MultiplayerTutorial.pdf

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Unity Multiplayer Tutorial

For using Networking in Unity.

Author: Andrius Kuznecovas

Last Revision: 24-MAR-2010

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Contents

1. Multiplayer Tutorial

1. Introduction

3

2. Getting Started

3

3. Creating Your First Client / Server Application

4

3.1 Preparing Scene

4

3.2 Creating Scripts & Adding Components

5

3.2.1 Server & Client

5

3.2.2 Scene & Objects Instantiation On The Network

8

3.3 Quick Overview

10

4. Implementing Multiplayer in Startrooper

11

4.1 Changing Scene

11

4.2 Integration

11

4.2.1 Integrating Objects & Scene

11

4.2.2 Server & Client

21

4.3.3 Final Polishing

37

4.3 Quick Overview

38

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Multiplayer Tutorial

Welcome, Unity User.

Here you will learn

advanced usage of Unity

Networking.

Have a great time and we

hope that this tutorial will

be helpful.

1. Introduction

The aim of this tutorial is to show the essence of Unity Networking. We will show

how to create basic and advanced network applications using Master Server/Client,

UDP Server/Client and Direct Connect. In this tutorial we will use Unity iPhone 1.6,

iPhone 3GS and the StarTrooper demo from the Unity web site.

2. Getting Started

There are a few things that you should know before you start.

• You will learn how to:

Use basic and advanced components of networking.

Create a server and client.

Use the Master Server.

Use Direct Connect.

Use UDP Broadcast Server.

Create a simple scene on the network.

Convert the StarTrooper game to multiplayer.

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Use other Unity components and more.

• You should have:

Unity iPhone 1.6.

iPhone or iPod.

Knowledge about networks and how they work.

Advanced C# and JavaScript skills.

Basic Unity skills. You can ﬁnd more information here .

• Important notes:

Unity supports .NET 1.1 and 2.1.

You can disable or enable Networking in: Edit -> Project Settings -> Player

-> Enable Unity Networking.

Unity Networking supports wiﬁ, 3G and GSM connections.

You can connect between diferent types of Unity targets. For example you

can connect from Unity on the desktop to Unity iPhone, from Unity Web

Player to Unity iPhone, etc.

3. Creating Your First Client / Server Application

In this chapter, we will cover the basics needed to create a simple multiplayer ap-

plication. We will create our ﬁrst example featuring moving objects on the network

and basic handshaking between the client and server. The example uses all basic

multiplayer components such as: Network and NetworkView . We will use Direct

Connect for connection between client and server.

3.1 Preparing Scene

• Now let’s start with a simple scene. Your ﬁrst steps:

Create a new Project.

Create a new Prefab and name it Player: Assets -> Create -> Prefab.

Create a new Cube GameObject: GameObject -> Create other -> Cube.

Drag your Cube from the Hierarchy to your Player Prefab in the Project and

then delete your Cube from the scene.

4

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Create a new Plane and name it Ground: GameObject -> Create other ->

Plane. Your Plane parameters should be: Position (0,0,0), Rotation (0,0,0),

Scale (5,5,5).

Create a Directional Light: GameObject -> Create other -> Directional Light.

Light parameters: Position (0,15,0), Rotation (25,0,0), Scale (1,1,1) Shadows

-> Type -> Soft Shadows.

Finally, save your scene and name it MainGame: File -> Save Scene.

Everything should look like this image:

3.2 Creating Scripts & Adding Components

• Next you will learn how to create the server and client, instantiate the scene and

objects on the network, move objects, and connect everything together.

3.2.1 Server & Client

• We will start with the most important — the creation of Server and Client:

Create a new JavaScript ﬁle and name it ConnectionGUI: Assets -> Create ->

JavaScript.

Add this ﬁle (by dragging) to the Main Camera object in the Hierarchy, then

open the ﬁle and create some variables:

var remoteIP = "127.0.0.1";

var remotePort = 25000;

var listenPort = 25000;

var useNAT = false;

var yourIP = "";

var yourPort = "";

5

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