[JA] Bouncing CircleScroll

[benny!]

Here finally is the messy source code of my entry to the scroll competition.
See http://dbfinteractive.com/index.php?topic=1330.0;topicseen for the
original thread.

Code: [Select]

package anakata.modplay.example.applet;

import java.applet.Applet;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

import anakata.modplay.Meta;
import anakata.modplay.ThreadedPlayer;
import anakata.modplay.loader.ModuleLoader;
import anakata.modplay.module.Module;
import anakata.sound.output.JavaSoundOutput;
import anakata.sound.output.SoundDataFormat;


public class CircleScrollAna extends Applet {

   // Module Stuff
    public static final String INFO = Meta.PROJECT_NAME + " " + Meta.VERSION;

    public static final int BITS = 16;
    public static final int RATE = 44100;
    public static final int CHANNELS = 2;
    public static final boolean INTERPOLATE = true;
    public static final int BUFFERSIZE = 500;

    private Module module;
    private URL theUrl;
    private ThreadedPlayer tp;

    private String protocol;
    private String host;
    private int port;
    private List fileList = new ArrayList();
    private int nextModule = 0;

    private int lengthOfModule = 0;
   
// Applet Stuff
public int appHeight;
public int appWidth;
public Font appFont;


// Circlescroll Stuff
public CircleLetter[] letters = new CircleLetter[18];
public float fallFactor = 0.5f;
public float circleCenter_X;
public float circleCenter_Y;
public int border_Y;
public int circleRadius   = 100;
public int circleTextCount = 0;
public String circleText = "... this little bouncing circlescroller is my entry for the scroll comp at the wonderful "
+ "dbf+gvy demo code forum. Credits ... cool soundtrack by stargazer/cplx ... coding by benny! "
+ "ana-mp soundsystem by Torkjel Hongve ... greetings to shockwave, tracy, taj, jim, rbraz, "
+ "druid, rdc and all other forum guys who are keeping the oldschool demo spirit alive ... "
+ "... enjoy! ... benny!weltenkonstrukteur.de ... ... scroller restarts ... ... ";

    Image buffer;
    Graphics2D gBuffer;
   
    // CircleLetter InnerClass   
    public class CircleLetter {
    private String letter = "";
    private double radius;
    private int x,y;
    private boolean directionDown = true;
    private boolean directionLeft = true;
   
    public CircleLetter( double radius ) {
    this.radius = radius;
    }
   
    private void rotate( Graphics2D gBuffer ) {

    // Rotate and change chars
    radius = radius - 2 % 360;
   
    if ( (int)radius == 450 ) {
    letter = "" + circleText.charAt( circleTextCount );
    circleTextCount++;
    if ( circleTextCount == circleText.length() ) circleTextCount = 0;
    radius = 810;
    }
   
    // bounce up/down
    if ( directionDown ){
    fallFactor = fallFactor + 0.001f;
    circleCenter_Y = circleCenter_Y + fallFactor;
    if ( circleCenter_Y > border_Y ) {
    directionDown = false;
    }
    } else {
    fallFactor = fallFactor - 0.012f;
    if ( fallFactor < 0 ) {
    directionDown = true;
    }
    }
    // bounce left/right
    if ( directionLeft ){
    circleCenter_X = circleCenter_X + 0.1f;
    if ( circleCenter_X > 280 ) {
    directionLeft = false;
    }       
    } else {
    circleCenter_X = circleCenter_X - 0.1f;
    if ( circleCenter_X < 20 ) {
    directionLeft = true;
    }
    }
   
    // rotate
    x = (int)(circleRadius * Math.cos( radius * ( 2 * Math.PI / 360)) + circleCenter_X);
    y = (int)(circleRadius * Math.sin( radius * ( 2 * Math.PI / 360)) + circleCenter_Y);
   
    if ( y > appHeight ) y = appHeight;   
    if ( x > 288 ) x = 288;
    if ( x < 0 ) x = 0;
   
    gBuffer.drawString( letter, x, y);   
    }   
    }
   

   // Applet methods
   
    public void init() {

// App Stuff
appHeight    = this.getHeight();
appWidth    = this.getWidth();
appFont    = new Font( "Courier New", Font.BOLD, 20 );

// CircleScroll Stuff
circleCenter_X = this.getWidth() / 2;
circleCenter_Y = this.getHeight() / 2;
border_Y    = (int)(this.getHeight() * 0.95);

circleText = circleText.toUpperCase();

int start = 452;
for ( int i = 0; i < letters.length; i++ ) {
letters[i] = new CircleLetter( start );
start = start + 20;
}

// Music Stuff
        protocol = getParameter("protocol");
        host = getParameter("host");
        port = Integer.parseInt(getParameter("port"));
        StringTokenizer st = new StringTokenizer(getParameter("files"), ",");
        while (st.hasMoreTokens())
            fileList.add(st.nextToken());

        module = loadModule(nextModule++);
        // start the thread
        tp = createPlayer(module);
        lengthOfModule = tp.getModule().getNumberOfPositions();
        tp.start();       
       
}

    public void start() {
        tp.pause(false);
    }

    public void stop() {
        tp.pause(true);
    }

    public void destroy() {
        tp.stop();
    }

    /**
     * create a player thread for playing the
     * @param module
     * @return
     */
    private ThreadedPlayer createPlayer(Module module) {
        ThreadedPlayer player = new ThreadedPlayer();
        try {
            player.init(
                new JavaSoundOutput(new SoundDataFormat(BITS, RATE, CHANNELS), BUFFERSIZE),
                INTERPOLATE);
            player.load(module);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        player.pause(true);
        return player;
    }

    /**
     * load the <code>nextModule</code>'th file in the file list.
     * @param nextModule
     * @return
     */
    private Module loadModule(int nextModule) {
        int mc = fileList.size();
       
        while (nextModule <= 0) nextModule += mc;
        try {
            theUrl = new URL(protocol, host, port, (String)fileList.get((nextModule + mc) % mc));
            return ModuleLoader.getModuleLoader(theUrl).getModule();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }


public void paint(Graphics g) {

        // Double-Buffering
        if (buffer==null) {
            buffer=createImage(this.getSize().width, this.getSize().height);
            gBuffer=(Graphics2D)buffer.getGraphics();
        }
        gBuffer.setBackground( new Color( 120, 120, 250 ));
        gBuffer.setColor( Color.WHITE );
        gBuffer.setRenderingHint( RenderingHints.KEY_TEXT_ANTIALIASING,
        RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
        gBuffer.clearRect( 0,0,this.getSize().width, this.getSize().height);

        // Antialiasing
        gBuffer.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
            RenderingHints.VALUE_ANTIALIAS_ON);
       
        gBuffer.setFont( appFont );
       
        for ( int i=0; i < letters.length; i++ ) {
        letters[i].rotate( gBuffer );
        }
        g.drawImage (buffer, 0, 0, this);       
       
        // Delay
        try {Thread.sleep(10);}
        catch (InterruptedException e) {}                       

        // Loop Module
        if ( lengthOfModule == tp.getPosition() ) {
        tp.setPosition( 0 );
        tp.start();
        }
       
        repaint();
}

    public void update(Graphics g) {
    paint(g);
    }

}


[Jim]

Karma up for posting the source!

Which tookits are you using to develop/build it?

Jim

[benny!]

Karma up for posting the source!

Thanks mate

Which tookits are you using to develop/build it?

I do nearly all my work nowadays using Eclipse (current version 3.21) and
I really like it. A big plus is the numerous useful plugins available for Elcipse. I use
various plugins for Eclipse to code in  JavaScript, XML/HTML, J2ME, J2EE/J2SE, PHP,
Servlets/JSP, Webservices et cetera.

For those of you who don't know about Eclipse, here are some links :

http://www.eclipse.org/ (Official site)

http://eclipseme.org/ (Plugin to develop J2ME MIDlets)

http://www.zend.com/pdt (Eclipse for PHP Development)

http://www.eclipseplugincentral.com/ (Various useful plugins for Eclipse)