Cocos2d-x中Sprite与Box2D中b2body位置不一致问题


最近在学习Box2d,遇到一个问题,就是创建的sprite的位置和b2body的位置不一致,所以想请大大们帮忙看看。相关部分代码.


 
Sprite* HelloWorld::createPhySprite(b2World* pWorld){ //创建一个测试sprite auto pSp = Sprite::create("CloseNormal.png"); pSp->setAnchorPoint(Vec2::ZERO); pSp->setPosition(Vec2(Director::getInstance()->getVisibleSize()/2)); // pSp->setContentSize(Size(1*PIXEL_TRANS_RADIO, 1*PIXEL_TRANS_RADIO)); // pSp->gets //pSp->setTextureRect(Rect(0,0,pSp->getContentSize().width,pSp->getContentSize().height)); pSp->setTag(TAG_TEST); //创建body描述 b2BodyDef* pBd = new b2BodyDef(); pBd->active = true; pBd->type = b2BodyType::b2_dynamicBody; pBd->bullet = false; pBd->position.Set(pSp->getPosition().x/PIXEL_TRANS_RADIO, pSp->getPosition().y/PIXEL_TRANS_RADIO); //创建fixture描述 b2FixtureDef* pFd = new b2FixtureDef(); b2PolygonShape* pRect = new b2PolygonShape(); //setAsBox设置的是半高和半宽 pRect->SetAsBox((pSp->getContentSize().width/2)/PIXEL_TRANS_RADIO,(pSp->getContentSize().height/2)/PIXEL_TRANS_RADIO); pFd->shape = pRect; b2Body *pB = pWorld->CreateBody(pBd); pB->CreateFixture(pFd); pB->SetUserData(pSp); return pSp; }

PS:其中的PIXEL_TRANS_RADIO为像素到米的转换值,值是30

最后的效果图如下:

可以看到DebugDraw得到的b2body位置和Sprite的位置有明显的偏差,所以想请求一下帮助,谢谢!

cocos2d-x Box2D C++

く鹰仓杏璃 9 years, 9 months ago

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