Java躲避雪花小游戏代码

好的，以下是一个简单的Java躲避雪花小游戏代码，希望能够帮助到您：

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class DodgeSnow extends JPanel implements KeyListener {

    private static final long serialVersionUID = 1L;
    private static final int WIDTH = 500;
    private static final int HEIGHT = 500;
    private static final int PLAYER_SIZE = 20;
    private static final int SNOW_SIZE = 10;
    private static final int MAX_SNOW = 100;
    private static final int PLAYER_SPEED = 5;

    private int playerX = WIDTH / 2;
    private int playerY = HEIGHT / 2;
    private List<Rectangle> snowflakes = new ArrayList<Rectangle>();
    private Random rand = new Random();

    public DodgeSnow() {
        JFrame frame = new JFrame("Dodge Snow");
        frame.setSize(WIDTH, HEIGHT);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
        frame.addKeyListener(this);
        frame.add(this);
        frame.setVisible(true);

        generateSnowflakes();
        gameLoop();
    }

    private void generateSnowflakes() {
        for (int i = 0; i < MAX_SNOW; i++) {
            int x = rand.nextInt(WIDTH);
            int y = rand.nextInt(HEIGHT);
            snowflakes.add(new Rectangle(x, y, SNOW_SIZE, SNOW_SIZE));
        }
    }

    private void gameLoop() {
        while (true) {
            movePlayer();
            moveSnowflakes();
            checkCollisions();
            repaint();
            sleep(50);
        }
    }

    private void movePlayer() {
        if (isKeyPressed(KeyEvent.VK_UP)) {
            playerY -= PLAYER_SPEED;
        }
        if (isKeyPressed(KeyEvent.VK_DOWN)) {
            playerY += PLAYER_SPEED;
        }
        if (isKeyPressed(KeyEvent.VK_LEFT)) {
            playerX -= PLAYER_SPEED;
        }
        if (isKeyPressed(KeyEvent.VK_RIGHT)) {
            playerX += PLAYER_SPEED;
        }
        playerX = Math.max(0, playerX);
        playerX = Math.min(WIDTH - PLAYER_SIZE, playerX);
        playerY = Math.max(0, playerY);
        playerY = Math.min(HEIGHT - PLAYER_SIZE, playerY);
    }

    private void moveSnowflakes() {
        for (Rectangle snowflake : snowflakes) {
            snowflake.y += rand.nextInt(5) + 1;
            if (snowflake.y > HEIGHT) {
                snowflake.y = 0;
                snowflake.x = rand.nextInt(WIDTH);
            }
        }
    }

    private void checkCollisions() {
        Rectangle playerRect = new Rectangle(playerX, playerY, PLAYER_SIZE, PLAYER_SIZE);
        for (Rectangle snowflake : snowflakes) {
            if (playerRect.intersects(snowflake)) {
                playerX = WIDTH / 2;
                playerY = HEIGHT / 2;
                break;
            }
        }
    }

    private boolean isKeyPressed(int keyCode) {
        return keys[keyCode];
    }

    private void sleep(int millis) {
        try {
            Thread.sleep(millis);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.setColor(Color.WHITE);
        g.fillRect(0, 0, WIDTH, HEIGHT);
        g.setColor(Color.BLUE);
        g.fillRect(playerX, playerY, PLAYER_SIZE, PLAYER_SIZE);
        g.setColor(Color.WHITE);
        for (Rectangle snowflake : snowflakes) {
            g.fillRect(snowflake.x, snowflake.y, SNOW_SIZE, SNOW_SIZE);
        }
    }

    private boolean[] keys = new boolean[256];

    @Override
    public void keyPressed(KeyEvent e) {
        keys[e.getKeyCode()] = true;
    }

    @Override
    public void keyReleased(KeyEvent e) {
        keys[e.getKeyCode()] = false;
    }

    @Override
    public void keyTyped(KeyEvent e) {
    }

    public static void main(String[] args) {
        new DodgeSnow();
    }

}

该游戏的规则是，玩家需要通过控制一个小方块来躲避从顶部飞落下来的雪花，如果玩家碰到了任何一个雪花，游戏就会结束。玩家可以使用方向键来控制小方块的移动。