Book Image

Cocos2d for iPhone 0.99 Beginner's Guide

By : Pablo Ruiz
Book Image

Cocos2d for iPhone 0.99 Beginner's Guide

By: Pablo Ruiz

Overview of this book

<p>Cocos2d for iPhone is a robust but simple-to-use 2D game framework for iPhone. If you are just starting with game programming, cocos2d will enable you to make your first game in no time. Even if you are a seasoned game developer, you will still be able to benefit from what it offers. Yet beginning with cocos2d for iPhone may be an arduous task without a proper guide.</p> <p><i>Cocos2d for iPhone 0.99 Beginner</i>&rsquo;s Guide will help you to learn how to make games with cocos2d from the ground up. You will learn all the key concepts of the framework and game programming in general while building your first game using this exciting platform.</p> <p>You will start by learning the basics of cocos2d then you will learn how to enhance your game with a lot of cool features and eye candy. After spending a little time learning the basics, you will jump straight into action. The book will then teach you to build games from scratch and how to add animations, sounds, and particle effects to them. Then you will be guided to have your game behave as in real life by using a physics engine. After reading <i>Cocos2d for iPhone 0.99 Beginner's Guide</i>, you will be able to write your own games for iPhone while using all the elements Pros use. There are a lot of examples, images, and diagrams to get you up to speed in no time.</p>

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Cocos2d for iPhone 0.99 Beginner's Guide
Pablo Ruiz
Dec, 2010 | 368 pages
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Table of Contents (18 chapters)
Cocos2d for iPhone 0.99 Beginner's Guide
Cocos2d for iPhone 0.99 Beginner's Guide
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
Preface
Preface
Free Chapter
1
Getting Started with Cocos2d
Getting Started with Cocos2d
Downloading Cocos2d for iPhone
Time for action – opening the samples project
Installing the templates
Time for action – installing the templates
Creating a new project from the templates
Time for action – creating a HelloCocos2d project
Managing the game with the CCDirector
Time for action – taking a first look at the HelloCocos2dAppDelegate
Doing everything with CCNodes
Time for action – peeking at the HelloWorldScene class
Checking your timing
Time for action – using timers to make units shoot each second
Time for action – destroying your units
Debugging cocos2d applications
Time for action – checking Cocos2d debug messages
Time for action – checking deallocing messages
Time for action – knowing your errors
Time for action – removing debug messages
Summary
2
Playing with Sprites
Playing with Sprites
Making a puzzle game
Beginning a new project
Time for action – creating a new project
Displaying images with CCSprites
Time for action – adding a background image to the game
Time for action – creating the Stone class
Creating the game board
Time for action – placing stones in the grid
Interacting with sprites
Time for action – registering the stones for receiving touches
Time for action – handling touches for swapping stones
Time for action – swapping the stones around
Time for action – checking for matches
Making them fall!
Time for action – refilling the grid
Playing with CCSprite's properties
Time for action – making a time bar
Changing a sprite's texture at runtime
Time for action – changing textures on the fly
Using Spritesheets
Time for action – creating sprites from Spritesheets
Creating Spritesheets with zwoptex
Time for action – creating more colored stones with Spritesheets
Preloading images
Time for action – preloading your images
Making OpenGl Calls
Time for action – selecting a stone for swapping
Summary
3
Let's Do Some Actions
Let's Do Some Actions
Basic actions
Time for action – animating the stone falling
Time for action – destroying stones with actions
Time for action – tinting the time bar
Composition actions
Time for action – making a nice disappear effect
Time for action – making stones fall and grow
Time for action – animating the grid
Ease actions
Time for action – modifying animations with ease actions
Effect actions
Time for action – making the background shake when matching five stones
Special actions
Time for action – ready, set, go!
Time for action – telling the player he lost
Animations
Time for action – animating the stones
Summary
4
Pasting Labels
Pasting Labels
Using CCLabels
Time for action – first time tutorials
Displaying texts with CCLabelAtlas
Time for action – displaying and updating scores with CCLabelAtlas
Creating texts with CCBitmapFontAtlas
Time for action – showing feedback
Time for action – running actions on texts
Making your own BitmapFontAtlas with BM Font tool
Time for action – creating your own Bitmap font
Wrapping up the game
Summary
5
Surfing through Scenes
Surfing through Scenes
Aerial Gun, a vertical shooter game
Creating new scenes
Time for action – creating the splash and main menu scene
Transitioning through scenes
Time for action – moving through scenes in a nice way
Implementing the game logic
Time for action – creating the hero class
Time for action – throwing enemies at your hero
Time for action – creating and reusing bullets
Handling accelerometer input
Time for action – moving your hero with the accelerometer
Handling touches on layers
Time for action – firing the bullets
Detecting collisions
Time for action – shooting down your enemies
Time for action – losing your life
Adding more layers to scenes
Time for action – creating a HUD to display lives and the score
Time for action – creating a pause menu
Time for action – pausing the game while inactive
Summary
6
Menu Design
Menu Design
Creating a simple menu
Time for action – adding a menu with texts to the main scene
Using image menu items
Time for action – adding a difficulty selection screen
Animating menu items
Time for action – animating the main menu
Using toggle menu items
Time for action – creating the options menu
Saving and loading preferences
Time for action – persisting options data
Summary
7
Implementing Particle Systems
Implementing Particle Systems
Taking a look at the prebuilt particle systems
Time for action – running the particle test
Time for action – analyzing the ParticleMeteor system
Implementing particle systems in your game using Gravity mode
Time for action – making bombs explode
Using the radius mode
Time for action – hurting your enemies
Using Particle Designer to create particle systems
Time for action – creating a smoke trail
Summary
8
Familiarizing Yourself with Tilemaps
Familiarizing Yourself with Tilemaps
Using tilemaps
Creating tilemaps with Tiled
Time for action – creating your first map
Loading tilemaps in Cocos2d
Time for action – using tilemaps in Cocos2d
Time for action – running actions on layers
Time for action – reaching the end of the level
Time for action – fixing black gaps and glitches
Using layers to hold objects
Time for action – adding object layers in tiled
Time for action – retrieving objects in Cocos2d
Summary
9
Playing Sounds with CocosDenshion
Playing Sounds with CocosDenshion
What is CocosDenshion?
Getting started with sounds
Time for action – using SimpleAudioEngine
Time for action – playing background music with SimpleAudioEngine
Using CDSoundEngine
Time for action – setting it up
Time for action – playing sound effects for explosions
Time for action – loading effects asynchronously with CDSoundEngine
Time for action – playing background music with CDAudioManager
Summary
10
Using Physics Engines
Using Physics Engines
A word about physics engines
Totem balance, a physical game
Time for action –taking a look at the Chipmunk template
Preparing the game
Bringing objects to life
Time for action – creating a poly-shaped object
Time for action – creating the goal platform
Time for action – building blocks
Time for action – destroying shapes with touch
Collision callbacks
Time for action –losing the game
Time for action –winning the game
Placing static shapes
Summary
11
Integrating OpenFeint
Integrating OpenFeint
Signing up and downloading the SDK
Time for action – signing up and downloading the SDK
Integrating OpenFeint into your game
Time for action – making OpenFeint work
Time for action – displaying the OpenFeint dashboard
Adding leaderboards to your game
Time for action – creating a leaderboard
Adding achievements to your game
Time for action – creating an achievement
Submitting your game for OpenFeint approval
Summary
Pop Quiz Answers
Pop Quiz Answers
Chapter 2:
Chapter 3:
Chapter 4:
Chapter 5:
Chapter 6:
Chapter 7:
Chapter 8:
Chapter 9:
Chapter 10:
Chapter 11:
Index
Index

Time for action – removing debug messages

Sometimes you will need to get a better look at your own debug messages or you will notice your application is running very slowly for no apparent reason. This could be caused by all the debug messages being written to the console. So, let's take a look at how to disable them:

  1. Go to Project | Edit active target.

  2. Search for gcc_preprocessor_defination, and you will find the flag COCOS2D_DEBUG set to 1.

  3. Change it to 0 to disable it.

  4. Rebuild your project.

  5. Cocos2d debug messages will now disappear.

    Note

    Alternatively, you can have your project run in release configuration. To do that, select it from the overview dropdown under Active Configuration.

What just happened?

As debug messages are written to the console, many times when you have a lot of things going around in your game it will start running slowly. In such cases, you may want to prevent Cocos2d from logging all that useful data. If you follow the preceding steps you will be able to switch the debug logging on and off at will.

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