3.7

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

namespace work
{
    class Program
    {

        static void Main(string[] args)
        {
            Random random = new Random();
            int currentWeapon = 0;
            int deletingWeapon;
            string[] weaponsName = new string[0];
            int[] weaponsDamage = new int[0];
            int[] weaponsSpeed = new int[0];

            Console.SetCursorPosition(45, 2);
            Console.WriteLine("Арсенал ");
            Console.SetCursorPosition(3, 4);
            Console.WriteLine("Экирировано: Ничего");
            Console.SetCursorPosition(3, 5);
            Console.WriteLine("Скорострельность: нет");
            Console.SetCursorPosition(3, 6);
            Console.WriteLine("Урон: нет");
            Console.SetCursorPosition(3, 8);
            Console.WriteLine("МЕНЮ ");
            Console.SetCursorPosition(3, 9);
            Console.WriteLine("1) Добавить оружие ");
            Console.SetCursorPosition(3, 10);
            Console.WriteLine("2) Удалить оружие ");
            Console.SetCursorPosition(3, 11);
            Console.WriteLine("3) Экипировать оружие ");
            Console.SetCursorPosition(75, 10);
            Console.Write("Инвентарь");

            do
            {
                for (int i = 0; i < weaponsName.Length; i++)
                {
                    Console.SetCursorPosition(85, 10 + 1 * i);
                    Console.Write(" " + (i + 1) + " " + weaponsName[i]);
                }

                Console.SetCursorPosition(0, 12);
                Console.WriteLine("                                                           ");
                Console.SetCursorPosition(0, 12);
                ConsoleKeyInfo userInput = Console.ReadKey();
                switch (userInput.Key)
                {
                    case ConsoleKey.D1:
                        if (weaponsName.Length > 8)
                        {
                            Console.SetCursorPosition(5, 14);
                            Console.WriteLine("Инвентарь заполнен                                             ");
                            break;
                        }
                        string[] tempWeaponName = new string[weaponsName.Length + 1];
                        for (int i = 0; i < weaponsName.Length; i++)
                        {
                            tempWeaponName[i] = weaponsName[i];
                        }
                        switch (random.Next(0, 3))
                        {
                            case 0:
                                tempWeaponName[weaponsName.Length] = "Плазмо";
                                break;
                            case 1:
                                tempWeaponName[weaponsName.Length] = "Луче";
                                break;
                            case 2:
                                tempWeaponName[weaponsName.Length] = "Мега";
                                break;
                        }
                        switch (random.Next(0, 3))
                        {
                            case 0:
                                tempWeaponName[weaponsName.Length] = tempWeaponName[weaponsName.Length] + "бластер          ";
                                break;
                            case 1:
                                tempWeaponName[weaponsName.Length] = tempWeaponName[weaponsName.Length] + "мёт          ";
                                break;
                            case 2:
                                tempWeaponName[weaponsName.Length] = tempWeaponName[weaponsName.Length] + "Тесак            ";
                                break;
                        }
                        weaponsName = tempWeaponName;

                        int[] tempWeaponsDamage = new int[weaponsDamage.Length + 1];
                        for (int i = 0; i < weaponsDamage.Length; i++)
                        {
                            tempWeaponsDamage[i] = weaponsDamage[i];
                        }
                        tempWeaponsDamage[weaponsDamage.Length] = random.Next(10, 99);
                        weaponsDamage = tempWeaponsDamage;

                        int[] tempWeaponsSpeed = new int[weaponsSpeed.Length + 1];
                        for (int i = 0; i < weaponsSpeed.Length; i++)
                        {
                            tempWeaponsSpeed[i] = weaponsSpeed[i];
                        }
                        tempWeaponsSpeed[weaponsSpeed.Length] = random.Next(10, 99);
                        weaponsSpeed = tempWeaponsSpeed;

                        Console.SetCursorPosition(5, 14);
                        Console.Write("Добавлен " + weaponsName[weaponsName.Length - 1]);
                        Console.SetCursorPosition(40, 14);
                        Console.Write("скорострельность " + weaponsSpeed[weaponsSpeed.Length - 1] + " ");
                        Console.SetCursorPosition(60, 14);
                        Console.Write(" урон " + weaponsDamage[weaponsDamage.Length - 1] + " ");
                        break;
                    case ConsoleKey.D2:
                        if (weaponsName.Length == 0)
                        {
                            Console.SetCursorPosition(5, 14);
                            Console.WriteLine("Инвентарь пуст                                                 ");
                            break;
                        }
                        Console.SetCursorPosition(0, 12);
                        Console.Write("выберите оружие из инвентаря ");
                        deletingWeapon = Convert.ToInt32(Console.ReadLine());

                        if (currentWeapon == deletingWeapon)
                        {
                            Console.SetCursorPosition(3, 4);
                            Console.WriteLine("Экирировано: Ничего                ");
                            Console.SetCursorPosition(3, 5);
                            Console.WriteLine("Скорострельность: нет");
                            Console.SetCursorPosition(3, 6);
                            Console.WriteLine("Урон: нет");
                            Console.SetCursorPosition(3, 8);
                        }
                        if (deletingWeapon > weaponsName.Length)
                        {
                            Console.SetCursorPosition(5, 14);
                            Console.WriteLine("Нет такого оружия                                                ");
                            break;
                        }

                        Console.SetCursorPosition(5, 14);
                        Console.Write("Удалён " + weaponsName[deletingWeapon - 1] + "                                          ");
                        string[] delWeaponName = new string[weaponsName.Length - 1];
                        int[] delWeaponsDamage = new int[weaponsDamage.Length - 1];
                        int[] delWeaponsSpeed = new int[weaponsSpeed.Length - 1];
                        for (int i = 0; i < deletingWeapon - 1; i++)
                        {
                            delWeaponName[i] = weaponsName[i];
                            delWeaponsDamage[i] = weaponsDamage[i];
                            delWeaponsSpeed[i] = weaponsSpeed[i];
                        }
                        for (int i = deletingWeapon - 1; i < delWeaponName.Length; i++)
                        {
                            delWeaponName[i] = weaponsName[i + 1];
                            delWeaponsDamage[i] = weaponsDamage[i + 1];
                            delWeaponsSpeed[i] = weaponsSpeed[i + 1];
                        }
                        weaponsName = delWeaponName;
                        weaponsDamage = delWeaponsDamage;
                        weaponsSpeed = delWeaponsSpeed;

                        Console.SetCursorPosition(85, 10 + 1 * weaponsName.Length);
                        Console.Write("                                        ");
                        break;
                    case ConsoleKey.D3:
                        Console.SetCursorPosition(0, 12);
                        Console.Write("выберите оружие из инвентаря ");
                        currentWeapon = Convert.ToInt32(Console.ReadLine());
                        if (currentWeapon > weaponsName.Length)
                        {
                            Console.SetCursorPosition(5, 14);
                            Console.WriteLine("Такого оружия нет                                                 ");
                            break;
                        }
                        Console.SetCursorPosition(3, 4);
                        Console.WriteLine("Экирировано: " + weaponsName[currentWeapon - 1]);
                        Console.SetCursorPosition(3, 5);
                        Console.WriteLine("Скорострельность: " + weaponsSpeed[currentWeapon - 1] + "  ");
                        Console.SetCursorPosition(3, 6);
                        Console.WriteLine("Урон: " + weaponsDamage[currentWeapon - 1] + "  ");
                        break;
                    default:
                        Console.SetCursorPosition(0, 20);
                        Console.WriteLine("ERROR");
                        break;
                }
            } while (true);
        }
    }
}