[RGSS3] Switch toggable map variable icon display

class Scene_Map < Scene_Base
  # Switch for opening/closing the gold window
  VARIABLE_DISPLAY_SWITCH = 15
  VARIABLE_ID = 42
  VARIABLE_ICON_INDEX = 20
  VARIABLE_X = 424
  VARIABLE_Y = 48
  VARIABLE_WIDTH = 120
  VARIABLE_HEIGHT = 48
  VARIABLE_ICON_OFFSET = 48
  VARIABLE_TEXT_OFFSET = 50

  ##
  # Aliases
  #
  alias_method :zeriab_variable_create_all_windows, :create_all_windows
  def create_all_windows
    zeriab_variable_create_all_windows
    create_variable_display
  end

  alias_method :zeriab_variable_update_scene, :update_scene
  def update_scene
    zeriab_variable_update_scene
    update_variable_display
  end

  ##
  # Creation
  #
  def create_variable_display
    @variable_display = Window_VariableDisplay.new(
      VARIABLE_ID,
      VARIABLE_ICON_INDEX,
      VARIABLE_X,
      VARIABLE_Y,
      VARIABLE_WIDTH,
      VARIABLE_HEIGHT)
    @variable_display.icon_offset = VARIABLE_ICON_OFFSET
    @variable_display.text_offset = VARIABLE_TEXT_OFFSET
    @variable_display.openness = 0

    @show_variable_display = $game_switches[VARIABLE_DISPLAY_SWITCH]
    @variable_display.open if @show_variable_display
  end

  ##
  # Update open state
  #
  def update_variable_display
    if @show_variable_display != $game_switches[VARIABLE_DISPLAY_SWITCH]
      @show_variable_display = $game_switches[VARIABLE_DISPLAY_SWITCH]
      if @show_variable_display
        @variable_display.open
      else
        @variable_display.close
      end
      @variable_display.update
    end
  end
end

##
# Variable display with icon
#
class Window_VariableDisplay < Window_Base
  attr_reader :variable_id
  attr_reader :icon_index
  attr_accessor :icon_offset
  attr_accessor :text_offset

  def value; $game_variables[@variable_id]; end

  ##
  # Init
  #
  def initialize(variable_id, icon_index, x, y, width, height)
    #super(0, 0, window_width, fitting_height(1))
    super(x, y, width, height)
    @variable_id = variable_id
    @icon_index = icon_index
    self.icon_offset = 48
    self.text_offset = 50
    refresh
  end

  ##
  # Refresh
  #
  def refresh
    contents.clear
    draw_icon(icon_index, width - icon_offset, 0)
    draw_text(0, 0, width - text_offset, line_height, value, 2)
  end

  ##
  # Update
  #
  def update
    super
    @old_value ||= value
    if @old_value != value
      @old_value = value
      refresh
    end
  end
end