Cocos2d for iPhone 1 Game Development Cookbook

Cocos2d for iPhone 1 Game Development Cookbook

By : Nathan Burba

Buy this Book

Cocos2d for iPhone 1 Game Development Cookbook

By: Nathan Burba

Buy this Book

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.

Cocos2d for iPhone 1 Game Development Cookbook

Credits

About the Author

About the Reviewers

www.PacktPub.com

Preface

Free Chapter

Graphics

Drawing OpenGL primitives

Playing video files

Grid, particle, and motion streak effects

Using Retina Display mode

1D and 2D Ease Actions

Rendering and texturing 3D shapes

Rendering a texture-filled polygon

Animating a texture-filled polygon

Swapping palettes using layers

Swapping palettes using CCTexture2DMutable

Using AWTextureFilter for blur and font shadows

Taking and using screenshots

Using CCParallaxNode

Lighting using glColorMask

User Input

Introduction

Tap, hold, and drag input

Depth testing input

Creating buttons

Creating a directional pad

Creating an analog stick

Using the accelerometer for steering

Using the accelerometer for 3D rotation

Pinch zooming

Performing gestures

Files and Data

Introduction

Reading PLIST data files

Reading JSON data files

Reading XML data files

Saving simple data using NSUserDefaults

Archiving objects into archive files

Mutating nested metadata

Saving data into a PLIST file

Saving data into an SQLite database

Saving data using Core Data

Physics

Introduction

Box2D setup and debug drawing

Creating collision response routines

Using different shapes

Dragging and collision filtering

Manipulating physical properties

Applying impulses

Applying forces

Asynchronous body destruction

Simulating and rendering a rope

Creating a top-down isometric game engine

Scenes and Menus

Introduction

Switching scenes

Transitioning between scenes

Using CCLayerMultiplex

Using CCLabel

Using CCMenu

Creating shadowed menu labels

UIKit alert dialogs

Wrapping UIKit

Creating draggable menu windows

Creating a horizontal scrollable menu

Creating a vertical sliding menu grid

Creating a loading screen with an indicator

Creating a minimap

Audio

Introduction

Playing sounds and music

Modifying audio properties

Fading sounds and music

Using audio in a game

Using positional audio in a game

Metering background music

Metering dialogue for animation

Streaming audio

Recording audio

Using the iPod music library

Creating a MIDI synthesizer

Speech recognition and text-to-speech

AI and Logic

Introduction

Processing AI waypoints

Firing projectiles at moving targets

AI line of sight

AI flocking using Boids

A* pathfinding on a grid

A* pathfinding in a Box2D world

A* pathfinding on a TMX tilemap

A* pathfinding in a side-scroller

Running a Lua script

Dynamically loading Lua scripts

Using Lua for dialogue trees

Tips, Tools, and Ports

Introduction

Accessing the Cocos2d-iPhone testbed

Packing textures using Zwoptex

Creating levels using Tiled

Creating levels using JSONWorldBuilder

Creating scenes with CocosBuilder

Using Cocos2d-X

Using Cocos3d

Releasing your app

Index

Customer Reviews

5 star

4 star

3 star

2 star

1 star

AI flocking using Boids

By placing many more enemies in a game we begin to require some group-based AI. A popular algorithm used in both video games and films is the Boids algorithm. It simulates flocking behavior. In this recipe, we will create a large number of enemies who flock together and chase the player.

Getting ready

Please refer to the project RecipeCollection03 for full working code of this recipe.

How to do it...

Execute the following code:

@interface Ch7_AIFlocking : Ch7_LineOfSight {}

/* CODE OMITTED */

@end

@implementation Ch7_AIFlocking

-(void) step:(ccTime)delta {
  [super step:delta];

  //Process the 'boids' flocking algorithm
  [self processBoids];
}

/* Make the flock of 'boids' follow the actor */
-(void) followActorWithEnemies {
  //All enemies constantly follow the actor
  for(int i=0; i<enemies.count; i++){
    //Align enemies
    GameActor *enemy = [enemies objectAtIndex:i];
    CGPoint directionVector = CGPointMake(actor.body->GetPosition().x - enemy.body-...

Cocos2d for iPhone 1 Game Development Cookbook

By : Nathan Burba

Cocos2d for iPhone 1 Game Development Cookbook

By: Nathan Burba

Overview of this book

Related Content you might be interested in

Current Title:

Cocos2d for iPhone 1 Game Development Cookbook

AI flocking using Boids

Getting ready

How to do it...