/**
* Load game state from file
*
* @param path Path to file
*/
public void deserialize(String path) {
try {
for (int i = 0; i < getVehicles().size(); i++) {
getVehicles().get(i).stopThread();
}
for (int i = 0; i < getIntersections().size(); i++) {
getIntersections().get(i).stopThread();
}
Passenger p = passengers.poll();
while (p != null) {
p.stopThread();
p = passengers.poll();
}
vehicles = null;
intersections = null;
passengers = null;
// DrawPanel.getInstance() = null;
// VehicleInspector.getInstance() = null;
_instance = null;
// Just to make sure things are right
Thread.sleep(500);
ObjectInputStream in =
new ObjectInputStream(new BufferedInputStream(new FileInputStream(path)));
_instance = (WorldManager) in.readObject();
in.close();
Thread.sleep(500);
announceWorldChange();
System.out.println("Deserialized!");
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* This method reports that a passenger is taking stairs (no elevator is available on the
* appropriate floor).
*
* @param newPass Passenger object for this passenger
*/
private static void takingStairs(Passenger newPass) {
System.out.print(
"Passenger " + newPass.getName() + " arrives on floor " + newPass.getFloor() + ".");
System.out.println(" Taking stairs.");
} // end takingStairs
/**
* Read and process each item in the simulation file. It reads each input item in the file. If a
* PASSENGER entry, a passenger object is created, and the elevators are checked to see if one is
* available to service this passenger. If so, the passenger is logically added to the elevator.
* If an elevator is not available, the passenger must take the stairs.
*
* <p>If the input item is a TICK, it indicates that one time unit has passed. At EOF, the method
* is invoked to shut the elevators down and perform the end of day processing.
*
* <p>If an error is detected at any time, this method returns the proper boolean to the calling
* method.
*
* @return True or False to indicate an error
*/
private static boolean processSimulationFile() {
// local constants used by this method
final String PASSENGER = "passenger";
final String TICK = "tick";
final String SIMULATION_END = "done";
boolean done = false; // set when done
boolean error = false; // set if error detected
boolean addedOK = false; // set if no elevator is available
Passenger newPass = null; // new passenger object
Elevator availableEl = null; // elevator object
// Read next token from file and process
try {
while (!done && !error && in.nextToken() != in.TT_EOF) {
if (in.sval.equals(PASSENGER)) {
// if a new passenger, create a new object, look
// for an elevator and add to elevator. If elevator
// is not available, passenger takes the stairs.
newPass = newPassenger();
availableEl = findElevator(newPass);
if (availableEl == null) takingStairs(newPass);
else {
System.out.print(
"Passenger: "
+ newPass.getName()
+ " arrives on floor "
+ newPass.getFloor()
+ ".");
addedOK = availableEl.addPassenger(newPass);
if (!addedOK) {
error = true;
}
}
} else if (in.sval.equals(TICK)) {
// token read from file is a time indicator
recordTick();
} else if (in.sval.equals(SIMULATION_END)) {
// end of file == end of workday
done = true;
} else {
error = true;
}
} // end while
if (in.nextToken() == in.TT_EOF) {
// perform end of day reporting
endOfDay();
}
// catch for file exception
} catch (IOException e) {
error = true;
} // end try
return error;
} // end processSimulationFile