目录
基础版本
https://blog.csdn.net/timberman666/article/details/131046742?spm=1001.2014.3001.5501新增内容
1.添加START开始界面
点击空格Space即刻开始游戏
2.新增背景音乐
从游戏开始即可尽享音乐直至游戏结束
3.添加SCORE计分
对贪吃蛇吃掉苹果计入分数
4.新增游戏机制
在贪吃蛇超出界面死亡机制基础上增加 贪吃蛇首尾相遇也会判定死亡
代码实现
import java.awt.*;
import java.awt.event.*;
import java.awt.font.TextLayout;
import javax.swing.*;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
import java.io.File;
import java.io.IOException;
import java.net.URL;
public class SnakeGame extends JFrame implements ActionListener {
private static final long serialVersionUID = 1L;
private boolean gameStarted = false;
// 定义游戏区域的大小
private final int WIDTH = 640;
private final int HEIGHT = 640;
// 定义贪吃蛇的初始位置和大小
private final int DOT_SIZE = 10;
private final int ALL_DOTS = 900;
private final int RAND_POS = 30;
private int[] x = new int[ALL_DOTS];
private int[] y = new int[ALL_DOTS];
private int dots;
private int apple_x;
private int apple_y;
private int score = 0;
// 定义贪吃蛇的移动方向
private boolean leftDirection = false;
private boolean rightDirection = true;
private boolean upDirection = false;
private boolean downDirection = false;
// 定义游戏是否结束
private boolean inGame = true;
// 定义计时器
private Timer timer;
private void loadAudio() {
try {
String temp="C:/Users/timberman/Desktop/disco.wav";
AudioInputStream audioIn = AudioSystem.getAudioInputStream(new File(temp));
Clip clip = AudioSystem.getClip();
clip.open(audioIn);
clip.loop(Clip.LOOP_CONTINUOUSLY);
} catch (UnsupportedAudioFileException | IOException | LineUnavailableException e) {
e.printStackTrace();
} catch (NullPointerException e) {
System.err.println("Error: audio file not found or could not be loaded.");
}
}
public SnakeGame() {
initGame();
addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
if (key == KeyEvent.VK_LEFT && !rightDirection) {
leftDirection = true;
upDirection = false;
downDirection = false;
} else if (key == KeyEvent.VK_RIGHT && !leftDirection) {
rightDirection = true;
upDirection = false;
downDirection = false;
} else if (key == KeyEvent.VK_UP && !downDirection) {
upDirection = true;
leftDirection = false;
rightDirection = false;
} else if (key == KeyEvent.VK_DOWN && !upDirection) {
downDirection = true;
leftDirection = false;
rightDirection = false;
}
}
});
setFocusable(true);
}
public void initGame() {
loadAudio();
// Initialize game area
setTitle("SnakeGame");
setSize(WIDTH, HEIGHT);
setResizable(false);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setVisible(true);
getContentPane().setBackground(Color.black);
// Add start screen
JLabel startLabel = new JLabel("Press the space bar to start the game");
startLabel.setForeground(Color.white);
startLabel.setBackground(Color.black);
startLabel.setFont(new Font("Helvetica", Font.BOLD, 20));
startLabel.setHorizontalAlignment(JLabel.CENTER);
startLabel.setVerticalAlignment(JLabel.CENTER);
add(startLabel);
// Initialize snake and apple positions
dots = 3;
for (int i = 0; i < dots; i++) {
x[i] = 50 - i * DOT_SIZE;
y[i] = 50;
}
locateApple();
// Initialize timer
timer = new Timer(140, this);
// Add key listener to start game
addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
if (key == KeyEvent.VK_SPACE && !gameStarted) {
// Remove start screen
remove(startLabel);
gameStarted = true;
// Start timer
timer.start();
}
}
});
score = 0;
}
public void locateApple() {
// 随机生成苹果的位置
int r = (int) (Math.random() * RAND_POS);
apple_x = r * DOT_SIZE;
r = (int) (Math.random() * (RAND_POS/2)); // limit apple to top half of game area
apple_y = r * DOT_SIZE;
}
public void checkApple() {
// 检查贪吃蛇是否吃到了苹果
if ((x[0] == apple_x) && (y[0] == apple_y)) {
dots++;
locateApple();
score++;
setTitle("SnakeGame - Score: " + score);
}
}
public void checkCollision() {
// 检查贪吃蛇是否碰到了边界或自己的身体
for (int i = dots; i > 0; i--) {
if ((i > 4) && (x[0] == x[i]) && (y[0] == y[i])) {
inGame = false;
}
}
if (y[0] >= HEIGHT) {
inGame = false;
}
if (y[0] < 0) {
inGame = false;
}
if (x[0] >= WIDTH) {
inGame = false;
}
if (x[0] < 0) {
inGame = false;
}
if (!inGame) {
timer.stop();
}
}
public void move() {
// 移动贪吃蛇
for (int i = dots; i > 0; i--) {
x[i] = x[(i - 1)];
y[i] = y[(i - 1)];
}
if (leftDirection) {
x[0] -= DOT_SIZE;
}
if (rightDirection) {
x[0] += DOT_SIZE;
}
if (upDirection) {
y[0] -= DOT_SIZE;
}
if (downDirection) {
y[0] += DOT_SIZE;
}
}
public void actionPerformed(ActionEvent e) {
// 计时器触发事件
if (inGame) {
checkApple();
checkCollision();
move();
repaint(); // 重绘游戏区域
}
}
public void paint(Graphics g) {
// 绘制游戏区域
super.paint(g);
if (inGame) {
g.setColor(Color.red);
g.fillOval(apple_x, apple_y, DOT_SIZE, DOT_SIZE);
for (int i = 0; i < dots; i++) {
g.setColor(Color.green);
g.fillRect(x[i], y[i], DOT_SIZE, DOT_SIZE);
}
g.setColor(Color.black);
Toolkit.getDefaultToolkit().sync();
} else {
gameOver(g);
}
}
public void gameOver(Graphics g) {
// 游戏结束
String msg = "GAME OVER";
Font small = new Font("Helvetica", Font.BOLD, 40);
FontMetrics metr = getFontMetrics(small);
g.setColor(Color.white);
g.setFont(small);
g.drawString(msg, (WIDTH - metr.stringWidth(msg)) / 2, HEIGHT / 2);
String scoreMsg = "Final Score: " + score;
Font smallScore = new Font("Helvetica", Font.BOLD, 20);
FontMetrics scoreMetr = getFontMetrics(smallScore);
g.setFont(smallScore);
g.drawString(scoreMsg, (WIDTH - scoreMetr.stringWidth(scoreMsg)) / 2, HEIGHT / 2 + 50);
}
public static void main(String[] args) {
new SnakeGame();
}
}实机演示
贪吃蛇PLUS版