Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Lua Game Development Cookbook

You're reading from   Lua Game Development Cookbook Over 70 recipes that will help you master the elements and best practices required to build a modern game engine using Lua

Arrow left icon
Product type Paperback
Published in Jul 2015
Publisher
ISBN-13 9781849515504
Length 360 pages
Edition 1st Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
Mário Kašuba Mário Kašuba
Author Profile Icon Mário Kašuba
Mário Kašuba
Arrow right icon
View More author details
Toc

Table of Contents (11) Chapters Close

Preface 1. Basics of the Game Engine 2. Events FREE CHAPTER 3. Graphics – Common Methods 4. Graphics – Legacy Method with OpenGL 1.x–2.1 5. Graphics – Modern Method with OpenGL 3.0+ 6. The User Interface 7. Physics and Game Mechanics 8. Artificial Intelligence 9. Sounds and Networking Index

Initializing the audio subsystem


Before using your audio card, you'll need to initialize the sound playback parameters. These parameters are:

  • Sampling frequency

  • Output audio format

  • Number of audio channels and buffer size

It's important to note that LuaSDL can play many sound samples at the same time, where each sound sample uses exactly one sound channel. This is often used for relatively short sounds. Longer sounds such as a game music can be played in the background. However, there's only one background channel, so there is no easy way to mix two songs together.

Getting ready

First, you'll need to initialize the LuaSDL library with its subsystems. It's common practice to just initialize all subsystems at the start.

You can achieve this with two lines of Lua code:

require 'LuaSDL'
assert(SDL.SDL_Init(SDL.SDL_INIT_EVERYTHING) >= 0)

This will prepare all subsystems to be fully operational.

How to do it…

To initialize the audio subsystem, follow these steps:

  1. Normally, you would use the SDL.SDL_OpenAudio...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime