Restart game button?

[Harry Rollins]

Hi guys,

I am a beginner Java programmer and I have made a very simple applet with the wonderful help of some great YouTube tutorials and I was wondering if you guys knew of anyway of making a button that restarted the game without having to exit and reload the game manually. Here is my main class:

 import java.applet.Applet;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.net.URL;
import java.util.Random;

public class Start extends Applet implements Runnable, KeyListener,
		MouseMotionListener, MouseListener {

	private static final long serialVersionUID = 1L;
	private Image i;
	private Graphics doubleG;
	private Ball b;
	private Platform p[] = new Platform[7];
	Item item[] = new Item[3];
	private int score;
	double matrixX = 0;
	double matrixDx = 3;
	URL url;
	Image matrix;
	int levelcheck = 0;
	boolean gameOver = false;
	boolean mouseIn = false;

	public int getScore() {
		return score;
	}

	public void setScore(int score) {
		this.score = score;
	}

	@Override
	public void init() {
		setSize(800, 600);
		addKeyListener(this);
		addMouseMotionListener(this);
		try {
			url = getDocumentBase();

		} catch (Exception e) {
			// TODO: handle exception
		}

		matrix = getImage(url, "http://www.java-forums.org/images/Matrix-Encoding.png");
		new Pictures(this);

	}

	@Override
	public void start() {
		b = new Ball();
		score = 0;
		for (int i = 0; i < p.length; i++) {
			Random r = new Random();
			p[i] = new Platform(i * 120, 300);

		}

		for (int i = 0; i < item.length; i++) {
			Random r = new Random();
			switch (r.nextInt(5)) {
			case 0:
				item[i] = new GravUp(getWidth() + 2000 * i);
				break;
			case 1:
				item[i] = new GravDown(getWidth() + 2000 * i);
				break;
			case 2:
				item[i] = new AgilUp(getWidth() + 2000 * i);
				break;
			case 3:
				item[i] = new AgilDown(getWidth() + 2000 * i);
				break;
			case 4:
				item[i] = new Score(getWidth() + 2000 * i, this);
			}

		}

		Thread thread = new Thread(this);
		thread.start();

	}

	@Override
	public void run() {
		while (true) {

			gameOver = b.getGameOver();

			if (levelcheck > 3000) {
				Pictures.level++;
				levelcheck = 0;
			}
			levelcheck++;

			if (matrixX < getHeight() * 1) {
				matrixX += matrixDx;
			} else {
				matrixX = 0;
			}
			if (!gameOver) {
				score++;
			}

			Random r = new Random();

			for (int i = 0; i < item.length; i++) {
				if (item[i].isCreateNew()) {
					item[i] = null;
					switch (r.nextInt(5)) {
					case 0:
						item[i] = new GravUp(getWidth() + 10 * r.nextInt(500));
						break;
					case 1:
						item[i] = new GravDown(getWidth() + 10 * r.nextInt(500));
						break;
					case 2:
						item[i] = new AgilUp(getWidth() + 10 * r.nextInt(500));
						break;
					case 3:
						item[i] = new AgilDown(getWidth() + 10 * r.nextInt(500));
						break;
					case 4:
						item[i] = new Score(getWidth() + 10 * r.nextInt(500),
								this);
					}
					item[i].setCreateNew(false);
				}
			}

			b.update(this);

			for (int i = 0; i < p.length; i++) {
				p[i].update(this, b);
			}

			for (int i = 0; i < item.length; i++) {
				item[i].update(this, b);
			}

			repaint();
			try {
				Thread.sleep(15);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}

	@Override
	public void stop() {

	}

	@Override
	public void destroy() {

	}

	@Override
	public void update(Graphics g) {
		if (i == null) {
			i = createImage(this.getSize().width, this.getSize().height);
			doubleG = i.getGraphics();
		}

		doubleG.setColor(getBackground());
		doubleG.fillRect(0, 0, this.getSize().width, this.getSize().height);

		doubleG.setColor(getForeground());
		paint(doubleG);

		g.drawImage(i, 0, 0, this);
	}

	@Override
	public void paint(Graphics g) {
		g.setColor(new Color(15, 77, 147));
		g.fillRect(0, 0, getWidth(), getHeight());
		g.drawImage(matrix, 0, (int) matrixX, this);
		g.drawImage(matrix, 0, (int) matrixX - getHeight() + 1, this);
		b.paint(g);
		for (int i = 0; i < p.length; i++) {
			p[i].paint(g);
		}

		b.paint(g);
		for (int i = 0; i < item.length; i++) {
			item[i].paint(g);
		}
		String s = Integer.toString(score);
		Font font = new Font("Serif", Font.BOLD, 32);
		g.setFont(font);
		g.setColor(Color.BLACK);
		g.drawString(s, getWidth() - 150 + 2, 50 + 2);
		g.setColor(new Color(250, 100, 100));
		g.drawString(s, getWidth() - 150, 50);
		if (gameOver) {
			g.setColor(Color.WHITE);
			g.drawString("HAHA YOU LOST! What a plum.", 180, 300);
			
		}
	}

	@Override
	public void keyPressed(KeyEvent e) {
		switch (e.getKeyCode()) {
		case KeyEvent.VK_LEFT:
			b.moveLeft();
			break;
		case KeyEvent.VK_RIGHT:
			b.moveRight();
			break;
		case KeyEvent.VK_A:
			b.moveLeft();
			break;
		case KeyEvent.VK_D:
			b.moveRight();
			break;
		}
	}

	public void actionPerformed(ActionEvent e) {

		start();
	}

	@Override
	public void keyReleased(KeyEvent e) {
		int key = e.VK_R;
	}

	@Override
	public void keyTyped(KeyEvent e) {

	}

	@Override
	public void mouseDragged(MouseEvent e) {

	}

	@Override
	public void mouseMoved(MouseEvent e) {

		if (e.getX() > 280 && e.getX() < 460) {
			if (e.getY() > 310 && e.getY() < 370) {
				mouseIn = true;
			}
		}
		if (e.getX() < 280 || e.getX() > 460) {
			mouseIn = false;
		}
		if (e.getY() < 310 || e.getY() > 370) {
			mouseIn = false;
		}
	}

	@Override
	public void mouseClicked(MouseEvent arg0) {

	}

	@Override
	public void mouseEntered(MouseEvent arg0) {
		// TODO Auto-generated method stub

	}

	@Override
	public void mouseExited(MouseEvent arg0) {
		// TODO Auto-generated method stub

	}

	@Override
	public void mousePressed(MouseEvent arg0) {
		// TODO Auto-generated method stub

	}

	@Override
	public void mouseReleased(MouseEvent arg0) {
		// TODO Auto-generated method stub

	}

}

Any suggestions or code alterations would be so gratefully received also any other comments on the code would be nice as well.

Thanks

PlumApps

[Michael Dunn]

create a method, separate to init() or start(), named reset()? and put your current start-up code there.
ensure you set any variables to their starting state (except for games won/lost etc).

call reset() when the applet first opens, then for a new game call reset() again,
and the screen should appear exactly as when the applet first opened.

[Darryl Burke]

Please BeForthrightWhenCrossPostingToOtherSites
http://www.java-forums.org/new-java/59241-restart-reset-button.html