Physics 碰撞檢測回調方法出錯或者沒有效果解決方法

1.碰撞檢測回調方法編譯出錯;

auto *listener = EventListenerPhysicsContact::create();

listener->onContactBegin = CC_CALLBACK_1(HelloWorld::onContactBegin,this);

在3.0rc版本中回調函數的參數變爲一個,不能使用原來的兩個參數;

bool HelloWorld::onContactBegin(PhysicsContact& contact)

{

    auto spriteA = (Sprite*)contact.getShapeA()->getBody()->getNode();

    auto spriteB = (Sprite*)contact.getShapeB()->getBody()->getNode();

    return true;

}

2.回調方法不調用

添加如下代碼:

PhysicsBody * body = PhysicsBody::createCircle(_ball->getContentSize().width/2);

PhysicsBody * body2 = PhysicsBody::createCircle(_ball->getContentSize().width/2);

body->setMass(1.0f);

body->setContactTestBitmask(0xFFFFFFFF);

body2->setMass(1.0f);

body2->setContactTestBitmask(0xFFFFFFFF);