Added limits to movement to prevent player from leaving screen; reduced game dimensions

src/entities/Player.java

@@ -19,9 +19,9 @@ public class Player extends JPanel implements KeyListener, ActionListener {
 	private boolean debug = true;
 	
 	private Image sprite;
-	private int x = 400;
-	private int y = 512;
-	private int spd = 1;
+	private int x = 320;
+	private int y = 400;
+	private int spd = 2;
 	private int fdelay = 850; //Time in ms between shots
 
 	//Movement bools
@@ -43,7 +43,7 @@ public class Player extends JPanel implements KeyListener, ActionListener {
 		sprite = icon.getImage();
 		setFocusable(true);
 		addKeyListener(this);
-		setPreferredSize(new Dimension(800, 600));
+		setPreferredSize(new Dimension(640, 480));
 		//Timer to set target framerate to 60 (~16ms/frame)
 		gameTimer = new Timer(1000 / 60, this);
 		gameTimer.start();
@@ -58,10 +58,10 @@ public class Player extends JPanel implements KeyListener, ActionListener {
 		});
 	}
 	private void updatePosition() {
-		if (leftPressed) x -= spd;
-		if (rightPressed) x += spd;
-		if (upPressed) y -= spd;
-		if (downPressed) y += spd;
+		if (leftPressed && x > 12) x -= spd;
+		if (rightPressed && x < getWidth() - sprite.getWidth(null) - 12) x += spd;
+		if (upPressed && y > 12) y -= spd;
+		if (downPressed && y < getHeight() - sprite.getHeight(null) - 12) y += spd;
 		if (shootPressed) playerShoot();
 			
 		//Update bullet positions
@@ -161,6 +161,9 @@ public class Player extends JPanel implements KeyListener, ActionListener {
 			case KeyEvent.VK_SPACE:
 				shootPressed = false;
 				break;
+			case KeyEvent.VK_ESCAPE:
+				System.exit(0);
+				break;
 		}
 	}
 	

src/main/Main.java

@@ -16,7 +16,7 @@ public class Main {
 		mainframe.setResizable(false);
 		mainframe.setTitle("Tank Game");
 		mainframe.setLocationRelativeTo(null);
-		mainframe.setSize(800, 600);
+		mainframe.setSize(640, 480);
 		
 		//JLabel label = new JLabel("Label test!", JLabel.CENTER);
 		//mainframe.add(label);