用java手写FlyBird

好的，我可以为您提供一个简单的Java程序来手写FlyBird游戏。以下是代码：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class FlyBird extends JPanel implements ActionListener, KeyListener {
    private Timer timer;
    private int birdX, birdY, velocity;
    private boolean gameOver;
    private int[] pipeX, pipeY, pipeHeight, pipeGap;
    private int score;

    public FlyBird() {
        setBackground(Color.WHITE);
        setPreferredSize(new Dimension(600, 400));
        setFocusable(true);
        addKeyListener(this);

        birdX = 100;
        birdY = 200;
        velocity = 0;
        gameOver = false;
        pipeX = new int[3];
        pipeY = new int[3];
        pipeHeight = new int[3];
        pipeGap = new int[3];
        score = 0;

        for (int i = 0; i < 3; i++) {
            pipeX[i] = 400 + i * 200;
            pipeY[i] = (int) (Math.random() * 200) + 50;
            pipeHeight[i] = (int) (Math.random() * 150) + 50;
            pipeGap[i] = 100;
        }

        timer = new Timer(30, this);
        timer.start();
    }

    public void paintComponent(Graphics g) {
        super.paintComponent(g);

        g.setColor(Color.GREEN);
        for (int i = 0; i < 3; i++) {
            g.fillRect(pipeX[i], 0, 50, pipeY[i]);
            g.fillRect(pipeX[i], pipeY[i] + pipeGap[i], 50, getHeight() - pipeY[i] - pipeGap[i]);
        }

        g.setColor(Color.RED);
        g.fillRect(birdX, birdY, 20, 20);

        g.setColor(Color.BLACK);
        g.setFont(new Font("Arial", Font.BOLD, 20));
        g.drawString("Score: " + score, 10, 30);

        if (gameOver) {
            g.setColor(Color.BLACK);
            g.setFont(new Font("Arial", Font.BOLD, 40));
            g.drawString("Game Over!", getWidth() / 2 - 100, getHeight() / 2 - 20);
        }
    }

    public void actionPerformed(ActionEvent e) {
        if (!gameOver) {
            birdY += velocity;
            velocity += 2;

            for (int i = 0; i < 3; i++) {
                pipeX[i] -= 5;
                if (pipeX[i] < -50) {
                    pipeX[i] = 600;
                    pipeY[i] = (int) (Math.random() * 200) + 50;
                    pipeHeight[i] = (int) (Math.random() * 150) + 50;
                    score++;
                }
                if (birdX + 20 > pipeX[i] && birdX < pipeX[i] + 50) {
                    if (birdY < pipeY[i] || birdY + 20 > pipeY[i] + pipeGap[i]) {
                        gameOver = true;
                    }
                }
            }

            if (birdY > getHeight()) {
                gameOver = true;
            }

            repaint();
        }
    }

    public void keyPressed(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.VK_SPACE) {
            velocity = -20;
        }
    }

    public void keyReleased(KeyEvent e) {}

    public void keyTyped(KeyEvent e) {}

    public static void main(String[] args) {
        JFrame frame = new JFrame("Fly Bird");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(new FlyBird());
        frame.pack();
        frame.setVisible(true);
    }
}

这段代码实现了一个基本的Flappy Bird游戏。您可以在JFrame中运行它，并通过按空格键来控制小鸟的上升。在游戏中，您需要通过一些管道来得分，但是如果碰到了管道或者掉落到画面下方，游戏就结束了。