add coin flip and turn logic

src/AiPlayer.java

@@ -1,10 +1,8 @@
 import java.util.Random;
 
-public abstract class AiPlayer extends Player {
+public abstract class AiPlayer extends LocalPlayer {
 
-    public AiPlayer(int size) {
+    public AiPlayer() {}
-        super(size);
-    }
     public Point RandomPoint() {
         Random random = new Random(); // Pseudo Random für zufallszahlen
         int posx = random.nextInt(super.board.getSize()); // Generiert 0 - 13

src/AsyncSocket.java

@@ -36,7 +36,7 @@ public class AsyncSocket {
 					String message = this.in.readLine();
 					if (message.length() <= 0) continue;
 
-					// TODO: remove \r\n
+					message = message.strip();
 					this.handler.receive(message);
 				} catch (IOException e) {
 					e.printStackTrace();

src/GameController.java

@@ -2,19 +2,33 @@ import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.net.ServerSocket;
 import java.net.Socket;
+import java.net.SocketTimeoutException;
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 public class GameController {
 
+	// Connection timeout for client sockets in milliseconds
+	public static final int CONNECTION_TIMEOUT = 10 * 1000;
+
+	public static int semesterToBoardSize(int semester) {
+		return semester + 13;
+	}
+	
 	public HashMap<String, Class<? extends OnlinePlayer>> supportedVersions = new HashMap<>(Map.of(
 		"1.1.0", OnlinePlayer_1_1_0.class
 	));
 
-	public void startOnlineGame(Class<? extends LocalPlayer> localPlayerClass, InetSocketAddress address) throws IOException {
+	public void startOnlineGame(Class<? extends LocalPlayer> localPlayerClass, InetSocketAddress address, int size) throws IOException {
 		AsyncSocket clientSocket;
-		if (address.getHostName() == null) {
+
+		boolean localPlayerIsServer = address.getHostName() == null;
+
+		if (localPlayerIsServer) {
 			// SERVER MODE
+
 			ServerSocket serverSocket = new ServerSocket(address.getPort());
 
 			System.out.println("Waiting for client connection...");
@@ -23,10 +37,21 @@ public class GameController {
 
 			serverSocket.close();
 		} else {
-			Socket socket = new Socket();
+			// CLIENT MODE
-			socket.connect(address);
+
+			Socket socket = new Socket();
+
+			try {
+				socket.connect(address, CONNECTION_TIMEOUT);
+
+				clientSocket = new AsyncSocket(socket, null);
+			} catch (SocketTimeoutException e) {
+				e.printStackTrace();
+				throw new RuntimeException("Connection timed out");
+			} finally {
+				socket.close();
+			}
 
-			clientSocket = new AsyncSocket(socket, null);
 		}
 
 		clientSocket.send("VERSION", "Gruppe03 " + String.join(" ", supportedVersions.keySet()));
@@ -34,15 +59,101 @@ public class GameController {
 
 			SocketPackage socketPackage = new SocketPackage(message);
 			if (socketPackage.getName().equals("VERSION")) {
-				// TODO: check version matches - instantiate online player
+
+				List<String> opponentSupportedVersions = socketPackage.splitData();
+
+				String usedVersion = findMostRecentVersion(new ArrayList<String>(supportedVersions.keySet()), opponentSupportedVersions);
+
+				if (usedVersion == null) {
+					throw new RuntimeException("No common versions found");
+				}
+
+				// instantiate players
+				Class<? extends OnlinePlayer> onlinePlayerClass = supportedVersions.get(usedVersion);
+
+				LocalPlayer localPlayer;
+				OnlinePlayer onlinePlayer;
+				try {
+					localPlayer = localPlayerClass.getDeclaredConstructor().newInstance();
+					onlinePlayer = onlinePlayerClass.getDeclaredConstructor().newInstance((Integer)size, clientSocket);
+				} catch (Exception e) {
+					e.printStackTrace();
+					throw new RuntimeException("Unable to instantiate players");
+				}
+
+				localPlayer.isServer = localPlayerIsServer;
+				onlinePlayer.isServer = !localPlayerIsServer;
+
+				startGameWithInstancedPlayers(localPlayer, onlinePlayer);
+
 			} else {
-				// TODO: received invalid package / package out of order
+				throw new RuntimeException("Unexpected Package received before game initialisation");
 			}
 		});
-		// TODO: instantiate local player, set server / client roles
 
 	}
 
+	/**
+	 * finds the largest common version in two lists of version strings
+	 * @return null if no common versions are found
+	 */
+	public String findMostRecentVersion(List<String> versions1, List<String> versions2) {
+		if (versions1 == null || versions2 == null) return null;
+		String largestCommonVersion = null;
+		for (String v1 : versions1) {
+			if (!checkVersionString(v1)) continue;
+
+			for (String v2 : versions2) {
+				if (!checkVersionString(v2)) continue;
+
+				// strings within the lists must be equal
+				// if no largest common version has been found or currently checked version is larger than
+				// previous largest common version, new largest version has been found
+				if (compareVersions(v1, v2) == 0 && (largestCommonVersion == null || compareVersions(v1, largestCommonVersion) >= 1)) {
+					largestCommonVersion = v1;
+					continue;
+				}
+			}
+		}
+		return largestCommonVersion;
+	}
+
+	/**
+	 * compares two version strings
+	 * @return
+	 *  0 if versions are equal
+	 *  1 if version1 is more recent than version2
+	 *  -1 otherwise
+	 */
+	public int compareVersions(String version1, String version2) {
+		if (!checkVersionString(version1) || !checkVersionString(version2)) {
+			throw new IllegalArgumentException("Version is not valid version string");
+		}
+
+		String[] version1Split = version1.split("\\.");
+		String[] version2Split = version2.split("\\.");
+
+		for (int i = 0; i < version1Split.length; i++) {
+			int v1 = Integer.parseInt(version1Split[i]);
+			int v2 = Integer.parseInt(version2Split[i]);
+
+			if (v1 == v2) continue;
+			if (v1 > v2) {
+				return 1;
+			} else {
+				return -1;
+			}
+		}
+		return 0;
+	}
+
+	/**
+	 * checks if a provided string matches the format of a version number
+	 */
+	public boolean checkVersionString(String versionString) {
+		return versionString != null && versionString.matches("\\d+\\.\\d+\\.\\d+");
+	}
+
 	public void startLocalGame(Class<? extends  LocalPlayer> localPlayerClass, Class<? extends AiPlayer> enemyClass, int size) {
 
 		LocalPlayer localPlayer;
@@ -52,10 +163,20 @@ public class GameController {
 			aiPlayer = enemyClass.getDeclaredConstructor().newInstance();
 		} catch (Exception e) {
 			e.printStackTrace();
-			return;
+			throw new RuntimeException("Unable to instantiate players"); 
 		}
-		localPlayer.setEnemy(aiPlayer);
+
-		aiPlayer.setEnemy(localPlayer);
+		localPlayer.createBoard(size);
+		aiPlayer.createBoard(size);
+
+		startGameWithInstancedPlayers(localPlayer, aiPlayer);
+	}
+
+	private void startGameWithInstancedPlayers(LocalPlayer p1, Player p2) {
+		p1.setEnemy(p2);
+		p2.setEnemy(p1);
+
+		// TODO: frontend configuration
 	}
 
 }

src/HitResponse.java

@@ -34,4 +34,8 @@ public class HitResponse {
     public String toString() {
         return this.getPoint().toString() + " " + this.type.ordinal();
     }
+
+    public HitResponseType getType() {
+        return type;
+    }
 }

src/HumanPlayer.java

@@ -1,7 +1,4 @@
 
 public class HumanPlayer extends LocalPlayer {
 
-	public HumanPlayer(int size) {
-		super(size);
-	}
 }

src/LocalPlayer.java

@@ -1,7 +1,11 @@
+import java.util.Random;
+
 public class LocalPlayer extends Player {
 
-    LocalPlayer(int size) {
+    public LocalPlayer(){
-        super(size);
+        super();
+        Random random = new Random();
+        this.myCoin = random.nextBoolean();
     }
 
     @Override
@@ -9,14 +13,46 @@ public class LocalPlayer extends Player {
         HitResponse hitResponse = board.getHitResponsOnPoint(point);
         if (!(hitResponse == null)){
             enemy.receiveHit(hitResponse);
+
         } else {
-            enemy.receiveHit(this.board.hit(point));
+            hitResponse = this.board.hit(point);
+            enemy.receiveHit(hitResponse);
+        }
+
+        switch (hitResponse.getType()) {
+            case HIT, SUNK -> this.myTurn = false;
+            case MISS -> this.myTurn = true;
+            case VICTORY -> System.out.println("Game Over"); //TODO Was halt bei victory passiert ist hier wurder verloheren
         }
     }
 
     @Override
     public synchronized void receiveHit(HitResponse hitResponse) {
         enemy.board.addHits(hitResponse);
+        switch (hitResponse.getType()) {
+            case HIT, SUNK -> this.myTurn = true;
+            case MISS -> this.myTurn = false;
+            case VICTORY -> System.out.println("Win"); // TODO was halt beim victory passier ist hier wurde gewonnen
+        }
+    }
+
+    @Override
+    public synchronized void receiveCoin(boolean coin) {
+        if (!this.haseReceivedCoin) {
+            boolean result = coin ^ this.myCoin; // XOR
+            this.myTurn = result == this.isServer;
+            this.haseReceivedCoin = true;
+        }
+    }
+
+    public void sendCoin() {
+        enemy.receiveCoin(this.myCoin);
+    }
+
+    @Override
+    public void shoot(Point point){
+        this.myTurn = false;
+        enemy.receiveShoot(point);
     }
 	
 }

src/OnlinePlayer.java

@@ -1,9 +1,12 @@
 public abstract class OnlinePlayer extends Player implements AsyncSocketListener{
     protected AsyncSocket socket;
+    protected int wantedBoardSize;
+
+    protected boolean hasReceivedCoinPackage;
 
     public OnlinePlayer(int size, AsyncSocket socket) {
-        super(size);
         this.socket = socket;
+        this.wantedBoardSize = size;
         socket.setHandler(this);
         //TODO Auto-generated constructor stub
     }
@@ -16,4 +19,7 @@ public abstract class OnlinePlayer extends Player implements AsyncSocketListener
     @Override
     public abstract void receiveHit(HitResponse hitResponse);
 
+    @Override
+    public abstract void receiveCoin(boolean coin);
+
 }

src/OnlinePlayer_1_1_0.java

@@ -11,8 +11,34 @@ public class OnlinePlayer_1_1_0 extends OnlinePlayer {
 	public void receive(String message) {
 		SocketPackage p = new SocketPackage(message);
 
-		// TODO: parse package
+		List<String> data = p.splitData();
 		switch (p.getName()) {
+			case "IAM":
+				if (data.size() < 2) break;
+				if (this.board != null) break;
+
+				int semester = Integer.parseInt(data.get(0));
+				String username = p.getData().substring(data.get(0).length() + 1);
+
+				int usedBoardSize = Math.min(GameController.semesterToBoardSize(semester), this.wantedBoardSize);
+				
+				this.setName(username);
+				this.createBoard(usedBoardSize);
+				this.enemy.createBoard(usedBoardSize);
+
+				break;
+
+			// TODO: IAMU
+
+			case "COIN":
+				if(!this.hasReceivedCoinPackage && (p.getData().equals("1") || p.getData().equals("0"))){
+                    this.myCoin = p.getData().equals("1");
+					enemy.receiveCoin(this.myCoin);
+					this.hasReceivedCoinPackage = true;
+				}
+				break;
+
+
 			case "SHOOT":
 				if (Point.isValidSyntax(p.getData())){
 					Point point = new Point(p.getData());
@@ -21,7 +47,6 @@ public class OnlinePlayer_1_1_0 extends OnlinePlayer {
 				break;
 
 			case "HIT":
-				List<String> data = p.splitData();
 				if (data.size()==2){
 					Point point = new Point(data.get(0));
 					int typeIndex = Integer.parseInt(data.get(1));
@@ -50,4 +75,12 @@ public class OnlinePlayer_1_1_0 extends OnlinePlayer {
 	public synchronized void receiveHit(HitResponse hitResponse) {
 		super.socket.send(new SocketPackage("HIT", hitResponse.toString()));
 	}
+
+	@Override
+	public synchronized void receiveCoin(boolean coin) {
+		if (!this.haseReceivedCoin) {
+			super.socket.send(new SocketPackage("COIN", String.valueOf(coin ? 1 : 0)));
+			this.haseReceivedCoin = true;
+		}
+	}
 }

src/Player.java

@@ -1,3 +1,4 @@
+import java.util.Random;
 
 public abstract class Player {
     protected boolean myTurn;
@@ -6,8 +7,18 @@ public abstract class Player {
     protected Player enemy;
     protected String name;
     protected Board board;
+    protected boolean myCoin;
 
-    public Player(int size) {
+    protected boolean sendCoin;
+
+    protected boolean haseReceivedCoin;
+
+    public Player() {
+        this.haseReceivedCoin = false;
+        this.sendCoin = false;
+    }
+
+    public void createBoard(int size) {
         this.board = new Board(size);
     }
 
@@ -15,9 +26,7 @@ public abstract class Player {
 
     public abstract void receiveHit(HitResponse hitResponse);
 
-    public void click(Point point) {
+    public abstract void shoot(Point point);
-
-    }
 
     public void beginTrun() {
 
@@ -26,4 +35,14 @@ public abstract class Player {
     public void setEnemy(Player enemy) {
         this.enemy = enemy;
     }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+    public String getName() {
+        return this.name;
+    }
+
+
+    public abstract void receiveCoin(boolean coin);
 }

src/SpecificAiPlayerEasy.java

@@ -1,7 +1,3 @@
 
 public class SpecificAiPlayerEasy extends AiPlayer{
-	
-	public SpecificAiPlayerEasy(int size) {
-		super(size);
-	}
 }

src/SpecificAiPlayerHard.java

@@ -1,7 +1,3 @@
 
 public class SpecificAiPlayerHard extends AiPlayer{
-	
-	public SpecificAiPlayerHard(int size) {
-		super(size);
-	}
 }

src/SpecificAiPlayerMedium.java

@@ -5,10 +5,6 @@ public class SpecificAiPlayerMedium extends AiPlayer{
 	
  	private List<Point> hitsQueue = new ArrayList<>();
 
-	public SpecificAiPlayerMedium(int size) {
-		super(size);
-	}
-
     @Override
     public void AiShoot() {
         Point nextShot = ComputeNextShot();