Now that Apple has introduced the GameKit framework to its iOS SDK, you can integrate Game Center features directly into your iPhone and iPad apps. This concise cookbook shows you how it's done, with 18 targeted recipes for adding leaderboards, user authentication, achievements, multiplayer games, and many other features.

How do you display players' scores and achievements? How do you create Game Center accounts and add friends? Each recipe in this book includes a simple code solution you can put to work immediately, along with a detailed discussion that offers insight into why and how the recipe works.

Recipes include techniques to:

Set up Game Center for an iOS App
Use block objects and Grand Central Dispatch to write Game Center apps
Authenticate a local player in Game Center
Use iTunes Connect to create leaderboards and achievements
Retrieve leaderboard and achievement information programmatically
Handle players' state changes in multiplayer games

�ber die Autorin bzw. den Autor

Vandad Nahavandipoor has developed software using Cocoa, Cocoa Touch, Assembly, Delphi, and .NET for many years. As a staff member of a company that is a global leader in mobile money solutions in London, he has worked with some of the world's biggest brands--such as Visa and US Bank---to deliver mobile applications to their customers. Vandad brings an interest in management, leadership and entrepreneurship to his work, believing in the synergy that is achieved as a result of cooperation and working together in a team.

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