C#贪吃蛇

Program.cs

using 贪吃蛇.Text1;

Game game = new Game();
game.start();

Text1

Game.cs

using 贪吃蛇.Text2;

namespace 贪吃蛇.Text1
{
   
    enum E_SceneType
    {
   
        Begin,
        Game,
        End,
    }
    internal class Game
    {
   
        public const int w = 80;
        public const int h = 20;

        public static ISceneUpdate nowScene;

        public Game()
        {
   
            Console.CursorVisible = false;
            Console.SetWindowSize(w, h);
            Console.SetBufferSize(w, h);

            ChangeScene(E_SceneType.Begin);
        }

        public void start()
        {
   
            while (true)
            {
   
                if (nowScene != null)
                {
   
                    nowScene.Update();
                }
            }
        }

        public static  void ChangeScene(E_SceneType type)
        {
   
            Console.Clear();
            switch (type)
            {
   
                case E_SceneType.Begin:
                    nowScene = new BeginScene();
                    break;
                case E_SceneType.Game:
                    nowScene = new GameScene();
                    break;
                case E_SceneType.End:
                    nowScene = new EndScene();
                    break;
            }
        }
    }
}

ISceneUpdate.cs

namespace 贪吃蛇.Text1
{
   
    /// <summary>
    /// 场景更新接口
    /// </summary>
    internal interface ISceneUpdate
    {
   
        void Update();
    }
}

Text2

BeginScene.cs

using 贪吃蛇.Text1;

namespace 贪吃蛇.Text2
{
   
    internal class BeginScene : BegionOrEndScene
    {
   
        public BeginScene()
        {
   
            strTitle = "贪吃蛇";
            strOne = "开始游戏";
        }
        public override void EnterJDoSomthing()
        {
   
            if (nowSelIndex == 0)
            {
   
                Game.ChangeScene(E_SceneType.Game);
            }
            else
            {
   
                Environment.Exit(0);
            }
        }
    }
}

BegionOrEndScene.cs

using 贪吃蛇.Text1;

namespace 贪吃蛇.Text2
{
   
    abstract internal class BegionOrEndScene : ISceneUpdate
    {
   
        protected int nowSelIndex = 0;
        protected string strTitle;
        protected string strOne;

        public abstract void EnterJDoSomthing();
        public void Update()
        {
   
            Console.ForegroundColor = ConsoleColor.White;
            Console.SetCursorPosition(Game.w / 2 - strTitle.Length, 5);
            Console.Write(strTitle);

            Console.SetCursorPosition(Game.