C++ (Cpp) PointF::length Examples

Example #1

File: particleaffector.cpp Project: Cayan/otclient

void AttractionAffector::updateParticle(const ParticlePtr& particle, float elapsedTime)
{
    if(!m_active)
        return;

    PointF pPosition = particle->getPosition();
    PointF d = PointF(m_position.x - pPosition.x, pPosition.y - m_position.y);
    if(d.length() == 0)
        return;

    PointF direction = PointF(1, 1);
    if(m_repelish)
        direction = PointF(-1, -1);

    PointF pVelocity = particle->getVelocity() + (d / d.length() * m_acceleration * elapsedTime) * direction;
    particle->setVelocity(pVelocity - pVelocity * m_reduction/100.0 * elapsedTime);
}