pan> <span class='op'>&lt;</span> <span class='id identifier rubyid_total_sprite_length'>total_sprite_length</span>
    <span class='id identifier rubyid_sprite'>sprite</span> <span class='op'>=</span> <span class='ivar'>@sprites</span><span class='lbracket'>[</span><span class='id identifier rubyid_cur_sprite_idx'>cur_sprite_idx</span><span class='rbracket'>]</span>
    <span class='id identifier rubyid_cur_sprite_idx'>cur_sprite_idx</span> <span class='op'>+=</span> <span class='int'>1</span>
    <span cl