class Program
    {
        static int coins;
        //Spacing for text
        static void Spacer()
        {
            Console.WriteLine();
            Console.WriteLine();
            Console.WriteLine();
        }
        // The main function of the code
        static void Main(string[] args)
        {
            ColorScheme();
            Console.Write("Enter username: ");
            string username = Console.ReadLine();
            Console.Write("Enter password: ");
            string password = Console.ReadLine();
            Login(username, password);
            welcomePage();
            Console.ReadKey();
        }

        // Loads program and sets colour of background to yellow.
        public static void ColorScheme()
        {
            string loading = "Loading login details...";
            Console.SetCursorPosition((Console.WindowWidth - loading.Length) / 2, Console.CursorTop);
            Console.Write(loading);
            System.Threading.Thread.Sleep(3000);
            Console.Clear();
            Console.BackgroundColor = ConsoleColor.Cyan;
            Console.Clear();
            Console.ForegroundColor = ConsoleColor.Black;
        }
        // Login interface, 13 characters long (Username and password)
        public static void Login(string user, string pass)
        {
            string username, password;

            if (user == "Lewis" && pass == "Password")
            {
                Console.Write("Successfully logged in, redirecting you now..");
                System.Threading.Thread.Sleep(3000);
                Console.Clear();
            }
            if (user != "Lewis" || pass != "Password")
            {
                Console.Write("Incorrect details, try again");
                System.Threading.Thread.Sleep(3000);
                Console.Clear();
                Console.Write("Enter username: ");
                username = Convert.ToString(Console.ReadLine());
                Console.Write("Enter password: ");
                password = Convert.ToString(Console.ReadLine());
                Login(username, password);
            }
        }

        // Welcome page display
        public static void welcomePage()
        {
            string date = "14/12/2019";
            string name = "Lewis Dickinson";
            string narrative = "Zombie street, a platform shooter with the fun of obstacles.";
            Console.WriteLine();
            Console.SetCursorPosition((Console.WindowWidth - date.Length) / 2, Console.CursorTop);
            Console.WriteLine(date);
            Console.WriteLine();
            Console.SetCursorPosition((Console.WindowWidth - name.Length) / 2, Console.CursorTop);
            Console.WriteLine(name);
            Console.WriteLine();
            Console.SetCursorPosition((Console.WindowWidth - narrative.Length) / 2, Console.CursorTop);
            Console.WriteLine(narrative);
            System.Threading.Thread.Sleep(5000);
            Console.Clear();
            menu();
        }
        // Main Menu interface
        public static void menu()
        {
            int choice = 0;
            Console.WriteLine("Main Menu - Zombie Street");
            Console.WriteLine("==========================");
            Console.WriteLine("1. Zombie street game");
            Console.WriteLine("2. Help");
            Console.WriteLine("3. Exit");
            Console.WriteLine("==========================");
            Console.Write("Please enter 1, 2 or 3: ");
            choice = Convert.ToInt32(Console.ReadLine());
            switch (choice)
            {
                case 1:
                    Console.Clear();
                    string loading = "Loading level one..";
                    Console.SetCursorPosition((Console.WindowWidth - loading.Length) / 2, Console.CursorTop);
                    Console.WriteLine(loading);
                    System.Threading.Thread.Sleep(3000);
                    Console.Clear();
                    LevelOne();
                    break;
                case 2:
                    help();
                    break;
                case 3:
                    exit();
                    break;
                default:
                    Console.Write("Invalid option, try again");
                    System.Threading.Thread.Sleep(3000);
                    menu();
                    break;
            }

        }
        // Help page and description.
        public static void help()
        {
            int choice = 0;
            string title = "Help Interface", n = "Use key 'N' to move north", s = "Use key 'S' to move south", e = "Use key 'E' to move south", w = "Use key 'W' to move south";
            Console.Clear();
            Console.SetCursorPosition((Console.WindowWidth - title.Length) / 2, Console.CursorTop);
            Console.WriteLine(title);
            Console.WriteLine();
            Console.SetCursorPosition((Console.WindowWidth - n.Length) / 2, Console.CursorTop);
            Console.WriteLine(n);
            Console.SetCursorPosition((Console.WindowWidth - s.Length) / 2, Console.CursorTop);
            Console.WriteLine(s);
            Console.SetCursorPosition((Console.WindowWidth - e.Length) / 2, Console.CursorTop);
            Console.WriteLine(e);
            Console.SetCursorPosition((Console.WindowWidth - w.Length) / 2, Console.CursorTop);
            Console.WriteLine(w);
            Console.Write("Type 1 to return: ");
            choice = Convert.ToInt32(Console.ReadLine());
            switch (choice)
            {
                case 1:
                    Console.WriteLine("Returning to main menu..");
                    System.Threading.Thread.Sleep(3000);
                    Console.Clear();
                    menu();
                    break;
                default:
                    Console.WriteLine("Invalid option, try again..");
                    System.Threading.Thread.Sleep(3000);
                    help();
                    break;
            }
        }
        // Exit interface
        public static void exit()
        {
            string option = "Are you sure you want to quit?", optionTwo = "Yes / No", answer = "";

            Console.Clear();
            Console.SetCursorPosition((Console.WindowWidth - option.Length) / 2, Console.CursorTop);
            Console.WriteLine(option);
            Console.SetCursorPosition((Console.WindowWidth - optionTwo.Length) / 2, Console.CursorTop);
            Console.WriteLine(optionTwo);
            Spacer();
            Console.SetCursorPosition((Console.WindowWidth - answer.Length) / 2, Console.CursorTop);
            Console.Write(answer);
            answer = Convert.ToString(Console.ReadLine());
            switch (answer)
            {
                case "Yes":
                    Console.WriteLine("Closing application, thankyou for playing");
                    System.Threading.Thread.Sleep(3000);
                    Environment.Exit(0);
                    break;
                case "No":
                    Console.WriteLine("Returning to main menu");
                    System.Threading.Thread.Sleep(3000);
                    Console.Clear();
                    menu();
                    break;
                default:
                    Console.WriteLine("Invalid option, try again..");
                    System.Threading.Thread.Sleep(3000);
                    exit();
                    break;
            }
        }
        //start of level one
        static void LevelOne()
        {
            string Question = "You are lost, chose a direction you may believe to be the way home.", Answer = "Which direction would you like to go? ";
            Char Choice = 'A';
            Console.WriteLine();
            Console.SetCursorPosition((Console.WindowWidth - Question.Length) / 2, Console.CursorTop);
            Console.WriteLine(Question);
            Spacer();
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"{".",-25} {"West",-20} {"North",-20} {"East",-20} {"South",-20}");
            Spacer();
            Console.ForegroundColor = ConsoleColor.Black;
            Console.SetCursorPosition((Console.WindowWidth - Answer.Length) / 2, Console.CursorTop);
            Console.Write(Answer);
            Choice = Convert.ToChar(Console.ReadLine());
            Spacer();
            switch (Choice)
            {
                case 'W':
                    Console.WriteLine("You travel West..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    L1_W();
                    break;
                case 'N':
                    Console.WriteLine("You travel North..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    L1_N();
                    break;
                case 'S':
                    Console.WriteLine("You travel South..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    L1_S();
                    break;
                case 'E':
                    Console.WriteLine("You travel East..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    L1_E();
                    break;
                default:
                    Console.WriteLine("Invalid option, select option W/N/S/E");
                    System.Threading.Thread.Sleep(2500);
                    Console.Clear();
                    LevelOne();
                    break;
            }
        }
        //Direction north
        static void L1_N()
        {
            string score = "Coins: ";
            Console.WriteLine(score + coins);
            string Question = "You come across a locked gate, theres a pass code 237 and one digit missing.", QuestionTwo = "Theres a note that has a equation on it ”5x125”.";
            string Answer = "What is the last digit for the passcode?  ";
            int number = 0;
            Console.WriteLine();
            Console.SetCursorPosition((Console.WindowWidth - Question.Length) / 2, Console.CursorTop);
            Console.WriteLine(Question);
            Console.SetCursorPosition((Console.WindowWidth - QuestionTwo.Length) / 2, Console.CursorTop);
            Console.WriteLine(QuestionTwo);
            Spacer();
            Console.SetCursorPosition((Console.WindowWidth - Answer.Length) / 2, Console.CursorTop);
            Console.Write(Answer);
            number = Convert.ToInt32(Console.ReadLine());
            Spacer();
            switch (number)
            {
                case 625:
                    string right = "Correct, please choose a new direction";
                    Console.ForegroundColor = ConsoleColor.DarkGreen;
                    Console.SetCursorPosition((Console.WindowWidth - right.Length) / 2, Console.CursorTop);
                    Console.WriteLine(right);
                    System.Threading.Thread.Sleep(2500);
                    coins += 3;
                    Console.Clear();
                    L1_NDirect();
                    break;
                default:
                    Console.ForegroundColor = ConsoleColor.Red;
                    string wrong = "Wrong, please try again.";
                    Console.SetCursorPosition((Console.WindowWidth - wrong.Length) / 2, Console.CursorTop);
                    Console.WriteLine(wrong + "HINT: Try using a calculator");
                    System.Threading.Thread.Sleep(2500);
                    Console.Clear();
                    coins--;
                    Console.ForegroundColor = ConsoleColor.Black;
                    L1_N();
                    break;
            }
        }
        //Direction north, Correct
        static void L1_NDirect()
        {
            string score = "Coins: ";
            Console.WriteLine(score + coins);
            Char Choice = 'A';
            string Answer = "Which direction would you like to go ? ";
            Spacer();
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"{".",-35} {"West",-20} {"East",-20} {"North",-20}");
            Spacer();
            Console.ForegroundColor = ConsoleColor.Black;
            Console.SetCursorPosition((Console.WindowWidth - Answer.Length) / 2, Console.CursorTop);
            Console.Write(Answer);
            Choice = Convert.ToChar(Console.ReadLine());
            Spacer();
            switch (Choice)
            {
                case 'W':
                    Console.WriteLine("You travel West..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                case 'N':
                    Console.WriteLine("You travel North..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                case 'E':
                    Console.WriteLine("You travel East..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                default:
                    Console.WriteLine("Invalid option, select option W/N/E");
                    System.Threading.Thread.Sleep(2500);
                    L1_NDirect();
                    break;
            }
        }
        //Direction west
        static void L1_W()
        {
            string score = "Coins: ";
            Console.WriteLine(score + coins);
            string Question = "You come across a locked gate, theres a pass code 237 and one digit missing.", QuestionTwo = "Theres a note that has a equation on it ”5x125”.";
            string Answer = "What is the last digit for the passcode?  ";
            int number = 0;
            Console.WriteLine();
            Console.SetCursorPosition((Console.WindowWidth - Question.Length) / 2, Console.CursorTop);
            Console.WriteLine(Question);
            Console.SetCursorPosition((Console.WindowWidth - QuestionTwo.Length) / 2, Console.CursorTop);
            Console.WriteLine(QuestionTwo);
            Spacer();
            Console.SetCursorPosition((Console.WindowWidth - Answer.Length) / 2, Console.CursorTop);
            Console.Write(Answer);
            number = Convert.ToInt32(Console.ReadLine());
            Spacer();
            switch (number)
            {
                case 625:
                    string right = "Correct, please choose a new direction";
                    Console.ForegroundColor = ConsoleColor.DarkGreen;
                    Console.SetCursorPosition((Console.WindowWidth - right.Length) / 2, Console.CursorTop);
                    Console.WriteLine(right);
                    System.Threading.Thread.Sleep(2500);
                    Console.Clear();
                    coins += 3;
                    L1_WDirect();
                    break;
                default:
                    Console.ForegroundColor = ConsoleColor.Red;
                    string wrong = "Wrong, please try again.";
                    Console.SetCursorPosition((Console.WindowWidth - wrong.Length) / 2, Console.CursorTop);
                    Console.WriteLine(wrong + "HINT: Try using a calculator");
                    System.Threading.Thread.Sleep(2500);
                    Console.Clear();
                    coins--;
                    Console.ForegroundColor = ConsoleColor.Black;
                    L1_W();
                    break;
            }
        }
        //Direction west, correct
        static void L1_WDirect()
        {
            string score = "Coins: ";
            Console.WriteLine(score + coins);
            Char Choice = 'A';
            string Answer = "Which direction would you like to go ? ";
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"{".",-35} {"North",-20} {"East",-20} {"South",-20}");
            Spacer();
            Console.ForegroundColor = ConsoleColor.Black;
            Console.SetCursorPosition((Console.WindowWidth - Answer.Length) / 2, Console.CursorTop);
            Console.Write(Answer);
            Choice = Convert.ToChar(Console.ReadLine());
            Spacer();
            switch (Choice)
            {
                case 'N':
                    Console.WriteLine("You travel North..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                case 'S':
                    Console.WriteLine("You travel South..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                case 'W':
                    Console.WriteLine("You travel West..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                default:
                    Console.WriteLine("Invalid option, select option N/S/W");
                    System.Threading.Thread.Sleep(2500);
                    L1_WDirect();
                    break;
            }
        }

        //Direction south
        static void L1_S()
        {
            string score = "Coins: ";
            Console.WriteLine(score + coins);
            string Question = "You come across a locked gate, theres a pass code 237 and one digit missing.", QuestionTwo = "Theres a note that has a equation on it ”5x125”.";
            string Answer = "What is the last digit for the passcode?  ";
            int number = 0;
            Console.WriteLine();
            Console.SetCursorPosition((Console.WindowWidth - Question.Length) / 2, Console.CursorTop);
            Console.WriteLine(Question);
            Console.SetCursorPosition((Console.WindowWidth - QuestionTwo.Length) / 2, Console.CursorTop);
            Console.WriteLine(QuestionTwo);
            Spacer();
            Console.SetCursorPosition((Console.WindowWidth - Answer.Length) / 2, Console.CursorTop);
            Console.Write(Answer);
            number = Convert.ToInt32(Console.ReadLine());
            Spacer();
            switch (number)
            {
                case 625:
                    string right = "Correct, please choose a new direction";
                    Console.ForegroundColor = ConsoleColor.DarkGreen;
                    Console.SetCursorPosition((Console.WindowWidth - right.Length) / 2, Console.CursorTop);
                    Console.WriteLine(right);
                    System.Threading.Thread.Sleep(2500);
                    Console.Clear();
                    coins += 3;
                    L1_SDirect();
                    break;
                default:
                    Console.ForegroundColor = ConsoleColor.Red;
                    string wrong = "Wrong, please try again.";
                    Console.SetCursorPosition((Console.WindowWidth - wrong.Length) / 2, Console.CursorTop);
                    Console.WriteLine(wrong + "HINT: Try using a calculator");
                    System.Threading.Thread.Sleep(2500);
                    Console.Clear();
                    coins--;
                    Console.ForegroundColor = ConsoleColor.Black;
                    L1_S();
                    break;
            }
        }
        //Direction south, correct
        static void L1_SDirect()
        {
            string score = "Coins: ";
            Console.WriteLine(score + coins);
            Char Choice = 'A';
            string Answer = "Which direction would you like to go ? ";
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"{".",-35} {"West",-20} {"East",-20} {"North",-20}");
            Spacer();
            Console.ForegroundColor = ConsoleColor.Black;
            Console.SetCursorPosition((Console.WindowWidth - Answer.Length) / 2, Console.CursorTop);
            Console.Write(Answer);
            Choice = Convert.ToChar(Console.ReadLine());
            Spacer();
            switch (Choice)
            {
                case 'W':
                    Console.WriteLine("You travel West..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                case 'S':
                    Console.WriteLine("You travel South..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                case 'E':
                    Console.WriteLine("You travel East..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                default:
                    Console.WriteLine("Invalid option, select option W/S/E");
                    System.Threading.Thread.Sleep(2500);
                    L1_SDirect();
                    break;
            }
        }
        //Direction east
        static void L1_E()
        {
            string score = "Coins: ";
            Console.WriteLine(score + coins);
            string Question = "You come across a locked gate, theres a pass code 237 and one digit missing.", QuestionTwo = "Theres a note that has a equation on it ”5x125”.";
            string Answer = "What is the last digit for the passcode?  ";
            int number = 0;
            Console.WriteLine();
            Console.SetCursorPosition((Console.WindowWidth - Question.Length) / 2, Console.CursorTop);
            Console.WriteLine(Question);
            Console.SetCursorPosition((Console.WindowWidth - QuestionTwo.Length) / 2, Console.CursorTop);
            Console.WriteLine(QuestionTwo);
            Spacer();
            Console.SetCursorPosition((Console.WindowWidth - Answer.Length) / 2, Console.CursorTop);
            Console.Write(Answer);
            number = Convert.ToInt32(Console.ReadLine());
            Spacer();
            switch (number)
            {
                case 625:
                    string right = "Correct, please choose a new direction";
                    Console.ForegroundColor = ConsoleColor.DarkGreen;
                    Console.SetCursorPosition((Console.WindowWidth - right.Length) / 2, Console.CursorTop);
                    Console.WriteLine(right);
                    System.Threading.Thread.Sleep(2500);
                    Console.Clear();
                    coins += 3;
                    L1_EDirect();
                    break;
                default:
                    Console.ForegroundColor = ConsoleColor.Red;
                    string wrong = "Wrong, please try again.";
                    Console.SetCursorPosition((Console.WindowWidth - wrong.Length) / 2, Console.CursorTop);
                    Console.WriteLine(wrong + "HINT: Try using a calculator");
                    System.Threading.Thread.Sleep(2500);
                    Console.Clear();
                    coins--;
                    Console.ForegroundColor = ConsoleColor.Black;
                    L1_E();
                    break;
            }
        }
        //Direction East, correct
        static void L1_EDirect()
        {
            string score = "Coins: ";
            Console.WriteLine(score + coins);
            Char Choice = 'A';
            string Answer = "Which direction would you like to go ? ";
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"{".",-35} {"West",-20} {"East",-20} {"North",-20}");
            Spacer();
            Console.ForegroundColor = ConsoleColor.Black;
            Console.SetCursorPosition((Console.WindowWidth - Answer.Length) / 2, Console.CursorTop);
            Console.Write(Answer);
            Choice = Convert.ToChar(Console.ReadLine());
            Spacer();
            switch (Choice)
            {
                case 'E':
                    Console.WriteLine("You travel East..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                case 'N':
                    Console.WriteLine("You travel North..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                case 'S':
                    Console.WriteLine("You travel South..");
                    System.Threading.Thread.Sleep(1500);
                    Console.Clear();
                    break;
                default:
                    Console.WriteLine("Invalid option, select option E/N/S");
                    System.Threading.Thread.Sleep(2500);
                    L1_EDirect();
                    break;
            }
        }

    }
}