Snake/Java: Difference between revisions
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Line 1:
An good Snake Game by IZzSaken
edited on 21th May 2023
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class SnakeGame extends JPanel implements ActionListener {
private static final int
private static final int
private static final int UNIT_SIZE = 10;
private static final int GAME_UNITS = (WIDTH * HEIGHT) / (UNIT_SIZE * UNIT_SIZE);
private static final int DELAY = 75;
private final int[] x = new int[GAME_UNITS];
private final int[] y = new int[GAME_UNITS];
private int bodyParts = 6;
private int applesEaten;
private int appleX;
private int appleY;
private char direction = 'R';
private boolean running = false;
private Timer timer;
public SnakeGame() {
setPreferredSize(new Dimension(WIDTH, HEIGHT));
setBackground(Color.BLACK);
setFocusable(true);
addKeyListener(new MyKeyAdapter());
}
private void startGame() {
newApple();
running = true;
timer = new Timer(DELAY, this);
timer.start();
}
@Override
public void paintComponent(Graphics g) {
draw(g);
}
private void
g.setColor(Color.RED);
g.fillOval(appleX, appleY, UNIT_SIZE, UNIT_SIZE);
for (int i = 0; i < bodyParts; i++) {
if (
g.fillRect(x[i], y[i], UNIT_SIZE, UNIT_SIZE);
g.setColor(new Color(45, 180, 0));
g.fillRect(x[i], y[i], UNIT_SIZE, UNIT_SIZE);
}
}
g.setColor(Color.WHITE);
g.setFont(new Font("Arial", Font.BOLD, 14));
FontMetrics metrics = getFontMetrics(g.getFont());
g.drawString("Score: " + applesEaten, (WIDTH - metrics.stringWidth("Score: " + applesEaten)) / 2, g.getFont().getSize());
} else {
gameOver(g);
}
}
appleX = (int) (Math.random() * (WIDTH / UNIT_SIZE)) * UNIT_SIZE;
appleY = (int) (Math.random() * (HEIGHT / UNIT_SIZE)) * UNIT_SIZE;
}
for (int i = bodyParts; i > 0; i--) {
x[0] = x[0] - UNIT_SIZE;
break;
case 'R':
x[0] = x[0] + UNIT_SIZE;
break;
}
}
private void
if ((x[0] == appleX) && (y[0] == appleY)) {
applesEaten++;
newApple();
}
}
private void
for
}
// Check if head touches left border
// Check if head touches right border
if (
running = false;
}
// Check if head touches top border
}
// Check if head touches bottom border
}
if (!running) {
}
private void
g.setColor(Color.
g.setFont(
FontMetrics metrics1 = getFontMetrics(g.getFont());
g.drawString("Game Over", (WIDTH - metrics1.stringWidth("Game Over")) / 2, HEIGHT / 2);
g.setColor(Color.WHITE);
g.setFont(new Font("Arial", Font.BOLD, 14));
FontMetrics metrics2 = getFontMetrics(g.getFont());
g.drawString("Score: " + applesEaten, (WIDTH - metrics2.stringWidth("Score: " + applesEaten)) / 2, g.getFont().getSize());
}
@Override
public void
checkApple();
}
}
private class MyKeyAdapter extends KeyAdapter {
public
if (direction != 'R') {
direction = 'L';
}
break;
case KeyEvent.VK_RIGHT:
if (direction != 'L') {
direction = 'R';
}
break;
case KeyEvent.VK_UP:
if (direction != 'D') {
direction = 'U';
}
break;
case KeyEvent.VK_DOWN:
if (direction != 'U') {
direction = 'D';
}
break;
}
}
}
public static void main(String[] args) {
JFrame frame = new JFrame("Snake Game");
SnakeGame
frame.setLocationRelativeTo(null);
}
}
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Latest revision as of 19:50, 21 May 2023
An good Snake Game by IZzSaken
edited on 21th May 2023
import java.awt.*; import java.awt.event.*; import javax.swing.*;
public class SnakeGame extends JPanel implements ActionListener {
private static final int WIDTH = 300; private static final int HEIGHT = 300; private static final int UNIT_SIZE = 10; private static final int GAME_UNITS = (WIDTH * HEIGHT) / (UNIT_SIZE * UNIT_SIZE); private static final int DELAY = 75;
private final int[] x = new int[GAME_UNITS]; private final int[] y = new int[GAME_UNITS]; private int bodyParts = 6; private int applesEaten; private int appleX; private int appleY; private char direction = 'R'; private boolean running = false; private Timer timer;
public SnakeGame() { setPreferredSize(new Dimension(WIDTH, HEIGHT)); setBackground(Color.BLACK); setFocusable(true); addKeyListener(new MyKeyAdapter()); startGame(); }
private void startGame() { newApple(); running = true; timer = new Timer(DELAY, this); timer.start(); }
@Override public void paintComponent(Graphics g) { super.paintComponent(g); draw(g); }
private void draw(Graphics g) { if (running) { g.setColor(Color.RED); g.fillOval(appleX, appleY, UNIT_SIZE, UNIT_SIZE);
for (int i = 0; i < bodyParts; i++) { if (i == 0) { g.setColor(Color.GREEN); g.fillRect(x[i], y[i], UNIT_SIZE, UNIT_SIZE); } else { g.setColor(new Color(45, 180, 0)); g.fillRect(x[i], y[i], UNIT_SIZE, UNIT_SIZE); } }
g.setColor(Color.WHITE); g.setFont(new Font("Arial", Font.BOLD, 14)); FontMetrics metrics = getFontMetrics(g.getFont()); g.drawString("Score: " + applesEaten, (WIDTH - metrics.stringWidth("Score: " + applesEaten)) / 2, g.getFont().getSize()); } else { gameOver(g); } }
private void newApple() { appleX = (int) (Math.random() * (WIDTH / UNIT_SIZE)) * UNIT_SIZE; appleY = (int) (Math.random() * (HEIGHT / UNIT_SIZE)) * UNIT_SIZE; }
private void move() { for (int i = bodyParts; i > 0; i--) { x[i] = x[i - 1]; y[i] = y[i - 1]; }
switch (direction) { case 'U': y[0] = y[0] - UNIT_SIZE; break; case 'D': y[0] = y[0] + UNIT_SIZE; break; case 'L': x[0] = x[0] - UNIT_SIZE; break; case 'R': x[0] = x[0] + UNIT_SIZE; break; } }
private void checkApple() { if ((x[0] == appleX) && (y[0] == appleY)) { bodyParts++; applesEaten++; newApple(); } }
private void checkCollisions() { // Check if head collides with body for (int i = bodyParts; i > 0; i--) { if ((x[0] == x[i]) && (y[0] == y[i])) { running = false; } }
// Check if head touches left border if (x[0] < 0) { running = false; }
// Check if head touches right border if (x[0] >= WIDTH) { running = false; }
// Check if head touches top border if (y[0] < 0) { running = false; }
// Check if head touches bottom border if (y[0] >= HEIGHT) { running = false; }
if (!running) { timer.stop(); } }
private void gameOver(Graphics g) { g.setColor(Color.WHITE); g.setFont(new Font("Arial", Font.BOLD, 20)); FontMetrics metrics1 = getFontMetrics(g.getFont()); g.drawString("Game Over", (WIDTH - metrics1.stringWidth("Game Over")) / 2, HEIGHT / 2);
g.setColor(Color.WHITE); g.setFont(new Font("Arial", Font.BOLD, 14)); FontMetrics metrics2 = getFontMetrics(g.getFont()); g.drawString("Score: " + applesEaten, (WIDTH - metrics2.stringWidth("Score: " + applesEaten)) / 2, g.getFont().getSize()); }
@Override public void actionPerformed(ActionEvent e) { if (running) { move(); checkApple(); checkCollisions(); } repaint(); }
private class MyKeyAdapter extends KeyAdapter { @Override public void keyPressed(KeyEvent e) { switch (e.getKeyCode()) { case KeyEvent.VK_LEFT: if (direction != 'R') { direction = 'L'; } break; case KeyEvent.VK_RIGHT: if (direction != 'L') { direction = 'R'; } break; case KeyEvent.VK_UP: if (direction != 'D') { direction = 'U'; } break; case KeyEvent.VK_DOWN: if (direction != 'U') { direction = 'D'; } break; } } }
public static void main(String[] args) { JFrame frame = new JFrame("Snake Game"); SnakeGame game = new SnakeGame(); frame.add(game); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setResizable(false); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); }
}