[RMVX ACE] WAY TO CHECK IF PLAYER IS ON A BOAT/SHIP?

vehicle.set_graphic("Vehicle", 7)

class Game_Player < Game_Character
  
  alias :update_vehicle_get_on_change_gfx :update_vehicle_get_on unless $@
  def update_vehicle_get_on
    # Call original method to do core geton stuff
    update_vehicle_get_on_change_gfx
    
    # Wait until the hero is done getting on the vehicle
    if !@followers.gathering? && !moving?
      # Then update the vehicle graphic based on what vehicle they're getting on
      case @vehicle_type
      when :boat
        #vehicle = $game_map.vehicles[0]
        vehicle.remember_current_graphic
        vehicle.set_graphic("Vehicle", 5) unless vehicle.nil?
      when :ship
        #vehicle = $game_map.vehicles[1]
        vehicle.remember_current_graphic
        vehicle.set_graphic("Vehicle", 6) unless vehicle.nil?
      when :airship
        #vehicle = $game_map.vehicles[2]
        vehicle.remember_current_graphic
        vehicle.set_graphic("Vehicle", 7) unless vehicle.nil?
      end
    end
  end
  
  alias :update_vehicle_get_off_change_gfx :update_vehicle_get_off unless $@
  def update_vehicle_get_off
    # Remember our current vehicle, it can change between calling the
    # original method
    vehicle_temp = vehicle
    
    # Call original method to do core getoff stuff
    update_vehicle_get_off_change_gfx
    
    # Wait until the hero is done getting off the vehicle
    if !@followers.gathering? && vehicle_temp.altitude == 0
      # Then update the vehicle graphic based on what vehicle they're getting off
      vehicle_temp.restore_remembered_graphics unless vehicle_temp.nil?
    end
  end
  
end

class Game_Vehicle < Game_Character
  
  # Remember the current vehicle graphics and store them
  def remember_current_graphic
    @remembered_character_name = @character_name
    @remembered_character_index = @character_index
  end
  
  # Call this to restore a vehicle to the remembered settings
  def restore_remembered_graphics
    @character_name = @remembered_character_name 
    @character_index = @remembered_character_index 
  end
end