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--- pjv:laboratoare:2025:a05 [2025/09/29 08:35]
alexandru.gradinaru
+++ pjv:laboratoare:2025:a05 [2025/12/10 12:46] (current)
alexandru.gradinaru [Cerinte]
@@ Line 1: / Line 1: @@
 ===== 5. Servere multiplayer dedicate =====
+<hidden>
+laborator bonus
+de explicat sumar:
+  * - ce e darkrift si unde se gasesc resurse
+ github [[https://github.com/DarkRiftNetworking/DarkRift ]]
+si plugin pt client [[https://assetstore.unity.com/packages/tools/network/darkrift-networking-2-95309]]
+[10.12.2025, 11:26:43] Alex Gradinaru: hmm, ma mai gasit aici un tutorial, care foloseste si playfab pentru lobby
+[10.12.2025, 11:26:43] Alex Gradinaru: https://dev.to/robodoig/unity-multiplayer-bottom-to-top-46cj
+[10.12.2025, 11:28:39] Alex Gradinaru: pare interesant, dar probabil pt iteratia urmatoare de lab 🙂
+[10.12.2025, 11:28:55] Alex Gradinaru: vad ca e si hosted on playfab
+[10.12.2025, 11:29:50] Alex Gradinaru: si inca un tutorial interesant, cu predictii pt FPS https://lukestampfli.github.io/EmbeddedFPSExample/guide/introduction.html
+[10.12.2025, 11:30:04] Andrei Lapusteanu: https://lukestampfli.github.io/EmbeddedFPSExample/guide/networking-discussion.html#networking-architectures
+[10.12.2025, 11:30:15] Andrei Lapusteanu: Haha de pe acelasi tutorial :)
+[10.12.2025, 11:31:42] Alex Gradinaru: nu mai e accesibila documentatia, dar au mai ramas niste links utile prin github
+https://github.com/DarkRiftNetworking/DarkRift/wiki/%23-Useful-Links
+[10.12.2025, 11:31:51] Alex Gradinaru: nu gasesc inca legat de chat
+[10.12.2025, 11:32:44] Alex Gradinaru: ah, e tot pe git
+https://github.com/DarkRiftNetworking/DarkRift.Documentation
+[10.12.2025, 11:34:07] Alex Gradinaru: mda, tot nu are ceva legat de chat, dar cred ca foloseam doar sistemul de message si broadcast simplu
+alte idei : https://chatgpt.com/share/6935b217-e87c-8004-9a38-d216be4d634c
+</hidden>
+==== Cerinte =====
+Realizarea unui joc multiplayer de tip social, prin folosirea/implementarea unui server multiplayer dedicat:
+  * Player avatar sincronizat la nivel de pozitie si animatii: minim 2 playeri/clienti
+  * Comunicare chat cu interfata grafica
+===== Documentatie video ======
+===== Documentatie text ======
+Pentru acest laborator vom folosi [[https://github.com/DarkRiftNetworking/DarkRift|DarkRift 2]], un server dedicat, modular, care implementeaza protocoale de comunicare ca TCP, UDP, dar si cu extensii pentru WebSocket sau RUDP.
+Pentru integrarea cu Unity, se poate folosi pachetul din Asset Store [[https://assetstore.unity.com/packages/tools/network/darkrift-networking-2-95309|DarkRift Networking 2]]
+==== Server dedicat =====
+Folosind un server dedicat trebuie gestionate mai multe elemente:
+  * conexiunile si lista curenta de clienti conectati
+  * datele stocate despre player
+  * mesajele de update
+DarkRift foloseste un sistem modular, astfel ca puteti programa mecanica serverului fie direct, fie bazat pe plugin-uri C#, pentru a nu recompila la fiecare modificare tot serverul.
+Exemplu minimal:
+<code>
+using DarkRift;
+using DarkRift.Server;
+ServerSpawnData spawnData = ServerSpawnData.CreateFromXml("Server.config");
+var server = new DarkRiftServer(spawnData);
+void Client_MessageReceived(object? sender, MessageReceivedEventArgs e)
+{
+    using Message message = e.GetMessage();
+    using DarkRiftReader reader = message.GetReader();
+    Console.WriteLine("Received a message from the client: " + reader.ReadString());
+}
+void ClientManager_ClientConnected(object? sender, ClientConnectedEventArgs e)
+{
+    e.Client.MessageReceived += Client_MessageReceived;
+    using DarkRiftWriter writer = DarkRiftWriter.Create();
+    writer.Write("World of Hel!");
+    using Message secretMessage = Message.Create(666, writer);
+    e.Client.SendMessage(secretMessage, SendMode.Reliable);
+}
+server.ClientManager.ClientConnected += ClientManager_ClientConnected;
+server.StartServer();
+Console.ReadKey(); // Wait until key press. Not necessary in Unity.
+</code>
+cu un sistem de configurare in XML
+<code>
+<?xml version="1.0" encoding="utf-8" ?>
+<!--
+  Configuring DarkRift server to listen at ports TCP 4296 and UDP 4297.
+-->
+<configuration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://www.darkriftnetworking.com/DarkRift2/Schemas/2.3.1/Server.config.xsd">
+  <server maxStrikes="5" />
+  <pluginSearch/>
+  <logging>
+    <logWriters>
+      <logWriter name="ConsoleWriter1" type="ConsoleWriter" levels="trace, info, warning, error, fatal">
+        <settings useFastAnsiColoring="false" />
+      </logWriter>
+    </logWriters>
+  </logging>
+  <plugins loadByDefault="false"/>
+  <data directory="Data/"/>
+  <listeners>
+    <listener name="DefaultNetworkListener" type="BichannelListener" address="0.0.0.0" port="4296">
+      <settings noDelay="true" udpPort="4297" />
+    </listener>
+  </listeners>
+</configuration>
+</code>
+==== Client =====
+Pentru realizarea clientului puteti folosi direct pachetul din Asset Store [[https://assetstore.unity.com/packages/tools/network/darkrift-networking-2-95309|DarkRift Networking 2]]
+Exemplu de conectare si trimitere de mesaj simplu:
+<code>
+using DarkRift;
+using DarkRift.Client;
+using System.Net;
+var client = new DarkRiftClient();
+void Client_MessageReceived(object? sender, MessageReceivedEventArgs e)
+{
+    using Message message = e.GetMessage();
+    using DarkRiftReader reader = message.GetReader();
+    Console.WriteLine("Received a message from the server: " + reader.ReadString());
+}
+client.MessageReceived += Client_MessageReceived;
+client.Connect(IPAddress.Loopback, tcpPort:4296, udpPort:4297, noDelay:true);
+Console.WriteLine("Connected!");
+using DarkRiftWriter writer = DarkRiftWriter.Create();
+writer.Write("Hello world!");
+using Message secretMessage = Message.Create(1337, writer);
+client.SendMessage(secretMessage, SendMode.Reliable);
+Console.ReadKey(); // Wait until key press. Not necessary in Unity.
+</code>
+Puteti folosi tag-uri pentru a delimita diverse tipuri de mesaje.
+De exemplu pentru actualizare de miscare puteti folosi tagul 1 si pentru chat puteti folosi tag-ul 10
+Exemplu de trimitere mesaj de chat
+<code>
+    //This will be called when the user presses enter in the input field
+    public void MessageEntered()
+    {
+        //Check we have a client to send from
+        if (client == null)
+        {
+            Debug.LogError("No client assigned to Chat component!");
+            return;
+        }
+        //First we need to build a DarkRiftWriter to put the data we want to send in, it'll default to Unicode
+        //encoding so we don't need to worry about that
+        using (DarkRiftWriter writer = DarkRiftWriter.Create())
+        {
+            //We can then write the input text into it
+            writer.Write(input.text);
+            //Next we construct a message, in this case we can just use a default tag because there is nothing fancy
+            //that needs to happen before we read the data.
+            using (Message message = Message.Create(10, writer))
+            {
+                //Finally we send the message to everyone connected!
+                client.SendMessage(message, SendMode.Reliable);
+            }
+        }
+    }
+</code>
+Pentru actualizare miscarii, trebuie sa tinem cont de ficare client in parte:
+  * trimtem actualizari de la input doar pentru clientul curent
+<code>
+void UpdateNetworkPosition() {
+        if (
+            Vector3.Distance(lastPosition, transform.position) > moveDistance ||
+            Vector3.Distance(lastRotation, transform.eulerAngles) > moveDistance
+            )
+        {
+            using (DarkRiftWriter writer = DarkRiftWriter.Create())
+            {
+                writer.Write(transform.position.x);
+                writer.Write(transform.position.y);
+                writer.Write(transform.position.z);
+                writer.Write(transform.eulerAngles.x);
+                writer.Write(transform.eulerAngles.y);
+                writer.Write(transform.eulerAngles.z);
+                using (Message message = Message.Create(1, writer))
+                    Client.SendMessage(message, SendMode.Unreliable);
+            }
+            lastPosition = transform.position;
+            lastRotation = transform.eulerAngles;
+        }
+    }
+</code>
+  * instantiem diferit playerii: unul controlabil din input local, pentru clientul curent, si ceilalti doar sincronizati la actualizarile din server
+<code>
+void SpawnPlayer(object sender, MessageReceivedEventArgs e)
+    {
+        using (Message message = e.GetMessage())
+        using (DarkRiftReader reader = message.GetReader())
+        {
+            if (message.Tag == 0)
+            {
+                while (reader.Position < reader.Length)
+                {
+                    ushort id = reader.ReadUInt16();
+                    Vector3 position = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
+                    Vector3 euler = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
+                    GameObject obj;
+                    if (id == client.ID)
+                    {
+                        // instantiate local user
+                        obj = Instantiate(localPrefab, position, Quaternion.identity) as GameObject;
+                    }
+                    else
+                    {
+                        // instantiate network user
+                        obj = Instantiate(networkPrefab, position, Quaternion.identity) as GameObject;
+                        //keep a list with all network players
+                        networkPlayerManager.Add(id, playObj);
+                    }
+                }
+            }
+        }
+    }
+</code>
+  * actualizam sincronizarile din server pentru toti playerii. Pentru asta in general avem nevoie sa tinem minte toata lista de clienti
+<code>
+Dictionary<ushort, NetworkPlayerObj> networkPlayers = new Dictionary<ushort, NetworkPlayerObj>();
+void MessageReceived(object sender, MessageReceivedEventArgs e)
+    {
+        using (Message message = e.GetMessage() as Message)
+        {
+            Debug.Log("network message ");
+            if (message.Tag == 1)
+            {
+                // Debug.Log("position message ");
+                using (DarkRiftReader reader = message.GetReader())
+                {
+                    ushort id = reader.ReadUInt16();
+                    Vector3 newPosition = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
+                    Vector3 newEulerAngles = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
+                    if (networkPlayers.ContainsKey(id))
+                    {
+                        // Debug.Log("new network position: "+newPosition);
+                        networkPlayers[id].movePosition = newPosition;
+                        networkPlayers[id].currentEulerAngles = newEulerAngles;
+                    }
+                }
+            }
+        }
+    }
+</code>
+==== Server Plugin =====
+Putem folosi si un plugin modificand in configurare in felul urmator:
+<code>
+  <!--
+    Specifies where DarkRift should look for plugins.
+  -->
+  <pluginSearch>
+    <pluginSearchPath src="Plugins/" createDir="true" />
+    <pluginSearchPath src="LogWriters/" />
+    <pluginSearchPath src="NetworkListeners/" />
+  </pluginSearch>
+   <plugins loadByDefault="true">
+    <!-- Example:
+    <plugin type="Sniffer" load="false" />
+    -->
+  </plugins>
+</code>
+In acest caz veti face un proiect separat pentru plugin si il veti compila intr-un dll, care va fi pus/actualizat in folderul de Plugins.
+<code>
+using DarkRift;
+using DarkRift.Server;
+using System;
+using System.Collections.Generic;
+public class NetPlugin : Plugin
+{
+    Dictionary<IClient, Player> players = new Dictionary<IClient, Player>();
+    public override bool ThreadSafe => false;
+    public override Version Version => new Version(1, 2, 5);
+    public NetPlugin(PluginLoadData pluginLoadData) : base(pluginLoadData)
+    {
+        ClientManager.ClientConnected += ClientConnected;
+        ClientManager.ClientDisconnected += ClientDisconnected;
+    }
+}
+</code>
+unde clasa Player reprezinta datele stocate despre player. Spre exemplu se pot stoca date legate de pozitie, rotatie sau id de utilizator.
+<code>
+public struct Player
+{
+    public ushort ID;
+    public float X, Y, Z;
+    public float rotX, rotY, rotZ;
+}
+</code>
+In momentul in care se conecteaza un client, trebuie realizate urmatoarele lucruri:
+  * instantierea Player-ului in server
+  * notificarea tuturor celorlalti clienti conectati de conectarea unui nou player
+  * trimiterea de informatii despre ceilalti clienti, clientului nou conectat
+  * ascultarea de mesaje de actualizare
+<code c#>
+void ClientConnected(object sender, ClientConnectedEventArgs e)
+    {
+        //new player instance
+        Player newPlayer = new Player();
+        newPlayer.ID = e.Client.ID;
+        newPlayer.X = 0;
+        newPlayer.Y = 3;
+        newPlayer.Z = 0;
+        newPlayer.rotZ = 0;
+        newPlayer.rotY = 0;
+        newPlayer.rotZ = 0;
+        using (DarkRiftWriter newPlayerWriter = DarkRiftWriter.Create())
+        {
+            newPlayerWriter.Write(newPlayer.ID);
+            newPlayerWriter.Write(newPlayer.X);
+            newPlayerWriter.Write(newPlayer.Y);
+            newPlayerWriter.Write(newPlayer.Z);
+            newPlayerWriter.Write(newPlayer.rotX);
+            newPlayerWriter.Write(newPlayer.rotY);
+            newPlayerWriter.Write(newPlayer.rotZ);
+            //notify other clients
+            using (Message newPlayerMessage = Message.Create(0, newPlayerWriter))
+            {
+                foreach (IClient client in ClientManager.GetAllClients().Where(x => x != e.Client))
+                    client.SendMessage(newPlayerMessage, SendMode.Reliable);
+            }
+        }
+        players.Add(e.Client, newPlayer);
+        using (DarkRiftWriter playerWriter = DarkRiftWriter.Create())
+        {
+            foreach (Player player in players.Values)
+            {
+                playerWriter.Write(player.ID);
+                playerWriter.Write(player.X);
+                playerWriter.Write(player.Y);
+                playerWriter.Write(player.Z);
+                playerWriter.Write(player.rotX);
+                playerWriter.Write(player.rotY);
+                playerWriter.Write(player.rotZ);
+            }
+            //send all other players data to new client
+            using (Message playerMessage = Message.Create(0, playerWriter))
+                e.Client.SendMessage(playerMessage, SendMode.Reliable);
+        }
+        e.Client.MessageReceived += MovementMessageReceived;
+    }
+</code>
+==== Actualizare de informatii =====
+La fiecare actualizare (de ex miscarea personajului) trebuie facut broadcast.
+<code>
+void MovementMessageReceived(object sender, MessageReceivedEventArgs e)
+    {
+        using (Message message = e.GetMessage() as Message)
+        {
+            if (message.Tag == 1)
+            {
+                using (DarkRiftReader reader = message.GetReader())
+                {
+                    float newX = reader.ReadSingle();
+                    float newY = reader.ReadSingle();
+                    float newZ = reader.ReadSingle();
+                    float newRotX = reader.ReadSingle();
+                    float newRotY = reader.ReadSingle();
+                    float newRotZ = reader.ReadSingle();
+                    Player player = players[e.Client];
+                    player.ID = players[e.Client].ID; //AA
+                    player.X = newX;
+                    player.Y = newY;
+                    player.Z = newZ;
+                    player.rotX = newRotX;
+                    player.rotY = newRotY;
+                    player.rotZ = newRotZ;
+                    players[e.Client] = player; //AA
+                    using (DarkRiftWriter writer = DarkRiftWriter.Create())
+                    {
+                        writer.Write(player.ID);
+                        writer.Write(player.X);
+                        writer.Write(player.Y);
+                        writer.Write(player.Z);
+                        writer.Write(player.rotX);
+                        writer.Write(player.rotY);
+                        writer.Write(player.rotZ);
+                        message.Serialize(writer);
+                    }
+                    foreach (IClient c in ClientManager.GetAllClients().Where(x => x != e.Client))
+                        c.SendMessage(message, e.SendMode);
+                }
+            }
+        }
+    }
+   </code>
+Pentru sincronizarea de animatii se poate proceda in mai multe feluri, in functie si de modul de gestiune al animatiilor:
+     * fie se trimite si un indicator de stare al animatiei si se sincornizeaza over network
+     * fie se folosesc valori de speed, hieght etc (calculate prin diferenta sau luate/transmise direct)
+==== Chat =====
+Pentru a gestiona si mesajele chat, puteti adauga un event suplimentar in momentul in care se conecteaza clientul
+<code>
+e.Client.MessageReceived += ChatMessageReceived;
+</code>
+apoi sa ascultati mesajele si se face broadcast
+<code>
+    void ChatMessageReceived(object sender, MessageReceivedEventArgs e)
+    {
+        using (Message message = e.GetMessage() as Message)
+        {
+            if (message.Tag == 10)
+            {
+                using (DarkRiftReader reader = message.GetReader())
+                {
+                    using (DarkRiftWriter writer = DarkRiftWriter.Create())
+                    {
+                        writer.Write(reader.ReadString());
+                    }
+                    foreach (IClient c in ClientManager.GetAllClients())
+                        c.SendMessage(message, e.SendMode);
+                }
+            }
+        }
+    }
+</code>
+==== Deconectarea =====
+<code>
+void ClientDisconnected(object sender, ClientDisconnectedEventArgs e)
+    {
+        players.Remove(e.Client);
+        using (DarkRiftWriter writer = DarkRiftWriter.Create())
+        {
+            writer.Write(e.Client.ID);
+            using (Message message = Message.Create(2, writer))
+            {
+                foreach (IClient client in ClientManager.GetAllClients())
+                    client.SendMessage(message, SendMode.Reliable);
+            }
+        }
+    }
+ </code>

pjv/laboratoare/2025/a05.1759124142.txt.gz · Last modified: 2025/09/29 08:35 by alexandru.gradinaru

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