class Scene_Battle
  alias battle_main main
  def main
    pces = $data_common_events.select {|event| event && !event.nil?}
    @common_events = pces.collect do |common_event|
      Game_CommonEvent.new(common_event.id)
    end
    battle_main
  end
  alias battle_update update
  def update
    @common_events.each{|event|event.refresh; event.update}
    battle_update
  end
  end