Book Image

Cocos2d for iPhone 1 Game Development Cookbook

By : Nathan Burba
Book Image

Cocos2d for iPhone 1 Game Development Cookbook

By: Nathan Burba

Overview of this book

Cocos2d for iPhone is a robust but simple-to-use 2D game framework for iPhone. It is easy to use, fast, flexible, free, and Appstore approved. More than 2500 AppStore games already use it, including many best-seller games. Do you want to take your cocos2d game development skills to the next level and become more professional in cocos2d game design? Cocos2d for iPhone 1 Game Development Cookbook will help you reach that next level. You will find over 100 recipes here that explain everything from the drawing of a single sprite to AI pathfinding and advanced networking. Full working examples are emphasized. Starting with the first chapter, Graphics, you will be taken through every major topic of game development. You will find both simple and complex recipes in the book. Each recipe is either a solution to a common problem (playing video files, accelerometer steering) or a cool advanced technique (3D rendering, textured polygons). This cookbook will have you creating professional quality iOS games quickly with its breadth of working example code.
Table of Contents (15 chapters)
Cocos2d for iPhone 1 Game Development Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Saving data using Core Data


Our third game is a memory card game where you must flip over sets of cards. Flip over two matching cards and you get a point. Flip over two that don't match and you get a strike. Three strikes and you're out. For this game we persist hi-score data using Apple's Core Data model pattern.

Getting ready

Please refer to the project RecipeCollection01 for full working code of this recipe. For the sake of brevity all game logic has been omitted from the following code.

How to do it...

Setting up our Core Data based recipe requires a number of steps.

First we need to add the CoreData framework. You can do this by right clicking on your project and going to Add > Existing Frameworks and then, under iOS 4.x SDK, select CoreData.framework.

  1. Create a new folder inside your resources entitled Data Model. Inside this folder, create a class entitled Hiscore, which derives from ManagedObject:

    //Hiscore.h
    #import <CoreData/CoreData.h>
    
    @interface Hiscore :  NSManagedObject ...