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

namespace 贪吃蛇
{
    abstract class BaseScene : ISceneUpdate
    {
        protected int nowSceneIndex = 0;
        protected string title;
        protected string str1;

        public abstract void PressEnter();
        public void Update()
        {
            //要完成的内容：绘制开始和结束场景，并完成切换选择功能
            Console.ForegroundColor = ConsoleColor.White;

            //绘制标题
            Console.SetCursorPosition(Game.w / 2 - title.Length, 5);
            Console.Write(title);

            //绘制选项
            Console.SetCursorPosition(Game.w / 2 - str1.Length, 8);
            Console.ForegroundColor = nowSceneIndex == 0 ? ConsoleColor.Red : ConsoleColor.White;
            Console.Write(str1);

            Console.SetCursorPosition(Game.w / 2 - 4, 10);
            Console.ForegroundColor = nowSceneIndex == 1 ? ConsoleColor.Red : ConsoleColor.White;
            Console.Write("结束游戏");
            //根据nowSceneIndex绘制wsj选中的索引
            switch (Console.ReadKey(true).Key)
            {
                case ConsoleKey.W:
                    nowSceneIndex = 0;
                    break;
                case ConsoleKey.S:
                    nowSceneIndex = 1;
                    break;
                case ConsoleKey.Enter:
                    PressEnter();
                    break;
            }
        }
    }
}