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 – understanding the ChessView class


This is a chapter about doing graphics, so it is high time to focus on displaying our chess game. Our widget currently displays nothing, and our first task is going to be to show a chess board with rank and column symbols and fields colored appropriately.

By default, the widget does not have any proper size defined and we will have to fix that by implementing sizeHint(). However, to be able to calculate the size, we have to decide how big a single field on the board is going to be. Therefore, in ChessView, you should declare a property containing the size of the field, as shown:

Q_PROPERTY(QSize fieldSize 
           READ fieldSize WRITE setFieldSize 
           NOTIFY fieldSizeChanged)

To speed up coding, you can position the cursor over the property declaration, hit the Alt + Enter combination, and choose the Generate missing Q_PROPERTY members fixup from the pop-up menu. Creator will provide minor implementations for the getter and setter...