ble, for performance reasons
</span>  <span class='id identifier rubyid_cur_sprite_idx'>cur_sprite_idx</span> <span class='op'>=</span> <span class='int'>0</span>
  <span class='id identifier rubyid_total_sprite_length'>total_sprite_length</span> <span class='op'>=</span> <span class='id identifier rubyid_sprites'>sprites</span><span class='period'>.</span><span class='id identifier rubyid_count'>count</span>
  <span class='kw'>while</span> <span class='id identifier rubyid_cur_sprite_idx'>cur_sprite_idx</s