Bugfix: can no longer overwrite move with the UI. Added colours to signal end state.

src/main/java/org/toop/frontend/UI/UIGameBoard.java

@@ -3,11 +3,17 @@ package org.toop.frontend.UI;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import javax.swing.*;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.toop.frontend.games.LocalTicTacToe;
+import org.toop.game.tictactoe.GameBase;
 
 public class UIGameBoard {
     private static final int TICTACTOE_SIZE = 3;
 
+    private static final Logger logger = LogManager.getLogger(LocalGameSelector.class);
+
     private JPanel tttPanel; // Root panel for this game
     private JButton backToMainMenuButton;
     private JButton[] cells;
@@ -57,6 +63,7 @@ public class UIGameBoard {
             final int index = i;
             cells[i].addActionListener(
                     (ActionEvent _) -> {
+                        if (cells[index].getText().equals(" ")) {
                             int cp = this.localTicTacToe.getCurrentPlayersTurn();
                             if (cp == 0) {
                                 this.currentPlayer = "X";
@@ -67,6 +74,10 @@ public class UIGameBoard {
                             }
                             this.localTicTacToe.move(index);
                             cells[index].setText(currentPlayer);
+                        }
+                        else{
+                            logger.info("Player " + currentPlayerIndex + " attempted invalid move at: " + cells[index].getText());
+                        }
                     });
         }
 
@@ -77,6 +88,21 @@ public class UIGameBoard {
         System.out.println(cells[index].getText());
         cells[index].setText(move);
     }
+    public void setState(GameBase.State state, String playerMove) {
+        Color color;
+        if (state == GameBase.State.WIN && playerMove.equals(currentPlayer)) {
+            color = new Color(160,220,160);
+        }
+        else if (state == GameBase.State.WIN) {
+            color = new Color(220,160,160);
+        }
+        else{
+            color = new Color(220,220,160);
+        }
+        for (JButton cell : cells) {
+            cell.setBackground(color);
+        }
+    }
 
     public JPanel getTTTPanel() {
         return tttPanel;

src/main/java/org/toop/frontend/games/LocalTicTacToe.java

@@ -142,23 +142,34 @@ public class LocalTicTacToe { // TODO: Implement runnable
         this.ticTacToe = new TicTacToe("X", "O");
         while (running) {
             try {
+                GameBase.State state;
                 if (!isAiPlayer[0]) {
-                    this.ticTacToe.play(this.moveQueuePlayerA.take());
+                    state = this.ticTacToe.play(this.moveQueuePlayerA.take());
                 } else {
                     int bestMove = aiPlayers[0].findBestMove(this.ticTacToe);
-                    if (this.ticTacToe.play(bestMove) != GameBase.State.INVALID) {
+                    state = this.ticTacToe.play(bestMove);
+                    if (state != GameBase.State.INVALID) {
                         ui.setCell(bestMove, "X");
                     }
                 }
+                if (state ==  GameBase.State.WIN || state ==  GameBase.State.DRAW) {
+                    ui.setState(state, "X");
+                    running = false;
+                }
                 this.setNextPlayersTurn();
                 if (!isAiPlayer[1]) {
-                    this.ticTacToe.play(this.moveQueuePlayerB.take());
+                    state = this.ticTacToe.play(this.moveQueuePlayerB.take());
                 } else {
                     int bestMove = aiPlayers[1].findBestMove(this.ticTacToe);
-                    if (this.ticTacToe.play(bestMove) != GameBase.State.INVALID) {
+                    state = this.ticTacToe.play(bestMove);
+                    if (state != GameBase.State.INVALID) {
                         ui.setCell(bestMove, "O");
                     }
                 }
+                if (state ==  GameBase.State.WIN || state ==  GameBase.State.DRAW) {
+                    ui.setState(state, "O");
+                    running = false;
+                }
                 this.setNextPlayersTurn();
             } catch (InterruptedException e) {
                 throw new RuntimeException(e);

src/main/java/org/toop/game/tictactoe/ai/MinMaxTicTacToe.java

@@ -28,7 +28,7 @@ public class MinMaxTicTacToe {
         }
 
         if (empty && game.validateMove(4)) {
-            return 4;
+            return 0;
         }
 
         // simulate all possible moves on the field