Cocos2d-x v2和v3对照手册

发布时间：2020-12-14 19:47:42 所属栏目：百科来源：网络整理

导读：转载于http://www.redtgames.com/blog/cocos2d-x-v2-to-v3-mapping-guide/ cocos2d-x v2 to v3 mapping guide So I started my next project and decided to use cocos2d-x v3. As soon as I started migrating my common classes,I realized that there are

转载于http://www.redtgames.com/blog/cocos2d-x-v2-to-v3-mapping-guide/

cocos2d-x v2 to v3 mapping guide

So I started my next project and decided to use cocos2d-x v3. As soon as I started migrating my common classes,I realized that there are significant changes not only to the naming convention but also usage of some of the classes such as “CCDictionary”,“CCArray”,“CCString” and many more. I will list the transition mapping from v2 to v3 below as I come across. Please feel free to leave a comment if I have missed out anything.

cocos2d-x v2 to v3 mapping

The list below maps the transition which has been made in cocos2d-x framework recently. This are minor changes to naming convensions and the underlying logic is the same.

In short the use ofCChas been removed.

#	v2	v3
1	CCAction	Action
2	CCPoint	Point
3	CCAnimation	Animation
4	CCSprite	Sprite
5	CCLabel	Label
6	CCMenu	Menu
7	CCObject	Ref
8	CCNode	Node
9	CCScene	Scene
10	CCLayer	Layer
11	CCSpriteBatchNode	SpriteBatchNode
12	CCTMXTiledMap	TMXTiledMap

cocos2d-x v2 to v3 mapping

The changes below are more significant since the underlying usage has been changed as well.

#	v2	v3
1	CCDictionary	ValueMap
2	CCArray	ValueVector
3	CCString	Value

CCString usage changes

Before

					
				CCString* str = CCString::createWithFormat("%s.png","picture");

After

					
				std::string str = StringUtils::format("%s.png","picture");

CCDictionary usage changes

Before

				

				
			CCDictionary* dict = CCDictionary::createWithContentsOfFile("name.plist");CCArray* arr = (CCArray*) data->objectForKey("Levels");

After

				

				

				

			std::string path = FileUtils::getInstance()->fullPathForFilename("name.plist");ValueMap dict = FileUtils::getInstance()->getValueMapFromFile(path);ValueVector arrLevels = data.at("Levels").asValueVector();

CCArray Usage changes

#	v2	v3
1	CCArray* sprites	Vector<Sprite *> sprites
2	sprites->addObject(sprite);	sprites.pushBack(sprite)
3	sprites->removeObject(sprite);	sprites.eraSEObject(sprite);
4	sprites->removeObjectAtIndex(i);	sprites.erase(i);
5	sprites->objectAtIndex(i);	sprites.at(i);
6	sprites->count();	sprites.size();

Below are additional comments provided byFradow

Touches Usage changes

#	v2	v3
1	ccTouchBegan	onTouchBegan
2	ccTouchMoved	onTouchMoved
3	ccTouchEnded	onTouchBegan

EGLView Usage changes

#	v2	v3
1	CCEGLView::sharedOpenGLView();	Director::sharedDirector()->getOpenGLView();

CCTime Usage changes

#	v2	v3
1	cc_timeval	timeval
2	CCTime::gettimeofdayCocos2d	gettimeofday
3	CCTime::timersubCocos2d	getTimeDifferenceMS

Sample

		

		

		
	static inline float getTimeDifferenceMS(timeval& start,timeval& end){return ((((end.tv_sec - start.tv_sec)*1000.0f + end.tv_usec) - start.tv_usec) / 1000.0f);}

Labels Usage changes

#	v2	v3
1	CCLabelTTF	Label

I will keep updating this article as I come across any changes which are not obvious. Please help me in doing so by providing some feedback and anything I have missed. Thanks for reading.

（编辑：李大同）

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