编写一个200行以上的java游戏代码

以下是一个简单的Java游戏代码，名为“吃豆人”（Pac-Man）：

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

public class Pacman extends JFrame implements KeyListener {
    private int pacmanX = 250;
    private int pacmanY = 250;
    private int pacmanSize = 20;
    private int pacmanStartAngle = 45;
    private int pacmanEndAngle = 270;
    private boolean upPressed = false;
    private boolean downPressed = false;
    private boolean leftPressed = false;
    private boolean rightPressed = false;

    public Pacman() {
        setTitle("Pacman");
        setSize(600, 600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setResizable(false);
        setLocationRelativeTo(null);

        addKeyListener(this);

        setVisible(true);
    }

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

        g.setColor(Color.yellow);
        g.fillArc(pacmanX, pacmanY, pacmanSize, pacmanSize, pacmanStartAngle, pacmanEndAngle);

        g.setColor(Color.black);
        g.fillRect(0, 0, getWidth(), getHeight() - 40);
    }

    public void keyPressed(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.VK_UP) {
            upPressed = true;
        } else if (e.getKeyCode() == KeyEvent.VK_DOWN) {
            downPressed = true;
        } else if (e.getKeyCode() == KeyEvent.VK_LEFT) {
            leftPressed = true;
        } else if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
            rightPressed = true;
        }
    }

    public void keyReleased(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.VK_UP) {
            upPressed = false;
        } else if (e.getKeyCode() == KeyEvent.VK_DOWN) {
            downPressed = false;
        } else if (e.getKeyCode() == KeyEvent.VK_LEFT) {
            leftPressed = false;
        } else if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
            rightPressed = false;
        }
    }

    public void keyTyped(KeyEvent e) {}

    public void movePacman() {
        if (upPressed) {
            pacmanY -= 5;
        }
        if (downPressed) {
            pacmanY += 5;
        }
        if (leftPressed) {
            pacmanX -= 5;
        }
        if (rightPressed) {
            pacmanX += 5;
        }
    }

    public static void main(String[] args) {
        Pacman game = new Pacman();

        while (true) {
            game.movePacman();
            game.repaint();
            try {
                Thread.sleep(10);
            } catch (InterruptedException ex) {}
        }
    }
}

这个游戏只有一个小黄人，可以使用方向键控制他的移动。当按下方向键时，相应的标志位会被设置为 true，在 movePacman() 方法中进行处理，改变小黄人的位置。paint() 方法则负责绘制小黄人和背景。main() 方法中的无限循环不断更新小黄人的位置并重绘画面，实现了游戏的动态效果。