Added some checks to the server to enshure that moves of the client are legal

src/de/itsblue/ConnectFour/ConnectFour.java

@@ -40,7 +40,6 @@ public class ConnectFour extends JFrame implements ActionListener {
 
     private ControllRow controllRow;
 
-    private int player = 0;
     private JLabel statusLabel;
 
     private int currentPlayer = -1;
@@ -60,6 +59,10 @@ public class ConnectFour extends JFrame implements ActionListener {
         Idle, Waiting, Running, Over
     }
 
+    enum GameOverReason {
+        Winner, Draw, OpponentDisconnected, Error
+    }
+
     /**
      * Constructor
      */
@@ -135,7 +138,8 @@ public class ConnectFour extends JFrame implements ActionListener {
                     e.printStackTrace();
                 }
 
-                this.players[0].addActionListener(this);
+                // do not add the listener of the local player here, as the client player will
+                // handle its moves in order to make shure they are legal
                 this.players[1].addActionListener(this);
 
                 break;
@@ -164,20 +168,33 @@ public class ConnectFour extends JFrame implements ActionListener {
         this.setGameState(GameState.Running);
     }
 
-    private void gameOver(String gameOverType) {
+    private void gameOver(GameOverReason reason, String attributes) {
         if (!this.gameState.equals(GameState.Running))
             return;
 
-        if (gameOverType.equals("draw")) {
+        if (this.gameType.equals(GameType.RemoteServer))
+            ((RemotePlayerServer) this.players[1]).notifyGameOver(reason.toString() + " " + attributes);
+
+        switch (reason) {
+            case Draw:
                 this.winnerPlayer = -1;
                 this.statusLabel.setText("Game over. This was a draw!");
-        } else {
+                break;
-            PlateType winnerPlateType = PlateType.valueOf(gameOverType);
+
+            case Winner:
+                PlateType winnerPlateType = PlateType.valueOf(attributes);
                 this.winnerPlayer = this.players[0].getUsedPlateType().equals(winnerPlateType) ? 0 : 1;
                 if (!this.gameType.equals(GameType.Local) && this.players[this.winnerPlayer] instanceof LocalPlayer)
                     this.statusLabel.setText("Game over. You won the game!");
                 else
-                this.statusLabel.setText("Game over. " + this.players[this.winnerPlayer].getName() + " won the game!");
+                    this.statusLabel
+                            .setText("Game over. " + this.players[this.winnerPlayer].getName() + " won the game!");
+
+            case OpponentDisconnected:
+                break;
+
+            case Error:
+                break;
         }
 
         this.setGameState(GameState.Over);
@@ -187,6 +204,9 @@ public class ConnectFour extends JFrame implements ActionListener {
         if (!this.gameState.equals(GameState.Over))
             return;
 
+        if(this.gameType.equals(GameType.RemoteServer))
+            ((RemotePlayerServer) this.players[1]).notifyGameReset();
+
         this.players[0] = null;
         this.players[1] = null;
         this.currentPlayer = -1;
@@ -217,6 +237,7 @@ public class ConnectFour extends JFrame implements ActionListener {
         if (e.getSource() instanceof Player) {
             Player src = (Player) e.getSource();
             if (e.getActionCommand().startsWith("doMove")
+                // handle moves
                     && (this.gameType == GameType.RemoteClient || this.players[this.currentPlayer].equals(src))) {
 
                 boolean res = this.gameBoard.insertPlate(new Plate(src.getUsedPlateType()),
@@ -229,20 +250,32 @@ public class ConnectFour extends JFrame implements ActionListener {
 
                 if (this.gameType != GameType.RemoteClient && this.gameState.equals(GameState.Running))
                     switchPlayer();
+
             } else if (e.getActionCommand().startsWith("isMyTurnChanged")) {
+                // handle a turn change
+
                 if (e.getActionCommand().split(" ")[1].equals("true")) {
                     if (!this.gameType.equals(GameType.Local) && src instanceof LocalPlayer)
                         this.statusLabel.setText("Running, it's your turn!'");
                     else
                         this.statusLabel.setText("Running, it's " + src.getName() + "'s turn!'");
                 }
+
+            } else if (e.getActionCommand().startsWith("gameReset")) {
+                if(!this.gameState.equals(GameState.Over))
+                this.gameOver(GameOverReason.OpponentDisconnected, "");
+                else
+                this.resetGame();
             }
         }
 
         // catch board events
         if (e.getSource() instanceof GameBoard) {
             if (e.getActionCommand().startsWith("gameOver")) {
-                this.gameOver(e.getActionCommand().split(" ")[1]);
+                if(e.getActionCommand().split(" ")[1].equals("draw"))
+                    this.gameOver(GameOverReason.Draw, "");
+                else
+                    this.gameOver(GameOverReason.Winner, e.getActionCommand().split(" ")[1]);
             }
         }
     }

src/de/itsblue/ConnectFour/player/Player.java

@@ -79,7 +79,7 @@ public abstract class Player {
         if (isMyTurn)
             this.gameControllingButtonRow.setColor(Plate.getColor(this.usingPlateType));
 
-        this.fireActionListeners("isMyTurnChanged " + (isMyTurn ? "true" : "false"));
+        this.fireActionListeners(this,"isMyTurnChanged " + (isMyTurn ? "true" : "false"));
     }
 
     /**
@@ -89,7 +89,7 @@ public abstract class Player {
      */
     protected void doMove(int column) {
         if (this.isMyTurn) {
-            this.fireActionListeners("doMove " + column);
+            this.fireActionListeners(this, "doMove " + column);
         }
     }
 
@@ -108,8 +108,8 @@ public abstract class Player {
      * @return player name
      */
     public String getName() {
-        Color winnerColor = Plate.getColor(this.usingPlateType);
+        Color thisColor = Plate.getColor(this.usingPlateType);
-        return winnerColor.equals(Color.BLACK) ? "Black":"Red";
+        return thisColor.equals(Color.BLACK) ? "Black":"Red";
     }
 
     /**
@@ -117,10 +117,9 @@ public abstract class Player {
      * 
      * @param actionCommand The action command to fire the listeners with
      */
-    protected void fireActionListeners(String actionCommand) {
+    protected void fireActionListeners(Object source, String command) {
         for (ActionListener playerActionListener : playerActionListeners) {
-            ActionEvent e = new ActionEvent(this, this.currentActionId, actionCommand);
+            playerActionListener.actionPerformed(new ActionEvent(source, this.currentActionId, command));
-            playerActionListener.actionPerformed(e);
             this.currentActionId++;
         }
     }

src/de/itsblue/ConnectFour/player/RemotePlayer.java

@@ -22,7 +22,6 @@ import de.itsblue.ConnectFour.Plate.*;
 
 import java.awt.event.*;
 import java.util.Scanner;
-import java.io.IOException;
 import java.io.PrintWriter;
 import java.net.Socket;
 import java.util.concurrent.ExecutorService;
@@ -73,20 +72,7 @@ public abstract class RemotePlayer extends Player implements ActionListener {
     }
 
     @Override
-    public void actionPerformed(ActionEvent e) {
+    public abstract void actionPerformed(ActionEvent e);
-
-        if(!(e.getSource() instanceof Player))
-        return;
-
-        if (e.getActionCommand().startsWith("doMove")) {
-            int column = Integer.parseInt(e.getActionCommand().split(" ")[1]);
-            try {
-                this.out.println("movePerformed " + column);
-            } catch (Exception ex) {
-                ex.printStackTrace();
-            }
-        }
-    }
 
     private class SocketListener implements Runnable {
         RemotePlayer parent;

src/de/itsblue/ConnectFour/player/RemotePlayerClient.java

@@ -22,8 +22,7 @@ import java.util.Scanner;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.net.Socket;
-import java.util.concurrent.ExecutorService;
+import java.awt.event.*;
-import java.util.concurrent.Executors;
 
 import de.itsblue.ConnectFour.Plate.*;
 import de.itsblue.ConnectFour.*;
@@ -52,21 +51,47 @@ public class RemotePlayerClient extends RemotePlayer {
         System.out.println("Connected to Connect4 server");
 
         this.startListening();
-
     }
 
     public void handleResponse(String response) {
+        System.out.println("[SOCKET] Got: " + response);
+
         if (response.startsWith("setUsingPlateType")) {
             // handle PlateType change
-            this.usingPlateType = PlateType.valueOf(response.split(" ")[1]);
+            this.opponent.usingPlateType = PlateType.valueOf(response.split(" ")[1]);
-            this.opponent.usingPlateType = this.usingPlateType == PlateType.O ? PlateType.X : PlateType.O;
+            this.usingPlateType = this.usingPlateType == PlateType.O ? PlateType.X : PlateType.O;
+
         } else if (response.startsWith("setIsMyTurn")) {
             // handle turn change
-            this.setIsMyTurn(response.split(" ")[1].equals("true"));
+            PlateType targetPlateType = PlateType.valueOf(response.split(" ")[1]);
-            opponent.setIsMyTurn(response.split(" ")[1].equals("false"));
+            Player target = this.getUsedPlateType().equals(targetPlateType) ? this:this.opponent;
+            target.setIsMyTurn(response.split(" ")[2].equals("true"));
+
         } else if (response.startsWith("movePerformed")) {
             // handle move performed
-            this.doMove(Integer.parseInt(response.split(" ")[1]));
+            PlateType targetPlateType = PlateType.valueOf(response.split(" ")[1]);
+            Player target = this.getUsedPlateType().equals(targetPlateType) ? this:this.opponent;
+            this.fireActionListeners(target, "doMove " + Integer.parseInt(response.split(" ")[2]));
+
+        } else if(response.startsWith("gameOver") || response.startsWith("gameReset")) {
+            // handle game over
+            this.fireActionListeners(this, response);
+        }
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        if(!(e.getSource() instanceof Player))
+        return;
+
+        if (e.getActionCommand().startsWith("doMove")) {
+            int column = Integer.parseInt(e.getActionCommand().split(" ")[1]);
+            try {
+                this.out.println("doMove " + column);
+                System.out.println("[SOCKET] SENT: " + "doMove " + column);
+            } catch (Exception ex) {
+                ex.printStackTrace();
+            }
         }
     }
 }

src/de/itsblue/ConnectFour/player/RemotePlayerServer.java

@@ -19,15 +19,10 @@
 package de.itsblue.ConnectFour.player;
 
 import java.awt.event.*;
-
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.net.ServerSocket;
-import java.net.Socket;
-import java.util.Arrays;
 import java.util.Scanner;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 
 import de.itsblue.ConnectFour.Plate.*;
 import de.itsblue.ConnectFour.*;
@@ -52,6 +47,9 @@ public class RemotePlayerServer extends RemotePlayer {
             throws Exception {
         super(gameControllingButtonRow, usingPlateType, opponent);
 
+        // also catch own actions
+        this.addActionListener(this);
+
         this.serverSocket = new ServerSocket(4444);
         System.out.println("Connect4 Server is Running...");
 
@@ -61,15 +59,31 @@ public class RemotePlayerServer extends RemotePlayer {
 
         System.out.println("Client connected");
 
-        out.println("setUsingPlateType " + this.opponent.usingPlateType.name());
+        out.println("setUsingPlateType " + this.usingPlateType.name());
-        out.println("setIsMyTurn " + (this.opponent.isMyTurn ? "true" : "false"));
 
         this.startListening();
     }
 
     public void handleResponse(String response) {
-        if (response.startsWith("movePerformed")) {
+        if (response.startsWith("doMove")) {
+            if (this.isMyTurn)
                 this.doMove(Integer.parseInt(response.split(" ")[1]));
+            else
+                this.out.println("invalidMove " + response.split(" ")[1]);
+        }
+    }
+
+    public void notifyGameOver(String reason) {
+        this.out.println("gameOver " + reason);
+    }
+
+    public void notifyGameReset() {
+        this.out.println("gameReset");
+
+        try {
+            this.socket.close();
+        } catch (IOException e) {
+            e.printStackTrace();
         }
     }
 
@@ -79,10 +93,22 @@ public class RemotePlayerServer extends RemotePlayer {
     @Override
     public void actionPerformed(ActionEvent e) {
 
-        super.actionPerformed(e);
+        if(!(e.getSource() instanceof Player))
+        return;
+
+        Player src = (Player)e.getSource();
+
+        if (e.getActionCommand().startsWith("doMove")) {
+            int column = Integer.parseInt(e.getActionCommand().split(" ")[1]);
+            try {
+                this.out.println("movePerformed " + src.getUsedPlateType().toString() + " " + column);
+            } catch (Exception ex) {
+                ex.printStackTrace();
+            }
+        }
 
         if (e.getActionCommand().startsWith("isMyTurnChanged")) {
-            out.println("setIsMyTurn " + (e.getActionCommand().split(" ")[1]));
+            out.println("setIsMyTurn " + src.getUsedPlateType().toString() + " " + (e.getActionCommand().split(" ")[1]));
         }
     }
 }