Item Destruction Rate

=begin
RGSS3 Item Destruction Rate　Ver.1.11  2012/03/26 mo-to

ＴＫＯＯＬ　ＣＯＯＬ
http://mototkool.blog.fc2.com/

★Usage★
Paste this script above Main.

In the item's Note box, put <probability destroy n%> n = 1 to 99.
Ex.) If <probability destroy 30%> in the Note box for the item "potion"
When used, there is a 30% chance of using up a "potion".

★Overview★
You can create items that are used with probability.

★Update history★
Ver.1.00 Initial released
Ver.1.10 Added a message for broken
Ver.1.11 Item name can also be displayed
=end

#↓Customization
module MOTO
  #Disrupted message displayed on the menu screen (control characters available)
  MESSEGE = "\\C[2] is broken!"

  #Broken message displayed during battle
  BATTLE_MESSEGE = "%s is broken!"

end
#So far

class RPG::Item < RPG::UsableItem
  #--------------------------------------------------------------------------
  # ☆ Acquisition of memo field
  #--------------------------------------------------------------------------
  def item_break_rate_set
    @item_break_rate = nil
    self.note.each_line { |line|
      case line
      when /<probability destroy \s*(\d+)([%％])?>/
        @item_break_rate = $1.to_i
      end
    }
  end
  #--------------------------------------------------------------------------
  # ☆ Acquisition of destruction probability
  #--------------------------------------------------------------------------
  def item_break_rate
    item_break_rate_set if @item_break_rate == nil
    return @item_break_rate
  end
end

class Game_Party < Game_Unit
  #--------------------------------------------------------------------------
  # ☆ Public instance variable
  #--------------------------------------------------------------------------
  attr_accessor   :lose_item_window     # Item disruption window display flag
  #--------------------------------------------------------------------------
  # ○ Object initialization
  #--------------------------------------------------------------------------
  alias ori_moto_initialize initialize
  def initialize
    ori_moto_initialize

    @lose_item_window = false
  end
  #--------------------------------------------------------------------------
  # ○ Item consumption
  #    If the specified item is consumed, reduce the number of possession.
  #--------------------------------------------------------------------------
  alias ori_moto_consume_item consume_item
  def consume_item(item)
    break_rate = rand(100) + 1
    if item.item_break_rate != nil && item.item_break_rate < break_rate &&
      item.is_a?(RPG::Item) && item.consumable
      lose_item(item, 0)
    elsif item.item_break_rate != nil && item.item_break_rate > break_rate &&
      item.is_a?(RPG::Item) && item.consumable
      lose_item(item, 1)
      @lose_item_window= true
    else
      ori_moto_consume_item(item)
    end
  end
end

class Window_Mini_Messege < Window_Selectable
  #--------------------------------------------------------------------------
  # ☆ Object initialization
  #--------------------------------------------------------------------------
  def initialize
    super(0, 0, window_width, window_height)
    @item = nil
    self.visible = false
  end
  #--------------------------------------------------------------------------
  # ☆ Item, setting of maximum number
  #--------------------------------------------------------------------------
  def set(item)
    @item = item
    refresh
  end
  #--------------------------------------------------------------------------
  # ☆ Get window width
  #--------------------------------------------------------------------------
  def window_width
    Graphics.width / 2
  end
  #--------------------------------------------------------------------------
  # ☆ Get window height
  #--------------------------------------------------------------------------
  def window_height
    return 72
  end
  #--------------------------------------------------------------------------
  # ☆ Refresh
  #--------------------------------------------------------------------------
  def refresh
    self.x = (Graphics.width - width) / 2
    self.y = (Graphics.height - height) / 2
    self.z = 255
    draw_item_name(@item, 0, 0)
    draw_text_ex(0, 26, MOTO::MESSEGE)
  end
end

class Window_BattleLog < Window_Selectable
  #--------------------------------------------------------------------------
  # ● Display action results
  #--------------------------------------------------------------------------
  def display_action_results(target, item)
    if target.result.used
      last_line_number = line_number
      display_critical(target, item)
      display_damage(target, item)
      display_affected_status(target, item)
      display_failure(target, item)
      display_lose_item(item)
      wait if line_number > last_line_number
      back_to(last_line_number)
    end
  end
  #--------------------------------------------------------------------------
  # ☆ Display when item is broken
  #--------------------------------------------------------------------------
  def display_lose_item(item)
    if $game_party.lose_item_window
      add_text(sprintf(MOTO::BATTLE_MESSEGE, item.name))
      $game_party.lose_item_window = false
      wait
    end
  end
end

class Scene_ItemBase < Scene_MenuBase
  #--------------------------------------------------------------------------
  # ○ Start process
  #--------------------------------------------------------------------------
  alias ori_moto_start start
  def start
    ori_moto_start

    create_mini_messege_window
  end
  #--------------------------------------------------------------------------
  # ☆ Create mini window
  #--------------------------------------------------------------------------
  def create_mini_messege_window
    @mini_messege_window = Window_Mini_Messege.new
    @mini_messege_window.set_handler(:ok,     method(:on_winclose_ok))
    @mini_messege_window.set_handler(:cancel, method(:on_winclose_cancel))
  end
  #--------------------------------------------------------------------------
  # ☆ Mini window close ［Ok］
  #--------------------------------------------------------------------------
  def on_winclose_ok
    @mini_messege_window.hide
    @actor_window.activate
    @actor_window.refresh
  end
  #--------------------------------------------------------------------------
  # ☆ Mini window close ［cancel］
  #--------------------------------------------------------------------------
  def on_winclose_cancel
    @mini_messege_window.hide
    @actor_window.activate
    @actor_window.refresh
  end
  #--------------------------------------------------------------------------
  # ○ Use item
  #--------------------------------------------------------------------------
  alias ori_moto_use_item use_item
  def use_item
    ori_moto_use_item

    if $game_party.lose_item_window
      @actor_window.deactivate
      @mini_messege_window.set(item)
      @mini_messege_window.show
      @mini_messege_window.activate
      $game_party.lose_item_window = false
      Input.update
    end
  end
end