diff --git a/w/w.c b/w/w.c
index 710475e..819e06b 100644
--- a/w/w.c
+++ b/w/w.c
@@ -601,6 +601,83 @@ char gentile(int x, int y)
 	return TILE_UNUSED;
 }
 
+int ddl = 0;
+void updatemap()
+{
+	//ddl--;
+	int x = state.position.x;
+	int y = state.position.y;
+
+	// north
+	char c = gentile(x, y - 1);
+	if (c == TILE_FREE)
+	{
+		ddl++;
+		gentile(x - 1, y - 2);
+		gentile(x + 1, y - 2);
+	} 
+	else if (c == TILE_DOOR)
+	{
+		ddl++;
+	}
+	else if (c != TILE_UNUSED)
+	{
+		ddl--;
+	}
+
+	// south
+	c = gentile(x, y + 1);
+	if (c == TILE_FREE)
+	{
+		ddl++;
+		gentile(x - 1, y + 2);
+		gentile(x + 1, y + 2);
+	} 
+	else if (c == TILE_DOOR)
+	{
+		ddl++;
+	}
+	else if (c != TILE_UNUSED) 
+	{
+		ddl--;
+	}
+
+	// east
+	c = gentile(x + 1, y);
+	if (c == TILE_FREE)
+	{
+		ddl++;
+		gentile(x + 2, y - 1);
+		gentile(x + 2, y + 1);
+	} 
+	else if (c == TILE_DOOR)
+	{
+		ddl++;
+	}
+	else if (c != TILE_UNUSED) 
+	{
+		ddl--;
+	}
+	
+	// west
+	c = gentile(x - 1, y);
+	if (c == TILE_FREE)
+	{
+		ddl++;
+		gentile(x - 2, y - 1);
+		gentile(x - 2, y + 1);
+	} 
+	else if (c == TILE_DOOR)
+	{
+		ddl++;
+	}
+	else if (c != TILE_UNUSED) 
+	{
+		ddl--;
+	}
+	
+}
+
 void dfs(int x, int y)
 {
 	if (charatpos(x,y) != TILE_START)