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

namespace pacman
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.CursorVisible = false;

            Random rnd = new Random();
            bool win = false;

            int maxPoint = 0;
            int point = 0;

            // Карта из файла
            string[] newFile = File.ReadAllLines("map.txt");
            char[,] map = new char[newFile.Length, newFile[1].Length];

            // PACMAM началные свойства
            int pacX = 0, pacY = 0;
            int DX = 0, DY = 0;
            bool die = false;

            // GHOST начальные свойства
            int ghostX = 0, ghostY = 0;
            int GDX = 1, GDY = 0;
            int ghostDir = 0;

            // Читаем из файла и заносим в память карту

            generateMap(ref map, ref newFile);

            // Выводим карту на экран

            renderMap(map, ref pacX, ref pacY, ref maxPoint, ref ghostX, ref ghostY);

            // УПРАВЛЕНИЕ

            mainLoop(ref win, ref die, ref DX, ref DY, ref GDX, ref GDY, map, ref pacX, ref pacY, ref ghostX, ref ghostY, ref ghostDir, ref point, ref maxPoint, ref rnd);

            if(win)
            {
                Console.Clear();
                Console.Write("Вы выиграли\n");
            }
            else
            {
                Console.Clear();
                Console.Write("Вы проиграли\n");
            }
        }

        static void generateMap(ref char[,] map, ref string[] newFile)
        {
            for (int i = 0; i < map.GetLength(0); i++)
                for (int j = 0; j < map.GetLength(1); j++)
                    map[i, j] = newFile[i][j];
        }
        static void renderMap(char[,] map, ref int pacX, ref int pacY, ref int maxPoint, ref int ghostX, ref int ghostY)
        {
            for (int i = 0; i < map.GetLength(0); i++)
            {
                for (int j = 0; j < map.GetLength(1); j++)
                {
                    if (map[i, j] == '@')
                    {
                        pacX = j;
                        pacY = i;
                        map[i, j] = ' ';
                    }
                    else if (map[i, j] == ' ')
                    {
                        map[i, j] = '.';
                        maxPoint++;
                    }
                    else if (map[i, j] == '0')
                    {
                        map[i, j] = ' ';
                    }
                    else if (map[i, j] == 'X')
                    {
                        map[i, j] = 'X';
                    }
                    else if (map[i, j] == '%')
                    {
                        ghostX = j;
                        ghostY = i;
                        map[i, j] = '.';
                    }
                    Console.Write(map[i, j]);
                }
                Console.WriteLine();
            }
        }
        static void movePacman(ref int DX, ref int DY)
        {
            ConsoleKeyInfo key;
            if (Console.KeyAvailable)
            {
                key = Console.ReadKey(true);
                switch (key.Key)
                {
                    case ConsoleKey.UpArrow:
                        DX = 0; DY = -1;
                        break;
                    case ConsoleKey.DownArrow:
                        DX = 0; DY = 1;
                        break;
                    case ConsoleKey.LeftArrow:
                        DX = -1; DY = 0;
                        break;
                    case ConsoleKey.RightArrow:
                        DX = 1; DY = 0;
                        break;
                }
            }
        }
        static void moveGhost(char[,] map, ref int ghostY, ref int ghostX, ref int GDX, ref int GDY, ref int ghostDir, int pacX, int pacY, ref bool die, ref Random rnd)
        {
            if (map[ghostY + GDY, ghostX + GDX] == '#')
            {
                ghostDir = rnd.Next(1, 5);

                switch (ghostDir)
                {
                    case 1:
                        GDX = 0; GDY = 1;
                        break;
                    case 2:
                        GDX = 0; GDY = -1;
                        break;
                    case 3:
                        GDX = -1; GDY = 0;
                        break;
                    case 4:
                        GDX = 1; GDY = 0;
                        break;
                }
            }
            else
            {
                Console.SetCursorPosition(ghostX, ghostY);
                Console.Write(map[ghostY, ghostX]);
                ghostX += GDX;
                ghostY += GDY;
                Console.SetCursorPosition(ghostX, ghostY);
                Console.Write('%');
                if (ghostX == pacX && ghostY == pacY)
                {
                    die = true;
                }
            }
        }
        static void pacmanCollision( char[,] map, ref int pacY, ref int pacX, ref int DX, ref int DY, ref int point, ref int maxPoint) {
            if (map[pacY + DY, pacX + DX] != '#')
            {
                Console.SetCursorPosition(pacX, pacY);
                Console.Write(' ');
                pacX += DX;
                pacY += DY;
                Console.SetCursorPosition(pacX, pacY);
                Console.Write('@');
                Console.SetCursorPosition(0, map.GetLength(0) + 1);
                Console.Write($"Координаты   {pacX}   /   {pacY}  ");


                if (map[pacY, pacX] == '.')
                {
                    point++;
                    map[pacY, pacX] = ' ';

                    Console.SetCursorPosition(0, map.GetLength(0) + 2);
                    Console.Write($"Вы собрали {point} / {maxPoint}");
                }
                else if (map[pacY, pacX] == 'X')
                {

                    if (pacX == 28 && pacY == 9)
                    {
                        Console.SetCursorPosition(28, 9);
                        Console.Write('X');
                        Console.SetCursorPosition(0, 9);
                        Console.Write('X');
                        pacX = 1;
                        pacY = 9;

                    }
                    else
                    {
                        Console.SetCursorPosition(0, 9);
                        Console.Write('X');
                        Console.SetCursorPosition(28, 9);
                        Console.Write('X');
                        pacX = 27;
                        pacY = 9;
                    }

                }
            }
        }
        static void mainLoop(ref bool win, ref bool die, ref int DX, ref int DY, ref int GDX, ref int GDY, char[,] map, ref int pacX, ref int pacY, ref int ghostX, ref int ghostY, ref int ghostDir, ref int point, ref int maxPoint, ref Random rnd)
        {

            while (!win && !die)
            {
                movePacman(ref DX, ref DY);

                System.Threading.Thread.Sleep(100);

                pacmanCollision(map, ref pacY, ref pacX, ref DX, ref DY, ref point, ref maxPoint);

                moveGhost(map, ref ghostY, ref ghostX, ref GDX, ref GDY, ref ghostDir, pacX, pacY, ref die, ref rnd);


                if (point == maxPoint)
                {
                    win = true;
                }
            }
        }
    }
}