diff --git a/fillit.c b/fillit.c
new file mode 100644
index 0000000..b75598a
--- /dev/null
+++ b/fillit.c
@@ -0,0 +1,43 @@
+#include "fillit.h"
+
+unsigned int	ft_sqrt_ceil(unsigned int num)
+{
+	int i;
+
+	i = 1;
+	while (i * i < num)
+		i++;
+	return (i);
+}
+
+void	clear_map(t_map *map)
+{
+	int i;
+
+	i = 0;
+	while (i < 16)
+		map->line[i++] = 0;
+}
+
+t_tetraminos	*convert_tetramino(char *s)
+{
+	t_tetraminos	*res;
+
+	res = (t_tetraminos*)malloc(sizeof(t_tetraminos));
+	return (res);
+}
+
+t_map	*map_initialization(char **tetramino_table)
+{
+	t_map				*map;
+	unsigned int		i;
+
+	map = (t_map*)malloc(sizeof(t_map));
+	i = 0;
+	while (*tetramino_table)
+		map->figure[i++] = convert_tetramino(*tetramino_table++);
+	map->figure_amount = i;
+	map->size = ft_sqrt_ceil(i * 4);
+	clear_map(map);
+	return (map);
+}
diff --git a/fillit.h b/fillit.h
new file mode 100644
index 0000000..7cacc14
--- /dev/null
+++ b/fillit.h
@@ -0,0 +1,17 @@
+typedef	struct		s_tetraminos
+{
+	uint16_t	line[16];
+	int			offset_y;
+}					t_tetraminos;
+
+typedef	struct		s_map
+{
+	uint16_t		line[16];
+	unsigned int	size;
+	t_tetraminos	*figure[26];
+	unsigned int	figure_amount;
+}					t_map;
+
+t_tetraminos	*convert_tetramino(char *s);
+t_map			*map_initialization(char **tetramino_table);
+