用java写一个飞机大战小游戏，只要代码

### 回答1：
下面是一个简单的 Java 飞机大战小游戏的代码示例：

import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.KeyEvent;

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

public class PlaneGame extends JPanel {
    // 定义一个飞机对象
    private Plane plane;

    // 初始化窗口
    public void init() {
        plane = new Plane("plane.png", 250, 250);

        // 创建一个窗口
        JFrame frame = new JFrame("飞机大战");
        frame.add(this);
        frame.setSize(500, 500);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }

    // 绘制窗口内容的方法
    public void paint(Graphics g) {
        super.paint(g);
        g.drawImage(plane.getImage(), plane.getX(), plane.getY(), null);
    }

    public static void main(String[] args) {
        new PlaneGame().init();
    }
}

// 飞机类
class Plane {
    // 定义飞机图片
    private Image image;
    // 定义飞机的坐标
    private int x, y;

    public Plane(String imagePath, int x, int y) {
        // 初始化图片
        this.image = new ImageIcon(imagePath).getImage();
        this.x = x;
        this.y = y;
    }

    public Image getImage() {
        return image;
    }

    public void setImage(Image image) {
        this.image = image;
    }

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }
}

上面的代码实现了一个简单的 Java 飞机大战小游戏，其中定义了一个 PlaneGame 类，该类继承了 JPanel 类，并在其中定义了一个飞机对象。init() 方法用于初始化窗口，paint() 方

### 回答2：
以下是一个简单的飞机大战小游戏的Java代码：

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

public class AircraftGame extends JFrame {
    private final int FRAME_WIDTH = 400;
    private final int FRAME_HEIGHT = 600;
    private final int PLANE_WIDTH = 50;
    private final int PLANE_HEIGHT = 50;
    private final int ENEMY_WIDTH = 30;
    private final int ENEMY_HEIGHT = 30;

    private int planeX;
    private int planeY;

    private int enemyX;
    private int enemyY;

    public AircraftGame() {
        setTitle("飞机大战");
        setSize(FRAME_WIDTH, FRAME_HEIGHT);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setResizable(false);
        setVisible(true);

        planeX = FRAME_WIDTH / 2 - PLANE_WIDTH / 2;
        planeY = FRAME_HEIGHT - PLANE_HEIGHT;

        enemyX = (int) (Math.random() * (FRAME_WIDTH - ENEMY_WIDTH));
        enemyY = 0;

        addKeyListener(new KeyAdapter() {
            public void keyPressed(KeyEvent e) {
                int key = e.getKeyCode();

                if (key == KeyEvent.VK_LEFT) {
                    planeX -= 10;
                    if (planeX < 0) {
                        planeX = 0;
                    }
                } else if (key == KeyEvent.VK_RIGHT) {
                    planeX += 10;
                    if (planeX > FRAME_WIDTH - PLANE_WIDTH) {
                        planeX = FRAME_WIDTH - PLANE_WIDTH;
                    }
                }

                repaint();
            }
        });
    }

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

        g.setColor(Color.BLUE);
        g.fillRect(planeX, planeY, PLANE_WIDTH, PLANE_HEIGHT);

        g.setColor(Color.RED);
        g.fillRect(enemyX, enemyY, ENEMY_WIDTH, ENEMY_HEIGHT);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new AircraftGame();
            }
        });
    }
}

这是一个基于Java的飞机大战小游戏代码。游戏窗口大小为400x600像素，玩家控制的飞机为50x50像素的蓝色矩形，敌机为30x30像素的红色矩形。玩家可以通过键盘的左右键控制飞机的移动，飞机只能在窗口内移动，不能超出边界。游戏中敌机会从顶部随机位置下降，玩家需要通过控制飞机避开敌机。游戏仅提供简单的基本功能，可以根据需要进行扩展和改进。

### 回答3：
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
import java.util.List;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class AirplaneGame extends JPanel {

private Image background, playerImage, enemyImage;
private int playerX, playerY, playerSpeed;
private List<Integer> enemyX, enemyY, enemySpeed;

public AirplaneGame() {
background = new ImageIcon("background.jpg").getImage();
playerImage = new ImageIcon("player.png").getImage();
enemyImage = new ImageIcon("enemy.png").getImage();
playerX = 400;
playerY = 550;
playerSpeed = 5;
enemyX = new ArrayList<>();
enemyY = new ArrayList<>();
enemySpeed = new ArrayList<>();

for (int i = 0; i < 5; i++) {
enemyX.add((int) (Math.random() * 750));
enemyY.add((int) (Math.random() * 300));
enemySpeed.add((int) (Math.random() * 5) + 1);
}

setPreferredSize(new Dimension(800, 600));
setBackground(Color.black);
setFocusable(true);
addKeyListener(new KeyListener() {
@Override
public void keyTyped(KeyEvent e) {}

@Override
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();

if (keyCode == KeyEvent.VK_LEFT) {
if (playerX > 0) playerX -= playerSpeed;
}
if (keyCode == KeyEvent.VK_RIGHT) {
if (playerX < 750) playerX += playerSpeed;
}
if (keyCode == KeyEvent.VK_UP) {
if (playerY > 0) playerY -= playerSpeed;
}
if (keyCode == KeyEvent.VK_DOWN) {
if (playerY < 550) playerY += playerSpeed;
}
}

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

Thread gameThread = new Thread(() -> {
while (true) {
for (int i = 0; i < enemyY.size(); i++) {
enemyY.set(i, enemyY.get(i) + enemySpeed.get(i));
if (enemyY.get(i) > 600) {
enemyX.set(i, (int) (Math.random() * 750));
enemyY.set(i, -100);
enemySpeed.set(i, (int) (Math.random() * 5) + 1);
}

if (Math.abs(playerX - enemyX.get(i)) < 50 && Math.abs(playerY - enemyY.get(i)) < 50) {
System.exit(0);
}
}

repaint();

try {
Thread.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
gameThread.start();
}

@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(background, 0, 0, this);
g.drawImage(playerImage, playerX, playerY, this);

for (int i = 0; i < enemyX.size(); i++) {
g.drawImage(enemyImage, enemyX.get(i), enemyY.get(i), this);
}

g.setColor(Color.white);
g.setFont(new Font("Arial", Font.BOLD, 20));
g.drawString("SCORE: " + enemyY.size(), 20, 580);
}

public static void main(String[] args) {
JFrame frame = new JFrame("Airplane Game");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new AirplaneGame());
frame.pack();
frame.setResizable(false);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}