Client

using System.Net;
using System.Net.Sockets;
using UnityEngine;
using ServerData;
using System;
using System.Threading;
using System.Collections.Generic;

public class MPplayer
{
    public string ID;

    public float x, y;
    public float gunRot;
    public int state;
    public GameObject character;

    public Vector2 lastPos;

    public MPplayer(string _ID, float _x, float _y)
    {
        ID = _ID;
        x = _x;
        y = _y;
        state = 0;
    }

    public void Update()
    {
        character.transform.position = new Vector2(x, y);
    }
}

public class Client : MonoBehaviour
{
    public Socket master;
    public string name;
    public string ID;
    public UIHandler uihandler;
    public IPAddress ip;
    public bool isInit;

    private Packet lastMsg;
    private Packet currMsg;

    public List<MPplayer> players;

    public float health, ammo;
    public CharacterController cc;
    public GameObject prefab;
    public Vector2 lastPos;

    private void Awake()
    {
        uihandler = GetComponent<UIHandler>();
        players = new List<MPplayer>();
        Application.runInBackground = true;
        DontDestroyOnLoad(this);
    }

    private void Update()
    {
        if (uihandler.state == 0)
        {
            name = uihandler.clientName;
        }
        else if (uihandler.state == 2)
        {
            ip = IPAddress.Parse(uihandler.ip);
            master = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            IPEndPoint ipEnd = new IPEndPoint(ip, 1337);

            try
            {
                Debug.Log("connecting");
                master.Connect(ipEnd);

                uihandler.state = 3;
            }
            catch (SocketException ex)
            {
                uihandler.state = 0;
                Debug.LogError("Error with connection:");
                Debug.Log(ex.ToString());
            }
        }
        else if(uihandler.state == 3)
        {
            if (!isInit)
            {
                Thread data_in = new Thread(Data_IN);
                data_in.Start();
                isInit = true;
            }

            if(lastMsg != currMsg)
            {
                DataManager(currMsg);
                lastMsg = currMsg;

            }
        }
        else if(uihandler.state == 4)
        {

            float speed = 5;

            float vSpeed = Input.GetAxis("Vertical") * Time.deltaTime * speed;
            float hSpeed = Input.GetAxis("Horizontal") * Time.deltaTime * speed;

            transform.Translate(hSpeed, vSpeed, 0);

            if(lastPos != new Vector2(transform.position.x, transform.position.y))
            {
                lastPos = new Vector2(transform.position.x, transform.position.y);
                Packet packet = new Packet(PacketType.PlayerPositionUpdate, ID, transform.position.x.ToString(), transform.position.y.ToString());
                master.Send(packet.toBytes());
            }
        }


    }

    private void Data_IN()
    {
        byte[] buffer;
        int readBytes;
        for (; ; )
        {
            try
            {
                buffer = new byte[master.SendBufferSize];
                readBytes = master.Receive(buffer);

                if (readBytes > 0)
                {
                    currMsg = new Packet(buffer);
                }
            }
            catch (SocketException ex)
            {

                //TODO: jump over gracefully!
                Console.WriteLine("The server has disconnected");
                throw;
            }
        }
    }

    private void DataManager(Packet p)
    {
        Debug.Log("::>" + p.packetType);
        switch (p.packetType)
        {
            case PacketType.PlayerRegistration:
                this.ID = p.gData[0];

                Packet packet = new Packet(PacketType.PlayerRegistration, this.ID);
                master.Send(packet.toBytes());
                uihandler.state++;
                break;

            case PacketType.PlayerJoined:
                Debug.Log("Ow O");
                string ID = p.gData[0];

                float x = float.Parse(p.gData[1]);
                float y = float.Parse(p.gData[2]);

                GameObject newPlayer = Instantiate(prefab);
                newPlayer.transform.position = new Vector2(x, y);

                MPplayer mpPlayer = new MPplayer(ID, x, y);
                mpPlayer.character = newPlayer;
                players.Add(mpPlayer);

                break;

            case PacketType.PlayerPositionUpdate:
                int Index = players.FindIndex(i => i.ID == p.senderID);

                float px = float.Parse(p.gData[0]);
                float py = float.Parse(p.gData[1]);

                players[Index].x = px;
                players[Index].y = py;

                players[Index].Update();
                break;
            case PacketType.PlayerStatUpdate:

                if(p.gData[0] == this.ID)
                {
                    health = float.Parse(p.gData[1]);
                    ammo = float.Parse(p.gData[2]);
                }

                break;
            case PacketType.PlayerVisualUpdate:
                int index = players.FindIndex(i => i.ID == p.gData[0]);
                players[index].gunRot = float.Parse(p.gData[1]);

                break;
            default:
                break;
        }
    }
}