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COSC-3P91-Assignments
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4 changed files with 57 additions and 194 deletions
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58
Assignment 4/src/ca/cosc3p91/a4/game/GameEngine.java
View File

@ -8,7 +8,7 @@ import ca.cosc3p91.a4.userinterface.GameDisplay;
import ca.cosc3p91.a4.util.ChallengeAdapter;
import java.beans.XMLEncoder;
import java.io.BufferedOutputStream;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Random;
@ -21,19 +21,25 @@ public class GameEngine implements Runnable {
private Player player;
boolean running = true;
public boolean execFlag = true;
private float pillageFactor = 0.5f;
private int currentTime;
private final InputStream input;
private final OutputStream output;
public ObjectOutputStream mapOutput;
private final Random random = new Random(System.nanoTime());
public Map map;
public GameDisplay view;
public GameEngine() {
public GameEngine(InputStream commandStream, OutputStream outputBuf) {
player = new Player();
map = generateInitialMap();
input = commandStream;
output = outputBuf;
}
public void attackVillage(Map map) {
@ -149,21 +155,23 @@ public class GameEngine implements Runnable {
public void run() {
String in;
view = new GameDisplay();
view = new GameDisplay(input);
view.printVillageState(this.map,"Current Village State");
view.printGameMenu();
Map exploringMap = null;
boolean deleteMyHeart = true;
while (running) {
execFlag = true;
for (Building b : this.map.contains){
if ((b instanceof ResourceBuilding)) {
((ResourceBuilding) b).update(this.map.getTownHall());
}
}
try {
if ((in = view.nextInput()) != null) {
if ((in = view.nextInput()) != null && !in.isEmpty()) {
String[] args = in.split(" ");
if (in.charAt(0) == '0') continue;
view.printLastInput();
// reset the map if they aren't exploring
@ -172,52 +180,53 @@ public class GameEngine implements Runnable {
switch (in.charAt(0)) {
case '1':
if (args.length < 2) {
System.err.println("Args must include type!");
output.write("Args must include type".getBytes());
} else {
BuildingFactory bfactory = new BuildingFactory();
Building type = bfactory.getBuilding(args[1]);
if (type == null)
System.err.println("Args are not a valid building!");
else if (this.map.build(new Tile(), type) ) {
System.out.println(type.getClass().getSimpleName()+" successfully built\n");
} else
System.out.println("Missing resources to build "+type.getClass().getSimpleName());
if (type == null) {
output.write("Args are not a valid building!".getBytes());
} else if (this.map.build(new Tile(), type) ) {
output.write((type.getClass().getSimpleName()+" successfully built\n").getBytes());
} else {
output.write(("Missing resources to build "+type.getClass().getSimpleName()).getBytes());
}
}
break;
case '2':
if (args.length < 2) {
System.err.println("Args must include type!");
output.write("Args must include type".getBytes());
} else {
InhabitantFactory ifactory = new InhabitantFactory();
Inhabitant type = ifactory.getInhabitant(args[1]);
if (type == null)
System.err.println("Args are not a valid inhabitant!");
else if (this.map.train(type) ) {
System.out.println("successfully trained a(n) "+type.getClass().getSimpleName());
} else System.out.println("Missing gold to train "+type.getClass().getSimpleName());
if (type == null) {
output.write("Args are not a valid inhabitant!".getBytes());
} else if (this.map.train(type) ) {
output.write(("successfully trained a(n) "+type.getClass().getSimpleName()).getBytes());
} else output.write(("Missing resources to train "+type.getClass().getSimpleName()).getBytes());
}
break;
case '3':
if (args.length < 2) {
System.err.println("Args must include type!");
output.write("Args must include type".getBytes());
} else {
int unitIndex = Integer.parseInt(args[1].substring(1));
if (unitIndex < 0) {
System.err.println("Invalid Index");
output.write("Invalid Index".getBytes());
break;
}
if (args[1].contains("i") && (unitIndex < map.inhabitants.size()) ) {
if ( map.upgradeInhabitant(unitIndex) ) {
System.out.println("successfully upgraded a(n) "+map.inhabitants.get(unitIndex).getClass().getSimpleName());
} else System.out.println("Missing Resources to upgrade "+map.inhabitants.get(unitIndex).getClass().getSimpleName());
output.write(("successfully upgraded a(n) "+map.inhabitants.get(unitIndex).getClass().getSimpleName()).getBytes());
} else output.write(("Missing Resources to upgrade "+map.inhabitants.get(unitIndex).getClass().getSimpleName()).getBytes());
} else if (args[1].contains("b") && (unitIndex < map.contains.size()) ) {
if ( map.upgradeBuilding(unitIndex) ) {
System.out.println("successfully upgraded a(n) "+map.contains.get(unitIndex).getClass().getSimpleName());
} else System.out.println("Missing Resources to upgrade "+map.contains.get(unitIndex).getClass().getSimpleName());
output.write(("successfully upgraded a(n) "+map.contains.get(unitIndex).getClass().getSimpleName()).getBytes());
} else output.write(("Missing Resources to upgrade "+map.contains.get(unitIndex).getClass().getSimpleName()).getBytes());
} else {
System.err.println("Args are not a valid unit!");
output.write("Args is not a valid unit".getBytes());
}
}
break;
@ -248,6 +257,7 @@ public class GameEngine implements Runnable {
}
if (deleteMyHeart)
exploringMap = null;
execFlag = false;
}
save("test.xml", this.map);
}

9
Assignment 4/src/ca/cosc3p91/a4/util/PacketTable.java
View File

@ -2,15 +2,6 @@ package ca.cosc3p91.a4.util;
public class PacketTable {
// packetID -> byte defined in this file
// clientID -> long
// messageID -> long
// packetID, clientID (0 if connecting to server)
public static final byte CONNECT = 0x1;
// packetID, clientID
public static final byte DISCONNECT = 0x2;
// packetID, clientID, messageID
public static final byte ACK = 0x3;
}

179
Assignment 4/src/ca/cosc3p91/a4/util/Server.java
View File

@ -4,170 +4,35 @@ import ca.cosc3p91.a4.game.GameEngine;
import java.io.*;
import java.net.*;
import java.rmi.ServerException;
import java.util.*;
import java.util.concurrent.locks.ReentrantLock;
public class Server implements Runnable {
public class Server {
public static final int SERVER_PORT = 42069;
public static final int PACKET_SIZE = 4096;
public static final long MAX_PACKET_ACK_TIME_SECONDS = 30;
private final HashMap<Long, ConnectedClient> clients = new HashMap<>();
private long clientAssignmentID = 0;
private long lastMessageID = 0;
private final DatagramSocket socket;
private final Thread ioThread;
private GameEngine mainEngine;
private volatile boolean running = true;
public Server() throws SocketException {
socket = new DatagramSocket(SERVER_PORT);
ioThread = new Thread(this);
ioThread.start();
}
public void run(){
while (running) {
byte[] receiveData = new byte[PACKET_SIZE];
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
try {
// BLOCKING!
socket.receive(receivePacket);
DataInputStream stream = new DataInputStream(new ByteArrayInputStream(receivePacket.getData()));
byte packetID = stream.readByte();
long clientID = stream.readLong();
ConnectedClient client = clients.get(clientID);
if (packetID == PacketTable.CONNECT){
clients.put(++clientAssignmentID, new ConnectedClient(socket, clientID, receivePacket.getAddress(), receivePacket.getPort()));
} else if (packetID == PacketTable.DISCONNECT){
if (client == null)
throw new ServerException("Client disconnected with invalid client id! (" + clientID + ")");
client.halt();
clients.put(clientID, null);
} else {
if (client == null)
throw new ServerException("Client message with invalid client id! (" + clientID + ")");
client.handleRequest(new ConnectedClient.ServerRequest(packetID, stream));
}
} catch (IOException | InterruptedException e) {
throw new RuntimeException(e);
}
}
}
public void halt() throws InterruptedException {
running = false;
ioThread.join();
}
public static ByteArrayInputStream stream_in;
public static ByteArrayOutputStream stream_out;
public static GameEngine mainEngine;
public static void main(String[] args) throws IOException, InterruptedException {
new Server();
DatagramSocket serverSocket = new DatagramSocket(SERVER_PORT);
byte[] receiveData = new byte[1284];
byte[] sendData = new byte[1284];
stream_in = new ByteArrayInputStream(receiveData);
stream_out = new ByteArrayOutputStream(1284);
new Thread(mainEngine = new GameEngine(stream_in,stream_out)).start();
while(true) {
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
serverSocket.receive(receivePacket);
stream_in.reset();
Thread.sleep(500);
InetAddress IPAddress = receivePacket.getAddress();
int port = receivePacket.getPort();
sendData = stream_out.toByteArray();
stream_out.reset();
DatagramPacket sendPacket =
new DatagramPacket(sendData, sendData.length, IPAddress, port);
serverSocket.send(sendPacket);
}
private static class ConnectedClient implements Runnable {
private final InetAddress address;
private final int port;
private final ArrayList<ServerRequest> requests = new ArrayList<>();
private final Queue<ServerRequest> pendingRequests = new PriorityQueue<>();
// could use read/write lock for some of this, as certain operations, mostly timeout check, won't modify data.
private final ReentrantLock requestLock = new ReentrantLock();
private final DatagramSocket socket;
private final long clientID;
private volatile boolean running = true;
private final Thread processingThread;
public ConnectedClient(DatagramSocket socket, long clientID, InetAddress address, int port){
this.socket = socket;
this.address = address;
this.port = port;
this.clientID = clientID;
processingThread = new Thread(this);
processingThread.start();
}
public void handleRequest(ServerRequest request){
requestLock.lock();
pendingRequests.add(request);
requestLock.unlock();
}
private void processRequest(ServerRequest request){
try {
switch (request.getID()){
case PacketTable.ACK:
long messageID = request.getDataStream().readLong();
break;
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public void run(){
while (running){
requestLock.lock();
while (pendingRequests.size() > 0) {
ServerRequest request = pendingRequests.remove();
processRequest(request);
requests.add(request);
}
requestLock.unlock();
requests.removeIf(ServerRequest::isAck);
for (ServerRequest request : requests){
// TODO:
if (request.getTimeSinceReceived().get() > MAX_PACKET_ACK_TIME_SECONDS)
System.out.println("A packet hasn't received a ack, it might have been lost!");
}
}
}
public void halt() throws InterruptedException {
running = false;
processingThread.join();
}
private static class ServerRequest {
private final byte id;
private final Time receiveTime;
private final DataInputStream receive;
private boolean ack = false;
public ServerRequest(byte id, DataInputStream receive){
this.id = id;
this.receive = receive;
receiveTime = Time.getTime();
}
public byte getID(){
return id;
}
public void acknowledged(){
this.ack = true;
}
public boolean isAck(){
return this.ack;
}
public DataInputStream getDataStream(){
return receive;
}
public Time getTimeSinceReceived(){
return Time.getTime().difference(receiveTime);
}
}
}
}

3
Assignment 4/src/ca/cosc3p91/a4/util/Time.java
View File

@ -47,7 +47,4 @@ public class Time implements Serializable {
return new Time(System.currentTimeMillis() / 1000);
}
public Time difference(Time right) {
return new Time(this.timeSeconds - right.timeSeconds);
}
}