Consider this talk a 45 minute boot camp about libgdx. Mario introduces you to the overall idea behind libgdx, show you how to create your first project, run and debug it on all supported platforms and introduce the bare minimum of libgdx's API to write a very simple game. After attending the talk you should be well equipped to dive into the documentation and samples of libgdx to start writing your first game!

1. libGDX
bootcamp

2. What is libGDX?
• Cross-platform game development framework
• Java + C/C++ for performance hungry code
• Use Java, Scala, Kotlin, ...
• Write once ...
http://libgdx.badlogicgames.com
http://github.com/libgdx/libgdx
@badlogicgames, @libgdx

3. Deploy to

4. Develop with

5. Who‘s using it?

6. Who‘s using it?

7. Features

8. Features
Low-Level
Mid-Level
High-Level

9. Features
Low-Level
Mid-Level
High-Level Application Management
File I/O
Networking
Audio
Graphics (OpenGL ES 2.0/3.0)
Input

10. Features
Low-Level
Mid-Level
High-Level
Meshes, Shaders, Textures, ...
Sprite & Polygon Batching
Texture Atlas, Bitmap Font
Asset Manager
Math Library
Custom Collections
JSON/XML (de-)serialization

11. Features
Low-Level
Mid-Level
High-Level
Box2D & Bullet Physics
Map Loading
2D Scene Graph + UI Toolkit
3D API

12. It‘s a framework, not an engine
Mix & Match, use and combine features from any level

13. Read The Fine Manual!
http://libgdx.badlogicgames.com/documentation.h
tml

14. Lets write a game
Actually, we‘ll just quickly prototyp a game
A real game needs more code and assets 

15. The plane that couldn‘t fly good
Thanks Kenney! http://kenney.nl/

16. Assets
Plane, 3 frames, 88x73px
Ground, 808x71px
Rock, up & down, 108x239pxBackground, 800x480
music.mp3
explode.wav
arial.fnt, arial.png

17. Live-Coding Session
https://github.com/badlogic/theplanethatcould
ntflygood

18. Thanks!

19. Low-Level Layer
Application Management
• Lifecycle events
• Window management
• Rendering loop
• Threading
Gdx.app, ApplicationListener, LwjglApplication, AndroidApplication,
IOSApplication, GwtApplication ,...

20. Low-Level Layer
File I/O
• Unified across platforms
• Preferences (persistent map)
• Sane file manipulation API
Gdx.files, FileHandle, ...

21. Low-Level Layer
Networking
• Open URL in browser
• HTTP, HTTPs API ala HttpClient
• Socket API
Gdx.net, HttpRequest, HttpResponse, Socket,
ServerSocket, ...

22. Low-Level Layer
Audio
• Streaming playback for music
• In-memory playback for sound effects
• PCM read/write
• Panning, volume, pitch
Gdx.audio, Sound, Music, AudioDevice, ...

23. Low-Level Layer
Graphics
• OpenGL ES 2.0, 3.0
• Display mode API
• Continuous & non-continuous rendering
• Custom 2D Bitmap manipulation API
Gdx.graphics, GL20, GL30, Pixmap, PixmapIO, ...

24. Low-Level Layer
Input
• Keyboard, Mouse, Touch
• Accelerometer, Compass, Vibrator
• On-screen Keyboard
Gdx.input, InputProcessor, ...

25. Mid-Level Layer
Graphic Utilities
• Shaders, textures, meshes, framebuffer objects
• Polygon & spritebatch, texture regions, texture
atlas, bitmap fonts, 2D particle system, shape
renderer
ShaderProgram, Texture, TextureRegion, Mesh, Framebuffer,
PolygonBatch, SpriteBatch, TextureAtlas, BitmapFont, ...

26. Mid-Level Layer
Input
• Input Multiplexing
• Gesture Detector
InputMultiplexer, GestureDetector

27. Mid-Level Layer
Math
• Matrices, vectors, quaternions
• Bounding shapes, Intersection testing
• Cameras
• Splines
• Triangulation
Matrix4, Matrix3, Vector2, Vector3, Quaternion, BoundingBox, Rectangle,
Circle, OrthographicCamera, PerspectiveCamera, CatmullRomSpline,
DelaunayTriangulator, ...

28. Mid-Level Layer
Asset Manager
• Threaded
• Asynchronous loading
• Reference counting
• Pluggable API
AssetManager, ...

29. Mid-Level Layer
Custom Collections & Serialization
• Lists, maps, sets, pools
• Garbage Collector aware
• JSON POJO (de-)serialization
• XML parsing/writting
Array, ObjectMap, Pool, Json, XmlReader, ...

30. High-Level Layer
Physics
• Box2D JNI wrapper
• Bullet JNI wrapper

31. High-Level Layer
Map Loading
• Orthographic & isometric tile maps
• Generic API

32. High-Level Layer
2D Scene Graph
• Tweening
• Skinable UI toolkit
• Table-based layouting
• Viewport management
Stage, Skin, Button, Table, ...

33. High-Level Layer
3D API (WIP!)
• FBX, DAE, OBJ support
• GPU Skinning
• Material system
• Shadow Mapping, Cube Mapping, ...
• Extremely flexible Batching API
ModelBatch, ModelInstance, Material, Environment, Renderable,
RenderableProvider, Shader, ...

34. Extensions
• Not part of the core API
• gdx-freetype (desktop, Android, iOS)
• gdx-bullet (desktop, Android, iOS)
• gdx-box2d (desktop, Android, iOS, HTML)
• gdx-controllers (desktop, Android, iOS, HTML)