using System;

using System.Collections.Generic;

using UnityEngine;

using System.Linq;

public class Program

{

    public static System.Random random = new System.Random();

    public static HashSet<Vector3> lastNPos = new HashSet<Vector3>();

    public static Dictionary<string, HashSet<Vector3>> playerGenerate = new Dictionary<string, HashSet<Vector3>>();

    //000, 111

    public static void Main()

    {

        InitializeVectors("000");

        foreach(var k in lastNPos)

        {

            Console.WriteLine("Initial Vectors: " + k);

        }

        for(var i = 0; i < 10; i++)

        {

            Console.WriteLine(RandomizeVectors());

        }

    }

    public static Vector3 ReturnRandomVector()

    {

        return new Vector3(50 + random.Next(-4, 4), 50 + random.Next(-1, 4), 50);

    }

    public static void InitializeVectors(string initalId)

    {

        HashSet<Vector3> initialHash = new HashSet<Vector3>();

        while (initialHash.Count < 4)

        {

            initialHash.Add(ReturnRandomVector());

        }

        playerGenerate.Add(initialId, initialHash);

    }

    public static Vector3 RandomizeVectors()

    {

        HashSet<Vector3> lastNPosRandomize = new HashSet<Vector3>(lastNPos);

        List<Vector3> listPos = lastNPosRandomize.ToList();

        Vector3 useThisElement = listPos.First();

        listPos.RemoveAt(0);

        Vector3 addedValue = new Vector3();

        while (lastNPosRandomize.Count < 5)

        {

            var rndV3 = ReturnRandomVector();

            if (!lastNPosRandomize.Contains(rndV3))

            {

                addedValue = rndV3;

                break;

            }

        }

        listPos.Add(addedValue);

        lastNPos = new HashSet<Vector3>(listPos.ToHashSet());

        Console.WriteLine("\n");

        return useThisElement;

    }

}