using System;

namespace Brave_new_world
{
    class Program
    {
        static void Main()
        {
            Console.CursorVisible = false;
            bool isPlaying = true;
            int countElement = 0, playerDX = 0, playerDY = 1;
            char[,] map = GenerateMap();

            DrawMap(ref map, out int playerX, out int playerY);

            while (isPlaying)
            {
                Console.SetCursorPosition(0, 20);
                Console.WriteLine($"Собрано {countElement}");

                if (Console.KeyAvailable)
                {
                    ConsoleKeyInfo key = Console.ReadKey(true);
                    ChangeDirection(key, ref playerDX, ref playerDY);
                }

                if (map[playerX + playerDX, playerY + playerDY] != '#')
                {
                    Move(map, '@', ref playerX, ref playerY, playerDX, playerDY);
                    CollectMoney(map, playerX, playerY, ref countElement);
                }
                System.Threading.Thread.Sleep(300);
            }
        }

        static void CollectMoney(char[,] map, int playerX, int playerY, ref int countElement)
        {
            if (map[playerX, playerY] == '$')
            {
                countElement++;
                map[playerX, playerY] = ' ';
            }
        }

        static char[,] GenerateMap()
        {
            int money = 5, wall = 20, player = 1;
            char[,] map = new char[15, 15];

            for (int i = 0; i < map.GetLength(0); i++)
            {
                for (int j = 0; j < map.GetLength(1); j++)
                {
                    if (i == 0 || i == map.GetLength(0) - 1 || j == 0 || j == map.GetLength(1) - 1)
                    {
                        map[i, j] = '#';
                    }
                    else
                    {
                        map[i, j] = ' ';
                    }
                }
            }
            DrawElement(ref map, player, '@');
            DrawElement(ref map, money, '$');
            DrawElement(ref map, wall, '#');
            return map;
        }

        static void DrawMap(ref char[,] map, out int playerX, out int playerY)
        {
            playerX = 0;
            playerY = 0;

            for (int i = 0; i < map.GetLength(0); i++)
            {
                for (int j = 0; j < map.GetLength(1); j++)
                {
                    Console.Write(map[i, j]);
                    if (map[i, j] == '@')
                    {
                        playerX = i;
                        playerY = j;
                        map[i, j] = ' ';
                    }
                }
                Console.WriteLine();
            }
        }

        static void DrawElement(ref char[,] map, int element, char symbol)
        {
            Random random = new Random();
            int positionX, positionY;
            for (int i = 0; i <= element; i++)
            {
                while (element > 0)
                {
                    positionX = random.Next(1, map.GetLength(0) - 1);
                    positionY = random.Next(1, map.GetLength(1) - 1);

                    if (map[positionX, positionY] == ' ')
                    {
                        map[positionX, positionY] = symbol;
                        element--;
                    }
                }
            }
        }

        static void ChangeDirection(ConsoleKeyInfo key, ref int DX, ref int DY)
        {
            switch (key.Key)
            {
                case ConsoleKey.UpArrow:
                    DX = -1; DY = 0;
                    break;
                case ConsoleKey.DownArrow:
                    DX = 1; DY = 0;
                    break;
                case ConsoleKey.LeftArrow:
                    DX = 0; DY = -1;
                    break;
                case ConsoleKey.RightArrow:
                    DX = 0; DY = 1;
                    break;
            }
        }

        static void Move(char[,] map, char symbol, ref int x, ref int y, int DX, int DY)
        {
            Console.SetCursorPosition(y, x);
            Console.Write(map[x, y]); ;

            x += DX;
            y += DY;

            Console.SetCursorPosition(y, x);
            Console.Write(symbol);
        }
    }
}