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胡坤 Google Chrome/HTML5 开发技术推广经理 林顺 Cocos2d-html5 核心开发者

Cocos2d-x & HTML5

1

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HTML5游戏引擎 之 资源加载

2

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Cocos2d-HTML5的设计思想

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HTML5游戏引擎 之 性能

•  Update & Draw

•  > 60帧 = Kill Browser

•  Inner Timer à Fixed Tick

•  Canvas in Canvas

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Cocos2d-HTML5 内部时钟

内部时钟的实现，保证固定的步长

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t0 tt1 t2

S =S0+ t *v;

Loop1 Loop2 Loop3 Loop n

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HTML5游戏引擎 之 兼容性

6

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Cocos2d-HTML5的设计思想

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Cocos2d-HTML5的设计思想

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林顺 Sean Lin Cocos2d-html5 核心开发者 Cocos2d-x核心开发者!

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Cocos2d-html5简介

•  原生Javascript

•  兼容cocos2d-x API

•  兼容JS binding API

•  MIT license!

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Cocos2d-HTML5框架

Cocos2DGraphic

Canvas WebGL

CocosDenshionAudio

Box2dPhysics

Games

PC

Chrome Safari FireFox ......

Mobile Phone

Chrome Safari ...... ......

Menu

DOM

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引擎支持的图层结构

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游戏的发布

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COCOS2D&HTML5

CANVAS

HTML5&GAMES

For$HTML5,$Canvas$and$WebGL

cocos2d&html5

Same%API,%Quick%Publish

cocos2d&js(binding

cocos2d&x(game(resources

Easy%Por)ng,%Low%cost

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跨平台性能

iOS

cocos2d-iphone

cocos2d-x

cocos2d-android

Android WP BrowserWindows Ubuntu

2dx lua binding

OS X

cocos2d-html5

cocos2d-xna

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Write once, run anywhere

Games&Wri*en&in&JS

JS&Binding cocos2d4?

JS&API

SAME&JS&API

cocos2d4html5

CANVAS

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JavaScript������

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Cocos2d-HTML5特性

•  -x，-iphone开发者的无缝过渡

•  cocos or cc 名字空间

•  使用、安装简单

16

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HelloWorld C++和JS代码对比

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代码对比

//C++

// add "HelloWorld" splash screen"

CCSprite* pSprite = CCSprite::spriteWithFile("HelloWorld.png");

pSprite->setPosition( ccp(size.width/2, size.height/2) );

//JS

// add "HelloWorld" splash screen”

var pSprite = cc.Sprite.spriteWithFile(“HelloWorld.png");

pSprite.setPosition( cc.ccp(size.width/2, size.height/2) );

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俄罗斯方块Demo

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Layer的继承和鼠标消息的处理

20

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游戏的移植和开发

C++ API：

CCDirector

CCDirector::sharedDirector();

CCDirector::sharedDirector()->getWinSize();

CCScene

CCLayer

CCSprite

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JS API：

cc.Director

cc.Director.sharedDirector();

cc.Director.sharedDirector() .getWinSize();

cc.Scene

cc.Layer

cc.Sprite

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RoadMap

Alpha Beta

DOMMenu

ChromeGame

Canvas WebGLJS binding

Other Browsers

Mobile Browsers

2012

22

Google Confidential and Proprietary 23