KLienterna ansluter men Piece är inte serialiserbar eftersom BufferedImage inte är det

src/main/java/com/billenius/schack/Move.java

@@ -1,10 +1,11 @@
 package com.billenius.schack;
 
 import java.awt.Point;
+import java.io.Serializable;
 
 import com.billenius.schack.pieces.Piece;
 
-public class Move {
+public class Move implements Serializable {
     public Piece movedPiece;
     public Point from;
     public Point to;

src/main/java/com/billenius/schack/Schack.java

@@ -1,5 +1,6 @@
 package com.billenius.schack;
 
+import java.awt.BorderLayout;
 import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.HeadlessException;
@@ -20,10 +21,10 @@ import javax.swing.JPanel;
 import javax.swing.JScrollPane;
 import javax.swing.JSplitPane;
 import javax.swing.UIManager;
-import java.awt.BorderLayout;
 
-import com.billenius.schack.Move;
+import com.billenius.schack.boards.Board;
-import com.billenius.schack.PieceRenderer;
+import com.billenius.schack.boards.NetworkBoard;
+import com.billenius.schack.boards.SameBoard;
 import com.formdev.flatlaf.FlatLightLaf;
 
 /**
@@ -45,15 +46,30 @@ public class Schack {
         } catch (Exception cantGetSystemTheme) {
         }
 
+        String[] options = { "On the same screen", "Over the internet" };
+        int choosenTransformations = JOptionPane.showOptionDialog(null,
+                "How do you want to connect with your opponent",
+                "Schack: Selection",
+                JOptionPane.DEFAULT_OPTION,
+                JOptionPane.INFORMATION_MESSAGE,
+                null,
+                options,
+                options[0]);
+
+        DefaultListModel<Move> listModel = new DefaultListModel<>();
+        final Board board;
+        if (choosenTransformations == 0)
+            board = new SameBoard(listModel);
+        else
+            board = new NetworkBoard(listModel);
+
         frame = new JFrame();
         frame.setTitle("Schack");
         frame.setAlwaysOnTop(false);
         frame.setResizable(true);
 
-        DefaultListModel<Move> listModel = new DefaultListModel<>();
-
         // Might throw an IOException if the icon of the Pieces isn't embedded correctly
-        final Board board = new Board(listModel);
+        // final Board board = new BlistModeloard(listModel);
 
         // Logger
         final JList<Move> jlist = new JList<>(listModel);

src/main/java/com/billenius/schack/boards/Board.java

@@ -1,4 +1,4 @@
-package com.billenius.schack;
+package com.billenius.schack.boards;
 
 import java.awt.Color;
 import java.awt.Dimension;
@@ -12,9 +12,10 @@ import java.util.ArrayList;
 import java.util.List;
 
 import javax.swing.DefaultListModel;
-import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 
+import com.billenius.schack.Move;
+import com.billenius.schack.SchackState;
 import com.billenius.schack.pieces.Bishop;
 import com.billenius.schack.pieces.Horse;
 import com.billenius.schack.pieces.King;
@@ -23,15 +24,15 @@ import com.billenius.schack.pieces.Piece;
 import com.billenius.schack.pieces.Queen;
 import com.billenius.schack.pieces.Rook;
 
-public class Board extends JPanel implements MouseListener {
+public abstract class Board extends JPanel implements MouseListener {
 
     public static final int SIZE_OF_TILE = 100;
-    private Piece[][] pieces = new Piece[8][8];
+    protected Piece[][] pieces = new Piece[8][8];
-    private List<Point> validMovesToDraw = new ArrayList<>();
+    protected List<Point> validMovesToDraw = new ArrayList<>();
     private Point previouslyClickedPoint = new Point();
     private final Color moveableColor = new Color(255, 191, 0);
     short turnCount = 0;
-    private boolean whitesTurn = true;
+    protected boolean whitesTurn = true;
     private DefaultListModel<Move> moveList;
 
     public Board(DefaultListModel<Move> listModel) throws IOException {
@@ -115,33 +116,7 @@ public class Board extends JPanel implements MouseListener {
             }
     }
 
-    private void makeMove(Move move) {
+    protected abstract void makeMove(Move move);
-        move.movedPiece.move(pieces, move.to);
-        turnCount++;
-        whitesTurn = !whitesTurn;
-
-        SchackState state = getSchackState();
-        switch (state) {
-            case SCHACK:
-                JOptionPane.showMessageDialog(this, "Du står i schack");
-                break;
-            case SCHACKMATT:
-            case PATT:
-                String stateStr = state.toString();
-                String msg = stateStr.charAt(0) + stateStr.substring(1, stateStr.length()).toLowerCase();
-                int choice = JOptionPane.showConfirmDialog(this, msg + "\nVill du starta om?");
-
-                if (choice == JOptionPane.YES_OPTION)
-                    try {
-                        restartGame();
-                    } catch (IOException ex) {
-                    }
-
-                break;
-            default:
-        }
-
-    }
 
     @Override
     public void mousePressed(MouseEvent mouseEvent) {
@@ -168,7 +143,7 @@ public class Board extends JPanel implements MouseListener {
         // Om vi inte redan har valt en pjäs klickar vi på en pjäs
         if (!validMovesToDraw.contains(clickedCoordinate)) {
             Piece selectedPiece = pieces[clickedCoordinate.x][clickedCoordinate.y];
-
+            toDoIfNoPreviousPieceSelected(selectedPiece);
             if (selectedPiece != null && selectedPiece.isWhite() == whitesTurn)
                 validMovesToDraw.addAll(selectedPiece.validMoves(pieces, true));
             else
@@ -180,12 +155,14 @@ public class Board extends JPanel implements MouseListener {
         getParent().repaint();
     }
 
+    protected abstract void toDoIfNoPreviousPieceSelected(Piece selectedPiece);
+
     /**
      * Få status över brädet
      *
      * @return SCHACK, SCHACKMATT, PATT, NORMAL
      */
-    private SchackState getSchackState() {
+    protected SchackState getSchackState() {
         List<Point> allValidMoves = getMoves(whitesTurn);
         List<Point> opposingAttacks = getAttacks(!whitesTurn);
         boolean weCanMove = !allValidMoves.isEmpty();

src/main/java/com/billenius/schack/boards/NetworkBoard.java

@@ -0,0 +1,129 @@
+package com.billenius.schack.boards;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.net.Inet4Address;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.util.Random;
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.awt.Font;
+
+import javax.swing.DefaultListModel;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+
+import com.billenius.schack.Move;
+import com.billenius.schack.SchackState;
+import com.billenius.schack.pieces.Piece;
+
+public final class NetworkBoard extends Board {
+    private final Socket socket;
+    private ServerSocket serverSocket = null;
+    private final ObjectInputStream inputStream;
+    private final ObjectOutputStream outputStream;
+
+    private Boolean myColor = null;
+
+    public NetworkBoard(DefaultListModel<Move> listModel) throws IOException {
+        super(listModel);
+        String[] options = { "Opponent connects to me", "I'am connecting to the opponent" };
+        int choosenOption = JOptionPane.showOptionDialog(null,
+                "Are you going to connect to the opponent or the reverse?",
+                "Schack: Networking",
+                JOptionPane.DEFAULT_OPTION,
+                JOptionPane.INFORMATION_MESSAGE,
+                null,
+                options,
+                options[0]);
+
+        if (choosenOption == 0) {
+            String ip = Inet4Address.getLocalHost().toString();
+
+            final JFrame frame = new JFrame("Schack: Networking");
+            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+            JPanel panel = new JPanel(new BorderLayout());
+            panel.setPreferredSize(new Dimension(200, 200));
+
+            JLabel loading = new JLabel(
+                    "Waiting for opponent to connect...\nYour ip is " + ip + " Listening on port 1339");
+            loading.setFont(new Font("Cantarell", Font.PLAIN, 24));
+            loading.setHorizontalAlignment(JLabel.CENTER);
+
+            panel.add(loading, BorderLayout.CENTER);
+            frame.add(panel);
+            frame.pack();
+            frame.setVisible(true);
+            serverSocket = new ServerSocket(1339);
+            this.socket = serverSocket.accept();
+            // myColor = new Random().nextBoolean();
+            myColor = true;
+            frame.setVisible(false);
+
+            // Get input/output stream
+            System.out.println("Getting inputstream");
+            inputStream = new ObjectInputStream(socket.getInputStream());
+            System.out.println("Getting outputstream");
+            outputStream = new ObjectOutputStream(socket.getOutputStream());
+        } else {
+            String ip = JOptionPane.showInputDialog(null,
+                    "What's the IP of your opponent?",
+                    "Schack: Networking",
+                    JOptionPane.QUESTION_MESSAGE);
+            this.socket = new Socket(ip, 1339);
+            myColor = false;
+
+            // Get input/output stream
+            System.out.println("Getting outputstream");
+            outputStream = new ObjectOutputStream(socket.getOutputStream());
+            System.out.println("Getting inputstream");
+            inputStream = new ObjectInputStream(socket.getInputStream());
+        }
+    }
+
+    @Override
+    protected void makeMove(Move move) {
+        try {
+            move.movedPiece.move(pieces, move.to);
+            outputStream.writeObject(move);
+
+            SchackState state = getSchackState();
+            switch (state) {
+                case SCHACK:
+                    JOptionPane.showMessageDialog(this, "Du står i schack");
+                    break;
+                case SCHACKMATT:
+                case PATT:
+                    String stateStr = state.toString();
+                    String msg = stateStr.charAt(0) + stateStr.substring(1, stateStr.length()).toLowerCase();
+                    int choice = JOptionPane.showConfirmDialog(this, msg + "\nVill du starta om?");
+
+                    if (choice == JOptionPane.YES_OPTION)
+                        try {
+                            restartGame();
+                        } catch (IOException ex) {
+                        }
+
+                    break;
+                default:
+            }
+
+            move = (Move) inputStream.readObject();
+            move.movedPiece.move(pieces, move.to);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    @Override
+    protected void toDoIfNoPreviousPieceSelected(Piece selectedPiece) {
+        if (selectedPiece != null && selectedPiece.isWhite() == myColor)
+            validMovesToDraw.addAll(selectedPiece.validMoves(pieces, true));
+    }
+
+}

src/main/java/com/billenius/schack/boards/SameBoard.java

@@ -0,0 +1,56 @@
+package com.billenius.schack.boards;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+import javax.swing.DefaultListModel;
+import javax.swing.JOptionPane;
+
+import com.billenius.schack.Move;
+import com.billenius.schack.SchackState;
+import com.billenius.schack.pieces.Piece;
+
+public final class SameBoard extends Board {
+
+    public SameBoard(DefaultListModel<Move> listModel) throws IOException {
+        super(listModel);
+    }
+
+    @Override
+    protected void makeMove(Move move)  {
+        move.movedPiece.move(pieces, move.to);
+        turnCount++;
+        whitesTurn = !whitesTurn;
+
+        SchackState state = getSchackState();
+        switch (state) {
+            case SCHACK:
+                JOptionPane.showMessageDialog(this, "Du står i schack");
+                break;
+            case SCHACKMATT:
+            case PATT:
+                String stateStr = state.toString();
+                String msg = stateStr.charAt(0) + stateStr.substring(1, stateStr.length()).toLowerCase();
+                int choice = JOptionPane.showConfirmDialog(this, msg + "\nVill du starta om?");
+
+                if (choice == JOptionPane.YES_OPTION)
+                    try {
+                        restartGame();
+                    } catch (IOException ex) {
+                    }
+
+                break;
+            default:
+        }
+    }
+
+    @Override
+    protected void toDoIfNoPreviousPieceSelected(Piece selectedPiece) {
+        if (selectedPiece != null && selectedPiece.isWhite() == whitesTurn)
+            validMovesToDraw.addAll(selectedPiece.validMoves(pieces, true));
+        else
+            validMovesToDraw = new ArrayList<>(); // Snabbare än .clear
+
+    }
+
+}

src/main/java/com/billenius/schack/pieces/Piece.java

@@ -5,13 +5,14 @@ import java.awt.Point;
 import java.awt.image.BufferedImage;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
 import javax.imageio.ImageIO;
 
-import com.billenius.schack.Board;
+import com.billenius.schack.boards.Board;
 
-public abstract class Piece {
+public abstract class Piece implements Serializable {
 
     /**
      * Variabel som alltid bör vara samma värde som pjäsen är i brädes av