cocos2d-x之物理引擎初试

发现问题：监听代码部分不能在onEnter()段书写

bool HelloWorld::init()

{

if ( !Layer::init() )

{

return false;

}

visibleSize=Director::getInstance()->getVisibleSize();

auto listener=EventListenerTouchOneByOne::create();

listener->onTouchBegan = [this](Touch *t,Event *){

this->addBall(t->getLocation());

return false;

};

Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener,this);

return true;

}

void HelloWorld::addBall(float positionX,float positionY){

auto b=Sprite::create("GOODS_3201_65.png");

b->setPhysicsBody(PhysicsBody::createBox(b->getContentSize()));

b->setPosition(positionX,positionY);

addChild(b);

}

void HelloWorld::onEnter(){

Layer::onEnter();

addBall(visibleSize.width/2,visibleSize.height/2);

addEdges();

}

void HelloWorld::addBall(Vec2 position){

addBall(position.x,position.y);

}

void HelloWorld::addEdges(){

auto body=PhysicsBody::createEdgeBox(visibleSize,PHYSICSBODY_MATERIAL_DEFAULT,3);

auto edgeShape=Node::create();

edgeShape->setPhysicsBody(body);

edgeShape->setPosition(visibleSize.width/2,visibleSize.height/2);

addChild(edgeShape);

}