# SP 消費
      $sim_actor[0].sp -= $data_skills[skill_id].sp_cost
      if (attack.group & 1) != 0
        exp = $sim_actor[1].exp_list[$sim_actor[1].level+1] - $sim_actor[1].exp_list[$sim_actor[1].level]
        if $sim_actor[1].hp == 0
          $sim_actor[0].add_exp = exp
        else
          dmg = $sim_actor[1].damage != "Miss" ? $sim_actor[1].damage : 0
          # マイナスは回復なので反転
          if dmg < 0
            dmg = -dmg
          end
          $sim_actor[0].add_exp = dmg * exp / $sim_actor[1].maxhp
        end
      end