docs: def _scale_tile(self, value, width, height):
          """Return the prescaled tile if already exists, otherwise scale and store it."""
          try:
              return self._scale_cache[value, width, height]
          except KeyError:
              tile = pygame.transform.smoothscale(self.tiles[value], (width, height))
              self._scale_cache[value, width, height] = tile
              return tile