RGSS3 Patrol

#This is a private script that emulates Rm2k3 Horizontal and Vertical movement.

class Game_Event < Game_Character

  def note
    begin
      data = []
      @page.list.each do |item|
        next unless item && (item.code == 108 || item.code == 408)
        data.push(item.parameters[0])
      end
      return data
    rescue
      return []
    end
  end

  def patrol_hor?; note.include?("<patrol hor>"); end
  def patrol_ver?; note.include?("<patrol ver>"); end

  alias yami_patrol_event_update_self_movement update_self_movement
  def update_self_movement
    yami_patrol_event_update_self_movement
    if @stop_count > stop_count_threshold
      if patrol_hor?
        set_direction([6,4].sample) unless [6,4].include?(@direction)
        set_direction(4) if @direction == 6 && !passable?(@x, @y, 6)
        set_direction(6) if @direction == 4 && !passable?(@x, @y, 4)
        move_forward
        return
      end
      #---
      if patrol_ver?
        set_direction([8,2].sample) unless [8,2].include?(@direction)
        set_direction(2) if @direction == 8 && !passable?(@x, @y, 8)
        set_direction(8) if @direction == 2 && !passable?(@x, @y, 2)
        move_forward
        return
      end
    end
  end

end