贪吃蛇+修改命令提示符

shell/Commands/Help/Help.cs

@@ -100,6 +100,12 @@ namespace CMLeonOS.Commands
                 Description = "Play maze escape game"
             },
             new CommandInfo
+            {
+                Command = "snake",
+                Parameters = "",
+                Description = "Play snake game"
+            },
+            new CommandInfo
             {
                 Command = "edit",
                 Parameters = "<file>",

shell/Commands/Utility/SnakeCommand.cs

@@ -0,0 +1,191 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+
+namespace CMLeonOS.Commands.Utility
+{
+    public static class SnakeCommand
+    {
+        private static readonly int width = 40;
+        private static readonly int height = 20;
+        private static readonly int snakeStartLength = 3;
+        private static List<(int x, int y)> snake;
+        private static (int x, int y) food;
+        private static (int dx, int dy) direction;
+        private static bool running;
+        private static Random random;
+        private static int score;
+        private static bool gameOver;
+
+        public static void PlaySnake()
+        {
+            Console.Clear();
+            
+            InitializeGame();
+            
+            while (running)
+            {
+                if (Console.KeyAvailable)
+                {
+                    var key = Console.ReadKey(true);
+                    HandleInput(key);
+                }
+                
+                Update();
+                Render();
+                
+                if (gameOver)
+                {
+                    ShowGameOver();
+                    break;
+                }
+                
+                Thread.Sleep(100);
+            }
+            
+            Console.Clear();
+            Console.ResetColor();
+        }
+
+        private static void InitializeGame()
+        {
+            snake = new List<(int, int y)>();
+            direction = (1, 0);
+            random = new Random();
+            score = 0;
+            gameOver = false;
+            running = true;
+            
+            int startX = width / 2;
+            int startY = height / 2;
+            
+            for (int i = 0; i < snakeStartLength; i++)
+            {
+                snake.Add((startX - i, startY));
+            }
+            
+            SpawnFood();
+        }
+
+        private static void HandleInput(ConsoleKeyInfo key)
+        {
+            switch (key.Key)
+            {
+                case ConsoleKey.UpArrow:
+                    if (direction.dy == 0)
+                        direction = (0, -1);
+                    break;
+                case ConsoleKey.DownArrow:
+                    if (direction.dy == 0)
+                        direction = (0, 1);
+                    break;
+                case ConsoleKey.LeftArrow:
+                    if (direction.dx == 0)
+                        direction = (-1, 0);
+                    break;
+                case ConsoleKey.RightArrow:
+                    if (direction.dx == 0)
+                        direction = (1, 0);
+                    break;
+                case ConsoleKey.Escape:
+                case ConsoleKey.Q:
+                    running = false;
+                    break;
+            }
+        }
+
+        private static void Update()
+        {
+            if (!running || gameOver)
+                return;
+            
+            int headX = snake[0].x + direction.dx;
+            int headY = snake[0].y + direction.dy;
+            
+            if (headX < 0 || headX >= width || headY < 0 || headY >= height)
+            {
+                gameOver = true;
+                return;
+            }
+            
+            for (int i = 1; i < snake.Count; i++)
+            {
+                if (headX == snake[i].x && headY == snake[i].y)
+                {
+                    gameOver = true;
+                    return;
+                }
+            }
+            
+            snake.Insert(0, (headX, headY));
+            
+            if (headX == food.x && headY == food.y)
+            {
+                score += 10;
+                SpawnFood();
+            }
+            else
+            {
+                snake.RemoveAt(snake.Count - 1);
+            }
+        }
+
+        private static void Render()
+        {
+            Console.SetCursorPosition(0, 0);
+            Console.ForegroundColor = ConsoleColor.DarkBlue;
+            Console.BackgroundColor = ConsoleColor.Black;
+            Console.Clear();
+            
+            Console.ForegroundColor = ConsoleColor.Green;
+            foreach (var segment in snake)
+            {
+                Console.SetCursorPosition(segment.x, segment.y);
+                Console.Write("#");
+            }
+            
+            Console.ForegroundColor = ConsoleColor.Red;
+            Console.SetCursorPosition(food.x, food.y);
+            Console.Write("O");
+            
+            Console.ForegroundColor = ConsoleColor.Yellow;
+            Console.SetCursorPosition(0, height);
+            Console.Write($"Score: {score} | Arrow keys to move | ESC or Q to quit");
+            
+            Console.ResetColor();
+        }
+
+        private static void SpawnFood()
+        {
+            bool validPosition = false;
+            while (!validPosition)
+            {
+                food.x = random.Next(0, width);
+                food.y = random.Next(0, height);
+                
+                validPosition = true;
+                foreach (var segment in snake)
+                {
+                    if (food.x == segment.x && food.y == segment.y)
+                    {
+                        validPosition = false;
+                        break;
+                    }
+                }
+            }
+        }
+
+        private static void ShowGameOver()
+        {
+            Console.Clear();
+            Console.ForegroundColor = ConsoleColor.Red;
+            Console.SetCursorPosition(width / 2 - 5, height / 2);
+            Console.WriteLine("GAME OVER!");
+            Console.SetCursorPosition(width / 2 - 8, height / 2 + 1);
+            Console.WriteLine($"Final Score: {score}");
+            Console.SetCursorPosition(width / 2 - 10, height / 2 + 3);
+            Console.WriteLine("Press any key to exit...");
+            Console.ReadKey(true);
+        }
+    }
+}