【1】Cocos2dx 3.0 与2.0的不同

1、以CC开头的类从此去掉CC，如：

| v2.1       | v3.0     |
| CCSprite   | Sprite   |
| CCNode     | Node     |
| CCDirector | Director |
| etc...                |

举个例子，创建一个精灵的方式：

v2.0 
CCSprite* sp = CCSprite::create();


v3.0
auto sp = Sprite::create();

2、clone() 替代 copy()

3、Director的单例换成getInstance() 和 destroyInstance();

| v2.1                          | v3.0                        |
| CCDirector->sharedDirector()  | Director->getInstance()     |
| CCDirector->endDirector()     | Director->destroyInstance() |
| etc...                                                      |

4、新的触摸机制，先贴一段代码给大家看看，可能是下一篇或者下下篇我会详细讲下新的触摸机制的。

auto sprite = Sprite::create("file.png");
...
auto listener = EventListenerTouchOneByOne::create();
listener->setSwallowTouch(true);
listener->onTouchBegan     = [](Touch* touch,Event* event) { do_some_thing();  return true;  };
listener->onTouchMoved     = [](Touch* touch,Event* event) { do_some_thing();  };
listener->onTouchEnded     = [](Touch* touch,Event* event) { do_some_thing();  };
listener->onTouchCancelled = [](Touch* touch,Event* event) { do_some_thing();  };
// The priority of the touch listener is based on the draw order of sprite
EventDispatcher::getInstance()->addEventListenerWithSceneGraphPriority(listener,sprite);
// Or the priority of the touch listener is a fixed value
EventDispatcher::getInstance()->addEventListenerWithFixedPriority(listener,100); // 100 is a fixed value

| v2.1 struct names | v3.0 struct names |
| ccColor3B         | Color3B |
| ccColor4B         | Color4B |
| ccColor4F         | Color4F |
| ccVertex2F        | Vertex2F |
| ccVertex3F        | Vertex3F |
| ccTex2F           | Tex2F |
| ccPointSprite     | PointSprite |
| ccQuad2           | Quad2 |
| ccQuad3           | Quad3 |
| ccV2F_C4B_T2F     | V2F_C4B_T2F |
| ccV2F_C4F_T2F     | V2F_C4F_T2F |
| ccV3F_C4B_T2F     | V3F_C4B_T2F |
| ccV2F_C4B_T2F_Triangle | V2F_C4B_T2F_Triangle |
| ccV2F_C4B_T2F_Quad | V2F_C4B_T2F_Quad |
| ccV3F_C4B_T2F_Quad | V3F_C4B_T2F_Quad |
| ccV2F_C4F_T2F_Quad | V2F_C4F_T2F_Quad |
| ccBlendFunc       | BlendFunc |
| ccT2F_Quad        | T2F_Quad |
| ccAnimationFrameData | AnimationFrameData |

一些全局的定义：

// in v2.1
ccColor3B color3B = ccc3(0,0);
ccc3BEqual(color3B,ccc3(1,1,1));
ccColor4B color4B = ccc4(0,0);
ccColor4F color4F = ccc4f(0,0);
color4F = ccc4FFromccc3B(color3B);
color4F = ccc4FFromccc4B(color4B);
ccc4FEqual(color4F,ccc4F(1,1));
color4B = ccc4BFromccc4F(color4F);

color3B = ccWHITE;

// in v3.0
Color3B color3B = Color3B(0,0);
color3B.equals(Color3B(1,1));
Color4B color4B = Color4B(0,0);
Color4F color4F = Color4F(0,0);
color4F = Color4F(color3B);
color4F = Color4F(color4B);
color4F.equals(Color4F(1,1));
color4B = Color4B(color4F);

color3B = Color3B::WHITE;

| v2.1 names    | v3.0 names |
| ccp           | Point |
| ccpNeg        | Point::- |
| ccpAdd        | Point::+ |
| ccpSub        | Point::- |
| ccpMult       | Point::* |
| ccpMidpoint   | Point::getMidpoint |
| ccpDot        | Point::dot |
| ccpCrosss     | Point::cross |
| ccpPerp       | Point::getPerp |
| ccpRPerp      | Point::getRPerp |
| ccpProject    | Point::project |
| ccpRotate     | Point::rotate |
| ccpUnrotate   | Point::unrotate |
| ccpLengthSQ   | Point::getLengthSq() |
| ccpDistanceSQ | Point::getDistanceSq |
| ccpLength     | Point::getLength |
| ccpDistance   | Point::getDistance |
| ccpNormalize  | Point::normalize |
| ccpForAngle   | Point::forAngle |
| ccpToAngle    | Point::getAngle |
| ccpClamp      | Point::getClampPoint |
| ccpFromSize   | Point::Point |
| ccpCompOp     | Point::compOp |
| ccpLerp       | Point::lerp |
| ccpFuzzyEqual | Point::fuzzyEqual |
| ccpCompMult   | Point::Point |
| ccpAngleSigned | Point::getAngle |
| ccpAngle      | Point::getAngle |
| ccpRotateByAngle | Point::rotateByAngle |
| ccpLineInersect | Point::isLineIntersect |
| ccpSegmentIntersect | Point::isSegmentIntersect |
| ccpIntersectPoint | Point::getIntersectPoint |
| CCPointMake   | Point::Point |
| CCSizeMake    | Size::Size |
| CCRectMake    | Rect::Rect |
| PointZero     | Point::ZERO |
| SizeZero      | Size::ZERO |
| RectZero      | Rect::ZERO |
| TiledGrid3DAction::tile | TiledGrid3DAction::getTile |
| TiledGrid3DAction::originalTile | TiledGrid3DAction::getOriginalTile |
| TiledGrid3D::tile | TiledGrid3D::getTile |
| TiledGrid3D::originalTile | TiledGrid3D::getOriginalTile |
| Grid3DAction::vertex | Grid3DAction::getVertex |
| Grid3DAction::originalVertex | Grid3DAction::getOriginalVertex |
| Grid3D::vertex | Grid3D::getVertex |
| Grid3D::originalVertex | Grid3D::getOriginalVertex |
| Configuration::sharedConfiguration | Configuration::getInstance |
| Configuration::purgeConfiguration | Configuration::destroyInstance() |
| Director::sharedDirector() | Director::getInstance() |
| FileUtils::sharedFileUtils | FileUtils::getInstance |
| FileUtils::purgeFileUtils | FileUtils::destroyInstance |
| EGLView::sharedOpenGLView | EGLView::getInstance |
| ShaderCache::sharedShaderCache | ShaderCache::getInstance |
| ShaderCache::purgeSharedShaderCache | ShaderCache::destroyInstance |
| AnimationCache::sharedAnimationCache | AnimationCache::getInstance |
| AnimationCache::purgeSharedAnimationCache | AnimationCache::destroyInstance |
| SpriteFrameCache::sharedSpriteFrameCache | SpriteFrameCache::getInstance |
| SpriteFrameCache:: purgeSharedSpriteFrameCache | SpriteFrameCache::destroyInstance |
| NotificationCenter::sharedNotificationCenter | NotificationCenter::getInstance |
| NotificationCenter:: purgeNotificationCenter | NotificationCenter::destroyInstance |
| Profiler::sharedProfiler | Profiler::getInstance |
| UserDefault::sharedUserDefault | UserDefault::getInstance |
| UserDefault::purgeSharedUserDefault | UserDefault::destroyInstance |
| Application::sharedApplication | Application::getInstance |
| ccc3()        | Color3B() |
| ccc3BEqual()  | Color3B::equals() |
| ccc4()        | Color4B() |
| ccc4FFromccc3B() | Color4F() |
| ccc4f()       | Color4F() |
| ccc4FFromccc4B() | Color4F() |
| ccc4BFromccc4F() | Color4B() |
| ccc4FEqual()  | Color4F::equals() |
| ccWHITE       | Color3B::WHITE |
| ccYELLOW      | Color3B::YELLOW |
| ccBLUE        | Color3B::BLUE |
| ccGREEN       | Color3B::GREEN |
| ccRED         | Color3B::RED |
| ccMAGENTA     | Color3B::MAGENTA |
| ccBLACK       | Color3B::BLACK |
| ccORANGE      | Color3B::ORANGE |
| ccGRAY        | Color3B::GRAY |
| kBlendFuncDisable | BlendFunc::BLEND_FUNC_DISABLE |