Optimize the two threads and how drawing is handled.

src/de/teamteamteam/spacescooter/Main.java

@@ -35,7 +35,7 @@ public class Main {
 				gf.draw(); //Draw nothing for the first time.
 			}
 		});
-		
+	
 		//Initialize GameThread
 		PaintThread paintThread = new PaintThread(gf);
 		paintThread.start();

src/de/teamteamteam/spacescooter/gui/GameFrame.java

@@ -39,9 +39,12 @@ public class GameFrame extends JFrame {
 
 		this.setVisible(true);
 
+		//ignore the OS telling us to repaint - it's wasting our time.
+		this.setIgnoreRepaint(true);
+		
+		//prepare the buffered strategy
 		this.createBufferStrategy(2);
 		this.bufferStrategy = this.getBufferStrategy();
-
 	}
 
 	/**
@@ -71,7 +74,7 @@ public class GameFrame extends JFrame {
 			} while (this.bufferStrategy.contentsRestored());
 			this.bufferStrategy.show();
 		} while (this.bufferStrategy.contentsLost());
-		Toolkit.getDefaultToolkit().sync();
+		Toolkit.getDefaultToolkit().sync(); //Tell the OS to update its graphics of the window.
 	}
 
 	public void drawBackgrounds(Graphics g) {

src/de/teamteamteam/spacescooter/threads/PaintThread.java

@@ -13,7 +13,7 @@ public class PaintThread extends TimingThread {
 
 	public PaintThread(GameFrame gf) {
 		this.gf = gf;
-		this.setName("GameThread");
+		this.setName("PaintThread");
 		this.setHz(60);
 	}
 

src/de/teamteamteam/spacescooter/threads/TimingThread.java

@@ -19,11 +19,10 @@ public abstract class TimingThread extends Thread {
 	public void run() {
 		while (true) {
 			long workStart = System.nanoTime();
-
 			// do the actual work
 			this.work();
-
 			long workDone = System.nanoTime();
+			//calculate time of work
 			long workTime = (workDone - workStart);
 
 			long timeToWait = this.workInterval - workTime;
@@ -32,14 +31,16 @@ public abstract class TimingThread extends Thread {
 			// wait using sleep for bigger intervals
 			if (msToWait > 1) {
 				try {
-					Thread.sleep(msToWait);
+					//make sure there is a little buffer for manual waiting loop left
+					Thread.sleep(Math.max(0,(msToWait - 1)));
 				} catch (InterruptedException e) {
 					System.err.println("[" + this.getName() + "]" + e.getStackTrace());
 				}
 			}
-
+			
-			while (this.workInterval - (System.nanoTime() - workStart) > 100);
+			//wait manually for the rest of the interval
-			//System.out.println("[" + this.getName() + "]: "+ (System.nanoTime() - workStart));
+			long sleepUntil = workStart + this.workInterval;
+			while ((sleepUntil- System.nanoTime()) > 100);
 		}
 	}
 

src/de/teamteamteam/spacescooter/threads/UpdateThread.java

@@ -9,13 +9,13 @@ public class UpdateThread extends TimingThread {
 		
 	public UpdateThread() {
 		this.setName("UpdateThread");
-		this.setHz(100);
+		this.setHz(60);
 	}
 	
 	public void work() {
-			// Update all the entities
+		// Update all the entities
-			this.updateBackgrounds();
+		this.updateBackgrounds();
-			this.updateEntities();
+		this.updateEntities();
 	}
 
 	private void updateBackgrounds() {