Este codigo es del juego snake me pareció muy interesante, me lo paso un amigo y lo quiero compartir con ustedes, interesante lo del punto al azar en el cuadro, funciona en jcreator y en netbeans
Esta clase se llama Snake
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
class Snake extends JFrame implements
KeyListener, Runnable {
JPanel p1, p2;
JButton[] lb = new JButton[200];
JButton bonusfood;
JTextArea t;
int x
= 500, y = 250, gu = 2, directionx = 1, directiony = 0, speed = 50, difference
= 0, oldx, oldy, score = 0;
int[]
lbx = new int[300];
int[]
lby = new int[300];
Point[] lbp = new Point[300];
Point
bfp = new Point();
Thread myt;
boolean
food = false, runl = false, runr = true, runu = true, rund = true, bonusflag =
true;
Random r = new Random();
JMenuBar mymbar;
JMenu
game, help, level;
public void initializeValues() {
gu
= 3;//para tamaño inicial del gusano
lbx[0] = 100;
lby[0] = 150;
directionx = 10;
directiony = 0;
difference = 0;
score = 0;
food = false;
runl = false;
runr = true;
runu = true;
rund = true;
bonusflag
= true;
}
Snake()
{
super("Snake");
setSize(500, 330);
//Create Menue bar with functions
creatbar();
//initialize all variables
initializeValues();
// Start of UI design
p1 = new JPanel();
p2 = new JPanel();
// t will view the score
t
= new JTextArea("Score ==>" + score);
t.setEnabled(false);
t.setBackground(Color.BLACK);
// snake have to eat bonousfood to growup
bonusfood = new JButton();
bonusfood.setEnabled(false);
// will make first snake
createFirstSnake();
p1.setLayout(null);
p2.setLayout(new GridLayout(0, 1));
p1.setBounds(0, 0, x, y);
p1.setBackground(Color.blue);
p2.setBounds(0, y, x, 30);
p2.setBackground(Color.RED);
p2.add(t); // will contain score board
// end of UI design
getContentPane().setLayout(null);
getContentPane().add(p1);
getContentPane().add(p2);
show();
setDefaultCloseOperation(EXIT_ON_CLOSE);
addKeyListener(this);
// start thread
myt = new Thread(this);
myt.start(); // go to run() method corremos el hilo
}
public
void createFirstSnake() {
// Initially the snake has small length 3
for (int i = 0; i < 3; i++) {
lb[i] = new JButton("lb" + i);
lb[i].setEnabled(false);
p1.add(lb[i]);
lb[i].setBounds(lbx[i],lby[i], 10, 10);//los botones se muestran
// en el marco con
valor inicial de lbx[0]=100 lby[0]=150 tamaño de 10x10)
lbx[i + 1] = lbx[i] -
10;
lby[i + 1] = lby[i];
}
}
public void creatbar() {
mymbar = new JMenuBar();
game = new JMenu("Game");
JMenuItem newgame = new JMenuItem("New Game");
JMenuItem exit = new JMenuItem("Exit");
newgame.addActionListener(
new ActionListener() {
public void
actionPerformed(ActionEvent e) {
reset();
}
});
exit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
game.add(newgame);
game.addSeparator();
game.add(exit);
mymbar.add(game);
level = new JMenu("Level");
mymbar.add(level);
help = new JMenu("Help");
JMenuItem
creator = new JMenuItem("Creator");
JMenuItem instruction = new JMenuItem("Instraction");
creator.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(p2, "Name :tu ");
}
});
help.add(creator);
help.add(instruction);
mymbar.add(help);
setJMenuBar(mymbar);
}
void
reset() {
initializeValues();
p1.removeAll();
myt.stop();
createFirstSnake();
t.setText("Score==>" + score);
myt = new Thread(this);
myt.start();
}
void
growup() {//crecer
lb[gu] = new JButton();
lb[gu].setEnabled(false);
p1.add(lb[gu]);
//para aparecer al
azar un punto en el cuadro
int a = 10 + (10 *
r.nextInt(48));//ramdom para x
int b = 10 + (10 * r.nextInt(23));//ramdom para y
System.out.print("\nx"+a);
System.out.print("\ny"+b);
lbx[gu]
= a;
lby[gu] = b;
lb[gu].setBounds(a, b, 10, 10);
gu++;
}
//
this method contains the logic to move the snake. player will define the
derection
//
this method just forward the snake to the right derection which deriction is
pressed
// by
the player.
void
moveForward() {
for
(int i = 0; i < gu; i++) {// o123 en total 4 pociciones dependiendo si no
creece gu
lbp[i] =
lb[i].getLocation();
System.out.print("\nlbp i=0 1<3 i++"+lbp[i]);
System.out.print("\nlb "+lb[i]);
}
lbx[0] += directionx;//incrementa de 10
en10 en 10
System.out.print("\nlbx"+lbx[0]);
lby[0] += directiony;
System.out.print("\nlby"+lby[0]);
lb[0].setBounds(lbx[0], lby[0], 10, 10);
for (int i = 1; i < gu; i++) {
lb[i].setLocation(lbp[i-1 ]);//quitara la ultima pocicion de las
4 botones
System.out.print("\nlb
1<3 i++ i-1"+lb[i]);
}
//cuando llega al final
inicia en el otro lado
if (lbx[0] == x) {
lbx[0] = 10;
//
System.out.print("\nvector botones llego a la pared x=500"+x);
}
else if (lbx[0] == 0) {
lbx[0] = x - 10;
}
else if (lby[0] == y) {
lby[0] = 10;
//
System.out.print("\nvector botones llego a la pared x="+y);
} else if (lby[0] ==
0) {
lby[0] = y - 10;
}
if (lbx[0] == lbx[gu - 1] && lby[0] == lby[gu - 1]) {
food = false;
score += 5;
t.setText("Score==>" + score);
if (score % 50 == 0 && bonusflag == true) {
p1.add(bonusfood);
bonusfood.setBounds((10 * r.nextInt(50)), (10 * r.nextInt(25)), 15, 15);
bfp = bonusfood.getLocation();
bonusflag = false;
}
}
if (bonusflag == false) {
if (bfp.x <= lbx[0] && bfp.y <= lby[0] && bfp.x +
10 >= lbx[0] && bfp.y + 10 >= lby[0]) {
p1.remove(bonusfood);
score += 100;
t.setText("Score ==>" + score);
bonusflag = true;
}
}
if (food == false) {
growup();
food = true;
}
else {
lb[gu - 1].setBounds(lbx[gu - 1], lby[gu - 1], 10, 10);
}
for (int i = 1; i < gu; i++) {
if (lbp[0] == lbp[i]) {
t.setText("GAME OVER "
+ score);
try {
myt.join();
} catch (InterruptedException ie) {
}
break;
}
}
p1.repaint();
show();
}
public void keyPressed(KeyEvent e) {
//KeyCode()
== 37 cada numero significa una tecla de direccion
// snake move to left
when player pressed left arrow
if (runl == true && e.getKeyCode() == 37) {
directionx = -10; // means snake move right to left by 10pixels
directiony = 0;
runr = false; // run
right(runr) means snake cant move from left to right
runu = true; // run up (runu) means snake can move from down to up
rund = true; // run down (run
down) means snake can move from up to down
}
// snake move to up when player pressed up arrow
if (runu == true && e.getKeyCode() == 38) {
directionx = 0;
directiony = -10; // means snake move from down to up by 10 pixel
rund = false; // run down (run
down) means snake can move from up to down
runr = true; // run
right(runr) means snake can move from left to right
runl = true; // run left
(runl) means snake can move from right to left
}
// snake move to right when player pressed right arrow
if (runr == true && e.getKeyCode() == 39) {
directionx = +10; // means snake move from left to right by 10 pixel
directiony = 0;
runl = false;
runu = true;
rund = true;
}
// snake move to down when player pressed down arrow
if (rund == true && e.getKeyCode() == 40) {
directionx = 0;
directiony = +10; // means snake move from left to right by 10 pixel
runu = false;
runr = true;
runl = true;
}
}
public void keyReleased(KeyEvent e) {
}
public void keyTyped(KeyEvent e) {
}
public void run() {
for (;;) {
// Move the snake move forword. In the start of the game snake move left
to right,
// if player press up, down, right or left arrow snake change its
direction according to
// pressed arrow
moveForward();
try {
Thread.sleep(speed);
} catch (InterruptedException ie) {
}
}
}
}
Esta esta es la clase principal para que funcione, Main.java
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
new Snake();
}
}
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