Merge branch 'main' into refactor_rename

# Conflicts:
#	marl_factory_grid/environment/entity/entity.py
#	marl_factory_grid/modules/destinations/entitites.py
#	marl_factory_grid/modules/doors/entitites.py
#	marl_factory_grid/modules/items/groups.py

marl_factory_grid/environment/entity/entity.py

@@ -1,8 +1,12 @@
 import abc
 from collections import defaultdict
 
+import numpy as np
+
 from .object import Object
 from .. import constants as c
+from .object import EnvObject
+from ...utils.utility_classes import RenderEntity
 from ...utils.render import RenderEntity
 from ...utils.results import ActionResult
 
@@ -62,30 +66,33 @@ class Entity(Object, abc.ABC):
     def pos(self):
         return self._pos
 
-    # @property
-    # def last_tile(self):
-    #     try:
-    #         return self._last_tile
-    #     except AttributeError:
-    #         # noinspection PyAttributeOutsideInit
-    #         self._last_tile = None
-    #         return self._last_tile
+    @property
+    def last_pos(self):
+        try:
+            return self._last_pos
+        except AttributeError:
+            # noinspection PyAttributeOutsideInit
+            self._last_pos = c.VALUE_NO_POS
+            return self._last_pos
 
     @property
     def direction_of_view(self):
-        last_x, last_y = self._last_pos
-        curr_x, curr_y = self.pos
-        return last_x - curr_x, last_y - curr_y
+        if self._last_pos != c.VALUE_NO_POS:
+            return 0, 0
+        else:
+            return np.subtract(self._last_pos, self.pos)
 
     def move(self, next_pos, state):
         next_pos = next_pos
         curr_pos = self._pos
         if not_same_pos := curr_pos != next_pos:
             if valid := state.check_move_validity(self, next_pos):
-                self._pos = next_pos
-                self._last_pos = curr_pos
                 for observer in self.observers:
-                    observer.notify_change_pos(self)
+                    observer.notify_del_entity(self)
+                self._view_directory = curr_pos[0]-next_pos[0], curr_pos[1]-next_pos[1]
+                self._pos = next_pos
+                for observer in self.observers:
+                    observer.notify_add_entity(self)
             return valid
         return not_same_pos
 
@@ -93,6 +100,7 @@ class Entity(Object, abc.ABC):
         super().__init__(**kwargs)
         self._status = None
         self._pos = pos
+        self._last_pos = pos
         if bind_to:
             try:
                 self.bind_to(bind_to)