void SweepAndPrune::update( Config::Real const & dt )
{
int detectedCollisions = 0 ;
static ::std::vector<::std::pair<Math::BoundingBox2D<Config::Real>, int> > s_objectList ;
handleObjectLife() ;
// Initializes object list
s_objectList.erase(s_objectList.begin(), s_objectList.end()) ;
for(int cpt=0, end=m_objects.size() ; cpt<end ; ++cpt)
{
if(m_objects[cpt]->isActive()) // if the object is not active it is ignored
{
s_objectList.push_back(::std::make_pair(m_objects[cpt]->getBoundingBox(), cpt)) ;
}
}
// Sorts bounding box list
::std::sort(s_objectList.begin(), s_objectList.end()) ;
// Looks for collisions
//::std::cout<<"Looking for collisions"<<::std::endl ;
for(int cpt1=0, end=s_objectList.size() ; cpt1<end ; ++cpt1)
{
int cpt2=cpt1+1 ;
while(cpt2<end && s_objectList[cpt1].first.interval(0).intersect(s_objectList[cpt2].first.interval(0)))
{
if(!s_objectList[cpt1].first.interval(1).intersect(s_objectList[cpt2].first.interval(1))) { ++cpt2 ; continue ; }
int object1 = s_objectList[cpt1].second ;
int object2 = s_objectList[cpt2].second ;
// If at least one object is not active, do not report collisions
if(!m_objects[object1]->isActive() || !m_objects[object2]->isActive()) { ++cpt2 ; continue ; }
// Never report collision between triggers
if(m_objects[object1]->getType()==CollisionObject::trigger && m_objects[object2]->getType()==CollisionObject::trigger) { ++cpt2 ; continue ; }
if(areColliding(object1, object2))
{
CollisionObject::CollisionMessage message(m_objects[object1], m_objects[object2]) ;
m_collisionEmitter.send(message) ;
if(m_objects[object1]->getType()==CollisionObject::trigger) // If object1 if a trigger, the collision is only reported to it
{
++detectedCollisions ;
m_objects[object1]->onCollision(message) ;
}
else if(m_objects[object2]->getType()==CollisionObject::trigger) // If object2 if a trigger, the collision is only reported to it
{
++detectedCollisions ;
m_objects[object2]->onCollision(message) ;
}
else // The two objects are entities, collision is signaled to both of them
{
++detectedCollisions ;
m_objects[object1]->onCollision(message) ;
m_objects[object2]->onCollision(message) ;
}
}
++cpt2 ;
}
}
//if(detectedCollisions!=0)
//{
// //::std::cout<<"Sweep and prune detected "<<detectedCollisions<<" collisions."<<::std::endl ;
//}
}
//
// Run the game
//
void Pong::run()
{
while (window.isOpen())
{
eventLoop();
// Update the positions of paddle1
if (sf::Keyboard::isKeyPressed(sf::Keyboard::W))
{
double top = paddle1.getPosition().y - Paddle::HEIGHT / 2.0;
if (top > 0.0)
paddle1.moveUp();
}
else if (sf::Keyboard::isKeyPressed(sf::Keyboard::S))
{
double bottom = paddle1.getPosition().y + Paddle::HEIGHT / 2.0;
if (bottom < SCREEN_HEIGHT)
paddle1.moveDown();
}
// Update the position of paddle2
if (sf::Keyboard::isKeyPressed(sf::Keyboard::Up))
{
double top = paddle2.getPosition().y - Paddle::HEIGHT / 2.0;
if (top > 0.0)
paddle2.moveUp();
}
else if (sf::Keyboard::isKeyPressed(sf::Keyboard::Down))
{
double bottom = paddle2.getPosition().y + Paddle::HEIGHT / 2.0;
if (bottom < SCREEN_HEIGHT)
paddle2.moveDown();
}
// Update the position of the ball
ball.updatePosition();
// Top/Bottom edge collisions
if (ball.getBottom() < 0)
{
sf::Vector2f oldSpeed = ball.getSpeed();
ball.setSpeed(oldSpeed.x, -oldSpeed.y);
//ball.setPosition(ball.getPosition().x, Ball::SIZE / 2);
}
else if (ball.getTop() > SCREEN_HEIGHT)
{
sf::Vector2f oldSpeed = ball.getSpeed();
ball.setSpeed(oldSpeed.x, -oldSpeed.y);
//ball.setPosition(ball.getPosition().x, SCREEN_HEIGHT - Ball::SIZE / 2);
}
// Paddles
// Check the direction of the ball
if (areColliding(ball, paddle1) || areColliding(ball, paddle2))
{
sf::Vector2f oldSpeed = ball.getSpeed();
ball.setSpeed(-oldSpeed.x, oldSpeed.y);
}
// Update the drawing
window.clear(sf::Color::Black);
window.draw(paddle1);
window.draw(paddle2);
window.draw(ball);
window.display();
}
}