using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 贪吃蛇
{
    class Game
    {
        //窗口宽高
        public const int h = 20;
        public const int w = 80;
        //当前游戏场景
        public static ISceneUpdate nowScene;

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

            ChangeScene(E_Scene.Begin);//初始场景为开始场景
        }
        public void Start()
        {
            //游戏主循环
            while (true)
            {
                try
                {
                    if (nowScene != null)
                    {
                        nowScene.Update();//场景不为空就更新场景
                    }
                }
                catch
                {

                }
            }
        }
        public static void ChangeScene(E_Scene type)
        {
            //切场景时先擦除上一次绘制的内容
            Console.Clear();
            switch (type)
            {
                case E_Scene.Begin:
                    nowScene = new BeginScene();
                    break;
                case E_Scene.Game:
                    nowScene = new GameScene();
                    break;
                case E_Scene.End:
                    nowScene = new EndScene();
                    break;
                default:
                    break;
            }
        }
    }
    enum E_Scene
    {
        /// <summary>
        /// 开始场景
        /// </summary>
        Begin,
        /// <summary>
        /// 游戏场景
        /// </summary>
        Game,
        /// <summary>
        /// 结束场景
        /// </summary>
        End,
    }//游戏场景枚举
}