parent
dfc3823072
commit
84f19cd434
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package tanchishe;
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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.KeyEvent;
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import java.awt.event.KeyListener;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Random;
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public class SnakeGame extends JFrame {
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// 主界面
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private JPanel mainPanel;
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private JButton startButton;
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private JComboBox<String> difficultyComboBox;
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private JComboBox<String> modeComboBox;
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// 游戏界面
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private GamePanel gamePanel;
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public SnakeGame() {
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setTitle("贪吃蛇游戏");
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setSize(600, 600);
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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setLocationRelativeTo(null);
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// 初始化主界面
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initMainPanel();
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add(mainPanel);
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setVisible(true);
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}
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private void initMainPanel() {
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mainPanel = new JPanel();
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mainPanel.setLayout(new GridLayout(3, 1));
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// 难度选择
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JPanel difficultyPanel = new JPanel();
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difficultyPanel.add(new JLabel("选择难度:"));
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String[] difficulties = {"简单", "困难", "地狱"};
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difficultyComboBox = new JComboBox<>(difficulties);
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difficultyPanel.add(difficultyComboBox);
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mainPanel.add(difficultyPanel);
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// 模式选择
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JPanel modePanel = new JPanel();
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modePanel.add(new JLabel("选择模式:"));
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String[] modes = {"穿墙模式", "撞墙模式"};
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modeComboBox = new JComboBox<>(modes);
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modePanel.add(modeComboBox);
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mainPanel.add(modePanel);
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// 开始按钮
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startButton = new JButton("开始游戏");
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startButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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// 获取用户选择的难度和模式
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String difficulty = (String) difficultyComboBox.getSelectedItem();
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String mode = (String) modeComboBox.getSelectedItem();
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// 切换到游戏界面
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mainPanel.setVisible(false);
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gamePanel = new GamePanel(difficulty, mode);
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add(gamePanel);
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gamePanel.setVisible(true);
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gamePanel.requestFocus(); // 让游戏面板获取焦点，以便接收键盘事件
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}
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});
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mainPanel.add(startButton);
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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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}
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class GamePanel extends JPanel implements KeyListener, Runnable {
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private static final int WIDTH = 600;
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private static final int HEIGHT = 600;
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private static final int UNIT_SIZE = 20;
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private static final int GAME_UNITS = (WIDTH * HEIGHT) / (UNIT_SIZE * UNIT_SIZE);
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private final List<Point> snake = new ArrayList<>();
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private Point food;
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private int direction = KeyEvent.VK_RIGHT; // 初始方向向右
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private boolean running = false;
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private int score = 0;
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private int delay; // 控制蛇的移动速度
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private boolean wallCollision; // 是否开启撞墙模式
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public GamePanel(String difficulty, String mode) {
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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(this);
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// 根据难度设置蛇的移动速度
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switch (difficulty) {
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case "简单":
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delay = 150;
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break;
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case "困难":
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delay = 100;
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break;
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case "地狱":
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delay = 50;
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break;
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}
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// 根据模式设置是否开启撞墙模式
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wallCollision = mode.equals("撞墙模式");
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startGame();
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}
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public void startGame() {
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snake.clear();
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snake.add(new Point(WIDTH / 2, HEIGHT / 2)); // 初始化蛇的起始位置
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generateFood();
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running = true;
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new Thread(this).start();
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}
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public void generateFood() {
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Random random = new Random();
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int x = random.nextInt(WIDTH / UNIT_SIZE) * UNIT_SIZE;
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int y = random.nextInt(HEIGHT / UNIT_SIZE) * UNIT_SIZE;
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food = new Point(x, y);
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// 确保食物不会生成在蛇的身体上
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while (snake.contains(food)) {
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x = random.nextInt(WIDTH / UNIT_SIZE) * UNIT_SIZE;
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y = random.nextInt(HEIGHT / UNIT_SIZE) * UNIT_SIZE;
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food = new Point(x, y);
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}
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}
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public void move() {
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Point head = snake.get(0);
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Point newHead = new Point(head);
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switch (direction) {
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case KeyEvent.VK_UP:
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newHead.y -= UNIT_SIZE;
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break;
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case KeyEvent.VK_DOWN:
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newHead.y += UNIT_SIZE;
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break;
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case KeyEvent.VK_LEFT:
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newHead.x -= UNIT_SIZE;
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break;
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case KeyEvent.VK_RIGHT:
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newHead.x += UNIT_SIZE;
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break;
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}
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// 穿墙模式：蛇穿过边界从另一侧出现
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if (!wallCollision) {
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if (newHead.x < 0) newHead.x = WIDTH - UNIT_SIZE;
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if (newHead.x >= WIDTH) newHead.x = 0;
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if (newHead.y < 0) newHead.y = HEIGHT - UNIT_SIZE;
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if (newHead.y >= HEIGHT) newHead.y = 0;
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}
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// 检查是否撞墙（撞墙模式下）
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if (wallCollision && (newHead.x < 0 || newHead.x >= WIDTH || newHead.y < 0 || newHead.y >= HEIGHT)) {
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running = false;
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return;
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}
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// 检查是否撞到自己
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if (snake.contains(newHead)) {
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running = false;
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return;
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}
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snake.add(0, newHead);
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// 检查是否吃到食物
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if (newHead.equals(food)) {
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score++;
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generateFood();
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} else {
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snake.remove(snake.size() - 1); // 如果没有吃到食物，移除蛇尾
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}
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}
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@Override
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public void paintComponent(Graphics g) {
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super.paintComponent(g);
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draw(g);
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}
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public void draw(Graphics g) {
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if (running) {
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// 绘制食物
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g.setColor(Color.RED);
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g.fillRect(food.x, food.y, UNIT_SIZE, UNIT_SIZE);
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// 绘制蛇
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for (Point p : snake) {
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g.setColor(Color.GREEN);
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g.fillRect(p.x, p.y, UNIT_SIZE, UNIT_SIZE);
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}
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// 绘制分数
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g.setColor(Color.WHITE);
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g.setFont(new Font("Arial", Font.BOLD, 20));
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g.drawString("Score: " + score, 10, 20);
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} else {
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gameOver(g);
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}
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}
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public void gameOver(Graphics g) {
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// 游戏结束界面
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g.setColor(Color.RED);
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g.setFont(new Font("Arial", Font.BOLD, 40));
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g.drawString("Game Over", WIDTH / 2 - 100, HEIGHT / 2);
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g.setFont(new Font("Arial", Font.BOLD, 20));
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g.drawString("Final Score: " + score, WIDTH / 2 - 80, HEIGHT / 2 + 40);
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}
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@Override
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public void run() {
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while (running) {
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move();
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repaint();
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try {
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Thread.sleep(delay);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}
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@Override
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public void keyPressed(KeyEvent e) {
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int key = e.getKeyCode();
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// 防止蛇反向移动
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if ((key == KeyEvent.VK_LEFT && direction != KeyEvent.VK_RIGHT) ||
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(key == KeyEvent.VK_RIGHT && direction != KeyEvent.VK_LEFT) ||
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(key == KeyEvent.VK_UP && direction != KeyEvent.VK_DOWN) ||
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(key == KeyEvent.VK_DOWN && direction != KeyEvent.VK_UP)) {
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direction = key;
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}
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}
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@Override
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public void keyReleased(KeyEvent e) {}
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@Override
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public void keyTyped(KeyEvent e) {}
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}
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