code: def clear_surroundings(self):
          
          cells_to_clear = self.grd.eight_neighbors(self.current_y, self.current_x)
          for cell in cells_to_clear:
              self.grd.set_tile(cell[0], cell[1], ' ')
docs: clears the cells immediately around the grid of the agent
          (just to make it find to see on the screen)