Run Common Event When Equipping an Item ~ RGSS2

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#             Run Common Event When Equipping an Item
#             Version: 1.0
#             Author: DiamondandPlatinum3
#             Date: September 25, 2012
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#  Description:
#
#    This script allows you to run a common event when you equip an item, be
#    it a weapon or a piece of armour.
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#------------------------------------------------------------------------------
#  Instructions:
#
#     ~  In your weapon and armour noteboxes, insert this line of code
#
#           ~E_COMMONEVENT_ID: ?
#
#        Replacing the ? with a number to represent which common event you
#        want to run when that specific item is equipped.
#
#
#     ~  You do not have to place this code on every weapon and armour you
#        have, just the ones you wish to use a common event on.
#
#
#     ~  There is a visual example that can be found
#        Here: http://img4host.net/upload/242103145060ae72be40a.png
#
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#
#
#                  THERE IS NO EDITABLE REGION TO THIS SCRIPT
#
#==============================================================================












class Game_Actor < Game_Battler
  #--------------------------------------------------------------------------
  # * Change Equipment (designate object)
  #     equip_type : Equip region (0..4)
  #     item       : Weapon or armor (nil is used to unequip)
  #     test       : Test flag (for battle test or temporary equipment)
  #--------------------------------------------------------------------------
  alias dp3_equipcommonevent_9jsg4 change_equip
  def change_equip(equip_type, item, test = false)

    # Call Original Method
    dp3_equipcommonevent_9jsg4(equip_type, item, test)


    # Proceed
    item_id = item == nil ? 0 : item.id
    note = nil

    if item_id > 0
      if equip_type == 0
        note = $data_weapons[item_id].note
      elsif equip_type > 0
        note = $data_armors[item_id].note
      end

      note[/~E_COMMONEVENT_ID: ([-0-9]+)/]
      $game_temp.common_event_id = $1.to_i if $1
    end # If Statement

  end # Function
end # Class