Invent Your Own Computer Games with Python, 4E

452 Pages·2016·5.44 MB·English

by  Al Sweigart

INVENT YOUR OWN COMPUTER GAMES
WITH PYTHON
4TH EDITION
Al Sweigart
San Francisco
INVENT YOUR OWN COMPUTER GAMES WITH PYTHON, 4TH EDITION.
Copyright © 2017 by Al Sweigart.
Some rights reserved. This work is licensed under the Creative Commons Attribution-
NonCommercial-ShareAlike 3.0 United States License. To view a copy of this license, visit
http://creativecommons.org/licenses/by-nc-sa/3.0/us/ or send a letter to Creative Commons, PO Box 1866,
Mountain View, CA 94042, USA.
Printed in USA
First printing
20 19 18 17 16 1 2 3 4 5 6 7 8 9
ISBN-10: 1-59327-795-4
ISBN-13: 978-1-59327795-6
Publisher: William Pollock
Production Editor: Laurel Chun Cover Illustration: Josh Ellingson Interior Design: Octopod Studios
Developmental Editor: Jan Cash Technical Reviewer: Ari Lacenski Copyeditor: Rachel Monaghan
Compositor: Susan Glinert Stevens Proofreader: Paula L. Fleming Indexer: Nancy Guenther
The sprite images in Figure 20-1 on page 302, from left to right, were created by fsvieira, przemek.sz,
LordNeo, and Suppercut. The grass sprite image in Figure 20-2 on page 302 was created by txturs.
These images have been dedicated to the public domain with a CC0 1.0 Public Domain Dedication.
For information on distribution, translations, or bulk sales, please contact No Starch Press, Inc.
directly: No Starch Press, Inc.
245 8th Street, San Francisco, CA 94103
phone: [phone]; [email protected]
www.nostarch.com
Library of Congress Cataloging-in-Publication Data
Names: Sweigart, Al, author.
Title: Invent your own computer games with Python / by Al Sweigart.
Description: San Francisco : No Starch Press, Inc., [2017]
Identifiers: LCCN 2016037817 (print) | LCCN 2016044807 (ebook) | ISBN
9781593277956 | ISBN 1593277954 | ISBN 9781593278113 (epub) | ISBN
159327811X (epub) | ISBN 9781593278120 (mobi) | ISBN 1593278128
(mobi)
Subjects: LCSH: Computer games--Programming. | Python (Computer program
language)
Classification: LCC QA76.76.C672 S785 2017 (print) | LCC QA76.76.C672
(ebook)
| DDC 794.8/1526--dc23
LC record available at https://lccn.loc.gov/2016037817
No Starch Press and the No Starch Press logo are registered trademarks of No Starch Press, Inc.
Other product and company names mentioned herein may be the trademarks of their respective
owners. Rather than use a trademark symbol with every occurrence of a trademarked name, we are
using the names only in an editorial fashion and to the benefit of the trademark owner, with no
intention of infringement of the trademark.
The information in this book is distributed on an “As Is” basis, without warranty. While every
precaution has been taken in the preparation of this work, neither the author nor No Starch Press, Inc.
shall have any liability to any person or entity with respect to any loss or damage caused or alleged to
be caused directly or indirectly by the information contained in it.
To Caro
About the Author
Al Sweigart is a software developer, tech book author, and hoopy frood who
really knows where his towel is. He has written several programming books
for beginners, including Automate the Boring Stuff with Python and Scratch
Programming Playground, also from No Starch Press. His books are freely
available under a Creative Commons license at his website
https://inventwithpython.com/.
About the Technical Reviewer
Ari Lacenski is a developer of Android applications and Python software.
She lives in the Bay Area, where she writes about Android programming at
http://gradlewhy.ghost.io/ and mentors with Women Who Code.
BRIEF CONTENTS
Acknowledgments
Introduction
Chapter 1: The Interactive Shell
Chapter 2: Writing Programs
Chapter 3: Guess the Number
Chapter 4: A Joke-Telling Program
Chapter 5: Dragon Realm
Chapter 6: Using the Debugger
Chapter 7: Designing Hangman with Flowcharts
Chapter 8: Writing the Hangman Code
Chapter 9: Extending Hangman
Chapter 10: Tic-Tac-Toe
Chapter 11: The Bagels Deduction Game
Chapter 12: The Cartesian Coordinate System
Chapter 13: Sonar Treasure Hunt
Chapter 14: Caesar Cipher
Chapter 15: The Reversegam Game
Chapter 16: Reversegam AI Simulation
Chapter 17: Creating Graphics
Chapter 18: Animating Graphics
Chapter 19: Collision Detection
Chapter 20: Using Sounds and Images
Chapter 21: A Dodger Game with Sounds and Images
Index
CONTENTS IN DETAIL
ACKNOWLEDGMENTS
INTRODUCTION
Who Is This Book For?
About This Book
How to Use This Book
Line Numbers and Indentation
Long Code Lines
Downloading and Installing Python
Starting IDLE
Finding Help Online
1
THE INTERACTIVE SHELL
Some Simple Math
Integers and Floating-Point Numbers
Expressions
Evaluating Expressions
Syntax Errors
Storing Values in Variables
Summary
2
WRITING PROGRAMS
String Values
String Concatenation
Writing Programs in IDLE’s File Editor
Creating the Hello World Program
Saving Your Program