Cocos2d-X by Example Beginner's Guide

Cocos2d-X by Example Beginner's Guide

By : Roger Engelbert

Buy this Book

Cocos2d-X by Example Beginner's Guide

By: Roger Engelbert

Buy this Book

Overview of this book

Cocos2d-x is the C++ port of arguably the most popular open source 2D framework in the world. Its predecessor was limited to the Apple family but with Cocos2d-x you can take your applications to all major app stores, with minimum extra work. Give your games a larger target audience with almost no extra hassle. "Cocos2d-X by Example Beginner's Guide" allows you to build your own cross platform games using all the benefits of a time tested framework, plus the elegance and simplicity of C++. Each of the six games developed in this book will take you further on the road to becoming an expert game developer with no fuss and plenty of fun. Follow six tutorials for six very different games that leverage the ease of Cocos2D-X and its quick implementation, moving from simple ideas to more advanced topics in game development. In easy-to-follow steps, the book teaches you how to take full advantage of the framework by adding animations and special effects, implementing a physics engine, and optimizing your games. Prepare your project for multiple platforms and learn how to take your game concepts to completion. "Cocos2d-X by Example Beginner's Guide" will present to you, in six different games, the topics necessary to build some of the most popular and fun types of games today.

Cocos2d-x by Example Beginner's Guide

Credits

About the Author

About the Reviewers

www.PacktPub.com

Preface

Free Chapter

Installation

Download and installation

Time for action – downloading and installing Cocos2d-x

Hello-x World-x

Time for action – creating an application

Further information

Time for action – running the test samples

The other tools

Summary

You plus C++ plus Cocos2d-x

Cocos2d-x – an introduction

The interface

Time for action – creating the interface

The implementation

Time for action – creating the implementation

Instantiation and memory management

What you get with CCObject

Summary

Your First Game – Air Hockey

Game configurations

Time for action – creating your game project

Time for action – laying down the rules

Supporting retina displays

Time for action – adding the image files

Time for action – adding retina support

Adding sound effects

Time for action – adding the sound files

Extending CCSprite

Time for action – adding GameSprite.cpp

Time for action – implementing GameSprite

The actual game scene

Time for action – coding the GameLayer interface

Time for action – implementing init()

Time for action — handling multi-touches

Time for action – adding our main loop

Time for action – updating scores

Summary

Fun with Sprites – Sky Defense

The game – Sky Defense

Using sprite sheets in Cocos2d-x

Time for action – creating a CCSpriteBatchNode

Bitmap fonts in Cocos2d-x

Time for action – creating bitmap font labels

Time for action – adding the final screen sprites

Time for action – creating our object pools

CCActions in a nutshell

Time for action – creating actions with Cocos2d-x

Animating a sprite in Cocos2d-x

Time for action – creating animations

Time to make our game tick!

Time for action – handling touches

Time for action – starting and restarting the game

Time for action – updating the game

Time for action – retrieving objects from the pool

Play the game!

Summary

On the Line – Rocket Through

The game – Rocket Through

So what are particles?

Time for action – creating particle systems

Creating the grid

Drawing primitives in Cocos2d-x

Time for action – let's do some drawing!

The Rocket sprite

Time for action – updating our Rocket

Time for Action – handling touches

The game loop

Time for action – adding the main loop

Kill and reset

Time for action – adding our resets and kills

Summary

Quick and Easy Sprite – Victorian Rush Hour

The game – Victorian Rush Hour

The game settings

Rapid prototyping with Cocos2d-x

Time for action – creating placeholder sprites

The Player object

The Block object

The Terrain object

Time for action – coding the player

Time for action – coding the Block object

Time for action – initialising our Terrain class

Time for action – initializing our Blocks

Time for action – moving and resetting

Platform collision logic

Time for action – adding collision detection

Adding the controls

Time for action – handling touches

Time for action – coding the main loop

Summary

Adding the Looks – Victorian Rush Hour

Victorian Rush Hour – the game

Texturing our buildings with CCSprites

Time for action – texturing the buildings

Containers within containers

Creating a parallax effect

Time for action – creating a parallax effect

Adding a menu to our game

Time for action – creating CCMenu and CCMenuItem

Adding a tutorial to our game

Time for action – adding a tutorial

Summary

Getting Physical – Box2D

Creating a Box2D project with Cocos2d-x

Time for action – preparing the basic template

So what is a physics engine?

Our game – MiniPool

Time for action – adding the touch events

Time for action – adding the main loop

Time for action – creating a timer

Summary

The Last Game – Eskimo

The game – Eskimo

Using CCScenes in Cocos2d-x

Time for action – creating a CCScene transition

Time for action – creating transitions with a singleton CCLayer

Loading external data from a .plist file

Time for action – creating a .plist file

Time for action – retrieving data from the .plist file

Saving game data

Time for action – storing the completed levels

Using notifications in your game

Time for action – using CCNotificationCenter

Using the accelerometer

Time for action – reading accelerometer data

Reusing b2Bodies

Time for action – changing a b2Body fixture

Summary

Code Once. Retire.

First, a word on versions and requirements

Time for action – creating an Android project with Cocos2d-x

Time for action – compiling the code

Using Eclipse

Time for action – installing the C++ compiler

Time for action – adding the Cocos2d-x library to Eclipse

Time for action – opening the project in Eclipse

Compiling C++ code in Eclipse

Time for action – compiling our C++ code

Creating a hybrid project

Time for action – creating a hybrid Cocos2d-x project

Creating a Box2D hybrid project

Time for action – creating a Box2D project

Developing a hybrid game

Summary

Vector Calculations with Cocos2d-x

What are vectors?

Using ccp helper methods

Pop Quiz Answers

Chapter 4, Fun with Sprites – Sky Defense

Chapter 8, Getting Physical – Box2D

Index

Customer Reviews

5 star

4 star

3 star

2 star

1 star

Time for action – coding the GameLayer interface

GameLayer is the main container in our game and is coded as follows:

Select your GameLayer.h, then replace the code here with:
```
#ifndef __GAMELAYER_H__
#define __GAMELAYER_H__

#define GOAL_WIDTH 400
```
We define the width of the goals in pixels.

Next add the declarations for our sprites and our score text labels:

#include "cocos2d.h"
#include "GameSprite.h"

using namespace cocos2d;

class GameLayer : public cocos2d::CCLayer
{
    GameSprite * _player1;
    GameSprite * _player2;
    GameSprite * _ball;
    
    CCArray * _players;
    CCLabelTTF * _player1ScoreLabel;
    CCLabelTTF * _player2ScoreLabel;

We have the GameSprite objects for two players (the weird looking things called mallets), and the ball (called puck). We'll store the two players in CCArray. And we have two text labels to display score for each player.

Declare a variable to store the screen size. We'll use this a lot for positioning:
```
CCSize _screenSize;
```
Add variables to store the score...

Cocos2d-X by Example Beginner's Guide

By : Roger Engelbert

Cocos2d-X by Example Beginner's Guide

By: Roger Engelbert

Overview of this book

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Cocos2d-X by Example Beginner's Guide

Time for action – coding the GameLayer interface