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

Time for action – creating a button component


As an exercise, let's try to use what you've learned so far to create a more complete and better working button component. The button is to have a rounded shape with a nice background and should hold definable text and an icon. The button should look good for different texts and icons.

Start by creating a new project in Qt Creator. Choose Qt Quick UI as the project type. When asked for the component set, choose the lowest available version of Qt Quick:

At this point, you should end up with a project containing two files–one with a QML project extension, which is your project management file, and the other with the QML extension, which is your main user interface file. You can see that both files contain QML definitions. That is because Qt Creator manages Qt Quick projects using QML itself (you'll notice it imports the QmlProject module).

The QML document that was created for us contains a "Hello World" example code, which we can use as a starting...