cocos2dx 2.x到cocos2dx 3.x的一些改变
src:http://blog.csdn.net/u012234115/article/details/39717853
cocos2dx 3.x之后用的都是c++ 11的新语法，另外在引擎源码里面有很多地方作出了改变。
1.去CC
之前2.0的CC**,把CC都去掉，基本的元素都是保留的
2.0
CCSprite CCCallFunc CCNode ..
3.0
Sprite CallFunc Node ..
2.cc***结构体改变
2.0
ccp(x,y)
ccpAdd(p1,p2)
ccpSub
ccpMult
ccpLength(p)
ccpDot(p1,p2);
ccc3()
ccc4()
ccWHITE
CCPointZero
CCSizeZero
2.0
Point(x,y)
p1+p2;
p1-p2
p1*p2
p.getLength()
p1.dot(p2)
Color3B()
Color4B()
Color3B::WHITE
Point::ZERO
Size:ZERO
3.shared单例对象改变
2.0
CCSize winSize = CCDirector::sharedDirector()->getWinSize();
SpriteFrameCache::sharedSpriteFrameCache()
AnimationCache::sharedAnimationCache()
NotificationCenter::sharedNotificationCenter()
…
3.0
Size size = Director::getInstance()->getWinSize();
SpriteFrameCache::getInstance()
AnimationCache::getInstance()
NotificationCenter::getInstance()
…
4.POD类别
使用const为Point，Size,Rect进行常量修饰
2.0
void setPoint(CCPoint p)
3.0
void setPoint(const Point& p)
5.点触事件，
此部分全面更新采用Event Listener
auto dispatcher = Director::getInstance()->getEventDispatcher();
auto touchListener = EventListenerTouchOneByOne::create();
touchListener->onTouchBegan = CC_CALLBACK_2(FBMainScene::onTouchBegan,this);
touchListener->onTouchMoved = CC_CALLBACK_2(FBMainScene::onTouchMoved,this);
touchListener->onTouchEnded = CC_CALLBACK_2(FBMainScene::onTouchEnded, this);
dispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);
bool FBMainScene::onTouchBegan(Touch *touch,Event *pEvent){
CCLOG("onTouchBegan");
Point point = this->convertToWorldSpace(this->convertTouchToNodeSpace(touch));
return true;
}
void FBMainScene::onTouchMoved(Touch *touch,Event *pEvent){
CCLOG("onTouchMoved");
}
void FBMainScene::onTouchEnded(Touch *touch,Event *pEvent){
CCLOG("onTouchEnded");
}
//获得触点的方法也发生了改变：
Point point = this->convertToWorldSpace(this->convertTouchToNodeSpace(touch));
//dispatcher控制方法：
dispatcher->addEventListener…
dispatcher->removeEventListener(listener);
dispatcher->removeAllListeners();
新的触摸机制是重大变化，可以查看其详细解释
下面是另一个写法
[cpp] view plaincopy
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
可以发现里面采用了lamda表达式
6.CC_CALLBACK_*
CC_CALLBACK_0 CC_CALLBACK_1 CC_CALLBACK_2 CC_CALLBACK_3
回调函数，分别携带不同的参数，方便
2.0
CCMenuItemFont *item = CCMenuItemFont::create("返回上个场景", this, menu_selector(GameScene::backScene));
3.0
MenuItemFont *item = MenuItemLabel::create("返回上个场景", CC_CALLBACK_1(GameScene::backScene, this));
// new callbacks based on C++11
#define CC_CALLBACK_0(__selector__,__target__, ) std::bind(&__selector__,__target__, ##__VA_ARGS__)
#define CC_CALLBACK_1(__selector__,__target__, ) std::bind(&__selector__,__target__, std::placeholders::_1, ##__VA_ARGS__)
#define CC_CALLBACK_2(__selector__,__target__, ) std::bind(&__selector__,__target__, std::placeholders::_1, std::placeholders::_2, ##__VA_ARGS__)
#define CC_CALLBACK_3(__selector__,__target__, ) std::bind(&__selector__,__target__, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3 ##__VA_ARGS__)
7.使用"Function"对象
CallFunc::create([&](){
Sprite *sprite = Sprite::create("s");
this->addChild(sprite);
});
这不就是lamda表达式么
8.使用clone代替copy
2.0
CCMoveBy *action = (CCMoveBy*) move->copy();
action->autorelease();
3.0
action = move->clone();
不需要autorelease，在clone已经实现。
9.Physics Integration 物理引擎
暂无使用，box2d 在 3.0中可以延续使用
在3.0的Physics中需要定义 PhysicsWorld, PhysicsBody, PhysicsShape, PhysicsJoint 等，于box2d相仿，使用前需要定义CC_USE_PHYSICS
……继续等待补充
一些变量名以及常量名的改变：
| 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 |
// in v2.1ccColor3B color3B = ccc3(0, 0, 0);ccc3BEqual(color3B, ccc3(1, 1, 1));ccColor4B color4B = ccc4(0, 0, 0, 0);ccColor4F color4F = ccc4f(0, 0, 0, 0);color4F = ccc4FFromccc3B(color3B);color4F = ccc4FFromccc4B(color4B);ccc4FEqual(color4F, ccc4F(1, 1, 1, 1));color4B = ccc4BFromccc4F(color4F);color3B = ccWHITE;// in v3.0Color3B color3B = Color3B(0, 0, 0);color3B.equals(Color3B(1, 1, 1));Color4B color4B = Color4B(0, 0, 0, 0);Color4F color4F = Color4F(0, 0, 0, 0);color4F = Color4F(color3B);color4F = Color4F(color4B);color4F.equals(Color4F(1, 1, 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 |
未完待续~（虽然我很懒）