Slide Puzzle : Applet « Swing JFC « Java






Slide Puzzle

   
import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Rectangle;

/* SlidePuzzle, originally from VisualJ++ Developer's News, July 1997 */
public class SlidePuzzle extends Applet implements Runnable {
  Thread m_SlidePuzzle = null;

  private Graphics m_Graphics;

  private Image logo;

  private boolean m_fAllLoaded = false;

  private Rectangle squares[];

  private int order[];

  private int x = 1;

  private int y = 0;

  public void init() {
    //Define and populate Rectangle array
    squares = new Rectangle[9];
    squares[0] = new Rectangle(0, 0, 60, 60);
    squares[1] = new Rectangle(0, 60, 60, 60);
    squares[2] = new Rectangle(0, 120, 60, 60);
    squares[3] = new Rectangle(60, 0, 60, 60);
    squares[4] = new Rectangle(60, 60, 60, 60);
    squares[5] = new Rectangle(60, 120, 60, 60);
    squares[6] = new Rectangle(120, 0, 60, 60);
    squares[7] = new Rectangle(120, 60, 60, 60);
    squares[8] = new Rectangle(120, 120, 60, 60);

    //Define and populate int array
    order = new int[9];
    order[0] = 6;
    order[1] = 2;
    order[2] = 8;
    order[3] = 1;
    order[4] = 0;
    order[5] = 7;
    order[6] = 5;
    order[7] = 4;
    order[8] = 3;
  }

  public void paint(Graphics g) {
    if (m_fAllLoaded) {
      Rectangle r = g.getClipRect();
      g.clearRect(r.x, r.y, r.width, r.height);
      g.drawImage(logo, 0, 0, null);

    } else
      g.drawString("Loading images...", 10, 20);

  }

  public void start() {
    if (m_SlidePuzzle == null) {
      m_SlidePuzzle = new Thread(this);
      m_SlidePuzzle.start();
    }
  }

  public void stop() {
    if (m_SlidePuzzle != null) {
      m_SlidePuzzle.stop();
      m_SlidePuzzle = null;
    }
  }

  public void run() {
    if (!m_fAllLoaded) {
      m_Graphics = getGraphics();
      MediaTracker tracker = new MediaTracker(this);
      logo = getImage(getDocumentBase(), "vjlogo.gif");
      tracker.addImage(logo, 0);

      try {
        tracker.waitForAll();
        m_fAllLoaded = !tracker.isErrorAny();
      } catch (InterruptedException e) {
      }

      if (!m_fAllLoaded) {
        stop();
        m_Graphics.drawString("Error loading images!", 10, 40);
        return;
      }
    }

    //Clear the screen and draw first image
    repaint();

    //Move the squares
    while (true) {
      for (x = 1; x < 9; x++) {
        //Slow down the animation
        try {
          Thread.sleep(350);
        } catch (InterruptedException e) {
        }

        //Move square to next location

        m_Graphics.copyArea(squares[order[x]].x, squares[order[x]].y,
            60, 60, squares[order[x - 1]].x - squares[order[x]].x,
            squares[order[x - 1]].y - squares[order[x]].y);

        //Clear most recently copied square

        m_Graphics.clearRect(squares[order[x]].x, squares[order[x]].y,
            60, 60);
      }

      //Repaint original graphic after two cycles
      y++;
      if (y == 2) {
        repaint();
        y = 0;
      }
    }
  }
}

           
         
    
    
  








Related examples in the same category

1.Icon Demo Applet
2.Socket Applet
3.Applet Socket Quote
4.Applet Print
5.Applet System Properties
6.Applet Sound
7.Show Document
8.Applet communication (talk to each other)
9.Get Applets
10.JDBC applet
11.An application and an appletAn application and an applet
12.Applet and Swing ComponentsApplet and Swing Components
13.Icon behavior in JbuttonsIcon behavior in Jbuttons
14.Signed Applet
15.Load resource in Applet
16.Scribble AppletScribble Applet
17.Toggle buttonToggle button
18.Bouncing CircleBouncing Circle
19.Applet Menu Bar Demo
20.Applet clock demoApplet clock demo
21.Applet event testerApplet event tester
22.Applet with parameters
23.First applet
24.AppletViewer - a simple Applet Viewer program
25.A simple loan calculator appletA simple loan calculator applet
26.URLButton -- a Button-like object that jumps to a URL
27.Get list of APPLET tags in one HTML file
28.Demonstration of Applet Methods
29.Demonstrates getParameterInfo() and getAppletInfo()
30.Walking Text Demo
31.Java Applets Can Run CGI's (on some browsers)
32.Demo Choice Applet
33.Demo Applet: Connect to Legacy System
34.ShowDocApplet: try out showDocument()
35.Bookmarks
36.Java Wave Applet Demo
37.A class to allow use of the ncsa ISMAP format in java applets
38.Image Loader Applet
39.Thread Race Applet
40.Applet: Print from an Applet
41.Calling methods of an Applet from JavaScript code
42.Read an applet parameters
43.Change an applet background color
44.Passing Parameters to Java Applet
45.Display message in browser status bar
46.Your own Applet runtime environment
47.This applet is a simple button that plays an audio clip when pushed
48.EventQueue.invokeLater and JApplet
49.An applet component that draws a bar chart
50.This applet displays a greeting from the authors