Libgdx Cross-platform Game Development Cookbook by Márquez, David Saltares -- Read -- Imperial Library of Trantor

Index

Libgdx Cross-platform Game Development Cookbook

Table of Contents Libgdx Cross-platform Game Development Cookbook Credits About the Authors About the Reviewers www.PacktPub.com

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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. Diving into Libgdx

Introduction Setting up a cross-platform development environment

Getting ready How to do it…

Java Development Kit

Windows and Mac users GNU/Linux users

Eclipse Android SDK

Mac users GNU/Linux users All users

Eclipse plugins XCode Fixing character encoding and line endings Making sure everything is in order

How it works… There's more… See also

Creating a cross-platform project

Getting ready How to do it… How it works… There's more… See also

Understanding the project structure and application life cycle

Getting ready How to do it…

Using logging to get to know the application life cycle Starter classes and configuration

Desktop starter Android starter HTML starter iOS starter

How it works… There's more…

Living comfortably with ApplicationAdapter Managing a multiscreen application with Game

See also

Updating and managing project dependencies

Getting ready How to do it…

Gradle build file primer Updating existing dependencies Adding Libgdx extensions

Bullet

Core Desktop Android iOS

FreeTypeFont

Core Desktop Android iOS

Controllers

Core Desktop Android HTML5

Box2D

Core Desktop Android iOS HTML5

Tools

Core Desktop

Core Android HTML

Adding external repositories Adding additional file dependencies Managing GWT dependencies

There's more… See also

Using source control on a Libgdx project with Git

Getting ready How to do it… How it works…

Basic operations Git branches Gitignore files

There's more… See also

Importing and running the Libgdx official demos

Getting ready How to do it… How it works… There's more…

2. Working with 2D Graphics

Introduction Texture rendering with SpriteBatch

Getting ready How to do it… How it works…

2D rendering using 3D techniques Coordinate system and camera setup Assets location in Libgdx Draw order Texture filters

There's more… See also

More effective rendering with regions and atlases

Getting ready How to do it…

Packing PNG files into an atlas Rendering regions of an atlas

How it works…

Atlas file format How SpriteBatch works A note on texture size limitations

There's more… See also

Taking advantage of Libgdx sprites

Getting ready How to do it… How it works… There's more…

Using bounds for collision detection

See also

Rendering sprite-sheet-based animations

Getting ready How to do it… How it works… There's more…

Using different play modes Checking when an animation has finished Handling a character with many animations

See also

Understanding orthographic cameras

Getting ready How to do it… How it works… There's more…

Rendering UI on top of the game world Split screen

See also

Using ShapeRenderer for debug graphics

Getting ready How to do it…

Rendering lines Rendering circles Rendering rectangles Rendering points Rendering triangles

How it works… There's more… See also

Handling multiple screen sizes with viewports

Getting ready How to do it… How it works… There's more…

Getting the most out of Viewport Working with two cameras and viewports Floating elements Build your own Viewport implementation

See also

3. Advanced 2D Graphics

Introduction Achieving juicy effects with particles

Getting ready How to do it…

The basics of Particle Editor Rendering particle effects with Libgdx

How it works… There's more… See also

Frame buffers and image composition

Getting ready How to do it… How it works… There's more…

Welcome to the world of shaders

Getting ready How to do it… How it works…

Data types Vertex attributes Uniforms OpenGL ES precision specifiers

There's more…

The sepia effect Inverted colors

Passing parameters into shader programs

Getting ready How to do it… How it works… There's more…

Detecting shader compiler errors More efficient uniform settings

2D depth of field shader

Getting ready How to do it… There's more… See also

Embedding a Libgdx window into a Java desktop application

Getting ready How to do it… How it works… There's more… See also

4. Detecting User Input

Introduction Detecting user input via event polling

Getting ready How to do it… How it works… There's more…

Checking input availability Showing the on-screen keyboard

Detecting user input via event listening

Getting ready How to do it…

Event polling versus event listening

How it works… There's more…

Managing multiple listeners at once

Getting ready How to do it… How it works… See also

Detecting more complex gestures

Getting ready How to do it… How it works… There's more…

Gesture polling

Introducing the controllers API

Getting ready How to do it…

Including the controllers extension Enumerating controllers Controller state polling Controller event listening

How it works… There's more…

Controller mappings Handling disconnections

See also

Input mapping for cross-platform development

Getting ready How to do it…

Input contexts Input profiles Event notifications with InputActionListener Input mapping in action

How it works… There's more…

5. Audio and File I/O

Introduction Playing short sound effects

Getting ready How to do it… How it works… There's more…

Handling sounds individually Changing the volume Creating looping sounds Managing effect priorities

See also

Audio streaming for background music

Getting ready How to do it… How it works… There's more…

Checking the playback state Looping the background music

See also

Optimizing audio files to reduce download sizes

Getting ready How to do it… How it works… There's more… See also

Procedural audio generators

Getting ready How to do it… How it works… There's more… See also

Engine sounds with dynamic audio

Getting ready How to do it… How it works… There's more…

Controlling direction through panning Music transitions

See also

The 2D space sound system

Getting ready How to do it… How it works… There's more… See also

The first approach to file handling in Libgdx

Getting ready How to do it…

Retrieving basic information from files Traversing tree structures Writing to and reading from files Copying and deleting files and directories

How it works… There's more…

Creating temporary files Filtering directory listings File streaming

See also

Using preferences to store game states and options

Getting ready How to do it… How it works… There's more… See also

The XML parsing primer

Getting ready How to do it… How it works… There's more… See also

JSON serialization and deserialization

Getting ready How to do it…

Reading objects from JSON Writing objects to JSON Manual JSON parsing

How it works… There's more…

The Serializable interface The Serializer interface

See also

6. Font Rendering

Introduction Generating and rendering bitmap fonts

Getting ready How to do it…

Using Hiero to generate bitmap font files Rendering bitmap font files with Libgdx

How it works… There's more… See also

Baking effects into fonts using Hiero

Getting ready How to do it… How it works… See also

Scaling friendly font rendering with distance fields

Getting ready How to do it…

Generating distance field fonts with Hiero Distance field fonts shader Rendering distance field fonts in Libgdx

How it works… There's more…

Dynamic font effects using distance fields

Getting ready How to do it… How it works… There's more…

7. Asset Management

Introduction Getting to know AssetManager

Getting ready How to do it… How it works… There's more… See also

Asynchronous asset loading

Getting ready How to do it… How it works… There's more… See also

Creating custom asset loaders

Getting ready How to do it…

Writing our own asset type Writing our own asset loader Summarizing...

How it works… There's more… See also

Managing groups of assets for bigger games

Getting ready How to do it…

Giving shape to the idea Empowering AssetManager

How it works… There's more… See also

8. User Interfaces with Scene2D

Introduction Introducing the Scene2D API

Getting ready How to do it…

Creating a custom actor Rendering your custom actor Manipulating an actor

Simple actions Complex actions

How it works… There's more… See also

Widget collection overview

Getting ready How to do it…

Label Image Button TextButton ImageButton ImageTextButton CheckBox TextField List ScrollPane SelectBox ProgressBar Slider Touchpad Stack Tree SplitPane Window Dialog

How it works… There's more… See also

Creating a basic menu screen using tables

Getting ready How to do it… How it works…

Expand Fill Uniform Sizing Padding and spacing Alignment Columns and rows Defaults

There's more… See also

Skin customization

Getting ready How to do it… How it works… There's more… See also

Creating new widgets

Getting ready How to do it…

Creating a widget Using a widget

How it works… There's more…

9. The 2D Maps API

Introduction Creating maps with Tiled and loading them into Libgdx

Getting ready How to do it…

Creating a basic map with Tiled Loading and rendering a Tiled map in Libgdx

How it works… There's more…

Adding and querying map metadata

Getting ready How to do it…

Object layers and properties in Tiled Querying map metadata from Libgdx

How it works… There's more… See also

Developing your own map loaders and renderers

Getting ready How to do it… There's more…

10. Rigid Body Physics with Box2D

Introduction Introducing Box2D

Getting ready How to do it… How it works… There's more… See also

Introducing more complex shapes

Getting ready How to do it…

Generating JSON shape data Loading JSON shape data into Libgdx

How it works… There's more… See also

Introducing joints

Getting ready How to do it…

WeldJoint DistanceJoint RopeJoint FrictionJoint RevoluteJoint PrismaticJoint PulleyJoint GearJoint WheelJoint

There's more… See also

Real-life joints example – bike simulator

Getting ready How to do it… There's more…

Reacting to collisions

Getting ready How to do it…  How it works… There's more… See also

Sensors and collision filtering

Getting ready How to do it…

Sensors Group collision filtering Flexible collision filtering

How it works… There's more… See also

Querying the world

Getting ready How to do it…

Raycasting Area querying

How it works… There's more… See also

Building a physics world from level data

Getting ready How to do it…

Defining materials Generating the physics metadata Populating your world

How it works… There's more… See also

Implementing a deferred raycaster

Getting ready How to do it…

The RayCastManager class Using RayCastManager

How it works… There's more… See also

The fixed timestep approach

Getting ready How to do it…

Variable timestep Fixed timestep Fixed timestep with interpolation

There's more… See also

11. Third-party Libraries and Extras

Introduction Making libraries compatible with GWT

Getting ready How to do it… There's more… See also

Managing platform-specific code

Getting ready How to do it… There's more…

Smooth animations with Universal Tween Engine

Getting ready How to do it…

Creating your accessor Library usage

Tween – a core class Organizing tweens

How it works…

Dynamic 2D lighting with Box2DLights

Getting ready How to do it… How it works…

RayHandler Types of lights

There's more…

Adding support for localization

Getting ready How to do it…

Creating language files Managing languages Usage example

There's more… See also

Finite state machine and messaging

Getting ready How to do it…

Creating the agents Usage example

How it works… There's more…

Component-based entity systems with Ashley

Getting ready How to do it… How it works… There's more… See also

Skeletal animations with Spine

Getting ready How to do it… How it works… There's more…

12. Performance and Optimizations

Introduction Profiling your application with VisualVM

Getting ready How to do it…

Installing VisualVM Changing the launcher Monitoring and profiling

How it works… There's more…

Using Libgdx features to avoid garbage collection

Getting ready How to do it…

Collections Caching Object pooling

There's more…

Avoiding unnecessary render calls with frustum culling

Getting ready How to do it… How it works… There's more…

13. Giving Back

Introduction Releasing your Libgdx game on desktop

Getting ready How to do it… There's more… See also

Releasing your Libgdx game on Android

Getting ready How to do it… There's more…

Releasing your Libgdx game on iOS

Getting ready How to do it… There's more…

Releasing your Libgdx game on browsers

Getting ready How to do it… There's more…

Working from sources

Getting ready How to do it… How it works… See also

Creating a new test for your fresh feature

Getting ready How to do it…

Sending a pull request on GitHub

Getting ready How to do it… There's more… See also

Index

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