public void run() {
// Create and add sprites to the
// sprite manager
spriteManager = new SpriteManager(new BackgroundImage(this, backGroundImage));
// Create 15 sprites from 6 gif
// files.
for (int cnt = 0; cnt < 15; cnt++) {
Point position =
spriteManager.getEmptyPosition(
new Dimension(gifImages[0].getWidth(this), gifImages[0].getHeight(this)));
spriteManager.addSprite(makeSprite(position, cnt % 6));
} // end for loop
// Loop, sleep, and update sprite
// positions once each 83
// milliseconds
long time = System.currentTimeMillis();
while (true) { // infinite loop
spriteManager.update();
repaint();
try {
time += animationDelay;
Thread.sleep(Math.max(0, time - System.currentTimeMillis()));
} catch (InterruptedException e) {
System.out.println(e);
} // end catch
} // end while loop
} // end run method
// Overridden graphics update method
// on the Frame
public void update(Graphics g) {
// Create the offscreen graphics
// context
if (offScreenGraphicsCtx == null) {
offScreenImage = createImage(getSize().width, getSize().height);
offScreenGraphicsCtx = offScreenImage.getGraphics();
} // end if
// Draw the sprites offscreen
spriteManager.drawScene(offScreenGraphicsCtx);
// Draw the scene onto the screen
if (offScreenImage != null) {
g.drawImage(offScreenImage, 0, 0, this);
} // end if
} // end overridden update method