Book Image

Mastering Qt 5 - Second Edition

By : Guillaume Lazar, Robin Penea
Book Image

Mastering Qt 5 - Second Edition

By: Guillaume Lazar, Robin Penea

Overview of this book

Qt 5.11 is an app development framework that provides a great user experience and develops full capability applications with Qt Widgets, QML, and even Qt 3D. Whether you're building GUI prototypes or fully-fledged cross-platform GUI applications with a native look and feel, Mastering Qt 5 is your fastest, easiest, and most powerful solution. This book addresses various challenges and teaches you to successfully develop cross-platform applications using the Qt framework, with the help of well-organized projects. Working through this book, you will gain a better understanding of the Qt framework, as well as the tools required to resolve serious issues, such as linking, debugging, and multithreading. You'll start off your journey by discovering the new Qt 5.11 features, soon followed by exploring different platforms and learning to tame them. In addition to this, you'll interact with a gamepad using Qt Gamepad. Each chapter is a logical step for you to complete in order to master Qt. By the end of this book, you'll have created an application that has been tested and is ready to be shipped.
Table of Contents (16 chapters)

Assembling your Qt3D entities

We will now proceed to create the building blocks of the game, each in the form of an Entity element:

  • Wall: This represents the limit of where the snake can go
  • SnakePart: This represents a part of the snake's body
  • Apple: This represents the apple (no way!) spawned at a random location
  • Background: This represents a good-looking background behind the snake and the apple

Each entity will be placed on a grid handled by the engine and will have a type identifier to make it easier to find. To factorize these properties, let's create a parent QML file named GameEntity.qml:

import Qt3D.Core 2.0 
Entity { 
    property int type: 0 
    property vector2d gridPosition: Qt.vector2d(0, 0) 

This Entity element only defines a type property and a gridPosition property, which will be used by the engine to lay out the content on the grid.

The first...