Allow Escape to Quit the application

1 files changed, 16 insertions, 0 deletions

diff --git a/src/RobotRace.java b/src/RobotRace.java
index f9c1a0b..4384b38 100644
--- a/src/RobotRace.java
+++ b/src/RobotRace.java
@@ -1,6 +1,10 @@
 
+import java.awt.KeyEventDispatcher;
+import java.awt.KeyboardFocusManager;
+import java.awt.event.KeyEvent;
 import javax.media.opengl.GL;
 import static javax.media.opengl.GL2.*;
+import javax.swing.UIManager;
 import robotrace.Base;
 import robotrace.Vector;
 
@@ -520,6 +524,18 @@ public class RobotRace extends Base {
      * the RobotRace implementation.
      */
     public static void main(String args[]) {
+        // Being able to exit by pressing Escape would be nice.
+        KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(new KeyEventDispatcher() {
+            @Override
+            public boolean dispatchKeyEvent(KeyEvent e) {
+                if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
+                    System.err.println("Exiting...");
+                    System.exit(0);
+                    return true;
+                }
+                return false;
+            }
+        });
         RobotRace robotRace = new RobotRace();
     }