Got the menus working, now the KeyListener needs to be fixed.

src/spaceshipsim/SpaceShipSim.java

@@ -1,13 +1,7 @@
 package spaceshipsim;
 
 import javax.swing.*;
-import java.awt.*;
 import java.awt.event.*;
-import java.awt.geom.*;
-import java.awt.image.*;
-import java.util.*;
-
-import spaceshipsim.entities.*;
 
 /**
  * @author Nicolás A. Ortega
@@ -16,38 +10,24 @@ import spaceshipsim.entities.*;
  * @year 2014
  * 
  */
-public class SpaceShipSim extends JFrame implements Runnable, KeyListener {
+public class SpaceShipSim {
-	private final String version = "v0.2";
+	private JFrame frame;
+	private SimPanel panel;
 
 	// Menu items
 	JMenuBar menuBar;
 	JMenu simulationMenu;
 	JMenuItem exitMenuItem;
 
-	// Graphics/Framework items
-	private Thread gameloop;
-	private BufferedImage backbuffer;
-	private Graphics2D g2d;
-	private AffineTransform identity = new AffineTransform();
-
-	// The Ship
-	private Ship ship;
-
 	// Constructor:
 	public SpaceShipSim() {
-		super("Space Ship Simulator");
+		frame = new JFrame("SpaceShipSim");
-		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-		setSize(800, 600);
+		panel = new SimPanel();
+		frame.add(panel);
 		menuSetup();
-		setVisible(true);
+		frame.setSize(800, 600);
-
+		frame.setVisible(true);
-		backbuffer = new BufferedImage(800, 600, BufferedImage.TYPE_INT_RGB);
-		g2d = backbuffer.createGraphics();
-
-		ship = new Ship(400, 300);
-		addKeyListener(this);
-
-		start();
 	}
 
 	// FIXME: There are no errors in compilation or while running, but the menu bar does not appear
@@ -59,82 +39,15 @@ public class SpaceShipSim extends JFrame implements Runnable, KeyListener {
 		exitMenuItem.addActionListener(new ActionListener() {
 			@Override
 			public void actionPerformed(ActionEvent ae) {
-				stop();
+				panel.stop();
 				System.exit(0);
 			}
 		});
+		simulationMenu.add(exitMenuItem);
 		menuBar.add(simulationMenu);
-		this.setJMenuBar(menuBar);
+		frame.setJMenuBar(menuBar);
 	}
 	// !!!FIXME-END!!!
 
-	public void start() {
-		gameloop = new Thread(this);
-		gameloop.start();
-	}
-
-	public void stop() { gameloop = null; }
-
-	public void paint(Graphics g) {
-		g2d.setTransform(identity);
-		g2d.setPaint(Color.BLACK);
-		g2d.fillRect(0, 0, getSize().width, getSize().height);
-
-		drawInfo();
-		drawShip();
-
-		g.drawImage(backbuffer, 0, 0, this);
-	}
-
-	private void drawInfo() {
-		g2d.setPaint(Color.WHITE);
-		g2d.drawString("Welcome to SpaceShipSim " + version, 10, 40);
-		g2d.drawString("Position: " + (int)ship.getX() + ", " + (int)ship.getY(), 10, 55);
-		g2d.drawString("Velocity (px/s): " + (int)(ship.getVelX() * 50) + ", " + (int)(ship.getVelY() * 50), 10, 70);
-		g2d.drawString("Acceleration (px/s/s): " + (int)(ship.getAccelX() * Math.pow(50, 2)) + ", " + (int)(ship.getAccelY() * Math.pow(50, 2)), 10, 85);
-		g2d.drawString("Move Angle: " + (int)ship.getMoveAngle(), 10, 100);
-		g2d.drawString("Face Angle: " + (int)(ship.getFaceAngle() - 90), 10, 115);
-	}
-
-	private void drawShip() {
-		g2d.setTransform(identity);
-		g2d.translate(ship.getX(), ship.getY());
-		g2d.rotate(Math.toRadians(ship.getFaceAngle()));
-		g2d.setColor(Color.RED);
-		g2d.fill(ship.getShape());
-	}
-
-	public void run() {
-		Thread t = Thread.currentThread();
-
-		while(t == gameloop) {
-			try {
-				ship.update();
-
-				Thread.sleep(20);
-			} catch(InterruptedException ie) {
-				ie.printStackTrace();
-			}
-
-			repaint();
-		}
-	}
-
-	public void keyPressed(KeyEvent ke) {
-		int keyCode = ke.getKeyCode();
-
-		if(keyCode == KeyEvent.VK_UP) { ship.setAccelerate(true); }
-		if(keyCode == KeyEvent.VK_LEFT) { ship.setTurnLeft(true); }
-		if(keyCode == KeyEvent.VK_RIGHT) { ship.setTurnRight(true); }
-	}
-	public void keyReleased(KeyEvent ke) {
-		int keyCode = ke.getKeyCode();
-
-		if(keyCode == KeyEvent.VK_UP) { ship.setAccelerate(false); }
-		if(keyCode == KeyEvent.VK_LEFT) { ship.setTurnLeft(false); }
-		if(keyCode == KeyEvent.VK_RIGHT) { ship.setTurnRight(false); }
-	}
-	public void keyTyped(KeyEvent ke) {}
-
 	public static void main(String[] args) { new SpaceShipSim(); }
 }

src/spaceshipsim/entities/Ship.java

@@ -27,6 +27,7 @@ public class Ship extends BaseVectorShape {
 	public Ship(double nx, double ny) {
 		setX(nx);
 		setY(ny);
+		setVelY(-0.5);
 		setShape(new Polygon(shipx, shipy, shipx.length));
 		setAlive(true);
 	}