Book Image

OpenGL Game Development By Example

By : Stephen Madsen, Robert Madsen
Book Image

OpenGL Game Development By Example

By: Stephen Madsen, Robert Madsen

Overview of this book

OpenGL is one of the most popular rendering SDKs used to develop games. OpenGL has been used to create everything from 3D masterpieces running on desktop computers to 2D puzzles running on mobile devices. You will learn to apply both 2D and 3D technologies to bring your game idea to life. There is a lot more to making a game than just drawing pictures and that is where this book is unique! It provides a complete tutorial on designing and coding games from the setup of the development environment to final credits screen, through the creation of a 2D and 3D game. The book starts off by showing you how to set up a development environment using Visual Studio, and create a code framework for your game. It then walks you through creation of two games–a 2D platform game called Roboracer 2D and a 3D first-person space shooter game–using OpenGL to render both 2D and 3D graphics using a 2D coordinate system. You'll create sprite classes, render sprites and animation, and navigate and control the characters. You will also learn how to implement input, use audio, and code basic collision and physics systems. From setting up the development environment to creating the final credits screen, the book will take you through the complete journey of creating a game engine that you can extend to create your own games.
Table of Contents (19 chapters)
OpenGL Game Development By Example
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 4. Control Freak

Most games are designed to be interactive. This means that the player must have some way to control what happens during the game. In the last chapter, you wrote code that displayed the robot and moved him across the screen. Now, you will control the robot!

This chapter will explain how to implement an input system to control the game's character, and interact with the game. Topics will include:

  • Types of input: There are many ways to interact with your game. Typically, games written for the PC depended on the mouse and keyboard. Direct touch input has now become the standard for mobile and tablet devices, and soon every PC will also have a touch-enabled display. We will cover the most common methods to receive input in your game.

  • Using the mouse and keyboard: In this section, you will write code to receive input from the mouse and keyboard to control both the game and our friendly robot.

  • Creating the user interface: In addition to controlling our robot, we also need...