// main grameloop
public void gameLoop() {
long startingTime = System.currentTimeMillis();
long cumTime = startingTime;
while (running) {
long timePassed = System.currentTimeMillis() - cumTime;
cumTime += timePassed;
// a.update(timePassed);
update(timePassed);
// draw graphics
Graphics2D g = s.getGraphics();
draw(g);
g.dispose();
s.update();
try {
Thread.sleep(20);
} catch (Exception ex) {
}
}
}
