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POThis square I'm animating is leaving a trail behind it, can anyone work out why?
 

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  1. POThis square I'm animating is leaving a trail behind it, can anyone work out why?
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    <p>Thanks for checking out this Question. I think I've just about scratched through my skull in frustration. So what I've got is a 'JFrame' containing a 'JPanel'. The 'JPanel' contains a little colored Square which is supposed to move X pixels whenever I click the window.</p> <p>Well, essentially everything behaves as it should, with one exception. When the blue square moves to the right, it leaves a trail of other squares behind it. It is not supposed to leave the trail, however, when I re-size the window, the trail vanishes.</p> <p>Catalyst.java</p> <pre><code>package Prototype; import java.awt.*; public class Catalyst { public static void main(String[] args){ World theWorldInstance = new World("Prototype", 100,100, 600,100); /*title,xpos,ypos,width,height*/ } } </code></pre> <p>World.java</p> <pre><code>package Prototype; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class World extends JFrame { Level mainPanel; public World(String title, int x, int y, int width, int height) { setTitle(title); setBounds(x,y,width,height); setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); setBackground(new Color(0x00000000)); initLevel(); } public void initLevel(){ mainPanel = new Level(); Container visibleArea = getContentPane(); visibleArea.add(mainPanel); setVisible(true); add(mainPanel); } } </code></pre> <p>Level.java</p> <pre><code>package Prototype; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Level extends JPanel implements MouseListener, ActionListener { Square x; public Level() { System.out.println("This is working correctly[JPANEL Cons]"); addMouseListener(this); x = new Square(); } public void paintComponent(Graphics g){ x.draw(g); } public void actionPerformed(ActionEvent e){ } public void mousePressed(MouseEvent e){ requestFocus(); x.move(); repaint(); System.out.println("Focus Acquired"); } public void mouseClicked(MouseEvent e) {} public void mouseReleased(MouseEvent e) {} public void mouseExited(MouseEvent e) {} public void mouseEntered(MouseEvent e) {} } </code></pre> <p>Square.java</p> <pre><code>package Prototype; import java.awt.*; public class Square { private Point position; private int size; private final int displacement; public Square(){ position = new Point(10,10); size = 20; displacement = 5; } public void draw(Graphics g){ g.setColor(Color.blue); g.fillRect(position.x-(size/2), position.y-(size/2), size,size ); g.setColor(Color.black); g.drawRect(position.x-(size/2), position.y-(size/2), size,size ); } public void move() { position.x += displacement; } } </code></pre> <p>Those are all my files. I hope I've phrased everything properly and provided all the content required. Whenever I've done something similar in the past this has never happened. I assume I'm missing something small, or I've done something stupid. If you can help me, thanks in advance!</p>
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