PassengerRole

###Data

Structure destination;
Structure currentLocation;

List<Vehicle> boardingRequest;

Vehicle currentVehicle;

Car car;

Queue<Move> waypoints;

class Move {Structure s, MoveType m};
enum MoveType {Walk,Bus,Car};

Person p;

enum PassengerState {None,Waiting,Boarding,InTransit,Arrived};
PassengerState s;

Semaphore waitingForVehicle;

###Messages

public void msgGoTo (Structure structure)
{
	destination = structure;
	s = PassengerState.None;
	waypoints.clear();
}

public void msgPleaseBoard (Vehicle vehicle)
{
	boardingRequest.add(vehicle);
	waitingForVehicle.release ();
}

public void msgReachedDestination(Structure location)
{
	currentLocation = location;
	s = Arrived;
}

###Scheduler

@Override
protected boolean pickAndExecuteAnAction()
{
	if currentLocation == destination && s == PassengerState.None && waypoints.isEmpty()
		finishMoving ();
	if s == PassengerState.None && waypoints.isEmpty()
		populateWaypoints ();
	if !boardingRequest.isEmpty()
		checkBoardingRequest (boardingRequest.remove(0));
	if s == Arrived
		processArrival ();
	if s != PassengerState.InTransit;
		goToLocation(waypoints.front());
}

###Actions

private void checkBoardingRequest(Vehicle vehicle)
{
	if vehicle instanceof Bus
		if bus has next waypoint on its route
			vehicle.msgDoneBoarding(this)
			currentVehicle = vehicle;
			boardingRequest.clear();
			s = PassengerState.InTransit
		else
			vehicle.msgNotBoarding(this);
			waitingForVehicle.acquire ();
	if vehicle instanceof Car && car == vehicle
		vehicle.msgDoneBoarding (this)
		currentVehicle = vehicle;
		boardingRequest.clear();
		s = PassengerState.InTransit;
}

private void finishMoving ()
{
	p.msgDoneMoving (currentLocation);
	active = false;
	currentVehicle = null;
}

private void populateWaypoints ()
{
	if car != null
		waypoints.add (new Move (destination,MoveType.Car));
		waypoints.add (new Move (destination,MoveType.Walk));
	List<BusStop> stops = //find the two bus stops I need to go to
	if found route
		waypoints.add (new Move (stops.get(0),MoveType.Walk));
		waypoints.add (new Move (stops.get(1),MoveType.Bus));
		waypoints.add (new Move (stops.get(1),MoveType.Walk));
		waypoints.add (new Move (destination, MoveType.Walk));
	else
		waypoints.add (new Move (destination,MoveType.Walk));
}

private void goToLocation (Move move)
{
	switch(move.m)
	{
		case MoveType.Walk : doGoToStructure (move.s); s = Arrived;
		case MoveType.Bus  : (currentLocation as BusStop).add(this); waitingForVehicle.acquire ();
		case MoveType.Car  : car.msgCallCar(currentLocation,destination); waitingForVehicle.acquire ();
	}
}

private void processArrival ()
{
	 if currentLocation == waypoints.front().s
		Structure s = waypoints.pop ();
		if currentVehicle != null
			currentVehicle.leaving ();
			currentVehicle = null;
			s = PassengerState.None;
	else
		currentVehicle.staying ();
}