update

src/main/java/BattleShip/GridGUI.java

@@ -74,7 +74,13 @@ public class GridGUI {
     }
     public class MyCellListener implements ActionListener {
         public void actionPerformed(ActionEvent a) {
-
+            if(!clicked) {
+                BSButton cell = (BSButton) a.getSource();
+                Ship s = cell.getCellContents();
+                boolean killed = false;
+                numOfGuesses++;
+                boolean gameOver = true;
+            }
         }
     }
 }