diff --git a/tiles.py b/tiles.py
index f806b4a..0564140 100644
--- a/tiles.py
+++ b/tiles.py
@@ -314,7 +314,6 @@ def astar(map, start, end):
 
         open_list.pop(current_index)
         closed_list.append(current_tile)
-
         if current_tile == end_tile:
             path = []
             current = current_tile
@@ -330,21 +329,20 @@ def astar(map, start, end):
                 continue
             new_node = Tile(current_tile, tile_position)
             children.append(new_node)
+
         for child in children:
+            skip = False
             for closed_child in closed_list:
                 if child == closed_child:
-                    continue
-
-            child.g = current_tile.g + map[child.position[0]][child.position[1]]
-            child.h = ((child.position[0] - end_tile.position[0]) ** 2) + (
-                        (child.position[1] - end_tile.position[1]) ** 2)
-            child.f = child.g + child.h
-
-            for open_node in open_list:
-                if child == open_node and child.g > open_node.g:
-                    continue
-            open_list.append(child)
-
+                    skip = True
+            if skip is False:
+                child.g = map[child.position[0]][child.position[1]]
+                child.h = np.absolute(child.position[0] - end_tile.position[0]) + np.absolute(child.position[1] - end_tile.position[1])
+                child.f = child.g + child.h
+                for open_node in open_list:
+                    if child == open_node and child.g > open_node.g:
+                        continue
+                open_list.append(child)
 
 
 map = Map()