fix timer

OOP_2B1_Project/boards/TestCheckMate

@@ -0,0 +1,9 @@
+BR,  ,  ,BK,  ,BR,  ,  
+BP,WP,BP,  ,  ,BP,BP,BP
+  ,  ,  ,  ,WP,  ,  ,  
+  ,  ,  ,  ,  ,  ,  ,  
+  ,  ,  ,  ,  ,  ,  ,  
+  ,  ,  ,  ,  ,  ,  ,  
+WP,WP,WP,  ,  ,WP,WP,WP
+WR,WN,WB,WQ,WK,WB,WN,WR
+3W

OOP_2B1_Project/boards/TestEnPassant

@@ -0,0 +1,9 @@
+BR,BN,BB,BQ,BK,BB,BN,BR
+  ,BP,BP,BP,BP,BP,BP,BP
+  ,  ,  ,  ,  ,  ,  ,  
+BP,  ,  ,WP,  ,  ,  ,  
+  ,  ,  ,  ,  ,  ,  ,  
+  ,  ,  ,  ,  ,  ,  ,  
+WP,WP,WP,  ,WP,WP,WP,WP
+WR,WN,WB,WQ,WK,WB,WN,WR
+4B

OOP_2B1_Project/boards/TestPromotion

@@ -0,0 +1,9 @@
+  ,  ,BB,BQ,BK,  ,  ,BR
+BP,WP,BP,BP,  ,BP,BP,BP
+  ,  ,BN,BB,  ,BP,  ,  
+  ,  ,  ,  ,  ,  ,  ,  
+  ,  ,  ,  ,  ,  ,  ,  
+  ,  ,  ,  ,  ,  ,  ,  
+  ,  ,  ,  ,  ,  ,  ,  
+  ,  ,  ,WK,  ,  ,  ,  
+3W

OOP_2B1_Project/src/windowInterface/TimerManager.java

@@ -0,0 +1,68 @@
+package windowInterface;
+
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.Timer;
+
+public class TimerManager {
+    private int whiteSeconds = 300;
+    private int blackSeconds = 300;
+    private boolean whiteTurn = true;
+    private Timer timer;
+    private Runnable onTimeout;
+    private JLabel whiteLabel;
+    private JLabel blackLabel;
+
+    public TimerManager(JLabel whiteLabel, JLabel blackLabel, Runnable onTimeout, int time) {
+        this.whiteLabel = whiteLabel;
+        this.blackLabel = blackLabel;
+        this.onTimeout = onTimeout;
+        this.whiteSeconds = time;
+        this.blackSeconds = time;
+
+        timer = new Timer(1000, e -> tick());
+    }
+
+    public void start(boolean whiteStarts) {
+        this.whiteTurn = whiteStarts;
+        timer.start();
+    }
+
+    public void switchTurn() {
+        whiteTurn = !whiteTurn;
+    }
+
+    private void tick() {
+        if (whiteTurn) {
+            whiteSeconds--;
+            updateLabel(whiteLabel, whiteSeconds);
+            if (whiteSeconds <= 0) timeout("White");
+        } else {
+            blackSeconds--;
+            updateLabel(blackLabel, blackSeconds);
+            if (blackSeconds <= 0) timeout("Black");
+        }
+    }
+
+    private void updateLabel(JLabel label, int seconds) {
+        int mins = seconds / 60;
+        int secs = seconds % 60;
+        label.setText(String.format("%s: %02d:%02d", label == whiteLabel ? "White" : "Black", mins, secs));
+    }
+
+    private void timeout(String player) {
+        timer.stop();
+        onTimeout.run(); // you define what happens on timeout
+        JOptionPane.showMessageDialog(null, player + " ran out of time! Game over.");
+    }
+
+    public void stop() {
+        timer.stop();
+    }
+
+public void reset() {
+        updateLabel(whiteLabel, whiteSeconds);
+        updateLabel(blackLabel, blackSeconds);
+    }
+    
+}