using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Threading;

namespace lesson7
{
    class Program
    {
        public static Random r;
        static void Main(string[] args)
        {
            Console.CursorVisible = false;
            r = new Random();

            NPC npc = new NPC('%');
            npc.Move();

            NPC[] npcs = new NPC[9/*r.Next(0, 100)*/];

            for (int i = 0; i < npcs.Length; i++)
            {
                npcs[i] = new NPC((char)r.Next(97, 119), r.Next(0, 20), r.Next(0, 20), (ConsoleColor)r.Next(0, 15));
            }

            Cursor cursorYellow = new Cursor(npcs);
            Cursor cursorRed = new Cursor(npcs);

            while (true)
            {
                Console.Clear();
                foreach (NPC n in npcs)
                {
                    if (n.isLive())
                    {
                        n.Move();
                        Console.SetCursorPosition(n.X, n.Y);

                        Console.ForegroundColor = n.ForegroundColor;
                        if (cursorYellow.Current() == n && cursorRed.Current() == n)
                        {
                            Console.BackgroundColor = ConsoleColor.Yellow;
                        }
                        else if(cursorRed.Current() == n && cursorYellow.Current() == n)
                        {
                            Console.BackgroundColor = ConsoleColor.Yellow;
                        }
                        else if(cursorYellow.Current() == n)
                        {
                            Console.BackgroundColor = ConsoleColor.Yellow;
                        }
                        else if(cursorRed.Current() == n)
                        {
                            Console.BackgroundColor = ConsoleColor.Red;
                        }


                        Console.Write(n.Visual);

                        foreach (NPC n2 in npcs)
                        {
                            if (n2 != n && n2.isLive())
                            {
                                if (n2.X == n.X && n.Y == n2.Y)
                                {
                                    n2.Collision();
                                }
                            }
                        }

                    }
                    Console.ForegroundColor = ConsoleColor.White;
                    Console.BackgroundColor = ConsoleColor.Black;
                }
                ConsoleKeyInfo key = Console.ReadKey();
                if (key.Key == ConsoleKey.Tab)
                {
                    cursorYellow.MoveNext();
                }
                else if(key.Key == ConsoleKey.Enter)
                {
                    cursorRed.MoveNext();
                }
            }
        }


        public static int Clamp(int value, int min, int max)
        {
            return value < min ? min : (value > max) ? max : value;
        }
    }


    /*
     * 2 метода: isLive, Collision
     * 1 поле: колличество жизней
     * Метод Collision отнимает N жизней, и ставит текущим символов, колличество жизни
     */
    class NPC
    {
        public char Visual;
        public ConsoleColor ForegroundColor;
        public int X, Y;
        public int HP = 100, MaxHP = 100;

        public bool isLive()
        {
            return HP > 0;
        }

        public void Collision()
        {
            HP -= 10;
            HP = Program.Clamp(HP, 0, 100);
            Visual = (HP / (MaxHP / 9)).ToString()[0];
        }

        public NPC(char visual, int x = 5, int y = 5, ConsoleColor fc = ConsoleColor.White)
        {
            Visual = visual;
            X = x;
            Y = y;
            ForegroundColor = fc;
        }

        public void Move()
        {
            X = Program.Clamp(X + Program.r.Next(-1, 2), 0, Console.WindowWidth);
            Y = Program.Clamp(Y + Program.r.Next(-1, 2), 0, Console.WindowHeight);
        }

        /*public void Toggle()
        {
            ConsoleColor K = BackgroundColor;
            BackgroundColor = ForegroundColor;
            ForegroundColor = K;
        }*/
    }
}

/*
 * Инкапсуляция
 * Полиморфизм
 * Наследование
 */