Summary - Multiplayer

Reinforce multiplayer usage with a summary task.

Summary: Multiplayer Architecture

In this group, you learned the cornerstones of multiplayer game systems: cheat-resistant Authoritative Server architecture, cloud-driven PUN 2, Mirror with [SyncVar] and [Command], RPC calls, and Lobby/Matchmaking flows.

// Authoritative server, synchronized variables, and RPCs
[SyncVar] int score;
[ServerRpc] void SendInputServerRpc() {}
[ClientRpc] void UpdateClientRpc() {}

Combining these technologies enables you to build robust, scalable, and cheat-resilient networked games.

Exercise Complete multiplayer system

Define a Start method. Inside, print the text "Multiplayer sistemi eksiksiz calisiyor" using Debug.Log.

Show example solution

using UnityEngine;

public class MultiplayerSummary : MonoBehaviour
{
    void Start()
    {
        Debug.Log("Multiplayer sistemi eksiksiz calisiyor");
    }
}

Test yourself

What is the correct data flow between client and server in an authoritative server architecture?
- Clients send inputs; the server validates them and broadcasts the game state
- The server only renders graphics, while clients validate physics
- Clients mutate health points directly, the server merely watches
- Each client holds an isolated game state without cross-validating
Show answer

Clients send inputs; the server validates them and broadcasts the game state — In the Authoritative Server pattern, clients only generate inputs; the server evaluates physics and rules, then broadcasts the authoritative state.

Spawn network object on server

NetworkServer.____(playerInstance);

Show answer

NetworkServer.Spawn(playerInstance);

Multiplayer summary match

Authoritative Server

Central authority preventing cheats
SyncVar

Variable mirrored to clients on change
ClientRpc

Method triggered on all clients
Matchmaking

System allocating players into rooms

Next lesson: PlayerPrefs

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