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Building Android Games with Cocos2d-x by Raydelto Hernandez

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Collision detection

First, let us implement our onCollision instance method. This is going to be called each time a collision between two physics bodies is detected. As we can see in the following code, when the bomb physics body collides with our player, it makes the bomb invisible:

bool HelloWorld::onCollision(PhysicsContact& contact){
  _sprBomb->setVisible(false);
  return false;
}

Note

This is a good place for putting some logs during the development process in order to find out when the collisions are being detected. In Cocos2d-x 3.4 you can print the log messages using the CCLOG macro. This could be turned on by defining the macro COCOS2D_DEBUG as follows: #define COCOS2D_DEBUG 1.

As we can see, this method returns a Boolean value. It indicates ...

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