Item Price Changer

#===============================================================
# ● [VX] ◦ Item Price Changer ◦ □
# * Change item/weapon/armor's price in-game *
#--------------------------------------------------------------
# ◦ by Woratana [woratana@hotmail.com]
# ◦ Thaiware RPG Maker Community
# ◦ Released on: 26/06/2008
# ◦ Version: 1.0
#--------------------------------------------------------------

#==================================================================
# ** HOW TO USE **
#-----------------------------------------------------------------
# ** To change item's price, call script:
#  Price_Edit.item(id, price)
#
# * id: ID of item you want to change price
# * price: New price
#
# ** To change weapon's price, call script:
#  Price_Edit.weapon(id, price)
#
# ** To change armor's price, call script:
#  Price_Edit.armor(id, price)
#
# ** You can leave the price blank to reset item's price:
#  Price_Edit.item(id)
#  Price_Edit.weapon(id)
#  Price_Edit.armor(id)
# * This will use default price you set in database.
#===============================================================

module Price_Edit
  def self.item(id, price = nil)
    price ||= $data_items[id].real_price
    $game_system.new_price['item'][id] = price
  end
  
  def self.weapon(id, price = nil)
    price ||= $data_weapons[id].real_price
    $game_system.new_price['weapon'][id] = price
  end
  
  def self.armor(id, price = nil)
    price ||= $data_armors[id].real_price
    $game_system.new_price['armor'][id] = price
  end
end

class Game_System
  def new_price
    if @new_price.nil?
      @new_price = {}
      @new_price['item'] = []
      @new_price['weapon'] = []
      @new_price['armor'] = []
    end
    return @new_price
  end
end

module RPG
  class BaseItem
    def real_price
      return @price
    end
  end
  
  class Item
    def price
      return $game_system.new_price['item'][@id].nil? ? @price :
    $game_system.new_price['item'][@id]
    end
  end
  
  class Weapon
    def price
      return $game_system.new_price['weapon'][@id].nil? ? @price :
    $game_system.new_price['weapon'][@id]
    end
  end
  
  class Armor
    def price
      return $game_system.new_price['armor'][@id].nil? ? @price :
    $game_system.new_price['armor'][@id]
    end
  end
end