Book Image

Building your First Mobile Game using XNA 4.0

By : Brecht Kets, Thomas Goussaert
Book Image

Building your First Mobile Game using XNA 4.0

By: Brecht Kets, Thomas Goussaert

Overview of this book

With the dawn of the Windows Phone 7 platform, Microsoft has offered us an easy way to create 3D mobile games. In this book, we will build a 3D game for Windows Phone 7 together, taking full advantage of the graphics and touch capabilities, along with the sensors of the platform."Building your First Mobile Game using XNA 4.0" is the book for starting game development on the Windows Phone 7 platform. This book will go over the technical aspects of building games along with designing your own framework. Finally we'll build an actual game together from the ground up! This book will set future mobile game developers in the right direction.The XNA framework empowers us to build 2D and 3D games for PC, Xbox 360 and Windows Phone 7. We will use those capabilities to create stunning 3D games for the Windows Phone 7 platform. We will start by covering the basics like drawing graphics, followed by building a custom framework and end with building a game together!In this book, we will cover drawing 2D and 3D graphics, both static and animations. We will also cover the various ways of handling user input and help set the mood of our game playing both 2D and 3D sound, and accessing the user's media library. The only thing left before building a game is covering several techniques created for making our life easier while building the game, whilst building a framework to do just that. Finally, we'll build a 3D game together that will run on the Windows Phone 7 platform."Building your First Mobile Game using XNA 4.0" is the book you need to get started with mobile game development for Windows Phone 7. Its hands on approach will set you on your way in no time. Let's build some games!
Table of Contents (16 chapters)

Playing 3D sound


When playing sounds, for instance an explosion, it's nice that the sound of the explosion actually appears to be coming from the explosion. This can be done using 3D sound. The basic setup is very similar as using a SoundEffectInstance, because it has support for 3D sound. We just need some extra classes: an AudioEmitter and an AudioListener. The emitter represents the object that will cause the sound, for instance in case of an explosion, the bomb. The emitter will have the same position as the object that creates the sound. The listener represents the object that receives the sound. In case of a game, it would be the player, and thus have the same position. Both the emitter and the listener have a property called Forward; with the emitter, it defines the direction in which the sound should travel; with the listener, if defines the direction in which the listener is oriented. They both have properties for the position, the up vector and the velocity. The emitter also has...