/*
DEVELOPING GAME IN JAVA
Caracteristiques
Editeur : NEW RIDERS
Auteur : BRACKEEN
Parution : 09 2003
Pages : 972
Isbn : 1-59273-005-1
Reliure : Paperback
Disponibilite : Disponible a la librairie
*/
import java.awt.DisplayMode;
import java.awt.Graphics;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.Window;
import java.util.ArrayList;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
public class AnimationTest1 {
public static void main(String args[]) {
DisplayMode displayMode;
if (args.length == 3) {
displayMode = new DisplayMode(Integer.parseInt(args[0]), Integer
.parseInt(args[1]), Integer.parseInt(args[2]),
DisplayMode.REFRESH_RATE_UNKNOWN);
} else {
displayMode = new DisplayMode(800, 600, 16,
DisplayMode.REFRESH_RATE_UNKNOWN);
}
AnimationTest1 test = new AnimationTest1();
test.run(displayMode);
}
private static final long DEMO_TIME = 5000;
private SimpleScreenManager screen;
private Image bgImage;
private Animation anim;
public void loadImages() {
// load images
bgImage = loadImage("images/background.jpg");
Image player1 = loadImage("images/player1.png");
Image player2 = loadImage("images/player2.png");
Image player3 = loadImage("images/player3.png");
// create animation
anim = new Animation();
anim.addFrame(player1, 250);
anim.addFrame(player2, 150);
anim.addFrame(player1, 150);
anim.addFrame(player2, 150);
anim.addFrame(player3, 200);
anim.addFrame(player2, 150);
}
private Image loadImage(String fileName) {
return new ImageIcon(fileName).getImage();
}
public void run(DisplayMode displayMode) {
screen = new SimpleScreenManager();
try {
screen.setFullScreen(displayMode, new JFrame());
loadImages();
animationLoop();
} finally {
screen.restoreScreen();
}
}
public void animationLoop() {
long startTime = System.currentTimeMillis();
long currTime = startTime;
while (currTime - startTime < DEMO_TIME) {
long elapsedTime = System.currentTimeMillis() - currTime;
currTime += elapsedTime;
// update animation
anim.update(elapsedTime);
// draw to screen
Graphics g = screen.getFullScreenWindow().getGraphics();
draw(g);
g.dispose();
// take a nap
try {
Thread.sleep(20);
} catch (InterruptedException ex) {
}
}
}
public void draw(Graphics g) {
// draw background
g.drawImage(bgImage, 0, 0, null);
// draw image
g.drawImage(anim.getImage(), 0, 0, null);
}
}
/**
* The Animation class manages a series of images (frames) and the amount of
* time to display each frame.
*/
class Animation {
private ArrayList frames;
private int currFrameIndex;
private long animTime;
private long totalDuration;
/**
* Creates a new, empty Animation.
*/
public Animation() {
frames = new ArrayList();
totalDuration = 0;
start();
}
/**
* Adds an image to the animation with the specified duration (time to
* display the image).
*/
public synchronized void addFrame(Image image, long duration) {
totalDuration += duration;
frames.add(new AnimFrame(image, totalDuration));
}
/**
* Starts this animation over from the beginning.
*/
public synchronized void start() {
animTime = 0;
currFrameIndex = 0;
}
/**
* Updates this animation's current image (frame), if neccesary.
*/
public synchronized void update(long elapsedTime) {
if (frames.size() > 1) {
animTime += elapsedTime;
if (animTime >= totalDuration) {
animTime = animTime % totalDuration;
currFrameIndex = 0;
}
while (animTime > getFrame(currFrameIndex).endTime) {
currFrameIndex++;
}
}
}
/**
* Gets this Animation's current image. Returns null if this animation has
* no images.
*/
public synchronized Image getImage() {
if (frames.size() == 0) {
return null;
} else {
return getFrame(currFrameIndex).image;
}
}
private AnimFrame getFrame(int i) {
return (AnimFrame) frames.get(i);
}
private class AnimFrame {
Image image;
long endTime;
public AnimFrame(Image image, long endTime) {
this.image = image;
this.endTime = endTime;
}
}
}
/**
* The SimpleScreenManager class manages initializing and displaying full screen
* graphics modes.
*/
class SimpleScreenManager {
private GraphicsDevice device;
/**
* Creates a new SimpleScreenManager object.
*/
public SimpleScreenManager() {
GraphicsEnvironment environment = GraphicsEnvironment
.getLocalGraphicsEnvironment();
device = environment.getDefaultScreenDevice();
}
/**
* Enters full screen mode and changes the display mode.
*/
public void setFullScreen(DisplayMode displayMode, JFrame window) {
window.setUndecorated(true);
window.setResizable(false);
device.setFullScreenWindow(window);
if (displayMode != null && device.isDisplayChangeSupported()) {
try {
device.setDisplayMode(displayMode);
} catch (IllegalArgumentException ex) {
// ignore - illegal mode for this device
}
}
}
/**
* Returns the window currently used in full screen mode.
*/
public Window getFullScreenWindow() {
return device.getFullScreenWindow();
}
/**
* Restores the screen's display mode.
*/
public void restoreScreen() {
Window window = device.getFullScreenWindow();
if (window != null) {
window.dispose();
}
device.setFullScreenWindow(null);
}
}
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