using System;

​

public class GridSystem

{

    public class Vector2

    {

        public int x = 0;

        public int y = 0;

        public Vector2(int xCord, int yCord)

        {

            x = xCord;

            y = yCord;

        }

​

        public Vector2()

        {

        }

    }

​

    public static void Main()

    {

        int changer = 0;

        GridSystem gridSys = new GridSystem();

        string[, ] grid = new string[8, 10];

        Vector2 playerPos = new Vector2(0, 0);

        Vector2 applePos = new Vector2(0, 0);

        bool alive = true;

        while (alive)

        {

            Update(grid, playerPos, ref applePos, ref changer);

        }

    }

​

    public static void Move(string dir, ref Vector2 playerPos)

    {

        switch (dir.ToLower())

        {

            case "w":

                playerPos.y--;

                break;

            case "s":

                playerPos.y++;

                break;

            case "a":

                playerPos.x--;

                break;

            case "d":

                playerPos.x++;

                break;

        }

    }

​

    public static void Update(string[, ] grid, Vector2 playerPos, ref Vector2 applePos, ref int changer)

    {

        bool moveApple = true;

        FillGrid(ref grid, "⬜");

        if ((playerPos.x == applePos.x) && (playerPos.y == applePos.y))

        {

            moveApple = true;

        }

        else 

        {

            moveApple = false;

        }

        Console.WriteLine(applePos.x + ", " + applePos.y);

        if (moveApple)

        {

            PlaceApple(ref grid, applePos);

        }

        grid[applePos.x, applePos.y] = "A";

        grid[playerPos.y, playerPos.x] = "⬛";

        WriteGrid(grid);

        Move(Console.ReadLine(), ref playerPos);

    }

​

    public static Vector2 PlaceApple(ref string[, ] grid, Vector2 applePos)

    {

        Random rnd = new Random();

            return new Vector2(rnd.Next(0, grid.GetLength(0)), rnd.Next(0, grid.GetLength(1)));

        return applePos;

    }

​

    public static void FillGrid(ref string[, ] info, string ToFill)

    {

        for (int y = 0; y < info.GetLength(0); y++)

        {

            for (int x = 0; x < info.GetLength(1); x++)

            {

                info[y, x] = ToFill;

            }

        }

    }

​

    public static void WriteGrid(string[, ] info)

    {

        for (int y = 0; y < info.GetLength(0); y++)

        {

            for (int x = 0; x < info.GetLength(1); x++)

            {

                Console.Write(info[y, x]);

            }

​

            Console.Write("\n");

        }

    }

}