I'm trying to create a moving sprite in java, which I have managed to do, except every time I move it there is an afterimage that follows the sprite. Are there any ways I could easily fix this problem without radically changing my code?
I'm completely stumped as to any kind of ways I could fix this problem.
To get the full context I have to post all three files.
Here's the first file:
package gameproject;
import java.awt.Image;
import java.awt.event.KeyEvent;
import javax.swing.ImageIcon;
public class CarMovement {
private int dx;
private int dy;
private int x = 635;
private int y = 550;
private int w;
private int h;
private Image moveimage;
public CarMovement() {
loadImage();
}
private void loadImage() {
ImageIcon q = new ImageIcon("racecar.png");
moveimage = q.getImage();
w = moveimage.getWidth(null);
h = moveimage.getHeight(null);
}
public void move() {
x += dx;
y += dy;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public int getWidth() {
return w;
}
public int getHeight() {
return h;
}
public Image getImage() {
return moveimage;
}
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
if (key == KeyEvent.VK_A) {
dx = -10;
}
if (key == KeyEvent.VK_D) {
dx = 10;
}
if (key == KeyEvent.VK_W) {
dy = -10;
}
if (key == KeyEvent.VK_S) {
dy = 10;
}
}
public void keyReleased(KeyEvent e) {
int key = e.getKeyCode();
if (key == KeyEvent.VK_A) {
dx = 0;
}
if (key == KeyEvent.VK_D) {
dx = 0;
}
if (key == KeyEvent.VK_W) {
dy = 0;
}
if (key == KeyEvent.VK_S) {
dy = 0;
}
}
}
The second:
package gameproject;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JPanel;
import javax.swing.Timer;
public class CarMovement2 extends JPanel implements ActionListener {
private Timer timer;
private CarMovement racecar;
private final int DELAY = 10;
public CarMovement2() {
initBoard();
}
private void initBoard() {
addKeyListener(new TAdapter());
setBackground(Color.black);
setFocusable(true);
racecar = new CarMovement();
timer = new Timer(DELAY, this);
timer.start();
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(new Color(0, 204, 0));
g.fillRect(0, 0, 400, 1100);
g.fillRect(1525, 0, 400, 1100);
g.setColor(new Color(102, 102, 102));
g.fillRect(400, 0, 1125, 1100);
g.setColor(new Color(255, 255, 255));
g.fillRect(940, 25, 25, 100);
g.fillRect(940, 325, 25, 100);
g.fillRect(940, 475, 25, 100);
g.fillRect(940, 625, 25, 100);
g.fillRect(940, 775, 25, 100);
g.fillRect(940, 925, 25, 100);
g.setColor(new Color(255, 255, 255));
g.fillRect(400, 175, 1125, 100);
g.setColor(new Color(0, 0, 0));
g.fillRect(400, 225, 50, 50);
g.fillRect(450, 175, 50, 50);
g.fillRect(500, 225, 50, 50);
g.fillRect(550, 175, 50, 50);
g.fillRect(600, 225, 50, 50);
g.fillRect(650, 175, 50, 50);
g.fillRect(700, 225, 50, 50);
g.fillRect(750, 175, 50, 50);
g.fillRect(800, 225, 50, 50);
g.fillRect(850, 175, 50, 50);
g.fillRect(900, 225, 50, 50);
g.fillRect(950, 175, 50, 50);
g.fillRect(1000, 225, 50, 50);
g.fillRect(1050, 175, 50, 50);
g.fillRect(1100, 225, 50, 50);
g.fillRect(1150, 175, 50, 50);
g.fillRect(1200, 225, 50, 50);
g.fillRect(1250, 175, 50, 50);
g.fillRect(1300, 225, 50, 50);
g.fillRect(1350, 175, 50, 50);
g.fillRect(1400, 225, 50, 50);
g.fillRect(1450, 175, 50, 50);
g.fillRect(1500, 225, 25, 50);
g.setColor(new Color(255, 255, 255));
g.fillRect(380, 0, 20, 1100);
g.fillRect(1525, 0, 20, 1100);
doDrawing(g);
Toolkit.getDefaultToolkit().sync();
}
private void doDrawing(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
g2d.drawImage(racecar.getImage(), racecar.getX(),
racecar.getY(), this);
}
@Override
public void actionPerformed(ActionEvent e) {
step();
}
private void step() {
racecar.move();
repaint(racecar.getX()-1, racecar.getY()-1,
racecar.getWidth()+2, racecar.getHeight()+2);
}
private class TAdapter extends KeyAdapter {
@Override
public void keyReleased(KeyEvent e) {
racecar.keyReleased(e);
}
@Override
public void keyPressed(KeyEvent e) {
racecar.keyPressed(e);
}
}
}
The third:
package gameproject;
import java.awt.EventQueue;
import javax.swing.JFrame;
public final class CarMovement3 extends JFrame {
public CarMovement3() {
InitUI();
}
private void InitUI() {
add(new CarMovement2());
setTitle("Top Speed Triumph");
setSize(1900, 1100);
setResizable(false);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
EventQueue.invokeLater(() -> {
CarMovement3 ex = new CarMovement3();
ex.setVisible(true);
});
}
}
And the link to the sprite : http://www.clker.com/clipart-red-sports-car-top-view.html
