Refactored TicTacToe game to be able to run multiple instances on a server

server.properties

@@ -1,16 +0,0 @@
-#nl.hanze.newgameserver.GlobalSettings
-#Mon Sep 15 21:02:16 CEST 2025
-challenges=true
-chat=true
-debugTournament=false
-gameserver.homepagetext=Welcome to the web interface of the game server.
-gameserver.port=7789
-gameserver.tournament.timebetweengames=5
-gameserver.turntimelimit=10
-gameserver.welcomemessage=New Game Server [Aplha version]\n(C) Copyright 2023 Hanzehogeschool Groningen
-jsonwebtokensecret=SuperGeheimeJWTSecretKeyOmTokensteCreaten
-logging.file.name=./gameserver.log
-passwordhash=$2a$10$Yze2Ddu931DdzLQ3J08qGexwsp7dK2cJHFuA8YrZWS2RNyM5IkEeS
-server.port=8081
-shuffleWhiteBlack=true
-subscribe=true

src/main/java/org/toop/eventbus/Events.java

@@ -90,6 +90,8 @@ public class Events implements IEvents {
 
         public record ServerStarted(String uuid, String port) {}
 
+        public record StartTicTacToeGame(String id, String port) {}
+
         /**
          *
          * Triggers starting a server connection.

src/main/java/org/toop/server/backend/ServerManager.java

@@ -29,6 +29,7 @@ public class ServerManager {
         GlobalEventBus.subscribeAndRegister(Events.ServerEvents.StartServerRequest.class, this::handleStartServerRequest);
         GlobalEventBus.subscribeAndRegister(Events.ServerEvents.StartServer.class, this::handleStartServer);
         GlobalEventBus.subscribeAndRegister(Events.ServerEvents.ForceCloseAllServers.class, _ -> shutdownAll());
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.StartTicTacToeGame.class, this::handleStartTicTacToeGameOnAServer);
     }
 
     private String startServer(String port) {
@@ -56,6 +57,20 @@ public class ServerManager {
         ));
     }
 
+    private void handleStartTicTacToeGameOnAServer(Events.ServerEvents.StartTicTacToeGame event) {
+        TcpServer serverThing = this.servers.get(event.id());
+        if (serverThing != null) {
+            try {
+                serverThing.runGame();
+                logger.info("Started game on server {}", event.id());
+            }
+            catch (Exception e) {
+                logger.info("Could not start game on server {}", event.id());
+            }
+        }
+
+    }
+
     private void getAllServers(Events.ServerEvents.RequestsAllServers request) {
         ArrayList<TcpServer> a = new ArrayList<>(this.servers.values());
         request.future().complete(a.toString());

src/main/java/org/toop/server/backend/TcpServer.java

@@ -5,7 +5,6 @@ import org.apache.logging.log4j.Logger;
 
 import java.io.*;
 import java.net.*;
-import java.sql.Time;
 import java.util.concurrent.*;
 
 import static java.lang.Thread.sleep;
@@ -49,6 +48,16 @@ public class TcpServer implements Runnable {
         }
     }
 
+    public void runGame() {}
+
+    protected String sendServerMessage() {
+        try { return sendQueue.poll(this.WAIT_TIME, TimeUnit.MILLISECONDS); }
+        catch (InterruptedException e) {
+            logger.error("Interrupted", e);
+            return null;
+        }
+    }
+
     protected String getNewestCommand() {
         try { return receivedQueue.poll(this.WAIT_TIME, TimeUnit.MILLISECONDS); }
         catch (InterruptedException e) {

src/main/java/org/toop/server/backend/tictactoe/TicTacToeServer.java

@@ -6,17 +6,18 @@ import org.toop.server.backend.TcpServer;
 import java.io.IOException;
 import java.io.ObjectStreamException;
 import java.net.Socket;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Objects;
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
 
 public class TicTacToeServer extends TcpServer {
 
-    private TicTacToe game;
+    /**
+     * Map of gameId -> Game instances
+     */
+    private final Map<String, TicTacToe> games = new ConcurrentHashMap<>();
 
-    public TicTacToeServer(int port, String playerA, String playerB) throws IOException {
+    public TicTacToeServer(int port) throws IOException {
         super(port);
-        this.game = new TicTacToe(playerA, playerB);
     }
 
     @Override
@@ -29,13 +30,32 @@ public class TicTacToeServer extends TcpServer {
                 logger.info("Connected to client: {}", clientSocket.getInetAddress());
 
                 new Thread(() -> this.startWorkers(clientSocket)).start();
-                new Thread(() -> this.gameThread()).start();
             }
         } catch (IOException e) {
             e.printStackTrace();
         }
     }
 
+    public void newGame(String playerA, String playerB) {
+        String gameId = UUID.randomUUID().toString();
+        TicTacToe game = new TicTacToe(playerA, playerB);
+        this.games.put(gameId, game);
+        logger.info("Created a new game: {}. {} vs {}", gameId, playerA, playerB);
+    }
+
+    public void runGame(String gameId) {
+        TicTacToe game = this.games.get(gameId);
+        game.run();
+        logger.info("Running game: {}, players: {}", gameId, game.getPlayers());
+    }
+
+    public void endGame(String gameId) {
+        TicTacToe game = this.games.get(gameId);
+        this.games.remove(gameId);
+        logger.info("Removed game: {}", gameId);
+        // TODO: Multithreading, close game in a graceful matter, etc.
+    }
+
     private static class ParsedCommand {
         public TicTacToeServerCommand command;
         public ArrayList<Object> arguments;
@@ -121,17 +141,4 @@ public class TicTacToeServer extends TcpServer {
         return null;
     }
 
-    private void gameThread() {
-
-
-        while (true) {
-            String command = getNewestCommand();
-            command = this.parseCommand(command).toString();
-            if (command == null) { continue; }
-
-            // TODO: Game
-        }
-
-    }
-
 }

src/main/java/org/toop/server/backend/tictactoe/game/TicTacToe.java

@@ -4,10 +4,12 @@ import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.toop.Main;
 
-public class TicTacToe extends GameBase {
-	public int moveCount;
+public class TicTacToe extends GameBase implements Runnable {
     private static final Logger logger = LogManager.getLogger(TicTacToe.class);
 
+    public int moveCount;
+    public Thread gameThread;
+
 	public TicTacToe(String player1, String player2) {
 		super(3); // 3x3 Grid
 		players = new Player[2];
@@ -17,6 +19,23 @@ public class TicTacToe extends GameBase {
 		moveCount = 0;
 	}
 
+    @Override
+    public void run() {
+        this.gameThread = new Thread(this::gameThread);
+        this.gameThread.start();
+    }
+
+    private void gameThread() {
+        while (true) {
+            String command = getNewestCommand();
+            command = this.parseCommand(command).toString();
+            if (command == null) { continue; }
+
+            // TODO: Game
+        }
+
+    }
+
 	@Override
 	public boolean validateMove(int index) {
 		if (index < 0 || index > (size * size - 1)) {