#==============================================================================
# ** Skills_Consume_Hp
#------------------------------------------------------------------------------
# By: Gando
# 18/5 2008
#------------------------------------------------------------------------------
#                              INTRODUCTION
#------------------------------------------------------------------------------
#
#  With this script-x you can have certain skills that not only consumes sp,
#  but also hp! Let's say you want to have a character that has a very powerful
#  skill. A skill so powerful that it damages himself too.
#  With this script-x this is possible.
#
#------------------------------------------------------------------------------
#                                 SETUP
#------------------------------------------------------------------------------
#
#  To have a skill that consumes hp, first create the skill in the skill database.
#  Then in this script-x, go to "Skills" in module HpDrain and add the skill id
#  and how much hp it should drain. Like this:
#
#  skill_id => [hp]
#
# 
#  Damage_Popup - Toggle this true/false to enable/disable the popup damage text
#                 for the skills user.
#
#------------------------------------------------------------------------------
#  CREDITS: Gando.
#==============================================================================
# ** Module HpDrain
#==============================================================================
module HpDrain
#skill_id => [hp]
  Skills = 
  {
  13 => [10],
  57 => [50],
  61 => [200]
  }
 
  Damage_Popup = true
end

#==============================================================================
# ** Scene_Battle
#------------------------------------------------------------------------------
#  This class performs battle screen processing.
#==============================================================================
class Scene_Battle
  alias hp_cost_skill_action make_skill_action_result
  #--------------------------------------------------------------------------
  # * Make Skill Action Results
  #--------------------------------------------------------------------------
  def make_skill_action_result
    @skill = $data_skills[@active_battler.current_action.skill_id]
    if HpDrain::Skills.include?(@skill.id)
      @hp_drain = HpDrain::Skills[@skill.id][0]
      case @skill.id
      when @skill.id
        @active_battler.hp -= @hp_drain
        @active_battler.damage = @hp_drain
        @active_battler.damage_pop = HpDrain::Damage_Popup
       end
    end
    hp_cost_skill_action
  end
end

------------------------------------------------
윗 부분에서
  {
  13 => [10],
  57 => [50],
  61 => [200]
  }
이 부분의 x => [y]

부분이면 x는 스킬의 번호입니다. ex) '001:파이어' 에서 x = 1

y는 hp의 감소량입니다.