code: def _load_text_assets(self, text_image_file, text_file):
          
  
          text_pixels = self.load_image(text_image_file, False)
          with open(text_file, 'r') as f:
              loaded_text = f.read()
          self._text_dict = {}
          for index, s in enumerate(loaded_text):
              start = index * 40
              end = start + 40
              char = text_pixels[start:end]
              self._text_dict[s] = char
docs: Internal. Builds a character indexed dictionary of pixels used by the
          show_message function below