Learning C# by Developing Games with Unity 5.x - Second Edition电子书

Learning C# by Developing Games with Unity 5.x Second Edition

Table of Contents

Learning C# by Developing Games with Unity 5.x Second Edition

Credits

About the Author

About the Reviewer

www.PacktPub.com

eBooks, discount offers, and more

Why subscribe?

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Downloading the color images of this book

Errata

Piracy

Questions

1. Discovering Your Hidden Scripting Skills and Getting Your Environment Ready

Prerequisite knowledge to use this book

Dealing with scriptphobia

Downloading Unity

Obtaining a free license

Teaching behavior to GameObjects

Using Unity's documentation

Do I need to know all that?

C# documentation – where to find it? Do I need it at all?

The Unity community – asking others for help

Working with C# script files

Lots of files can create a mess

Why does my Project tab look different?

Creating a C# script file

Introducing the MonoDevelop code editor

Syncing C# files between MonoDevelop and Unity

Opening LearningScript in MonoDevelop

The namespace – highlighted in blue

The class definition – highlighted in green

Watching for possible gotchas while creating script files in Unity

Fixing synchronization if it isn't working properly

Adding our script to GameObject

Instance? What is it?

Summary

2. Introducing the Building Blocks for Unity Scripts

Understanding what a variable is and what it does

Naming a variable

A variable name is just a substitute for a value

Creating a variable and seeing how it works

Declaration

Assignment

Click on Play!

Changing variables

Watching for a possible gotcha when using public variables

What is a method?

Using the term "method" instead of "function"

Method names are substitutes, too

Introducing the class

Inheritance

The Start(), Update(), and Awake() methods and the execution order

Components that communicate using dot syntax

What's with the dots?

Making decisions in code

Using the NOT operator to change the condition

Checking many conditions in an if statement

Using else if to make complex decisions

Making decisions based on user input

Paper and pencil are powerful tools


Summary

3. Getting into the Details of Variables

Writing C# statements properly

Understanding component properties in Unity's Inspector

Variables become component properties

Unity changes script and variable names slightly

Changing a property's value in the Inspector panel

Displaying public variables in the Inspector panel

Private variables

Naming your variables properly

Beginning variable names with lowercase

Using multiword variable names

Declaring a variable and its type

The most common built-in variable types

Assigning values while declaring a variable

Where you declare a variable is important

Variable scope – determining where a variable can be used

Summary

4. Getting into the Details of Methods

Using methods in a script

Naming methods properly

Beginning method names with an uppercase letter

Using multiword names for a method

Parentheses are part of the method's name

Defining a method the right way

The minimum requirements for defining a method

Understanding parentheses – why are they there?

Specifying a method's parameters

How many parameters can a method have?

Returning a value from a method

Returning the value

Example

Summary

5. Lists, Arrays, and Dictionaries

What is an array?

Declaring an array

Storing items in the List

Common operations with Lists

List<T> versus arrays

Retrieving the data from the Array or List<T>

Checking the size

ArrayList

Dictionaries

Accessing values

How do I know what's inside my Hashtable?

Summary

6. Loops

Introduction to loops

The foreach loop

The for loop

An example

The while loop

while versus for loops

Loops in statements

Modulo

Searching for data inside an array

Breaking the loop

Summary

7. Object, a Container with Variables and Methods

Working with objects is a class act

Few facts

Example

Instantiating an object

Bored yet?

Using methods with objects

Custom constructors

Overloading

Summary

8. Let's Make a Game! – From Idea to Development

Your first game – avoiding the trap of the never-ending concept

The idea

Game mechanics and core components

Breaking a complex idea into smaller parts

Jake on the mysterious planet – the feature list

Procedural level generation

An animated 2D character

Physics

Mouse and touch controls

Collectables and obstacles

Scoring

UI – the user interface

Target platform and resolution

Target screen resolution

Summary

9. Starting Your First Game

Setting up a new Unity project for our game

Backup

Keeping your project clean

Preparing the player prefab

Rigidbody2D

CircleCollider2D

PlayerController

User input

Jump

Animator

Running

Code

PlayerController.cs

Summary

10. Writing GameManager

Gameplay loops

Singleton class

Starting the game

Setting up input keys

Using triggers

Restarting the game

Setting up the player starting position

Code in this chapter

Summary

11. The Game Level

Generating levels versus designed levels

Creating a level chunk

Planning the LevelGenerator class

Writing LevelGenerator

Commenting on your code

Creating a copy of the level piece

Instantiating

Vector3

Testing LevelGenerator

Extending the level

The code used in this chapter

Summary

12. The User Interface

Introducting the Unity UI

Views

Constructing the view UI – how to keep things clean

Target screen resolution

Recognizing events

Buttons

A simple button

Image

The Button component

Interaction

The Button action

Hiding and showing the Canvas

Reference exceptions

GameView

Game Over

The code in this chapter

Summary

13. Collectables — What Next?

Collectables

The coin prefab

The Collectable class

High score and persisting data

The Update function and UI values

What next?

The code in this chapter

Summary

Index