Cocos2d-x by Example: Beginner's Guide

Book Image

Cocos2d-x by Example: Beginner's Guide

By : Roger Engelbert

Book Image

Cocos2d-x by Example: Beginner's Guide

By: Roger Engelbert

Overview of this book

Cocos2d-x by Example Beginner's Guide Second Edition

Cocos2d-x by Example Beginner's Guide Second Edition

Credits

About the Author

About the Author

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Free Chapter

Installing Cocos2d-x

Installing Cocos2d-x

Downloading and installing Cocos2d-x

Time for action – downloading, downloading, downloading

Time for action – installing Cocos2d-x

Hello-x World-x

Time for action – creating an application

Time for action – deploying to Android

Finding more reference material

Time for action – running the test samples

The other tools

You Plus C++ Plus Cocos2d-x

You Plus C++ Plus Cocos2d-x

Cocos2d-x – an introduction

The class interface

Time for action – creating the interface

The class implementation

Time for action – creating the implementation

Instantiating objects and managing memory

What you get with Ref

Your First Game – Air Hockey

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 Sprite

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 multitouches

Time for action – adding our main loop

Time for action – updating scores

Time for action – running the game in Android

Fun with Sprites – Sky Defense

Fun with Sprites – Sky Defense

The game – sky defense

Using sprite sheets in Cocos2d-x

Time for action – creating SpriteBatchNode

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

Actions 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

Time for action – running the game in Android

On the Line – Rocket Through

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 sprite

Time for action – handling touches

Time for action – adding the main loop

Time for action – adding our resets and kills

Time for action – running the game in Android

Quick and Easy Sprite – Victorian Rush Hour

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 – initializing our Terrain class

Time for action – initializing our Blocks object

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

Adding the Looks – Victorian Rush Hour

Adding the Looks – Victorian Rush Hour

Victorian Rush Hour – the game

Texturing our buildings with sprites

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 Menu and MenuItem

Adding a tutorial to our game

Time for action – adding a tutorial

Time for action – running the game in Android

Getting Physical – Box2D

Getting Physical – Box2D

Building a Box2D project with Cocos2d-x

Time for action – using debug draw in your Box2D project

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

Time for action – running the game in Android

On the Level – Eskimo

On the Level – Eskimo

The game – Eskimo

Using scenes in Cocos2d-x

Time for action – creating a scene transition

Time for action – creating transitions with a singleton Layer class

Loading external data from a .plist file

Time for action – creating a .plist file

Loading the level data

Time for action – retrieving data from the .plist file

Saving game data

Time for action – storing the completed levels

Using events in your game

Time for action – using the event dispatcher

Using the accelerometer

Time for action – reading accelerometer data

Reusing b2Bodies

Time for action – changing a b2Body fixture

Time for action – running the game in Android

Introducing Lua!

Introducing Lua!

So what is Lua like?

The game – Stone Age

Time for action – creating or importing a project

Time for action – setting up our screen resolution

Time for action – creating a menu scene

Time for action – creating our game scene

Time for action – building the gems

Time for action – changing the grid with GridController

Time for action – swapping the gems and looking for matches

Time for action – collapsing the grid and repeating

Time for action – animating matches and collapses

Time for action – publishing the game with the Cocos IDE

Vector Calculations with Cocos2d-x

Vector Calculations with Cocos2d-x

What are vectors?

Using ccp helper methods

Pop Quiz Answers

Pop Quiz Answers

Chapter 4, Fun with Sprites – Sky Defense

Chapter 8, Getting Physical – Box2D

Index

Customer Reviews

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Time for action – coding the main loop

Finally, it's time for the last part in our logic.

Inside GameLayer.cpp:

void GameLayer::update(float dt) {

    if (!_running) return;


    if (_player->getPositionY() < -_player->getHeight() ||
        _player->getPositionX() < -_player->getWidth() * 0.5f)  {

            _running = false;

    }

If the _player object is off screen, we stop the game.

Now update all the elements, positions and check for collision:

_player->update(dt);

    _terrain->move(_player->getVector().x);

    if (_player->getState() != kPlayerDying) 
        _terrain->checkCollision(_player);

    _player->place();

Move _gameBatchNode in relation to the _player object:

if (_player->getNextPosition().y > _screenSize.height * 0.6f) {
        _gameBatchNode->setPositionY( (_screenSize.height *  0.6f - _player->getNextPosition().y) * 0.8f);

    } else {
        _gameBatchNode->setPositionY  ( 0 );
    }

Make the game more difficult as...