Add possibility to define the background color of entities (black in ASCII, white in Unicode)

dungeonbattle/game.py

@@ -71,6 +71,7 @@ class Game:
             self.display_refresh()
             key = screen.getkey()
             self.handle_key_pressed(self.translate_key(key))
+            self.map.tick()
 
     def translate_key(self, key: str) -> KeyValues:
         """