Book Image

Windows Phone 7 XNA Cookbook

By : Zheng Yang
Book Image

Windows Phone 7 XNA Cookbook

By: Zheng Yang

Overview of this book

Developing games for Windows Phone 7, a new mobile platform, is your big chance to impact the world of mobile games. The XNA 4.0 for Windows Phone 7 integrates a lot of capabilities from software and hardware for you to create incredible games. The next generation of mobile games will be built by you. Windows Phone 7 XNA Cookbook is the best choice for you to make a game on Windows Phone 7. The book helps you to master the indispensable techniques to create your games using XNA 4.0. From the basics such as animating a 2D sprite and interacting with the customized graphical user interface to the more challenging such as 3D graphic rendering and collision detection. This comprehensive cookbook covers all the essential areas of XNA game development for Windows Phone 7, such as approaches to control the sensors, gestures and typical kinds of cameras. We also have recipes for sprite animation, texture rendering, and graphical user interface development that will give you a powerful tool to work with 2D effects. After this we move onto the more juicy stuff with recipes covering 3D graphic rendering and collision detection, and major ways to improve your loading efficiency. You will also work with Xbox live so you can take your game global. Finally, no mobile game development book would be complete without a look at performance optimization to make your games run faster. Windows Phone 7 XNA Cookbook will equip you with the firepower to rock the game world.
Table of Contents (17 chapters)
Windows Phone 7 XNA Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface

Dragging and swiping objects


For Windows Phone 7, XNA 4.0 provides two main ways to get touchscreen input. Basically, one is based on tap. With the TouchPanel.GetState()method, you can look up the particular finger by the ID for the raw access to touch point. The Gesture System is another advanced input approach, which provides a number of pre-defined touch gestures, so that you don't have to work out how to read the common touch gestures using raw data. The TouchPanel.ReadGesture() method offers you a chance to interact with the touch screen in another way. In this recipe, you will get close to two of the most exciting gestures of touchscreen: dragging and swiping.

Getting ready

For Windows Phone XNA programming, the TouchPanel class has an important subclass GestureSample and a corresponding method ReadGesture(). Based on GestureType enum to interact with your gestures, Windows Phone 7 supports the following:

  • Tap: You touch the screen and move away one time, a single point.

  • DoubleTap...