
+++ b/src/tilemap.c
@@ -0,0 +1,128 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   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);
+}