Can you help me?

[Kenshei]

Hai all, can you help me?

Now I'm working on my final assignment. I want to make a game using netbeans. maybe any of you who have a tutorial how to make a shooting game or maybe the source code for game shooting?


Thanks.. :)

[srisar]

do you want make kinda 3d FPS or old console like 2d shooter games, i dont think so it is such a small process to be explained in a tutorial. anyway i found this site on google search The Java 2D games tutorial

hope it will help to get started

[Kenshei]

do you want make kinda 3d FPS or old console like 2d shooter games, i dont think so it is such a small process to be explained in a tutorial. anyway i found this site on google search

hope it will help to get started

Oh yes, you right, i means old console 2D Shooter games..
maybe you have the others?
Thanks.

[srisar]

did u check the link i gave. it is very good starting point.

Collision detection

check out this link, i think this is what you want

[Kenshei]

Yes, you're right, but i want ask more similar games shooter..
the link you provided was excellent. thanks.
whether the games were games desktop or mobile games, maybe you know?

Sorry if my English bad..
Hehe..

[srisar]

those are for desktop. i really dont know that much about game development, im also new to java. if you google you will get what you want perhaps...:)

[Kenshei]

Haha, you're right srisar..
I searching on google but nothing i've found..
Its hard to find a free code, but you can found it.. LOL..
Hahaha.
Thanks Srisar

[srisar]

believe me man, i just searched the keyword as "java games tutorial" and got the result. you have to try like that.. perhaps search it on sourceforge, you may get

[Kenshei]

Hahha..
maybe only i cannot find it.
Ok then, i will seach it..
Thanks. :)

[Eranga]

Or search the forum. You can find lots of details related to you question.

And if you can create your own for the assignment it's much better. Good luck :)

[Kenshei]

Ok i will search again.
Ehm, Maybe you know how to put Jpanel on the Jframe?
Thanks Eranga. :)

[Eranga]

I'll give a simple example code segment here. But you must study more about those things before digging into your assignment.

JFrame myFrame = new JFrame("Title Bar Text");
JPanel panel = new JPanel();
myFrame.setSize(256,256);
myFrame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);

// Rest of the properties

myFrame.getContentPane().add(panel);
myFrame.pack();
myFrame.setVisible(true);

[Kenshei]

Thanks yow Eranga.. =)

[Eranga]

You are welcome. If you've solved the problem please mark thread solved.

[Kenshei]

How can i put image in background using Netbeans? Maybe somebody can help me? ^^

[Eranga]

Nothing to do with NetBeans. You have to use a container. Are you using JFrame? Then how you added/place components?

Did you try anything on this, can you show your effort here? Using JPanel you can do that easily.

Hint: User drawImage() from the Graphics class with a BufferedImage object. Go through the Java doc for more details.

[Kenshei]

Hmm, i mean where i can found a way to input my image to use as background? Because i search and i can't found it.

Eranga, could you help me, with this coding..
Sorry if i was wrong room to ask it.


package spaceinvaders;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Toolkit;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.Random;

import javax.swing.ImageIcon;
import javax.swing.JPanel;


public class Board extends JPanel implements Runnable, Commons {

private Dimension d;
private ArrayList aliens;
private Player player;
private Shot shot;

private int alienX = 150;
private int alienY = 5;
private int direction = -1;
private int deaths = 0;

private boolean ingame = true;
private final String expl = "../spacepix/explosion.png";
private final String alienpix = "../spacepix/alien.png";
private String message = "Game Over";

private Thread animator;

public Board()
{

addKeyListener(new TAdapter());
setFocusable(true);
d = new Dimension(BOARD_WIDTH, BOARD_HEIGTH);
setBackground(Color.black);

gameInit();
setDoubleBuffered(true);
}

public void addNotify() {
super.addNotify();
gameInit();
}

public void gameInit() {

aliens = new ArrayList();

ImageIcon ii = new ImageIcon(this.getClass().getResource(alienpix));

for (int i=0; i < 4; i++) {
for (int j=0; j < 6; j++) {
Alien alien = new Alien(alienX + 18*j, alienY + 18*i);
alien.setImage(ii.getImage());
aliens.add(alien);
}
}

player = new Player();
shot = new Shot();

if (animator == null || !ingame) {
animator = new Thread(this);
animator.start();
}
}

public void drawAliens(Graphics g)
{
Iterator it = aliens.iterator();

while (it.hasNext()) {
Alien alien = (Alien) it.next();

if (alien.isVisible()) {
g.drawImage(alien.getImage(), alien.getX(), alien.getY(), this);
}

if (alien.isDying()) {
alien.die();
}
}
}

public void drawPlayer(Graphics g) {

if (player.isVisible()) {
g.drawImage(player.getImage(), player.getX(), player.getY(), this);
}

if (player.isDying()) {
player.die();
ingame = false;
}
}

public void drawShot(Graphics g) {
if (shot.isVisible())
g.drawImage(shot.getImage(), shot.getX(), shot.getY(), this);
}

public void drawBombing(Graphics g) {

Iterator i3 = aliens.iterator();

while (i3.hasNext()) {
Alien a = (Alien) i3.next();

Alien.Bomb b = a.getBomb();

if (!b.isDestroyed()) {
g.drawImage(b.getImage(), b.getX(), b.getY(), this);
}
}
}

public void paint(Graphics g)
{
super.paint(g);

g.setColor(Color.black);
g.fillRect(0, 0, d.width, d.height);
g.setColor(Color.green);

if (ingame) {

g.drawLine(0, GROUND, BOARD_WIDTH, GROUND);
drawAliens(g);
drawPlayer(g);
drawShot(g);
drawBombing(g);
}

Toolkit.getDefaultToolkit().sync();
g.dispose();
}

public void gameOver()
{

Graphics g = this.getGraphics();

g.setColor(Color.black);
g.fillRect(0, 0, BOARD_WIDTH, BOARD_HEIGTH);

g.setColor(new Color(0, 32, 48));
g.fillRect(50, BOARD_WIDTH/2 - 30, BOARD_WIDTH-100, 50);
g.setColor(Color.white);
g.drawRect(50, BOARD_WIDTH/2 - 30, BOARD_WIDTH-100, 50);

Font small = new Font("Helvetica", Font.BOLD, 14);
FontMetrics metr = this.getFontMetrics(small);

g.setColor(Color.white);
g.setFont(small);
g.drawString(message, (BOARD_WIDTH - metr.stringWidth(message))/2,
BOARD_WIDTH/2);
}

public void animationCycle() {

if (deaths == NUMBER_OF_ALIENS_TO_DESTROY) {
ingame = false;
message = "Game won!";
}

// player

player.act();

// shot
if (shot.isVisible()) {
Iterator it = aliens.iterator();
int shotX = shot.getX();
int shotY = shot.getY();

while (it.hasNext()) {
Alien alien = (Alien) it.next();
int alienX = alien.getX();
int alienY = alien.getY();

if (alien.isVisible() && shot.isVisible()) {
if (shotX >= (alienX) &&
shotX <= (alienX + ALIEN_WIDTH) &&
shotY >= (alienY) &&
shotY <= (alienY+ALIEN_HEIGHT) ) {
ImageIcon ii =
new ImageIcon(getClass().getResource(expl));
alien.setImage(ii.getImage());
alien.setDying(true);
deaths++;
shot.die();
}
}
}

int y = shot.getY();
y -= 4;
if (y < 0)
shot.die();
else shot.setY(y);
}

// aliens

Iterator it1 = aliens.iterator();

while (it1.hasNext()) {
Alien a1 = (Alien) it1.next();
int x = a1.getX();

if (x >= BOARD_WIDTH - BORDER_RIGHT && direction != -1) {
direction = -1;
Iterator i1 = aliens.iterator();
while (i1.hasNext()) {
Alien a2 = (Alien) i1.next();
a2.setY(a2.getY() + GO_DOWN);
}
}

if (x <= BORDER_LEFT && direction != 1) {
direction = 1;

Iterator i2 = aliens.iterator();
while (i2.hasNext()) {
Alien a = (Alien)i2.next();
a.setY(a.getY() + GO_DOWN);
}
}
}


Iterator it = aliens.iterator();

while (it.hasNext()) {
Alien alien = (Alien) it.next();
if (alien.isVisible()) {

int y = alien.getY();

if (y > GROUND - ALIEN_HEIGHT) {
ingame = false;
message = "Invasion!";
}

alien.act(direction);
}
}

// bombs

Iterator i3 = aliens.iterator();
Random generator = new Random();

while (i3.hasNext()) {
int shot = generator.nextInt(15);
Alien a = (Alien) i3.next();
Alien.Bomb b = a.getBomb();
if (shot == CHANCE && a.isVisible() && b.isDestroyed()) {

b.setDestroyed(false);
b.setX(a.getX());
b.setY(a.getY());
}

int bombX = b.getX();
int bombY = b.getY();
int playerX = player.getX();
int playerY = player.getY();

if (player.isVisible() && !b.isDestroyed()) {
if ( bombX >= (playerX) &&
bombX <= (playerX+PLAYER_WIDTH) &&
bombY >= (playerY) &&
bombY <= (playerY+PLAYER_HEIGHT) ) {
ImageIcon ii =
new ImageIcon(this.getClass().getResource(expl));
player.setImage(ii.getImage());
player.setDying(true);
b.setDestroyed(true);;
}
}

if (!b.isDestroyed()) {
b.setY(b.getY() + 1);
if (b.getY() >= GROUND - BOMB_HEIGHT) {
b.setDestroyed(true);
}
}
}
}

public void run() {

long beforeTime, timeDiff, sleep;

beforeTime = System.currentTimeMillis();

while (ingame) {
repaint();
animationCycle();

timeDiff = System.currentTimeMillis() - beforeTime;
sleep = DELAY - timeDiff;

if (sleep < 0)
sleep = 2;
try {
Thread.sleep(sleep);
} catch (InterruptedException e) {
System.out.println("interrupted");
}
beforeTime = System.currentTimeMillis();
}
gameOver();
}

private class TAdapter extends KeyAdapter {

public void keyReleased(KeyEvent e) {
player.keyReleased(e);
}

public void keyPressed(KeyEvent e) {

player.keyPressed(e);

int x = player.getX();
int y = player.getY();

if (ingame)
{
if (e.isAltDown()) {
if (!shot.isVisible())
shot = new Shot(x, y);
}
}
}
}
}


Can you help me, which of the above coding which is a class, attribute, method?
And can you help me explain the coding above?
Sorry if I bother, because I was still new in java.
Thanks for your help. It really helps me. :)

[Eranga]

Is this code written by you?

[Kenshei]

This is not my own coding. I picked it up from one of the web games that have been mentioned above, but I do not understand when my teacher asked to make a Class diagram.

Please help me Eranga if you do not mind. Thanks. :)

[Eranga]

Yes I can help you. But if you don't know what the class is and so on, it's bit of difficult.

Anyway, did you run the code at least once?