用c#写一个飞机大战的游戏

好的，以下是一个简单的飞机大战游戏的 C# 代码示例：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using System.Windows.Forms;

namespace PlaneGame
{
    class Program : Form
    {
        private int planeX = 100;
        private int planeY = 300;
        private int enemyX = 700;
        private int enemyY = 150;
        private int score = 0;

        private Timer timer;
        private Random random;
        private Font font;
        private Pen pen;
        private Brush brush;
        private Image planeImage;
        private Image enemyImage;
        private Image backgroundImage;

        public Program()
        {
            Text = "Plane Game";
            Width = 800;
            Height = 600;

            timer = new Timer();
            timer.Interval = 20;
            timer.Tick += Timer_Tick;
            timer.Start();

            random = new Random();

            font = new Font("Arial", 16);
            pen = new Pen(Color.Red);
            brush = new SolidBrush(Color.White);

            planeImage = Image.FromFile(@"plane.png");
            enemyImage = Image.FromFile(@"enemy.png");
            backgroundImage = Image.FromFile(@"background.png");

            DoubleBuffered = true;
        }

        private void Timer_Tick(object sender, EventArgs e)
        {
            // move enemy
            enemyX -= 5;
            if (enemyX < -100) // enemy is off screen
            {
                enemyX = 800;
                enemyY = random.Next(100, 400);
                score++; // increment score
            }

            // check collision
            Rectangle planeRect = new Rectangle(planeX, planeY, 100, 50);
            Rectangle enemyRect = new Rectangle(enemyX, enemyY, 100, 50);
            if (planeRect.IntersectsWith(enemyRect))
            {
                timer.Stop(); // game over
                MessageBox.Show("Game Over! Score: " + score.ToString());
                Close();
            }

            // redraw
            Invalidate();
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            // draw background
            e.Graphics.DrawImage(backgroundImage, 0, 0);

            // draw plane
            e.Graphics.DrawImage(planeImage, planeX, planeY);

            // draw enemy
            e.Graphics.DrawImage(enemyImage, enemyX, enemyY);

            // draw score
            e.Graphics.DrawString("Score: " + score.ToString(), font, brush, 10, 10);
        }

        protected override void OnKeyDown(KeyEventArgs e)
        {
            base.OnKeyDown(e);

            // move plane
            if (e.KeyCode == Keys.Up && planeY > 0)
            {
                planeY -= 10;
            }
            else if (e.KeyCode == Keys.Down && planeY < 550)
            {
                planeY += 10;
            }
            else if (e.KeyCode == Keys.Space) // shoot
            {
                // TODO: implement shooting
            }
        }

        static void Main(string[] args)
        {
            Application.Run(new Program());
        }
    }
}

在此示例中，我们使用了 Windows 窗体和 GDI+ 绘图功能来实现游戏的界面和动画。在游戏中，玩家控制飞机移动，并尝试躲避敌机，同时可以按下空格键进行射击。游戏会根据时间和碰撞检测来更新游戏状态，并随时重绘界面。当玩家撞上敌机时，游戏结束并弹出得分对话框。

请注意，此示例只是一个简单的演示，还有许多改进和扩展可以进行。例如，您可以添加更多的敌机、障碍物和武器，改进碰撞检测算法，增加音效和动画效果等等。祝您好运！