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 simple data using NSUserDefaults


For the persistence of user settings and other small bits of data, the iOS framework provides the NSUserDefaults class. In this example, we are saving the default difficulty level for our game.

Getting ready

Please refer to the project RecipeCollection01 for full working code of this recipe.

How to do it...

Execute the following code:

@implementation Ch2_SavingSimpleData

-(CCLayer*) runRecipe {
  //Set font size
  [CCMenuItemFont setFontSize:30];

  //Add main label
  CCLabelBMFont *chooseDifficultyLabel = [CCLabelBMFont labelWithString:@"CHOOSE DIFFICULTY:" fntFile:@"eurostile_30.fnt"];
  chooseDifficultyLabel.position = ccp(240,250);
  chooseDifficultyLabel.scale = 0.5f;
  [self addChild:chooseDifficultyLabel z:1];

  //Add difficulty choices
  easyMIF = [CCMenuItemFont itemFromString:@"Easy" target:self selector:@selector(chooseEasy)];
  /* CODE OMITTED */

  mainMenu = [CCMenu menuWithItems:easyMIF, mediumMIF, hardMIF, insaneMIF, nil];
  [mainMenu...