This document provides an overview of LibGDX, an open-source game development framework that allows developers to write games in Java that can be deployed to desktop, Android, iOS, HTML5 and other platforms. It has a multi-layered API that supports graphics, input, audio, networking and more. Games can be developed across platforms with a single codebase using tools like Gradle for building. The framework includes both low-level APIs for graphics and input as well as high-level features for UI, scene management, physics and extensions. It has a large community of developers and many published games that use LibGDX.

1. cross-platform game development

2. ●
mature project, at 1.7.1 release
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snapshots built on every commit
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fork us, push to us!

3. Overview
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game development framework
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written in java, c/c++ and js
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framework - !engine
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fast development and prototyping
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use any JVM language you want (with some caveats)
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super fast
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multi-layered API
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target multiple platforms with a single codebase
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extensive community of developers

4. Platforms

5. Languages
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typically java
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any JVM language with java interoperability
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clojure, kotlin, python, ruby, scala, groovy….
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caveats including 'support' and loss of html

6. Development environment
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setup tool generates gradle scripts
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use any IDE you like
Intellij IDEA Eclipse Netbeans chuck norris
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do most developing testing and running with the desktop platform, abuse hotswapping
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deploy to all platforms with one task

7. Gradle?
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dependency management, build automation
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open source
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use it to build
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use it in the background
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dont use It at all
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trivial to keep up to date with the latest release of LibGDX, or even the bleeding edge
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extend provided scripts to automate almost every boring task you have to do in production
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deploy to multiple app stores using their api with a single task
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keep descriptions/assets on multiple store pages up to date with a single task
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push your project onto CI with no additional configuration, (build live html version also)

8. The backends and tech
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Android, GLES 2.0
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Lwjgl (2.x) (Win, Linux, MacOS), OpenGL 2.0, 3.0
– 3.x in development!
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RoboVM, iOS, GLES 2.0
– bytecode → native ARM|x86 code
– super fast
– wizards
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GWT – HTML/js, WebGL
– java source code → js
– reflection magic
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Headless

9. API Levels
Low Level
Mid Level
High Level

10. Features and API levels
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graphics (OpenGL ES 2.0/3.0 interfaces)
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input, keyboard, mouse, touch, accelerometer
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audio, read/write, Open AL, Android Pools
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networking, tcp http
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file I/O
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handling lifecycle
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reflection wrapper
Low Level

11. Features and API levels
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Mesh, shaders, textures, sprites...
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batching sprites/polygons
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fonts, textureatlas
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assetmanager
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custom collections
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json/xml serialization
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util classes, math, shapes
Mid Level

12. Features and API levels
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extensions, box2d, bullet physics
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2D scene graph + UI toolkit. all the widgets
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maps api
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3D API
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I18NBundle
High Level

13. 3D API
– environment, cubemaps, reflection, specular, normal mapping etc
– directional lights, point , spot, shadow mapping
– node tree, including animations
– gpu skinning
– decal batching
– model batching with cache
– particles
– (probably) the most complete java bullet wrapper for 3D physics

14. Extensions
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Box2D and Box2D lights
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Bullet Physics
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Ashley, Entity component system
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Tools Collection
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Controllers extension
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GDX-AI
– pathfinding
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A*
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path Smoothing
– Decision making
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state machines, behavior trees
– messaging
– movement
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steering
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formation motion
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GDX-Pay

15. Tools
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texture packer
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model converter (Fbx-Conv)
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freetype convertor, ttf to bitmap font
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2D and 3D particle editors

16. Third Party
← Overlap2D
Open source game UI, level and
content editor
VisUI ->
Open source UI toolkit extension,
extra widgets and skin

17. Quick start
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check your dev environment is setup
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download project generator
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supply info, choose extensions
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generate
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import
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Run

18. Documentation and Source
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Source
– https://github.com/libgdx/libgdx
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Wiki ultimate guide for everything
– https://github.com/libgdx/libgdx/wiki
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Starting point for docs
– https://libgdx.badlogicgames.com/documentation.html

19. Licensing
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apache 2
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completely free, no strings attached
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we love to get credit in case you do release a game using
LibGDX, but its not mandatory

20. Examples
Alchemist's Awakening, Osaris Games

21. Examples
Ingress, Niantic (internal startup at google)

22. Examples
Halfway, Robotality

23. Examples
Spine, Esoteric Software

24. Examples
Space Grunts, Orangepixel

25. Examples
Delver, Priority Interrupt

26. LibGDX game jam
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18th Dec - 18th Jan
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Prizes!
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Mac Mini, iPad, iTouch
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halfway steam keys
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shirts!
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taking part (if you dont
win)

27. cross-platform game development
@libgdx
@badlogicgames
https://libgdx.badlogicgames.com/
@asidikgames
#libgdx on irc.freenode.net