Add ability to exit to main menu

src/com/annimon/turrets/DoubleBufferedCanvas.java

@@ -3,6 +3,8 @@ package com.annimon.turrets;
 import java.awt.Canvas;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.event.KeyEvent;
+import java.awt.event.KeyListener;
 import java.awt.event.MouseEvent;
 import java.awt.event.MouseListener;
 import java.awt.event.MouseMotionListener;
@@ -12,7 +14,7 @@ import java.awt.image.BufferedImage;
  *
  * @author aNNiMON
  */
-public abstract class DoubleBufferedCanvas extends Canvas implements MouseListener, MouseMotionListener {
+public abstract class DoubleBufferedCanvas extends Canvas implements MouseListener, MouseMotionListener, KeyListener {
     
     private final Graphics2D G;
     private final BufferedImage buffer;
@@ -24,6 +26,7 @@ public abstract class DoubleBufferedCanvas extends Canvas implements MouseListen
         
         addMouseListener(DoubleBufferedCanvas.this);
         addMouseMotionListener(DoubleBufferedCanvas.this);
+        addKeyListener(DoubleBufferedCanvas.this);
         
         buffer = new BufferedImage(Constants.WIDTH, Constants.HEIGHT, BufferedImage.TYPE_INT_RGB);
         G = buffer.createGraphics();
@@ -50,6 +53,8 @@ public abstract class DoubleBufferedCanvas extends Canvas implements MouseListen
     
     protected abstract void mouseDragged(int x, int y);
     
+    protected abstract void onExit();
+    
     @Override
     public void mouseClicked(MouseEvent e) {
     }
@@ -81,6 +86,21 @@ public abstract class DoubleBufferedCanvas extends Canvas implements MouseListen
     public void mouseMoved(MouseEvent e) {
     }
 
+    @Override
+    public void keyTyped(KeyEvent e) {
+    }
+
+    @Override
+    public void keyPressed(KeyEvent e) {
+        if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
+            onExit();
+        }
+    }
+
+    @Override
+    public void keyReleased(KeyEvent e) {
+    }
+    
     private final class DrawingThread extends Thread {
 
         private boolean keepRunning = true;

src/com/annimon/turrets/GameCanvas.java

@@ -177,6 +177,17 @@ public class GameCanvas extends DoubleBufferedCanvas implements Runnable, Networ
     
     private void finishGame(boolean instanceWin) {
         winState = (instanceWin) ? WIN : LOOSE;
+        gameStarted = false;
+    }
+    
+    @Override
+    protected void onExit() {
+        if (socketHelper != null) {
+            try {
+                socketHelper.close();
+            } catch (IOException ex) { }
+        }
+        Main.getInstance().switchLayout(Main.getInstance().getMainMenu());
     }
     
     private boolean allowMove() {

src/com/annimon/turrets/Main.java

@@ -27,6 +27,7 @@ public class Main extends JFrame {
 
     public Main() {
         super("Turrets");
+        setFocusable(true);
         setResizable(Constants.RESIZABLE);
         setLocationByPlatform(true);
         setDefaultCloseOperation(EXIT_ON_CLOSE);

src/com/annimon/turrets/MenuPanel.java

@@ -71,6 +71,7 @@ public class MenuPanel extends JPanel {
             switch (index) {
                 case 0: // Create server
                 case 1: // Join client
+                    menuList.removeSelectionInterval(0, 1);
                     GameCanvas canvas = new GameCanvas(index == 0);
                     Main.getInstance().switchLayout(canvas);
                     new Thread(canvas).start();