turn on keyListening

core/view/GameWindow.java

@@ -44,6 +44,7 @@ class GameWindow extends JFrame implements KeyListener  {
 		this.currColonelZPM = colonelZPM;
 		this.currJaffaZPM = jaffaZPM;
 		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		this.addKeyListener(this);
 
 		// set default text to labels in status bar at bottom
 		this.colonelStatus = new JLabel("Colonel lives: "+