src/AiPlayer.java

@@ -8,14 +8,14 @@ public abstract class AiPlayer extends Player {
     }
     public Point RandomPoint() {
         Random random = new Random(); // Pseudo Random für zufallszahlen
-        int posx = random.nextInt(super.board.size); // Generiert 0 - 13
-        int posy = random.nextInt(super.board.size); // 
+        int posx = random.nextInt(super.board.getSize()); // Generiert 0 - 13
+        int posy = random.nextInt(super.board.getSize()); // 
         return new Point(posx,posy);
     }
 
     public void AiSetShips() {
-        for(int i = 0; i < super.board.ships.size(); i++) {  // Interiert durch alle Shiffe
-            while(!super.board.ships.get(i).setPosition(RandomPoint()))
+        for(int i = 0; i < super.board.getShips().size(); i++) {  // Interiert durch alle Shiffe
+            while(!super.board.getShips().get(i).setPosition(RandomPoint(), super.board.getShips(), super.board.getSize())) {}
         }    // Versucht das Aktuelle Shiff zu setzten und wiederholt solange bis es funktioniert
         return;
     }

src/AsyncSocket.java

@@ -0,0 +1,80 @@
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.net.Socket;
+
+public class AsyncSocket {
+	private Socket socket;
+	private Thread checkerThread;
+	private AsyncSocketListener handler;
+	private boolean shouldStop = false;
+
+	private BufferedReader in;
+	private PrintWriter out;
+
+	public AsyncSocket(Socket socket, AsyncSocketListener handler) throws IOException {
+		this.socket = socket;
+
+		this.in = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
+		this.out = new PrintWriter(new OutputStreamWriter(this.socket.getOutputStream()));
+
+		this.handler = handler;
+
+		this.checkerThread = new Thread(() -> {
+			while (!this.shouldStop) {
+				try {
+					Thread.sleep(100);
+				} catch (InterruptedException e) {
+					e.printStackTrace();
+				}
+				try {
+					if (!this.in.ready()) continue;
+					if (this.handler == null) continue;
+
+					String message = this.in.readLine();
+					if (message.length() <= 0) continue;
+
+					// TODO: remove \r\n
+					this.handler.receive(message);
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		});
+		this.checkerThread.start();
+	}
+
+	public void setHandler(AsyncSocketListener handler) {
+		this.handler = handler;
+	}
+
+
+	public void send(SocketPackage socketPackage) {
+		this.sendLine(socketPackage.toString());
+	}
+	public void send(String packageName) {
+		this.send(packageName, "");
+	}
+	public void send(String packageName, String packageContent) {
+		if (packageContent.length() > 0) {
+			packageContent = " " + packageContent;
+		}
+		this.sendLine(packageName + packageContent);
+	}
+
+	public void sendLine(String message) {
+		this.out.print(message + "\r\n");
+	}
+
+	public void close() {
+		this.shouldStop = true;
+		
+		try {
+			this.socket.close();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+}

src/AsyncSocketListener.java

@@ -0,0 +1,3 @@
+public interface AsyncSocketListener {
+	public void receive(String message);
+}

src/Board.java

@@ -68,7 +68,7 @@ public class Board {
 	}
 
 	public int getSize() {
-        return size;
+        return this.size;
     }
 
 }

src/GameController.java

@@ -1,14 +1,59 @@
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.util.HashMap;
+import java.util.Map;
+
 public class GameController {
 	
+	public HashMap<String, Class<? extends OnlinePlayer>> supportedVersions = new HashMap<>(Map.of(
+		"1.1.0", OnlinePlayer_1_1_0.class
+	));
 
-    public void startOnlineGame() {
-        // fuck you Luca and Ole von Florian und nicht von Florian
-    }
+	public void startOnlineGame(Class<? extends LocalPlayer> localPlayerClass, InetSocketAddress address) throws IOException {
+		AsyncSocket clientSocket;
+		if (address.getHostName() == null) {
+			// SERVER MODE
+			ServerSocket serverSocket = new ServerSocket(address.getPort());
 
-    public void startLocalGame(Class<? extends  LocalPlayer> localPlayerClass, Class<? extends AiPlayer> enemyClass, int size) throws InstantiationException, IllegalAccessException {
+			System.out.println("Waiting for client connection...");
 				
-		LocalPlayer localPlayer = localPlayerClass.newInstance();
-		AiPlayer aiPlayer = enemyClass.newInstance();
+			clientSocket = new AsyncSocket(serverSocket.accept(), null);
+
+			serverSocket.close();
+		} else {
+			Socket socket = new Socket();
+			socket.connect(address);
+
+			clientSocket = new AsyncSocket(socket, null);
+		}
+
+		clientSocket.send("VERSION", "Gruppe03 " + String.join(" ", supportedVersions.keySet()));
+		clientSocket.setHandler((message) -> {
+
+			SocketPackage socketPackage = new SocketPackage(message);
+			if (socketPackage.getName().equals("VERSION")) {
+				// TODO: check version matches - instantiate online player
+			} else {
+				// TODO: received invalid package / package out of order
+			}
+		});
+		// TODO: instantiate local player, set server / client roles
+
+	}
+
+	public void startLocalGame(Class<? extends  LocalPlayer> localPlayerClass, Class<? extends AiPlayer> enemyClass, int size) {
+
+		LocalPlayer localPlayer;
+		AiPlayer aiPlayer;
+		try {
+			localPlayer = localPlayerClass.getDeclaredConstructor().newInstance();
+			aiPlayer = enemyClass.getDeclaredConstructor().newInstance();
+		} catch (Exception e) {
+			e.printStackTrace();
+			return;
+		}
 		localPlayer.setEnemy(aiPlayer);
 		aiPlayer.setEnemy(localPlayer);
 	}

src/OnlinePlayer.java

@@ -1,5 +1,12 @@
-import java.net.Socket;
+public abstract class OnlinePlayer extends Player implements AsyncSocketListener{
+    private AsyncSocket socket;
+
+    public OnlinePlayer(int size, AsyncSocket socket) {
+        super(size);
+        this.socket = socket;
+        //TODO Auto-generated constructor stub
+    }
+
+    public abstract void receive(String message);
 
-public abstract class OnlinePlayer extends Player{
-    private Socket socket;
 }

src/OnlinePlayer_1_1_0.java

@@ -0,0 +1,13 @@
+public class OnlinePlayer_1_1_0 extends OnlinePlayer {
+	public OnlinePlayer_1_1_0(int size, AsyncSocket socket) {
+		super(size, socket);
+	}
+
+	@Override
+	public void receive(String message) {
+		SocketPackage p = new SocketPackage(message);
+
+		// TODO: parse package
+	}
+
+}

src/Ship.java

@@ -1,10 +1,11 @@
+
+
 import java.awt.Point;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
-record ShipData (int size, String name){
-}
+record ShipData (int size, String name){}
 
 public class Ship {
 	static List<List<ShipData>> semeterList = Arrays.asList(Arrays.asList(
@@ -56,16 +57,79 @@ public class Ship {
 	public Ship (int size, String name) {
 		this.size = size;
 		this.name = name;
-		this.horizontal = false;
+		this.horizontal = false; //true = von Punkt aus nach rechts; false = von Punkt aus nach unten
 		this.position = null;
 		this.hitsOnMe = 0;
 		this.sunk = false;
 	}
 	
-	public boolean setPosition(Point pos) {
-		//TODO Conte abrfrage ob shif da sein darf
-		this.position = pos;
-		return true;
+	public boolean setPosition(Point pos, List<Ship> shipsList, int boardSize) {
+	    // ueberpruefe boundaries
+	    if (pos.x < 0 || pos.y < 0 || pos.x >= boardSize || pos.y >= boardSize) {
+	        return false;
+	    }
+
+	    // bestimme die Endposition anhand der Ausrichtung
+	    int endX = pos.x;
+	    int endY = pos.y;
+
+	    if (this.horizontal) { // rechts links
+	        endX = pos.x + this.size - 1;
+	        if (endX >= boardSize) {
+	            return false;
+	        }
+	    } else { // oben unten
+	        endY = pos.y + this.size - 1;
+	        if (endY >= boardSize) {
+	            return false;
+	        }
+	    }
+
+	    // Liste an Punkten die das Schiff einnehmen wuerde
+	    List<Point> shipPoints = new ArrayList<>();
+	    for (int i = 0; i < this.size; i++) {
+	        int x = this.horizontal ? pos.x + i : pos.x; //falls horizontal dann pos.x + i ansonsten pos.x
+	        int y = this.horizontal ? pos.y : pos.y + i;
+	        shipPoints.add(new Point(x, y));
+	    }
+
+	    // ueberlappen mit anderen Schiffen pruefen
+	    for (Ship otherShip : shipsList) {
+	        // eigenes Schiff ueberspringen
+	        if (otherShip == this) {
+	            continue;
+	        }
+	        // ueberspringe falls noch nicht gesetzt
+	        if (otherShip.position == null) {
+	            continue;
+	        }
+	        // Punkte die das andere Schiff besetzt
+	        List<Point> otherShipPoints = otherShip.getOccupiedPoints();
+	        // ueberlappen checken
+	        for (Point p : shipPoints) {
+	            if (otherShipPoints.contains(p)) {
+	                // ueberlappen entdeckt
+	                return false;
+	            }
+	        }
+	    }
+
+	    // kein ueberlappen also setze das Schiff
+	    this.position = pos;
+	    return true;
+	}
+
+	public List<Point> getOccupiedPoints() {
+	    List<Point> points = new ArrayList<>();
+	    if (this.position == null) {
+	        return points;
+	    }
+	    for (int i = 0; i < this.size; i++) {
+	        int x = this.horizontal ? this.position.x + i : this.position.x;
+	        int y = this.horizontal ? this.position.y : this.position.y + i;
+	        points.add(new Point(x, y));
+	    }
+	    return points;
 	}
 
 	public Point getPosition() {

src/SocketPackage.java

@@ -0,0 +1,57 @@
+import java.util.Arrays;
+import java.util.List;
+public class SocketPackage {
+
+	private String name = "";
+	private String data = "";
+
+	public SocketPackage(String name, String data) {
+		this.setName(name);
+		this.setData(data);
+	}
+	public SocketPackage() {
+		this("","");
+	}
+	public SocketPackage(String message) {
+		if (message.length() <= 0) {
+			throw new IllegalArgumentException("Socket message cannot be empty.");
+		}
+		String[] components = message.split(" ");
+		this.setName(components[0]);
+		if (components.length > 1) {
+			this.setData(message.substring(components[0].length() + 1));
+		} else {
+			this.setData("");
+		}
+	}
+
+	public void setName(String name) {
+		if (name == null) name = "";
+		this.name = name.toUpperCase();
+	}
+
+	public void setData(String data) {
+		if (data == null) data = "";
+		this.data = data;
+	}
+
+	public String getName() {
+		return this.name;
+	}
+
+	public String getData() {
+		return this.data;
+	}
+
+	public String toString() {
+		if (this.data == null || this.data.length() == 0) {
+			return this.name;
+		} else {
+			return this.name + " " + this.data;
+		}
+	}
+
+	public List<String> splitData() {
+		return Arrays.asList(this.data.split(" "));
+	}
+}

src/SpecificAiPlayerEasy.java

@@ -1,7 +1,7 @@
 
-public class SpecificAiPlayer1 extends AiPlayer{
+public class SpecificAiPlayerEasy extends AiPlayer{
 	
-	public SpecificAiPlayer1(int size) {
+	public SpecificAiPlayerEasy(int size) {
 		super(size);
 	}
 }

src/SpecificAiPlayerHard.java

@@ -1,7 +1,7 @@
 
-public class SpecificAiPlayer1 extends AiPlayer{
+public class SpecificAiPlayerHard extends AiPlayer{
 	
-	public SpecificAiPlayer1(int size) {
+	public SpecificAiPlayerHard(int size) {
 		super(size);
 	}
 }

src/SpecificAiPlayerMedium.java

@@ -1,3 +1,6 @@
+import java.util.ArrayList;
+import java.util.List;
+import java.awt.Point;
 
 public class SpecificAiPlayerMedium extends AiPlayer{
 	
@@ -13,7 +16,7 @@ public class SpecificAiPlayerMedium extends AiPlayer{
         // Shoot at the enemy and receive the hit response
         enemy.receiveShoot(nextShot);
 
-		HitResponse hitResponse = enemy.board.getHitResponsOnPoint(nextShot)
+		HitResponse hitResponse = enemy.board.getHitResponsOnPoint(nextShot);
         // If it's a hit or sunk, add adjacent cells to the hitsQueue
         if (hitResponse.getHitResponse() == HitResponseType.HIT) {
             addAdjacentPoints(nextShot);
@@ -58,6 +61,11 @@ public class SpecificAiPlayerMedium extends AiPlayer{
         }
     }
 
+    private boolean alreadyShot(Point p) {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'alreadyShot'");
+    }
+
     private boolean isValidPoint(Point point) {
         return point.x >= 0 && point.x < board.getSize() &&
                point.y >= 0 && point.y < board.getSize();