10. The Battle Begins | Mastering Unity 2D Game Development

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Mastering Unity 2D Game Development - Second Edition

By : Dr. Ashley Godbold, Jackson

3.9 (12)

Mastering Unity 2D Game Development

3.9 (12)

By: Dr. Ashley Godbold, Jackson

Overview of this book

The Unity engine has revolutionized the gaming industry, by making it easier than ever for indie game developers to create quality games on a budget. Hobbyists and students can use this powerful engine to build 2D and 3D games, to play, distribute, and even sell for free! This book will help you master the 2D features available in Unity 5, by walking you through the development of a 2D RPG framework. With fully explained and detailed C# scripts, this book will show you how to create and program animations, a NPC conversation system, an inventory system, random RPG map battles, and full game menus. After your core game is complete, you'll learn how to add finishing touches like sound and music, monetization strategies, and splash screens. You’ll then be guided through the process of publishing and sharing your game on multiple platforms. After completing this book, you will have the necessary knowledge to develop, build, and deploy 2D games of any genre!

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Overview

1. Overview

Getting assets

Unity's 2D features

Changes to Unity 5

Summary

2. Building Your Project and Character

2. Building Your Project and Character

Project overview and structure

Creating the project

Creating a scene

Sprite system

GameObjects and components

Classes

Planning behaviors

Coding with components

Going further

Summary

3. Getting Animated

3. Getting Animated

Fundamentals of sprite animation

Animating the main character

Going further

Summary

4. The Town View

4. The Town View

Backgrounds and layers

Building the scene

Working with the camera

Transitioning and bounds

Going further

Summary

5. Working with Unitys UI System

5. Working with Unitys UI System

UI Canvas

UI Text and Images

UI Layout and Rect Transform

UI Buttons

Going further

Summary

6. NPCs and Interactions

6. NPCs and Interactions

Considering an RPG

Advanced programming techniques

Communicating between GameObjects

Background tasks and coroutines

Serialization and scripting

Adding NPCs and a conversation system to our game

Going further

Summary

7. The World Map

7. The World Map

The larger view

Creating our game's map

Leaving town

Returning to town

Going further

Summary

8. Encountering Enemies and Running Away

8. Encountering Enemies and Running Away

Event systems

Exploring randomness

Basic Artificial Intelligence

State machines

Sensors

Setting up your battle scene

Going further

Summary

9. Getting Ready to Fight

9. Getting Ready to Fight

Setting up our battle state manager

Efficient RPG UI overlays

Bring on the GUI

Going further

Summary

10. The Battle Begins

10. The Battle Begins

Designing an interesting battle system

Preparing to attack a single enemy

Beefing up the enemy AI

Selecting an attack

Selecting a target

Attack! Attack!

Using particle effects to represent an attack

Finishing up the battle

Going further

Summary

11. Shopping for Items

11. Shopping for Items

Why do we shop?

The power of an item

Building your shop

Laying out your inventory

Creating a shop and inventory

Going further

Summary

12. Sound and Music

12. Sound and Music

Choosing the appropriate sound and music

Where to get sound and music for your game

Audio listeners and audio sources

Adding background music

Adding sound effects

Muting/unmuting audio

Going further

Summary

13. Putting a Bow on It

13. Putting a Bow on It

Building in-game menu structures

Finishing our splash screen

Building our start screen

Extending the editor

Working with settings

Going further

Summary

14. Deployment and Beyond

14. Deployment and Beyond

Handling platform differences

Pushing code from Unity

Building your assets

Packaging gotchas

Distributing to mobile

Social network integration

Monetization

Going further

Summary

Beefing up the enemy AI

At the moment, Dragon is just a sprite drawn on the screen with an AI system that just sits idle in the background. So, let's expand on this and give our Dragons some muscle power.

As stated earlier, to keep the player engaged, you need to have a varied amount of enemies in the battle and they need to be challenging enough to make the player think and apply tactics.

The enemy profile/controller

First, we'll create a new profile for the enemies, starting off with a new enumeration for the enemy class. Create a new C# script named EnemyClass in Assets\Scripts\Classes and replace its contents with the following code:

public enum EnemyClass 
{ 
  Dragon, 
  Blob, 
  NastyPeiceOfWork 
}

I've used just a couple of examples, as we will only be using the Dragon for now. Next, create a new Enemy class C# script in the same folder, as follows:

public class Enemy : Entity 
{ 
 
  public EnemyClass Class; 
}

The preceding code...

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