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JackhammerDuke
/*
* %W% %E% Bob Weisblatt
*
* Copyright (c) 1994-1995 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL or COMMERCIAL purposes and
* without fee is hereby granted.
* Please refer to the file http://java.sun.com/copy_trademarks.html
* for further important copyright and trademark information and to
* http://java.sun.com/licensing.html for further important licensing
* information for the Java (tm) Technology.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*
* THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
* CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
* PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
* NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
* SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
* SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
* PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). SUN
* SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
* HIGH RISK ACTIVITIES.
*/
import java.io.InputStream;
import java.awt.*;
import java.net.*;
/**
* A simple java.applet.Applet class to play an image loop. The "img" tag parameter
* indicates what image loop to play.
*
* @author Bob Weisblatt (major thievery from jag, maybe wholesale is a better word.)
* @version 1.07f, 19 Jan 1995
*/
public class JackhammerDuke extends java.applet.Applet implements Runnable {
/**
* The current loop slot.
*/
int seqslot = 0;
/**
* The number of images
*/
int nimgs = 4;
/**
* A strip of 4 images.
*/
Image imgs;
/**
* The directory or URL from which the images are loaded
*/
String dir;
/**
* The thread animating the images.
*/
Thread kicker = null;
/**
* The length of the pause between revs.lkj
*/
int pause;
/**
* The current x position.
*/
double x;
int imgsWidth = 328;
int imgsHeight = 90;
/**
* Run the image loop. This method is called by class Thread.
* @see oak.lang.Thread
*
* getDocumentBase() is the URL of the document in which the applet is
* embedded. It shouldn't be changed.
*
* dir is in net.www.html.Tag but is undocumented.
*/
public void run() {
Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
imgs = getImage(getCodeBase(), "images/jack.gif");
if (imgs != null) {
x = (size().width - imgsWidth/nimgs) / 2;
while (size().width > 0 && size().height > 0 && kicker != null) {
if (seqslot == 0) {
play(getCodeBase(), "audio/jackhammer-short.au");
}
repaint();
try {Thread.sleep((seqslot == sequence.length -1) ? 500 : 100);} catch (InterruptedException e){}
seqslot = (seqslot + 1) % sequence.length;
}
}
}
private int sequence[] = { 2, 1, 0, 1, 0, 1, 0, 1, 2, 1, 0, 2, 0, 1, 0, 2, 3};
/**
* Paint the current frame.
*/
boolean erase;
public void update(Graphics g) {
if (erase || (sequence[seqslot] == 3)) {
g.setColor(Color.white);
g.fillRect(0, 0, size().width, size().height);
erase = false;
}
paint(g);
}
public void paint(Graphics g) {
int loopslot = sequence[seqslot];
if ((imgs != null) && (loopslot < nimgs)) {
int w = imgsWidth / nimgs;
x = Math.max(0, Math.min(size().width - w, x + Math.random() * 4 - 2));
g.clipRect((int)x, 0, w, imgsHeight);
g.drawImage(imgs, (int)x - loopslot * w, 0, this);
erase = (loopslot == 3);
}
}
/**
* Start the applet by forking an animation thread.
*/
public void start() {
if (kicker == null) {
kicker = new Thread(this);
kicker.start();
}
}
/**
* Stop the applet. The thread will exit because kicker is set to null.
*/
public void stop() {
kicker = null;
}
}
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