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SDL Game Development.pdf

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    Cover
    Copyright
    Credits
    About the Author
    About the Reviewers
    www.PacktPub.com
    Table of Contents
    Preface
    Chapter 1: Getting Started with SDL
    Why use SDL?
    What is new in SDL 2.0?
    Migrating SDL 1.2 extensions
    Setting up SDL in Visual C++ Express 2010
    Using Mercurial to get SDL 2.0 on Windows
    Cloning and building the latest SDL 2.0 repository
    I have the library; now what?
    Hello SDL
    An overview of Hello SDL
    SDL initialization flags
    SDL renderer flags
    What makes up a game
    Breaking up the Hello SDL code
    What does this code do?
    The Game class
    Fullscreen SDL
    Summary
    Chapter 2: Drawing in SDL
    Basic SDL drawing
    Getting some images
    Creating an SDL texture
    Source and destination rectangles
    Animating a sprite sheet
    Flipping images
    Installing SDL_image
    Using SDL_image
    Tying it into the framework
    Creating the texture manager
    Using texture manager as a singleton
    Summary
    Chapter 3: Working with Game Objects
    Using inheritance
    Implementing polymorphism
    Using abstract base classes
    Should we always use inheritance?
    Could the same thing be achieved with a simpler solution?
    Derived classes should model the "is a" relationship
    Possible performance penalties
    Putting it all together
    Summary
    Chapter 4: Exploring Movement and Input Handling
    Setting up game objects for movement
    What is a vector?
    Some common operations
    Addition of two vectors
    Multiply by a scalar number
    Subtraction of two vectors
    Divide by a scalar number
    Normalizing a vector
    Adding the Vector2D class
    Adding velocity
    Adding acceleration
    Creating fixed frames per second
    Input handling
    Creating our input handler class
    Handling joystick/gamepad input
    SDL joystick events
    Initializing joysticks
    Listening for and handling axis movement
    Dealing with joystick button input
    Handling mouse events
    Using mouse button events
    Handling mouse motion events
    Implementing keyboard input
    Wrapping things up
    Summary
    Chapter 5: Handling Game States
    A simple way for switching states
    Implementing finite state machines
    A base class for game states
    Implementing FSM
    Implementing menu states
    Function pointers and callback functions
    Implementing the temporary play state
    Pausing the game
    Creating the game over state
    Summary
    Chapter 6: Data-driven Design
    Loading XML files
    Basic XML structure
    Implementing Object Factories
    Using Distributed Factories
    Fitting the factory into the framework
    Parsing states from an XML file
    Loading the menu state from an XML file
    Loading other states from an XML file
    Loading the play state
    Loading the pause state
    Loading the game over state
    Summary
    Chapter 7: Creating and Displaying Tile Maps
    What is a tile map?
    Getting familiar with the Tiled application
    Parsing and drawing a tile map
    Creating the TileLayer class
    Creating the LevelParser class
    Parsing tilesets
    Parsing a tile layer
    Drawing the map
    Scrolling a tile map
    Parsing object layers
    Developing the ObjectLayer class
    Summary
    Chapter 8: Creating Alien Attack
    Using the SDL_mixer extension for sound
    Creating the SoundManager class
    Setting up the basic game objects
    GameObject revamped
    SDLGameObject is now ShooterObject
    Player inherits from ShooterObject
    Lots of enemy types
    Adding a scrolling background
    Handling bullets
    Two types of bullets
    The BulletHandler class
    Dealing with collisions
    Creating a CollisionManager class
    Possible improvements
    Summary
    Chapter 9: Creating Conan the Caveman
    Setting up the basic game objects
    No more bullets or bullet collisions
    Game objects and map collisions
    ShooterObject is now PlatformerObject
    The Camera class
    Camera-controlled map
    The Player class
    Possible additions
    Summary
    Index
    SDL Game Development Discover how to leverage the power of SDL 2.0 to create awesome games in C++ Shaun Ross Mitchell BIRMINGHAM - MUMBAI
    SDL Game Development Copyright © 2013 Packt Publishing All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews. Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book. Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information. First published: June 2013 Production Reference: 1170613 Published by Packt Publishing Ltd. Livery Place 35 Livery Street Birmingham B3 2PB, UK. ISBN 978-1-84969-682-1 www.packtpub.com Cover Image by Shaun Mitchell (shaunmitchell84@googlemail.com)
    Credits Author Shaun Ross Mitchell Project Coordinator Hardik Patel Reviewers Luka Horvat Mårten Möller Acquisition Editor Edward Gordon Lead Technical Editor Savio Jose Chalini Snega Victor Technical Editors Jeeten Handu Kaustubh S. Mayekar Anita Nayak Proofreader Bernadette Watkins Indexer Rekha Nair Graphics Ronak Dhruv Production Coordinator Prachali Bhiwandkar Cover Work Prachali Bhiwandkar
    About the Author Shaun Mitchell is a developer at a high profile online gaming company. He holds a BSc in Game Programming and Development from Qantm College / SAE Institute London. Shaun is also a moderator and active member of the programming community. I would like to thank Jason Colman, my university lecturer, whose knowledge and insight into C++ and game programming has been the foundation of my skillset. I would also like to thank the community for the interesting discussions and topics to hone my skills with. Thank you to John Bayly for the background image on the front cover. Many thanks to my family for their continued support and importantly, a huge thank you to my girlfriend, Emma, who tirelessly proofread my chapters while also keeping me running on a generous amount of caffeine.
    About the Reviewers Luka Horvat is an enthusiastic software and game developer who got fascinated by computer science in his early years. He chose to study his passion while working on many different projects and technologies. Throughout the years he gained a lot of knowledge and experience, and he wanted to share that with others. He is proficient in many different programming languages, with C++ as his main one; and is passionate about game development. So he started teaching it and currently manages different courses for in this area. He continues to pursue his career in computer science by working on a wide variety of projects and sharing them with others. I would like to thank my friends and family who helped me produce this book. Mårten Möller is an independent game developer who has previously worked at Imperial Game Studios. I would like to thank my family and friends. All of you are amazing.
    www.PacktPub.com Support files, eBooks, discount offers and more You might want to visit www.PacktPub.com for support files and downloads related to your book. Did you know that Packt offers eBook versions of every book published, with PDF and ePub files available? You can upgrade to the eBook version at www.PacktPub. com and as a print book customer, you are entitled to a discount on the eBook copy. Get in touch with us at service@packtpub.com for more details. At www.PacktPub.com, you can also read a collection of free technical articles, sign up for a range of free newsletters and receive exclusive discounts and offers on Packt books and eBooks. TM http://PacktLib.PacktPub.com Do you need instant solutions to your IT questions? PacktLib is Packt's online digital book library. Here, you can access, read and search across Packt's entire library of books. Why Subscribe? • Fully searchable across every book published by Packt • Copy and paste, print and bookmark content • On demand and accessible via web browser Free Access for Packt account holders If you have an account with Packt at www.PacktPub.com, you can use this to access PacktLib today and view nine entirely free books. Simply use your login credentials for immediate access.
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