diff --git a/includes/so_long.h b/includes/so_long.h
index af45e66..5da804c 100644
--- a/includes/so_long.h
+++ b/includes/so_long.h
@@ -6,7 +6,7 @@
 /*   By: nbuchhol <nbuchhol@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/01/03 12:15:22 by nbuchhol          #+#    #+#             */
-/*   Updated: 2025/01/20 16:56:01 by nbuchhol         ###   ########.fr       */
+/*   Updated: 2025/01/24 14:41:59 by nbuchhol         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -26,16 +26,16 @@
 typedef struct s_valid_check
 {
 	size_t	first_line_len;
-	int		qnt_player;
-	int		qnt_collectibles;
-	int		qnt_exit;
+	size_t		qnt_player;
+	size_t		qnt_collectibles;
+	size_t		qnt_exit;
 }	t_valid_check;
 
 typedef struct s_game
 {
 	char	**map;
-	int		map_hight;
-	int		map_width;
+	size_t		map_hight;
+	size_t		map_width;
 }	t_game;
 
 size_t	ft_strlen(const char *s);
@@ -45,7 +45,7 @@ void	*ft_calloc(size_t nmemb, size_t size);
 char	*ft_substr(const char *s, unsigned int start, size_t len);
 char	*get_next_line(int fd);
 void	free_map(int map_fd, char *line);
-int		error_handling(void);
+int		error_handling(int error_code);
 int		valid_map(char *map);
 
 
diff --git a/maps/teste.ber b/maps/teste.ber
index 5579c74..03fb008 100644
--- a/maps/teste.ber
+++ b/maps/teste.ber
@@ -1,4 +1,4 @@
 1111111111111
 1P0011E000C01
-1000000000001
+10000C0000001
 1111111111111
diff --git a/src/error_handling.c b/src/error_handling.c
index ec00637..dff06c0 100644
--- a/src/error_handling.c
+++ b/src/error_handling.c
@@ -6,13 +6,13 @@
 /*   By: nbuchhol <nbuchhol@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/01/06 11:40:33 by nbuchhol          #+#    #+#             */
-/*   Updated: 2025/01/06 11:43:18 by nbuchhol         ###   ########.fr       */
+/*   Updated: 2025/01/23 11:45:45 by nbuchhol         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "../includes/so_long.h"
 
-int	error_handling(void)
+int	error_handling(int error_code)
 {
 	write(1, "Error\n", 7);
 	return (1);
diff --git a/src/utils_validation_map.c b/src/utils_validation_map.c
new file mode 100644
index 0000000..1b90d18
--- /dev/null
+++ b/src/utils_validation_map.c
@@ -0,0 +1,52 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   utils_validation_map.c                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: nbuchhol <nbuchhol@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/01/24 13:55:48 by nbuchhol          #+#    #+#             */
+/*   Updated: 2025/01/24 15:15:20 by nbuchhol         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../includes/so_long.h"
+
+int	is_rectangle(char **map, size_t map_w, size_t map_h)
+{
+	size_t	x;
+
+	x = 1;
+	while (x < map_h)
+	{
+		if (ft_strlen(map[x]) != map_w)
+			return (error_handling(1));
+		x++;
+	}
+	return (0);
+}
+
+int	valid_chars(char **map, size_t map_h, size_t map_w)
+{
+	size_t	y;
+	size_t	x;
+
+	y = 0;
+	while (y < map_h)
+	{
+		x = 0;
+		while (x < map_w)
+		{
+			if (!ft_strchr("EPC10", map[y][x]))
+				return (error_handling(1));
+			x++;
+		}
+		y++;
+	}
+	return (0);
+}
+
+int	element_blocked(char **map, size_t map_w, size_t map_h)
+{
+	return (0);
+}
diff --git a/src/validate_map.c b/src/validate_map.c
index 7a4afcf..827d403 100644
--- a/src/validate_map.c
+++ b/src/validate_map.c
@@ -6,7 +6,7 @@
 /*   By: nbuchhol <nbuchhol@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/01/09 09:58:46 by nbuchhol          #+#    #+#             */
-/*   Updated: 2025/01/20 16:54:14 by nbuchhol         ###   ########.fr       */
+/*   Updated: 2025/01/23 11:49:39 by nbuchhol         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -73,7 +73,17 @@ int	valid_map(char *map_file)
 	game.map = load_map(map_fd, &game);
 	if (!game.map)
 		return (free_map(map_fd, NULL), 1);
+	// flood fill
 	close(map_fd);
 	return (0);
 }
 
+int	flood_fill(char **map)
+{
+	int	x;
+	int	y;
+
+	x = 0;
+	y = 0;
+
+}