Update Implementation AIGridGUI class

src/main/java/BattleShip/AIGridGUI.java

@@ -443,7 +443,8 @@ public class AIGridGUI extends JPanel {
         }
 
         public void mouseReleased(MouseEvent e) {
-
+            //If mouse released on cell clear for ship placement, place ship and mark appropriater cells.
+            BSButton cell = (BSButton) e.getSource();
         }
 
         public void mouseExited(MouseEvent e) {
@@ -457,5 +458,15 @@ public class AIGridGUI extends JPanel {
         BSButton cell = b;
         int actionToTake = x;
         clear = true;
+
+        //Check whether sufficient spaces are clear to place the ship.
+        if(vertical) {
+            for(int i = 0; i < shipToPlace.getLength(); i++) {
+                int testing = cell.getGridLocation() + (i * columns);
+                if(testing > (rows * columns) || buttons.get(testing).getCellContents() != null) {
+                    clear = false;
+                }
+            }
+        }
     }
 }