Chaos Project

class Interpreter
  def used_item(id)
    flag = id == $game_temp.key_item
    $game_temp.key_item = 0 #<============= This
    return flag
  end
end

$game_temp.key_item = 0

#===============================================================================
# Chrono Cross Key Items
# Version 1.1
# Author gameus
#-------------------------------------------------------------------------------
# Intro:
# Ever play Chrono Cross? You can bring up a window that displays a list of 
# your Key Items and you can use them on NPCs and events to have a 
# certain action take place.
#
# Features:
# -Display All Items or Marked Items
# -Won't conflict while events are running
# -Use items on NPCs and have something happen
#
# Instructions:
# This script is pretty much plug-n-play. But you have to decide if you want
# to display All Items or just Key Items. If you just want Key Items, scroll
# down and set "CCKEY_SHOW_ALL_ITEMS" to false. Then be sure to create a 
# unique element which will be used as your Key Item Element. Mark any item
# with this element that you want made as a key item. Then set 
# "CCKEY_ITEM_ELEMENT" to that element's id.
#
# Using this with Events:
# All it requires is a simple Conditional Branch Script Call. 
#   used_item(item_id)
#   -item_id = The id of the item you'd like the event to react to.
# It's a bit hard to explain, but that's why there's a demo.
#
# Compatibility:
# -Not tested with SDK
# -Shouldn't conflict with anything
#
# Version History:
# 1.0
# -Initial Release
#
# 1.1
# -Allowed multiple item calls in one event page
#
# Credits:
# gameus ~ For creating the script
# SquareSoft ~ For inspiring the script
#===============================================================================
#------------------------------------------
# Button to bring up Key Item Window
#------------------------------------------
CCKEY_INPUT_BUTTON   = Input::A
#------------------------------------------
# Whether or not to show entire inventory
# Excludes Weapons and Armors
#------------------------------------------
CCKEY_SHOW_ALL_ITEMS = true
#------------------------------------------
# If above is set to false, this element
# must be applied to any item you'd like
# to show up in the window
#------------------------------------------
CCKEY_ITEM_ELEMENT   = 17

#==============================================================================
# Window_CCKeyItem
#------------------------------------------------------------------------------
#  On map window to display "key items" that can be used with events
#==============================================================================
class Window_CCKeyItems < Window_Selectable
  #----------------------------------------------------------------------------
  # Creates Window
  #----------------------------------------------------------------------------
  def initialize
    super(48, 304, 544, 160)
    self.back_opacity = 160
    self.active = false
    self.visible = false
    @column_max = 2
    refresh
  end
  #----------------------------------------------------------------------------
  # Updates Window
  #----------------------------------------------------------------------------
  def update
    super
    if Input.trigger?(Input::C) && self.active
      $game_system.se_play($data_system.decision_se)
      self.active = false
      self.visible = false
      $game_temp.key_item = selected_item.id
      $game_temp.message_window_showing = false
      return
    elsif Input.trigger?(CCKEY_INPUT_BUTTON) && 
        !$game_temp.message_window_showing && 
        !$game_system.map_interpreter.running?
      $game_system.se_play($data_system.decision_se)
      refresh
      self.index = 0
      self.active = true
      self.visible = true
      $game_temp.message_window_showing = true
      return
    elsif Input.trigger?(Input::B) && self.active
      $game_system.se_play($data_system.cancel_se)
      self.active = false
      self.visible = false
      $game_temp.message_window_showing = false
    end
  end
  #----------------------------------------------------------------------------
  # Refreshes Window
  #----------------------------------------------------------------------------
  def refresh
    if self.contents != nil
      self.contents.dispose
      self.contents = nil
    end
    @items = []
    for i in 1...$data_items.size
      item = $data_items[i]
      next if !($game_party.item_number(i) > 0)
      if item.element_set.include?(CCKEY_ITEM_ELEMENT) || CCKEY_SHOW_ALL_ITEMS
        @items.push(item)
      end
    end
    @item_max = @items.size
    if @item_max > 0
      self.contents = Bitmap.new(width - 32, row_max * 32)
      for i in 0...@item_max
        draw_item(i)
      end
    end
  end
  #----------------------------------------------------------------------------
  # Draws Item
  #----------------------------------------------------------------------------
  def draw_item(index)
    item = @items[index]
    x = 4 + index % 2 * (244 + 32)
    y = index / 2 * 32
    rect = Rect.new(x, y, self.width / @column_max - 32, 32)
    self.contents.fill_rect(rect, Color.new(0, 0, 0, 0))
    bitmap = RPG::Cache.icon(item.icon_name)
    self.contents.blt(x, y + 4, bitmap, Rect.new(0, 0, 24, 24))
    self.contents.draw_text(x + 28, y, 212, 32, item.name, 0)
  end
  #----------------------------------------------------------------------------
  # Returns Selected Item
  #----------------------------------------------------------------------------
  def selected_item
    return @items[self.index]
  end
end

#==============================================================================
# Interpreter (Edit)
#------------------------------------------------------------------------------
#  Added the method "used_item(id)"
#==============================================================================
class Interpreter
  def used_item(id)
    flag = id == $game_temp.key_item
    return flag
  end
  
  alias gg_cckeys_command_end_lat command_end
  def command_end
    $game_temp.key_item = 0
    gg_cckeys_command_end_lat
  end
end

#==============================================================================
# Scene_Map (Edit)
#------------------------------------------------------------------------------
#  Modified to add Window_CCKeyItem
#==============================================================================
class Scene_Map
  #----------------------------------------------------------------------------
  # Initializes Map
  #----------------------------------------------------------------------------
  alias gg_main_cckeys_map_lat main
  def main
    @key_window = Window_CCKeyItems.new
    gg_main_cckeys_map_lat
    @key_window.dispose
  end
  #----------------------------------------------------------------------------
  # Updates Map
  #----------------------------------------------------------------------------
  alias gg_update_cckeys_map_lat update
  def update
    @key_window.update
    gg_update_cckeys_map_lat
  end
end

#==============================================================================
# Game_Temp
#------------------------------------------------------------------------------
#  Added @key_item to keep track of the used item.
#==============================================================================
class Game_Temp
  attr_accessor :key_item
end