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‎SnakeGame$GameCycle.class‎

695 Bytes
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‎SnakeGame$MyKeyAdapter.class‎

794 Bytes
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‎SnakeGame.class‎

3.42 KB
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‎SnakeGame.java‎

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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.awt.event.KeyAdapter;
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import java.awt.event.KeyEvent;
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public class SnakeGame extends JFrame {
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private static final int WIDTH = 300;
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private static final int HEIGHT = 300;
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private static final int UNIT_SIZE = 10;
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private static final int GAME_UNITS = (WIDTH * HEIGHT) / UNIT_SIZE;
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private static final int DELAY = 140;
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private final int[] x = new int[GAME_UNITS];
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private final int[] y = new int[GAME_UNITS];
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private int bodyParts = 3;
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private int applesEaten;
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private int appleX;
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private int appleY;
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private char direction = 'R';
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private boolean running = false;
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private Timer timer;
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public SnakeGame() {
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setPreferredSize(new Dimension(WIDTH, HEIGHT));
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setBackground(Color.BLACK);
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setFocusable(true);
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addKeyListener(new MyKeyAdapter());
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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pack();
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setVisible(true);
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startGame();
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}
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private void startGame() {
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running = true;
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// Spawn the snake in the middle of the screen
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x[0] = WIDTH / 2 / UNIT_SIZE * UNIT_SIZE;
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y[0] = HEIGHT / 2 / UNIT_SIZE * UNIT_SIZE;
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placeApple();
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timer = new Timer(DELAY, new GameCycle());
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timer.start();
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}
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private void placeApple() {
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boolean validPosition = false;
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while (!validPosition) {
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appleX = (int) (Math.random() * ((WIDTH - UNIT_SIZE * 2) / UNIT_SIZE)) * UNIT_SIZE + UNIT_SIZE;
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appleY = (int) (Math.random() * ((HEIGHT - UNIT_SIZE * 2) / UNIT_SIZE)) * UNIT_SIZE + UNIT_SIZE;
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// Ensure apple is not on the snake's body
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validPosition = true;
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for (int i = 0; i < bodyParts; i++) {
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if (appleX == x[i] && appleY == y[i]) {
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validPosition = false;
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break;
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}
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}
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}
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}
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private void move() {
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for (int i = bodyParts; i > 0; i--) {
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x[i] = x[i - 1];
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y[i] = y[i - 1];
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}
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switch (direction) {
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case 'U':
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y[0] = y[0] - UNIT_SIZE;
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break;
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case 'D':
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y[0] = y[0] + UNIT_SIZE;
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break;
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case 'L':
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x[0] = x[0] - UNIT_SIZE;
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break;
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case 'R':
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x[0] = x[0] + UNIT_SIZE;
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break;
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}
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}
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private void checkApple() {
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if ((x[0] == appleX) && (y[0] == appleY)) {
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bodyParts++;
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applesEaten++;
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placeApple(); // Ensure apple is placed immediately after eating one
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}
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}
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private void checkCollisions() {
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// Remove self-collision check
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if (x[0] < 0 || x[0] >= WIDTH || y[0] < 0 || y[0] >= HEIGHT) {
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running = false;
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timer.stop();
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}
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}
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private void draw(Graphics g) {
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if (running) {
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g.setColor(Color.RED);
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g.fillOval(appleX, appleY, UNIT_SIZE, UNIT_SIZE);
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for (int i = 0; i < bodyParts; i++) {
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if (i == 0) {
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g.setColor(Color.GREEN);
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} else {
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g.setColor(new Color(45, 180, 0));
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}
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g.fillRect(x[i], y[i], UNIT_SIZE, UNIT_SIZE);
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}
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} else {
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gameOver(g);
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}
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}
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private void gameOver(Graphics g) {
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g.setColor(Color.RED);
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g.setFont(new Font("Helvetica", Font.BOLD, 40));
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FontMetrics metrics = getFontMetrics(g.getFont());
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g.drawString("Game Over", (WIDTH - metrics.stringWidth("Game Over")) / 2, HEIGHT / 2);
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// Display the reason for the game over
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g.setFont(new Font("Helvetica", Font.BOLD, 20));
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String message = "You hit the wall!";
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g.drawString(message, (WIDTH - metrics.stringWidth(message)) / 2, HEIGHT / 2 + 30);
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}
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private class GameCycle implements ActionListener {
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@Override
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public void actionPerformed(ActionEvent e) {
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if (running) {
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move();
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checkApple();
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checkCollisions();
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}
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repaint();
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}
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}
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private class MyKeyAdapter extends KeyAdapter {
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@Override
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public void keyPressed(KeyEvent e) {
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switch (e.getKeyCode()) {
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case KeyEvent.VK_LEFT:
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case KeyEvent.VK_A:
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if (direction != 'R') {
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direction = 'L';
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}
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break;
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case KeyEvent.VK_RIGHT:
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case KeyEvent.VK_D:
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if (direction != 'L') {
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direction = 'R';
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}
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break;
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case KeyEvent.VK_UP:
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case KeyEvent.VK_W:
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if (direction != 'D') {
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direction = 'U';
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}
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break;
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case KeyEvent.VK_DOWN:
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case KeyEvent.VK_S:
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if (direction != 'U') {
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direction = 'D';
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}
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break;
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}
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}
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}
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@Override
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public void paint(Graphics g) {
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super.paint(g);
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draw(g);
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}
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public static void main(String[] args) {
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new SnakeGame();
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}
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}

‎build.xml‎

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<project name="SnakeGame" basedir="." default="jar">
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<target name="clean">
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<delete dir="build"/>
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</target>
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<target name="compile">
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<mkdir dir="build/classes"/>
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<javac srcdir="." destdir="build/classes"/>
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</target>
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<target name="jar" depends="compile">
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<mkdir dir="build/jar"/>
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<jar destfile="build/jar/SnakeGame.jar" basedir="build/classes">
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<manifest>
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<attribute name="Main-Class" value="SnakeGame"/>
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</manifest>
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</jar>
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</target>
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</project>
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‎manifest.txt‎

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Main-Class: SnakeGame

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