JSB incompatibilities with cocos2d-html5

Here is a short list of things we had to patch onto the Cocos2D implementation 
on the HTML5 side:

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The IOS/Android code inheritates BoardLayer from cc.Layer, which will crash 
under HTML5:
- Uncaught TypeError: Object [object Object] has no method 'setOpacity' 
(CCActionInterval.js:1505)

In the cpp version this will work due they have a dynamic cast check which 
prevents the crash (CCActionIntervval.cpp: 1781)
void CCFadeIn::update(float time)
{
    CCRGBAProtocol *pRGBAProtocol = dynamic_cast<CCRGBAProtocol*>(m_pTarget);
    if (pRGBAProtocol) { pRGBAProtocol->setOpacity((GLubyte)(255 * time)); }
}

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Missing functions in HTML5 can primary be found in our "Main.js"
https://github-ca.corp.zynga.com/stg-js/xwf/blob/master/Web/source/class/Main.js

- cc.SpriteFrame does not provide a "retain(void)" function.
- BoardLayer does not provide a "setMouseEnabled(void)" function
- BoardLayer does not provide a "setTouchEnabled(void)" function
- cc.Director does not provide a "enableRetinaDisplay(boolean)" function
- cc.Application does not provide a "applicationDidFinishLaunching(void)" 
function even if it is called from the "cc.Application.run()" inside the 
cocos2d-html5 code
- there is no global "__getPlatform(void)" function
- there is no global "__associateObjWithNative(scope, parent)" function
- there is no global "log(msg)" function, in JS it's "console.log(msg)", which 
we have to patch onto the window object

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The CCTextureCache does return an native HTML5 image while it returns a 
CCTexture2D on cpp side.
There seems to be a CCTexture2D on HTML5 port but this one seems not to be 
implemented or used.
The native image does not have functions like image.getPixelWide(void) or 
texture.getPixelHigh(void)

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For a colored CCSprite with a attached texture the cpp uses the OpenGL fixed 
function pipeline which results in (alpha * texture color) + (1-alpha * sprite 
color).
On HTML5 the sprite color does not affect the final color.

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In HTML5 a Sprite cannot be created by cc.Sprite.create(void). It has to be a 
minimum of 1 parameter, the filename.
In cpp there is a function which will return a initialized and empty sprite for 
such a call.

And this one:
As mentioned this morning, there’s currently a incompatibility between the 
JSBindings and Cocos2d-HTML.

On the Node class, HTML exports a method getBoundingBox, while the JSBindings 
have boundingBox.
Original issue reported on code.google.com by ricardoq...@gmail.com on 1 Oct 2012 at 8:42
DNESS / cocos2d-iphone

JSB incompatibilities with cocos2d-html5 #1428
