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Thread: Drawing 2 images of a the same Sprite

  1. #1
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    Default Drawing 2 images of a the same Sprite

    Im trying to draw 2 image of the asteroid sprite in my program. I can seem to get to display more than one asteroid


    import java.awt.*;
    import java.awt.image.*;
    import java.applet.*;
    import java.util.*;
    import java.net.*;

    public class SpriteTest extends Applet implements Runnable {
    int screenWidth = 640;
    int screenHeight = 480;

    //double buffer objects
    BufferedImage backbuffer;
    Graphics2D g2d;
    Sprite asteroid;
    Sprite spaceship;
    ImageEntity background;
    Thread gameloop;
    Random rand = new Random();

    public void init() {
    //create the back buffer for smooth graphics
    backbuffer = new BufferedImage(screenWidth, screenHeight,
    BufferedImage.TYPE_INT_RGB);
    g2d = backbuffer.createGraphics();

    //load the background
    background = new ImageEntity(this);
    background.load("bluespace.png");

    //load the asteroid sprite
    asteroid = new Sprite(this, g2d);
    asteroid.load("asteroid2.png");

    spaceship = new Sprite(this, g2d);
    spaceship.load("spaceship1.png");

    }

    public void start() {
    gameloop = new Thread(this);
    gameloop.start();
    }

    public void stop() {
    gameloop = null;
    }

    public void run() {
    Thread t = Thread.currentThread();
    while (t == gameloop) {
    try {
    Thread.sleep(30);
    }
    catch (InterruptedException e) {
    e.printStackTrace();
    }
    repaint();
    }
    }

    public void update(Graphics g) {
    //draw the background
    g2d.drawImage(background.getImage(), 0, 0, screenWidth-1, screenHeight-1, this);

    int width = screenWidth - asteroid.imageWidth() - 1;
    int height = screenHeight - asteroid.imageHeight() - 1;
    int width2 = screenWidth - spaceship.imageWidth() -2;
    int height2 = screenHeight - spaceship.imageHeight() -2;

    Point2D point = new Point2D(rand.nextInt(width), rand.nextInt(height));
    Point2D point2 = new Point2D(rand.nextInt(width2), rand.nextInt(height2));


    asteroid.setPosition(point);
    asteroid.transform();
    asteroid.draw();
    }
    spaceship.setPosition(point2);
    spaceship.transform();
    spaceship.draw();

    paint(g);
    }

    public void paint(Graphics g) {
    //draw the back buffer to the screen

    g.drawImage(backbuffer, 0, 0, this);


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Drawing 2 images of a the same Sprite

    Im trying to draw 2 image of the asteroid sprite
    Where do you draw the first one and then the second one?
    I don't see any comments telling me where to look for each draw being done.


    Also you didn't post all of the code. It ends in the middle of the paint() method.

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