code: def draw_grid(self):
          
          self.screen.fill((0xbb, 0xad, 0xa0), self.origin + (self.game_width, self.game_height))
          for y, row in enumerate(self.grid):
              for x, cell in enumerate(row):
                  self.screen.blit(self.tiles[cell], self.get_tile_location(x, y))
docs: Draws the grid and tiles.