How to do a score board?

[vlan]

hey

I wanna make a score board.
for exempel: When you touch the cirkel you should get one point.

could any one please help me:)?

import java.applet.*;
import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import java.util.*;


public class TE extends Applet implements KeyListener {
	Image bild1;
    float x = 80.0f, xPlayer = 20.0f;
    float y = 20.0f, yPlayer = 60.0f;
    int horPlayer = 0, verPlayer = 0;

    float hor = 1.0f, ver = 0.5f;
    Random rnd = new Random();


    public void init() {
        this.addKeyListener(this);
    }

    public void paint(Graphics g) {
    	bild1=getImage(getCodeBase(),"prog3.GIF");
        BufferedImage image = new BufferedImage(200, 200, BufferedImage.TYPE_INT_RGB);
        Graphics bufferedGraphics = image.getGraphics();

        bufferedGraphics.setColor(Color.WHITE);
        bufferedGraphics.fillRect(0, 0, image.getWidth(), image.getHeight());

        bufferedGraphics.setColor(Color.BLACK);
        bufferedGraphics.drawRect(10, 10, 150, 150);

        bufferedGraphics.setColor(Color.RED);
        int x = (int) this.x;
        int y = (int) this.y;
        bufferedGraphics.fillOval(x, y, 10, 10);

        bufferedGraphics.setColor(Color.BLUE);
        x = (int) this.xPlayer;
        y = (int) this.yPlayer;
        bufferedGraphics.fillOval(x, y, 10, 10);
        bufferedGraphics.dispose();
        g.drawImage(image, 0, 0, null);
        

        

        try {
            Thread.sleep(15);
        } catch (InterruptedException e) {
            System.out.println("EERRRROOOOORRRR");
        }
        uppdatera();
    }

    public void uppdatera() {
        if (x + hor > 150.0 || x + hor < 10.0)
            hor = -hor;

        x += hor;

        if (y + ver > 150.0 || y + ver < 10.0)
            ver = -ver;

        y += ver;


        if (xPlayer + horPlayer > 150.0 || xPlayer + horPlayer < 10.0)
            horPlayer = 0;

        xPlayer += horPlayer;


        if (yPlayer + verPlayer > 150.0 || yPlayer + verPlayer < 10.0)
            verPlayer = 0;

        yPlayer += verPlayer;

        Shape circlePC = new Ellipse2D.Float(x, y, 10.0f, 10.0f);
        Shape circlePlayer = new Ellipse2D.Float(xPlayer, yPlayer, 10.0f, 10.0f);
        if (circlePC.intersects(circlePlayer.getBounds())) {
            hor = -hor;
            ver = -ver;
            do {


                circlePC = new Ellipse2D.Float(x, y, 10.0f, 10.0f);
                circlePlayer = new Ellipse2D.Float(xPlayer, yPlayer, 10.0f, 10.0f);

                x += hor;
                y += ver;

            } while (circlePC.intersects(circlePlayer.getBounds()));
        }
        repaint();
    }

    private int mathrandom() {
// TODO Auto-generated method stub
        return 0;
    }


    public void keyTyped(KeyEvent e) {
        //empty
    }

    public void keyPressed(KeyEvent e) {
        int key = e.getKeyCode();

        if (key == KeyEvent.VK_LEFT)
            horPlayer = -2;
        if (key == KeyEvent.VK_RIGHT) {
            horPlayer = 2;
            System.out.println("right");
        }
        if (key == KeyEvent.VK_UP)
            verPlayer = -2;
        if (key == KeyEvent.VK_DOWN)
            verPlayer = 2;
    }

    public void keyReleased(KeyEvent e) {
        int key = e.getKeyCode();

        if (key == KeyEvent.VK_LEFT && horPlayer != 0)
            horPlayer = 0;
        if (key == KeyEvent.VK_RIGHT && horPlayer != 0)
            horPlayer = 0;
        if (key == KeyEvent.VK_UP && verPlayer != 0)
            verPlayer = 0;
        if (key == KeyEvent.VK_DOWN && verPlayer != 0)
            verPlayer = 0;
    }
}

[Norm]

What does the program now do or not do? Please explain.

Add some debugging code using println() to show where in the code its executing and what the values are there.

[vlan]

The program does:
One cirkel moves randomly in a box and bounce on the walls.
the second cirkel can i move with the arrow keys.
If the second cirkel touch the first cirkel (the one that moves random), then the first cirkel will bounce the other direction.

[Norm]

Does that explains what you want the program to do.

What does it do now? How do you want to change it? What does it not do?

[vlan]

This is what is does now:

One cirkel moves randomly in a box and bounce on the walls.
the second cirkel can i move with the arrow keys.
If the second cirkel touch the first cirkel (the one that moves random), then the first cirkel will bounce the other direction.

I wanna make a score board so you can get points if for exampel the blue cirkel touch the first cirkel, then you get one point and so on.

Do you understand?

[Norm]

if for exampel the blue cirkel touch the first cirkel

OK, How do you trying to detect if the circles touch? One test would be if the distance between the centers of the circles is < sum of their radius's.

[vlan]

I mean it was en exempel.
If you can make up some easier way to get score plz help me.

Just so i get score somehow i don,t really care how.

I just wanna learn how to use score. It is my first time.

hmm, i can,t come up with some easy way.....to get score.

[Norm]

You need to find where in the program it detects that the circles are touching.
Have you found that yet?

Use System.out.println() to output the results. Later you'll need to learn how to add an output field in the applet and display the results there.

[vlan]

Here i suppose:

public void uppdatera() {
        if (x + hor > 150.0 || x + hor < 10.0)
            hor = -hor;

        x += hor;

        if (y + ver > 150.0 || y + ver < 10.0)
            ver = -ver;

        y += ver;


        if (xPlayer + horPlayer > 150.0 || xPlayer + horPlayer < 10.0)
            horPlayer = 0;

        xPlayer += horPlayer;


        if (yPlayer + verPlayer > 150.0 || yPlayer + verPlayer < 10.0)
            verPlayer = 0;

        yPlayer += verPlayer;

        Shape circlePC = new Ellipse2D.Float(x, y, 10.0f, 10.0f);
        Shape circlePlayer = new Ellipse2D.Float(xPlayer, yPlayer, 10.0f, 10.0f);
        if (circlePC.intersects(circlePlayer.getBounds())) {
            hor = -hor;
            ver = -ver;
            do {


                circlePC = new Ellipse2D.Float(x, y, 10.0f, 10.0f);
                circlePlayer = new Ellipse2D.Float(xPlayer, yPlayer, 10.0f, 10.0f);

                x += hor;
                y += ver;

            } while (circlePC.intersects(circlePlayer.getBounds()));
        }
        repaint();
    }

[vlan]

I have tried something like

if( player_pos == boll_pos )
{
     playerscore += 200;
}

diffrent varibels on player_pos and boll_pos

But i coulden,t get it to work right.

[Norm]

What are player_pos and boll_pos?

It looks like:
circlePC.intersects(circlePlayer.getBounds())
is the test to make.

[vlan]

Thanks for the help!

I did it and it works perfect!!