Cocos2d-x 2.x 升级为 3.x 常见变化纪录

发布时间：2020-12-14 20:03:40 所属栏目：百科来源：网络整理

导读：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 C

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

3.0
Point(x,y)
p1+p2;
p1-p2
p1*p2
p.getLength()
p1.dot(p2)
Color3B()
Color4B()
Color3B::WHITE
Point::ZERO
Size:ZERO

3.shared***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();

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__,##__VA_ARGS__)

#define CC_CALLBACK_1(__selector__,std::placeholders::_1,##__VA_ARGS__)

#define CC_CALLBACK_2(__selector__,std::placeholders::_2,##__VA_ARGS__)

#define CC_CALLBACK_3(__selector__,std::placeholders::_3 ##__VA_ARGS__) 7.使用"Function"对象 CallFunc::create([&](){ Sprite *sprite = Sprite::create("s"); this->addChild(sprite); }); 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 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

（编辑：李大同）

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