task21

using System;
using System.Drawing;
using System.IO;
using System.Threading;

public class Program
{
    public static void Main()
    {
        ConsoleKey[] consoleKeys = {ConsoleKey.UpArrow, ConsoleKey.LeftArrow,
                                    ConsoleKey.RightArrow, ConsoleKey.DownArrow};
        Random random = new Random();
        char[,] gameMap = null;

        int playerX = 1;
        int playerY = 1;
        int allDots = 0;
        int collectDots = 0;

        int enemyX = 5;
        int enemyY = 1;
        int direction = 0;

        bool isRun = true;

        Console.CursorVisible = false;
        ReadFile(ref gameMap, "map", playerX, playerY, ref allDots);
        DrawMap(gameMap);

        int scoreX = gameMap.GetLength(1) + 4;
        int scoreY = 4;

        DrawScore(scoreX, scoreY, allDots, collectDots);

        while (isRun)
        {
            DrawPlayer(ref playerX, ref playerY, gameMap, ref collectDots);
            DrawEnemy(ref enemyX, ref enemyY, ref direction, gameMap, consoleKeys, random);
            DrawScore(scoreX, scoreY, allDots, collectDots);

            if (collectDots == allDots || (playerX == enemyX && playerY == enemyY))
            {
                Console.Clear();
                isRun = false;
            }
        }
    }

    public static void ReadFile(ref char[,] map, string fileName, int playerX, int playerY, ref int allDots)
    {
        string[] fileArray = File.ReadAllLines($"../../../{fileName}.txt");
        map = new char[fileArray.Length, fileArray[0].Length];

        for (int i = 0; i < fileArray.Length; ++i)
        {
            for (int j = 0; j < fileArray[0].Length; ++j)
            {
                if (fileArray[i][j] == ' ')
                {
                    map[i, j] = '*';
                    ++allDots;
                }
                else
                {
                    map[i, j] = '#';
                }
            }
        }

        --allDots;
        map[playerY, playerX] = '@';
    }

    public static void DrawMap(char[,] map)
    {
        for (int i = 0; i < map.GetLength(0); ++i)
        {
            for (int j = 0; j < map.GetLength(1); ++j)
                Console.Write(map[i, j]);
            Console.WriteLine();
        }
        Console.WriteLine();
    }

    public static void DrawScore(int x, int y, int allDots, int collectDots)
    {
        Console.SetCursorPosition(x, y);
        Console.WriteLine($"All Dots : {allDots}");
        Console.SetCursorPosition(x, y + 1);
        Console.WriteLine($"Collect Dots : {collectDots}");
    }

    public static void DrawEnemy(ref int positionX, ref int positionY, ref int direction,
                                 char[,] map, ConsoleKey[] keys, Random random)
    {
        int directionX = 0;
        int directionY = 0;

        ChangePosition(keys[direction], ref directionX, ref directionY);

        if (map[positionY + directionY, positionX + directionX] != '#')
        {
            Console.SetCursorPosition(positionX, positionY);
            Console.Write(map[positionY, positionX]);

            positionX += directionX;
            positionY += directionY;

            Console.SetCursorPosition(positionX, positionY);
            Console.Write('$');
        }
        else
        {
            direction = random.Next(0, keys.Length);
        }

        Thread.Sleep(50);
    }

    public static void DrawPlayer(ref int positionX, ref int positionY, char[,] map, ref int collectDots)
    {
        if (Console.KeyAvailable)
        {
            int directionX = 0;
            int directionY = 0;

            ConsoleKey key = Console.ReadKey(true).Key;

            ChangePosition(key, ref directionX, ref directionY);

            if (map[positionY + directionY, positionX + directionX] != '#')
            {
                Console.SetCursorPosition(positionX, positionY);
                map[positionY, positionX] = ' ';
                Console.Write(" ");

                positionX += directionX;
                positionY += directionY;

                if (map[positionY, positionX] == '*')
                {
                    ++collectDots;
                    map[positionY, positionX] = ' ';
                }

                Console.SetCursorPosition(positionX, positionY);
                map[positionY, positionX] = '@';
                Console.Write('@');
            }
        }
    }

    public static void ChangePosition(ConsoleKey key, ref int directionX, ref int directionY)
    {
        switch (key)
        {
            case ConsoleKey.UpArrow:
            case ConsoleKey.W:
                directionX = 0;
                directionY = -1;
                break;
            case ConsoleKey.RightArrow:
            case ConsoleKey.D:
                directionX = 1;
                directionY = 0;
                break;
            case ConsoleKey.LeftArrow:
            case ConsoleKey.A:
                directionX = -1;
                directionY = 0;
                break;
            case ConsoleKey.DownArrow:
            case ConsoleKey.S:
                directionX = 0;
                directionY = 1;
                break;
        }
    }
}