2. Working with 2D Graphics
by Alberto Cejas Sánchez, David Saltares Márquez
Libgdx Cross-platform Game Development Cookbook
- 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
- Preface
- 1. Diving into Libgdx
- Introduction
- Setting up a cross-platform development environment
- Creating a cross-platform project
- Understanding the project structure and application life cycle
- Updating and managing project dependencies
- Using source control on a Libgdx project with Git
- Importing and running the Libgdx official demos
- 2. Working with 2D Graphics
- 3. Advanced 2D Graphics
- 4. Detecting User Input
- 5. Audio and File I/O
- Introduction
- Playing short sound effects
- Audio streaming for background music
- Optimizing audio files to reduce download sizes
- Procedural audio generators
- Engine sounds with dynamic audio
- The 2D space sound system
- The first approach to file handling in Libgdx
- Using preferences to store game states and options
- The XML parsing primer
- JSON serialization and deserialization
- 6. Font Rendering
- 7. Asset Management
- 8. User Interfaces with Scene2D
- 9. The 2D Maps API
- 10. Rigid Body Physics with Box2D
- Introduction
- Introducing Box2D
- Introducing more complex shapes
- Introducing joints
- Real-life joints example – bike simulator
- Reacting to collisions
- Sensors and collision filtering
- Querying the world
- Building a physics world from level data
- Implementing a deferred raycaster
- The fixed timestep approach
- 11. Third-party Libraries and Extras
- Introduction
- Making libraries compatible with GWT
- Managing platform-specific code
- Smooth animations with Universal Tween Engine
- Dynamic 2D lighting with Box2DLights
- Adding support for localization
- Finite state machine and messaging
- Component-based entity systems with Ashley
- Skeletal animations with Spine
- 12. Performance and Optimizations
- 13. Giving Back
- Index
In this chapter, we will cover the following recipes:
- Texture rendering with SpriteBatch
- More effective rendering with regions and atlases
- Taking advantage of Libgdx sprites
- Rendering sprite-sheet-based animations
- Understanding orthographic cameras
- Using ShapeRenderer for debug graphics
- Handling multiple screen sizes with viewports
Games are interactive experiences that provide feedback to the player mainly through visual elements and audio cues. As a result, rendering becomes one of the most important pillars games are built upon. This chapter will take us on a journey through the basics of the Libgdx 2D graphics API.
You will learn how to efficiently render both static and animated sprites and handle the view with orthographic cameras. Moreover, we will present a series of solutions on how to deal with different screen sizes and resolutions, a very common problem when targeting tablets and phones.
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