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TicServer.java
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TicServer.java
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import java.io.*;
import java.net.*;
import java.util.concurrent.Semaphore;
public class TicServer {
private static int MAX_CLIENTS = 2;
private static int currentPlayer = 1;
private static Semaphore semaphore = new Semaphore(1); // Semaphore for currentPlayer
private static int[][] board;
public TicServer()
{
initBoard();
initSocket();
}
public static void initBoard()
{
board = new int[3][3];
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
board[i][j] = -1;
}
}
}
public static void initSocket()
{
ServerSocket serverSocket = null;
int port = 1762;
try {
serverSocket = new ServerSocket(port);
System.out.println("Server listening on port " + port);
for (int i = 0; i < MAX_CLIENTS; i++) {
Socket clientSocket = serverSocket.accept();
System.out.println("Waiting for client " + i + " to connect...");
Thread clientThread = new ClientHandlerThread(clientSocket, i, board);
clientThread.start();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (serverSocket != null && !serverSocket.isClosed()) {
serverSocket.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static void sendRestartMessage(PrintWriter out) throws IOException {
out.println(4);
out.flush();
}
public static void main(String[] args) {
new TicServer();
}
public static int getCurrentPlayer() {
return currentPlayer;
}
public static void setCurrentPlayer(int newPlayer) {
currentPlayer = newPlayer;
}
public static Semaphore getSemaphore() {
return semaphore;
}
}
class ClientHandlerThread extends Thread {
private static final int MAX_CLIENTS = 2;
private Socket clientSocket;
private int clientNumber;
private int[][] board;
private static int restartCount = 0;
public ClientHandlerThread(Socket socket, int clientNumber, int[][] board) {
this.clientSocket = socket;
this.clientNumber = clientNumber;
this.board = board;
restartCount = 0;
}
private void resetBoard()
{
// board = new int[3][3];
for(int i = 0; i < 3; i++)
for(int j = 0; j < 3; j++)
board[i][j] = -1;
}
@Override
public void run() {
System.out.println("Client connected: " + clientSocket.getInetAddress() + " " + clientNumber);
try {
PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
out.println(TicServer.getCurrentPlayer());
out.println(clientNumber);
int code = 1;
while (code == 1 || code == 2 || code == 3) {
BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
String codeString = in.readLine();
if (codeString != null && !codeString.isEmpty()) {
code = Integer.parseInt(codeString);
}
if (code == 0) // end server
break;
else if (code == 1) { // setAssigned
int val = Integer.parseInt(in.readLine());
int k = Integer.parseInt(in.readLine());
int l = Integer.parseInt(in.readLine());
Semaphore semaphore = TicServer.getSemaphore();
semaphore.acquire(); // Acquire the semaphore before updating currentPlayer
int currentPlayer = Integer.parseInt(in.readLine());
// System.out.println("Player that played last: " + currentPlayer);
if (currentPlayer == 0) {
TicServer.setCurrentPlayer(1);
} else {
TicServer.setCurrentPlayer(0);
}
semaphore.release(); // Release the semaphore after updating currentPlayer
board[k][l] = val;
} else if (code == 2) { // update
ObjectOutputStream ooStream = new ObjectOutputStream(clientSocket.getOutputStream());
ooStream.writeObject(this.board);
ooStream.flush();
Semaphore semaphore = TicServer.getSemaphore();
semaphore.acquire(); // Acquire the semaphore before reading currentPlayer
int currentPlayer = TicServer.getCurrentPlayer();
// System.out.println("Player to play: " + currentPlayer);
semaphore.release(); // Release the semaphore after reading currentPlayer
out.println(currentPlayer);
out.flush();
} else if (code == 3) {
restartCount++;
System.out.println("Restart Count: " + restartCount);
if(restartCount == MAX_CLIENTS) {
System.out.println("Restarting game...");
resetBoard();
restartCount = 0;
// for (int i = 0; i < 3; i++) {
// for (int j = 0; j < 3; j++) {
// System.out.print(board[i][j] + " ");
// }
// System.out.println();
// }
// TicServer.sendRestartMessage(out);
}
TicServer.setCurrentPlayer(1);
out.println(TicServer.getCurrentPlayer());
}
}
} catch (IOException | InterruptedException e) {
e.printStackTrace();
} finally {
try {
if(clientSocket != null && !clientSocket.isClosed()){
System.out.println("Client " + clientNumber + " disconnected");
clientSocket.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}