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Flight.java
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Flight.java
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import java.io.*;
import java.util.*;
public class Flight {
private int id, startTime;
private Airport departureAirport, arrivalAirport;
private String name;
private AircraftSpecs aircraft;
private double flightSpeed;
private int desiredAltitude, fuel, currentDuration, degrees, currentAltitude;
private PrecisePosition aircraftPosition;
private boolean exitedDepartureAirport, enteredArrivalAirport;
private boolean crashed, landed, reachedDestination, active, fixedAltitude, descending;
public static final int LEFT = 270, RIGHT = 90, UP = 0, DOWN = 180;
private Universe myUniverse;
public Flight(int id, int startTime, int departureAirportID, int arrivalAirportID,
String name, int aircraftType, int flightSpeed, int altitude, int fuel) {
myUniverse = Universe.getInstance();
AirportDatabase airportsDB = myUniverse.getAirportsDatabase();
AircraftSpecsDatabase aircraftsDB = AircraftSpecsDatabase.getInstance();
this.id = id;
this.startTime = startTime;
this.name = name;
this.departureAirport = airportsDB.getAirportByID(departureAirportID);
this.arrivalAirport = airportsDB.getAirportByID(arrivalAirportID);
this.aircraft = aircraftsDB.getAircraftSpecsByType(aircraftType);
this.flightSpeed = ((double) flightSpeed) / 3600;
this.desiredAltitude = altitude;
this.fuel = fuel;
Position dp = departureAirport.getPosition();
this.aircraftPosition = new PrecisePosition(dp.getX(), dp.getY());
this.exitedDepartureAirport = false;
this.enteredArrivalAirport = false;
this.reachedDestination = false;
this.fixedAltitude = false;
this.myUniverse = Universe.getInstance();
this.currentAltitude = myUniverse.getMap().getMapHeightAtLocation(departureAirport.getPrecisePosition());
this.crashed = false;
this.active = false;
this.landed = false;
this.descending = false;
}
private double orthoDistance(PrecisePosition a, PrecisePosition b) {
double x1 = a.getX();
double y1 = a.getY();
double x2 = b.getX();
double y2 = b.getY();
return Math.abs(x1 - x2) + Math.abs(y1 - y2);
}
// Calculated time for aitcraft to arrive when not in
// departure or arrival area
private double timeRemaining() {
double time = 0;
if (!exitedDepartureAirport) {
time += orthoDistance(departureAirport.getGatePoint(), aircraftPosition) / aircraft.getLandingSpeed();
time += orthoDistance(departureAirport.getGatePoint(), arrivalAirport.getGatePoint()) / flightSpeed;
time += CONSTANTS.TILE_SIZE_IN_MILES / 2 / aircraft.getLandingSpeed();
return time;
}
if (enteredArrivalAirport) {
time += orthoDistance(arrivalAirport.getPrecisePosition(), aircraftPosition) / aircraft.getLandingSpeed();
return time;
}
time += orthoDistance(aircraftPosition, arrivalAirport.getGatePoint()) / flightSpeed;
time += CONSTANTS.TILE_SIZE_IN_MILES / 2 / aircraft.getLandingSpeed();
return time;
}
public boolean hasReachedDestination() {
return reachedDestination;
}
public int getStartTime() {
return startTime;
}
public int getCurrentAltitude() {
return currentAltitude;
}
public int getID() {
return id;
}
public void setCrashed() {
if (active) {
myUniverse.increaseCrashes();
myUniverse.addMessage("[Flight ID: " + id + "] CRASHED");
System.out.println("[Flight ID: " + id + "] CRASHED");
crashed = true;
active = false;
}
}
public PrecisePosition getAircraftPosition() {
return aircraftPosition;
}
public int getDegrees() {
return degrees;
}
public boolean isValidFlight() {
if (departureAirport == null || arrivalAirport == null || aircraft == null ) {
return false;
}
if (!arrivalAirport.isOpen() || !departureAirport.isOpen()) {
return false;
}
if (!departureAirport.acceptsAircraft(aircraft) ||
!departureAirport.acceptsAircraft(aircraft)) {
return false;
}
if (flightSpeed > aircraft.getMaxFlightSpeed()) {
return false;
}
if (desiredAltitude > aircraft.getMaxAlt()) {
return false;
}
if (desiredAltitude > aircraft.getMaxAlt()) {
return false;
}
if (fuel > aircraft.getMaxFuelWeight()) {
return false;
}
return true;
}
public void print() {
System.out.println("Flight: " + id + " time:" + startTime + " name:" + name + " alt:" + currentAltitude + "fuel: " + fuel);
System.out.println("Printing Departure Airport:");
departureAirport.print();
System.out.println("Printing Arrival Airport");
arrivalAirport.print();
System.out.println("Printing aircraft");
aircraft.print();
}
public void init() {
active = true;
currentDuration = 0;
navigate(0);
}
public void integrate(double dt) {
reduceFuel(dt);
adjustAltitude(dt);
int terrainAlt = myUniverse.getMap().getMapHeightAtLocation(aircraftPosition);
if (currentAltitude <= terrainAlt &&
exitedDepartureAirport && !enteredArrivalAirport && active ){
myUniverse.addMessage("[Flight ID: " + id + "] CRASHED DUE TO ALTITUDE");
System.out.println("[Flight ID: " + id + "] CRASHED DUE TO ALTITUDE | Terrain alt: " + terrainAlt );
crashed = true;
myUniverse.increaseCrashes();
active = false;
} else if (fuel <= 0 && active) {
myUniverse.addMessage("[Flight ID: " + id + "] RUN OUT OF FUEL");
System.out.println("[Flight ID: " + id + "] RUN OUT OF FUEL");
crashed = true;
myUniverse.increaseCrashes();
active = false;
} else if (!reachedDestination) {
currentDuration += dt * CONSTANTS.TIME_RATIO;
int tolerance = (int) (getCurrentSpeed() * dt + 1);
navigate(tolerance);
updateAircraftPosition(dt);
} else {
myUniverse.addMessage("[Flight ID: " + id + "] LANDED");
System.out.println("[Flight ID: " + id + "] LANDED");
myUniverse.increaseLandings();
landed = true;
active = false;
}
/*
System.out.println("Flight ID: " + id + " | Speed: " + getCurrentSpeed() +
" | Consumtion Rate " + aircraft.getFuelConsumptionRate() + " | Fuel: " + fuel +
" | EST: " + timeRemaining() + " | Altitude: " + currentAltitude);
*/
}
private void reduceFuel(double dt) {
fuel -= aircraft.getFuelConsumptionRate() * dt * getCurrentSpeed();
}
public boolean isActive() {
return active;
}
// Το degrees αναπαριστά τη δεξιόστροφη γωνία σε μοίρες
public void updateAircraftPosition(double dt) {
double speed = getCurrentSpeed();
double speedY = - speed * Math.cos(Math.toRadians(degrees));
double speedX = speed * Math.sin(Math.toRadians(degrees));
double newX = aircraftPosition.getX() + dt * speedX;
double newY = aircraftPosition.getY() + dt * speedY;
// Use tolerance value beacuse position takes discrete values
int tolerance = (int) (getCurrentSpeed() * dt + 1);
if (comparePositions((int) newX, arrivalAirport.getPosition().getX(), tolerance) == 0 &&
comparePositions((int) newY, arrivalAirport.getPosition().getY(), tolerance) == 0 &&
enteredArrivalAirport) {
reachedDestination = true;
}
// Makes exitedDepartureAirport true asap it takes off from airport tile
if (!exitedDepartureAirport && !isInAirportRange(departureAirport)) {
myUniverse.addMessage("[Flight ID: " + id + "] OUT OF Departure Airport Area");
System.out.println("[Flight ID: " + id + "] OUT OF Departure Airport Area");
exitedDepartureAirport = true;
}
if (enteredArrivalAirport) {
}
aircraftPosition.update(newX, newY);
}
private void adjustAltitude(double dt) {
int airportAltitude = myUniverse.getMap().getMapHeightAtLocation(arrivalAirport.getPrecisePosition());
int descendDistance = currentAltitude - airportAltitude;
double timeToDescend = (double) (descendDistance) / aircraft.getAscDescRate();
// System.out.println("Time Remaining: " + timeRemaining() + "DescendTime: " + timeToDescend);
if (desiredAltitude > currentAltitude && !descending) {
int newAlt = (int) (currentAltitude + dt * aircraft.getAscDescRate());
if (newAlt <= desiredAltitude) {
currentAltitude = desiredAltitude;
}
} else if (timeRemaining() <= timeToDescend) {
descending = true;
currentAltitude -= dt * aircraft.getAscDescRate();
}
}
// Returns true if current flight position is in departure airport tile
private boolean isInAirportRange(Airport airport) {
Position airportPosition = airport.getPosition();
int bottomY, topY, leftX, rightX;
bottomY = airportPosition.getY() + CONSTANTS.TILE_SIZE_IN_MILES / 2;
topY = airportPosition.getY() - CONSTANTS.TILE_SIZE_IN_MILES / 2;
leftX = airportPosition.getX() - CONSTANTS.TILE_SIZE_IN_MILES / 2;
rightX = airportPosition.getX() + CONSTANTS.TILE_SIZE_IN_MILES / 2;
return aircraftPosition.getX() >= leftX &&
aircraftPosition.getX() <= rightX &&
aircraftPosition.getY() >= topY && // Things displayed lower in screen have higher Y value
aircraftPosition.getY() <= bottomY;
}
// Return aircraft current speed in miles per second
private double getCurrentSpeed() {
if (enteredArrivalAirport || !exitedDepartureAirport) {
return aircraft.getLandingSpeed();
} else {
return flightSpeed;
}
}
// Determines aircaft rotation
private void navigate(int tolerance) {
if (!exitedDepartureAirport) {
switch (departureAirport.getDirection()) {
case Airport.NORTH :
degrees = UP;
break;
case Airport.EAST :
degrees = RIGHT;
break;
case Airport.SOUTH :
degrees = DOWN;
break;
case Airport.WEST :
degrees = LEFT;
break;
}
} else if (enteredArrivalAirport) {
switch (arrivalAirport.getDirection()) {
case Airport.NORTH :
degrees = DOWN;
break;
case Airport.EAST :
degrees = LEFT;
break;
case Airport.SOUTH :
degrees = UP;
break;
case Airport.WEST :
degrees = RIGHT;
break;
}
} else {
double gatePointX = arrivalAirport.getGatePoint().getX();
double gatePointY = arrivalAirport.getGatePoint().getY();
double aircraftX = aircraftPosition.getX();
double aircraftY = aircraftPosition.getY();
// Move horizontally first, then vertically, towards gate point
if (comparePositions(gatePointX, aircraftX, tolerance) == -1) {
degrees = LEFT;
} else if (comparePositions(gatePointX, aircraftX, tolerance) == 1) {
degrees = RIGHT;
} else {
// Start moving vertically
if (comparePositions(gatePointY, aircraftY, tolerance) == -1) {
degrees = UP;
} else if (comparePositions(gatePointY, aircraftY, tolerance) == 1) {
degrees = DOWN;
} else if (degrees == arrivalAirport.getDegrees()) {
enteredArrivalAirport = true;
myUniverse.addMessage("[Flight ID: " + id + "] ENTERED Destination Airport Area");
System.out.println("[Flight ID: " + id + "] ENTERED Destination Airport Area");
}
}
}
}
// Return > 1 if a "greater than b", 0 if "equal", else -1
private int comparePositions(double a, double b, int tolerance) {
double diff = a - b;
if (diff > tolerance)
return 1;
else if (diff < -tolerance)
return -1;
else return 0;
}
// String format for active flights
public String stringifyActiveFlight() {
String s = "TakeOff Airport: " + departureAirport.getName() + " | Destination Airport: " + arrivalAirport.getName() +
" | Speed: " + getCurrentSpeed() * 3600 + " knots | Altitude: " + currentAltitude + " feets | Remaining Fuel: " + fuel + " kg\n";
return s;
}
// String format for all flights
public String stringify() {
String status;
if (crashed) {
status = "crashed";
} else if (landed) {
status = "landed";
} else if (active) {
status = "active";
} else {
status = "inactive";
}
String s = "TakeOff Airport: " + departureAirport.getName() + " | Destination Airport: " + arrivalAirport.getName() +
" | Status: " + status + " | Aircraft Type : " + aircraft.getName() + "\n";
return s;
}
}