SCRIPT HELP

class Window_ItemCategory < Window_HorzCommand
  def make_command_list
    add_command(Vocab::item,     :item)
    add_command(Vocab::weapon,   :weapon)
    add_command(Vocab::armor,    :armor)
    add_command(Vocab::key_item, :key_item)
  end
end

class Window_ItemList < Window_Selectable
  def include?(item)
    case @category
    when :item
      item.is_a?(RPG::Item) && !item.key_item?
    when :weapon
      item.is_a?(RPG::Weapon)
    when :armor
      item.is_a?(RPG::Armor)
    when :key_item
      item.is_a?(RPG::Item) && item.key_item?
    else
      false
    end
  end
  
  def draw_item(index)
    item = @data[index]
    if item
      rect = item_rect(index)
      rect.width -= 4
      draw_item_name(item, rect.x, rect.y, enable?(item))
      draw_item_number(rect, item)
    end
  end
end

class Scene_Item < Scene_ItemBase
  def create_category_window
    @category_window = Window_ItemCategory.new
    @category_window.viewport = @viewport
    @category_window.help_window = @help_window
    @category_window.y = @help_window.height
    @category_window.set_handler(:ok,     method(:on_category_ok))
    @category_window.set_handler(:cancel, method(:return_scene))
  end

  def create_item_window
    wy = @category_window.y + @category_window.height
    wh = Graphics.height - wy
    @item_window = Window_ItemList.new(0, wy, Graphics.width, wh)
    @item_window.viewport = @viewport
    @item_window.help_window = @help_window
    @item_window.set_handler(:ok,     method(:on_item_ok))
    @item_window.set_handler(:cancel, method(:on_item_cancel))
    @category_window.item_window = @item_window
  end

  def on_category_ok
    @item_window.activate
    @item_window.select_last
  end
end