Added game clock

src/de/mp/jgame2d/core/Boot.java

@@ -17,6 +17,8 @@ public class Boot {
 
         window.setLocationRelativeTo(null);
         window.setVisible(true);
+
+        gamePanel.startGameThread();
     }
 
 }

src/de/mp/jgame2d/core/GamePanel.java

@@ -3,7 +3,7 @@ package de.mp.jgame2d.core;
 import javax.swing.*;
 import java.awt.*;
 
-public class GamePanel extends JPanel {
+public class GamePanel extends JPanel implements Runnable {
 
     // SCREEN SETTINGS
     final int originalTileSize = 16; //16x16 tile
@@ -16,10 +16,33 @@ public class GamePanel extends JPanel {
     final int screenWidth = tileSize * maxScreenCol; // 768 pixels
     final int screenHeight = tileSize * maxScreenRow; // 576 pixels
 
+    Thread gameThread;
+
     public GamePanel() {
         this.setPreferredSize(new Dimension(screenWidth, screenHeight));
         this.setBackground(Color.black);
         this.setDoubleBuffered(true);
     }
 
+    public void startGameThread() {
+        gameThread = new Thread(this);
+        gameThread.start();
+    }
+
+    @Override
+    public void run() {
+        while(gameThread != null) {
+            update();
+            repaint();
+        }
+    }
+
+    public void update() {
+
+    }
+
+    public void paintComponent(Graphics graphics) {
+        super.paintComponent(graphics);
+    }
+
 }