写一段java代码的飞机大战游戏

很高兴为您提供Java代码的飞机大战游戏。

首先，您需要创建一个名为“PlaneWar”的Java项目，并在其中创建一个名为“GameFrame”的Java类，用于设置游戏界面。代码如下：

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

public class GameFrame extends JFrame {
    public static final int WIDTH = 500;
    public static final int HEIGHT = 500;
    private JPanel gamePanel;

    public GameFrame() {
        setTitle("Plane War");
        setSize(WIDTH, HEIGHT);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setResizable(false);

        gamePanel = new JPanel();
        gamePanel.setBackground(Color.BLACK);
        gamePanel.setPreferredSize(new Dimension(WIDTH, HEIGHT));

        add(gamePanel);
        setVisible(true);
    }
}

接下来，您需要创建名为“Plane”的Java类，用于设置飞机的属性和方法。代码如下：

import java.awt.*;

public class Plane {
    private int x, y;
    private int speed;
    private Image image;

    public Plane(int x, int y, int speed, String imagePath) {
        this.x = x;
        this.y = y;
        this.speed = speed;
        this.image = Toolkit.getDefaultToolkit().getImage(imagePath);
    }

    public void moveUp() {
        if (y > 0) {
            y -= speed;
        }
    }

    public void moveDown() {
        if (y < GameFrame.HEIGHT - image.getHeight(null)) {
            y += speed;
        }
    }

    public void moveLeft() {
        if (x > 0) {
            x -= speed;
        }
    }

    public void moveRight() {
        if (x < GameFrame.WIDTH - image.getWidth(null)) {
            x += speed;
        }
    }

    public void draw(Graphics g) {
        g.drawImage(image, x, y, null);
    }

    public Rectangle getRectangle() {
        return new Rectangle(x, y, image.getWidth(null), image.getHeight(null));
    }
}

然后，您需要创建名为“Bullet”的Java类，用于设置子弹的属性和方法。代码如下：

import java.awt.*;

public class Bullet {
    private int x, y;
    private int speed;
    private Image image;

    public Bullet(int x, int y, int speed, String imagePath) {
        this.x = x;
        this.y = y;
        this.speed = speed;
        this.image = Toolkit.getDefaultToolkit().getImage(imagePath);
    }

    public void move() {
        y -= speed;
    }

    public void draw(Graphics g) {
        g.drawImage(image, x, y, null);
    }

    public Rectangle getRectangle() {
        return new Rectangle(x, y, image.getWidth(null), image.getHeight(null));
    }
}

最后，在“GameFrame”类中添加以下代码来完善游戏：

import java.awt.*;
import java.util.ArrayList;

public class GameFrame extends JFrame {
    ...

    private Plane myPlane;
    private ArrayList<Bullet> bullets;
    private Image background;

    public GameFrame() {
        ...

        myPlane = new Plane(WIDTH / 2, HEIGHT - 100, 5, "plane.png");
        bullets = new ArrayList<>();
        background = Toolkit.getDefaultToolkit().getImage("background.png");

        addKeyListener(new GameKeyListener());
        new Thread(new GameThread()).start();
    }

    private void drawGamePanel(Graphics g) {
        g.drawImage(background, 0, 0, null);
        myPlane.draw(g);
        for (Bullet bullet : bullets) {
            bullet.draw(g);
        }
    }

    private void moveGameElements() {
        for (Bullet bullet : bullets) {
            bullet.move();
        }
    }

    ...

    private class GameThread implements Runnable {
        @Override
        public void run() {
            while (true) {
                try {
                    Thread.sleep(10);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                moveGameElements();
                gamePanel.repaint();
            }
        }
    }

    private class GameKeyListener implements KeyListener {
        @Override
        public void keyTyped(KeyEvent e) {}

        @Override
        public void keyPressed(KeyEvent e) {
            switch (e.getKeyCode()) {
                case KeyEvent.VK_UP:
                    myPlane.moveUp();
                    break;
                case KeyEvent.VK_DOWN:
                    myPlane.moveDown();
                    break;
                case KeyEvent.VK_LEFT:
                    myPlane.moveLeft();
                    break;
                case KeyEvent.VK_RIGHT:
                    myPlane.moveRight();
                    break;
                case KeyEvent.VK_SPACE:
                    bullets.add(new Bullet(myPlane.getRectangle().x + myPlane.getRectangle().width / 2 - 10, myPlane.getRectangle().y - 30, 10, "bullet.png"));
                    break;
            }
        }

        @Override
        public void keyReleased(KeyEvent e) {}
    }
}

现在，您可以在“PlaneWar”项目中添加“plane.png”、“bullet.png”和“background.png”等游戏素材，运行“GameFrame”类，即可玩飞机大战游戏了。