code: def extract_now_state(self):
          '''
          Extract now map state.
          
          Returns:
              `np.ndarray` of state.
          '''
          x, y = self.__agent_pos
          state_arr = np.zeros(self.__map_arr.shape)
          state_arr[x, y] = 1
          return np.expand_dims(state_arr, axis=0f extract_now_state(self):
          '''
          Extract now map state.
          
          Returns:
              `np.ndarray` of state.
          '''
          x, y = self.__agent_pos
          state_arr = np.zeros(self.__map_arr.shape)
          state_arr[x, y] = 1
          return np.expand_dims(state_arr, axis=0)
docs: Extract now map state.
          
          Returns:
              `np.ndarray` of state.