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2013 年12月

成都信息工程学院计算机学院

Unity指南

Unity团队

Unity Manual

Unity Team

Welcome to Unity.

Unity is made to empower you to create the best interactive entertainment or multimedia experience that you can. This manual is designed to help you learn how to use Unity, from basic to advanced techniques. It can be read from start to finish or used as a reference.

The manual is divided into different sections. The first section, User Guide, is an introduction to Unity's interface, asset workflow, and the basics of building a game. If you are new to Unity, you should start by reading the Unity Basics subsection.

The next section, FAQ, is a collection of frequently asked questions about performing common tasks that require a few steps.

The last section, Advanced, addresses topics such as game optimization, shaders, file sizes, and deployment.

When you've finished reading, take a look at the Reference Manual and the Scripting Reference for further details about the different possibilities of constructing your games with Unity.

If you find that any question you have is not answered in this manual please ask on Unity Answers or Unity Forums. You will be able to find your answer there.

The Unity Manual Guide contains some sections that apply only to certain platforms. Please select which platforms you want to see. Platform-specific information can always be seen by clicking on the disclosure triangles on each page.

GameObjects

GameObjects are the most important objects in Unity. It is very important to understand what a GameObject is, and how it can be used. This page will explain all that for you.

What are GameObjects?

Every object in your game is a GameObject. However, GameObjects don't do anything on their own. They need special properties before they can become a character, an environment, or a special effect.

But every one of these objects does so many different things. If every object is a GameObject, how do we differentiate an interactive power-up object from a static room? What makes these GameObjects different from each other?

The answer to this question is that GameObjects are containers. They are empty boxes which can hold the different pieces that make up a lightmapped island or a physics-driven car. So to really understand GameObjects, you have to understand these pieces; they are called Components. Depending on what kind of object you want to create, you will add different combinations of Components to the GameObject. Think of a GameObject as an empty cooking pot, and Components as different ingredients that make up your recipe of gameplay. You can also make your own Components using Scripts.

You can read more about GameObjects, Components, and Script Components on the pages in this section:

∙The GameObject-Component Relationship

∙Using Components

∙The Component-Script Relationship

∙Deactivating GameObjects

The GameObject-Component Relationship

As described previously in GameObjects, a GameObject contains Components. We'll explore this relationship by discussing a GameObject and its most common Component -- the Transform Component. With any Unity Scene open, create a new GameObject (using Shift-Control-N on Windows or Shift-Command-N on Mac), select it and take a look at the Inspector.

The Inspector of an Empty GameObject

Notice that an empty GameObject still contains a Name, a Tag, and a Layer. Every GameObject also contains a Transform Component.

The Transform Component

It is impossible to create a GameObject in Unity without a Transform Component. The Transform Component is one of the most important Components, since all of the GameObject's Transform properties are enabled by its use of this Component. It defines the GameObject's position, rotation, and scale in the game world/Scene View. If a GameObject did not have a Transform Component, it would be nothing more than some information in the computer's memory. It effectively would not exist in the world.

The Transform Component also enables a concept called Parenting, which is utilized through the Unity Editor and is a critical part of working with GameObjects. To learn more about the Transform Component