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POAffineTransform doesn't move image on key presses
 

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    <p>I'm having a bit of trouble developing my first Java game using images instead of vector graphics. Currently I'm experimenting with moving an Image on a key press with the <code>AffineTransform</code> object. Only it won't move. What am I doing wrong? I haven't tried using threads yet, but I am not sure how to do this. If you think it would help, please include it in your answer.</p> <p>Here is my code:</p> <pre><code>import java.awt.*; import java.net.*; import java.awt.event.*; import java.awt.geom.*; import java.applet.*; public class DisplayImage extends Applet implements KeyListener{ AffineTransform identity = new AffineTransform(); boolean left = false; boolean right = false; public URL getURL(String filename) { URL url = null; try { url = this.getClass().getResource(filename); } catch(Exception e){e.printStackTrace();} return url; } private Image image; public void init() { image = getImage(getURL("spaceship.png")); addKeyListener(this); } public void update(Graphics g){paint(g);} public void paint(Graphics g) { AffineTransform trans = new AffineTransform(); trans.setTransform(identity); Graphics2D g2d = (Graphics2D)g; g2d.setColor(Color.BLACK); g2d.fillRect(0,0,getSize().width,getSize().height); if(left==true) { trans.translate(-10,0); left = false; repaint(); } if(right==true) { trans.translate(10,0); right = false; repaint(); } g2d.drawImage(image,0,0,this); } public void keyPressed(KeyEvent e) { int keycode = e.getKeyCode(); switch(keycode) { case KeyEvent.VK_RIGHT: right = true; repaint(); case KeyEvent.VK_LEFT: left = true; repaint(); } } public void keyTyped(KeyEvent e){} public void keyReleased(KeyEvent e){} } </code></pre> <p>Can someone please comment or answer? I feel a "tumbleweed" badge heading my way. </p>
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    1. COAny particular reason you're using AffineTransform for movement instead of a standard world co-ordinate system? It might help to know what kind of game you're aiming for because there are better approaches to these mechanics.
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      1. USNikki
    2. CO@Nikki I am a complete game noob. If it helps, this is an applet based game which I am adapting from a book and am manipulating Images. The book said it was a good plan. If you have a better solution, please tell me!
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