Book Image

Game Programming Using Qt: Beginner's Guide

By : Lorenz Haas, Witold Wysota, Witold Wysota, Lorenz Haas
Book Image

Game Programming Using Qt: Beginner's Guide

By: Lorenz Haas, Witold Wysota, Witold Wysota, Lorenz Haas

Overview of this book

Qt is the leading cross-platform toolkit for all significant desktop, mobile, and embedded platforms and is becoming more popular by the day, especially on mobile and embedded devices. Despite its simplicity, it's a powerful tool that perfectly fits game developers’ needs. Using Qt and Qt Quick, it is easy to build fun games or shiny user interfaces. You only need to create your game once and deploy it on all major platforms like iOS, Android, and WinRT without changing a single source file. The book begins with a brief introduction to creating an application and preparing a working environment for both desktop and mobile platforms. It then dives deeper into the basics of creating graphical interfaces and Qt core concepts of data processing and display before you try creating a game. As you progress through the chapters, you’ll learn to enrich your games by implementing network connectivity and employing scripting. We then delve into Qt Quick, OpenGL, and various other tools to add game logic, design animation, add game physics, and build astonishing UI for the games. Towards the final chapters, you’ll learn to exploit mobile device features such as accelerators and sensors to build engaging user experiences. If you are planning to learn about Qt and its associated toolsets to build apps and games, this book is a must have.
Table of Contents (18 chapters)
Game Programming Using Qt
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Text handling


Applications with a graphical user interface (and games surely fall into this category) are able to interact with users by displaying text and by expecting textual input from the user. We have already scratched the surface of this topic in the previous chapter by using the QString class. Now, we will go into more details.

Manipulating strings

Text in Qt is internally encoded using Unicode, which allows to represent characters in almost all languages spoken in the world and is de facto standard for native encoding of text in most modern operating systems. You have to be aware though that contrary to the QString class, the C++ language does not use Unicode by default. Thus, each string literal (that is, each bare text you wrap in quotation marks) that you enter in your code needs to be converted to Unicode first before it can be stored in any of Qt's string handling classes. By default, this is done implicitly assuming that the string literal is UTF-8 encoded, but QString provides...