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Learning AndEngine

Learning AndEngine

By : Varga
4.8 (6)
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Learning AndEngine

Learning AndEngine

4.8 (6)
By: Varga

Overview of this book

AndEngine is a very popular open source OpenGL (open graphics library) Android game engine, used to create mobile games quickly while maintaining the ability to fully customize them. This book will guide you through the whole development process of creating a mobile game for the Android platform using one of the most popular and easy-to-use game engines available today. Beginning with the very basics, you will learn how to install AndEngine, gather graphics, add sound and music assets, and design game rules. You will first design an example game and enhance it by adding various features over the course of the book. Each chapter adds more colors, enhances the game, and takes it to the next level. You will also learn how to work with Box2D, a popular 2D physics engine that forms an integral part of some of the most successful mobile games. By the end of the book, you will be able to create a complete, interactive, and fully featured mobile game for Android and publish it to Google Play.
Table of Contents (13 chapters)
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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
1. Setting Up an AndEngine Project
1. Setting Up an AndEngine Project
Prerequisites
Downloading and installing the required software
Getting the AndEngine libraries
Creating a new application
Understanding resolution policies
Summary
2
2. Game Concept and Assets
2. Game Concept and Assets
The game concept
Getting the assets
Scene diagram
Summary
3
3. From Assets to Entities
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3. From Assets to Entities
Managing resources
Entities
Summary
4
4. HUD and Text Display
4. HUD and Text Display
Fonts and text
Writing text
HUD
Working with toasts
Localization
Debug output
Summary
5
5. Basic Interactions
5. Basic Interactions
A simple animation
User input
Collision detection
Using correct threads to perform actions
Summary
6
6. Physics
6. Physics
The physics engine
Adding physics
Summary
7
7. Detecting Collisions and Reacting to Events
7. Detecting Collisions and Reacting to Events
Collisions
Game events
Playing sounds on events
Summary
8
8. Advanced Physics
8. Advanced Physics
The Box2D Debug Draw extension
Assembling bodies from fixtures
Collision filtering
Joints
Summary
9
9. Adding a Menu and Splash Scene
9. Adding a Menu and Splash Scene
Managing multiple scenes
Storing values
Summary
10
10. Polishing the Game
10. Polishing the Game
What is polishing?
Adding music
Adding animations using entity modifiers
Particle systems
Parallax background
Shaders
Summary
11
11. Testing, Publishing, and What's Next
11. Testing, Publishing, and What's Next
Creating a production APK
Testing with the production APK
Testing on multiple devices
Getting in touch with the community
Publishing the game to the Google Play store
Promotion
Next steps
Summary
12
Index
Index

Entities

Everything you can display in AndEngine is an entity. The Entity class is a basic class that stands on top of the hierarchy. The Entity class has all the parameters the displayable objects need, such as position, scale factor, color, and so on. But on its own, it doesn't display anything.

The Entity class can also have children, both in Java class hierarchy and in the hierarchy of AndEngine objects.

For the former case, let's take the Sprite class as an example. A sprite in AndEngine is a simple image rendered on a quad (a square made of two triangles). The Sprite class extends the Shape class, which already knows what to do when the programmer sets its height and width; therefore, the Sprite class doesn't need to implement it. Also, the Shape class extends the Entity class. See the following diagram for another example:

Entities

The latter case means that you can attach one entity to another. It doesn't matter what type it is, whether it's a sprite, shape, or anything...

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