input: Write a python function to check if the player has reached the door.
  assert has_player_reached_door((1, 1), (1, 1)) == True
  assert has_player_reached_door((0, 0), (2, 2)) == False
  assert has_player_reached_door((2, 2), (2, 2)) == True
output: def has_player_reached_door(player_position, door_position):
      return player_position == door_position