/** See Ogre::ParticleAffector. */
void _affectParticles(Ogre::ParticleSystem *psys, Ogre::Real timeElapsed)
{
Ogre::ParticleIterator pi = psys->_getIterator();
while (!pi.end())
{
Ogre::Particle *p = pi.getNext();
const Ogre::Real life_time = p->totalTimeToLive;
Ogre::Real particle_time = p->timeToLive;
Ogre::Real width = mParent->getDefaultWidth();
Ogre::Real height = mParent->getDefaultHeight();
if(life_time-particle_time < mGrowTime)
{
Ogre::Real scale = (life_time-particle_time) / mGrowTime;
width *= scale;
height *= scale;
}
if(particle_time < mFadeTime)
{
Ogre::Real scale = particle_time / mFadeTime;
width *= scale;
height *= scale;
}
p->setDimensions(width, height);
}
}
void applyWindForce(Ogre::ParticleSystem *psys, Ogre::Real timeElapsed)
{
const Ogre::Vector3 vec = mDirection * mForce * timeElapsed;
Ogre::ParticleIterator pi = psys->_getIterator();
while (!pi.end())
{
Ogre::Particle *p = pi.getNext();
p->direction += vec;
}
}
void applyPointForce(Ogre::ParticleSystem *psys, Ogre::Real timeElapsed)
{
const Ogre::Real force = mForce * timeElapsed;
Ogre::ParticleIterator pi = psys->_getIterator();
while (!pi.end())
{
Ogre::Particle *p = pi.getNext();
const Ogre::Vector3 vec = (p->position - mPosition).normalisedCopy() * force;
p->direction += vec;
}
}
void applyWindForce(Ogre::ParticleSystem *psys, Ogre::Real timeElapsed)
{
const Ogre::Vector3 vec = mDirection * mForce * timeElapsed;
Ogre::ParticleIterator pi = psys->_getIterator();
while (!pi.end())
{
Ogre::Particle *p = pi.getNext();
#if OGRE_VERSION >= (1 << 16 | 10 << 8 | 0)
p->mDirection += vec;
#else
p->direction += vec;
#endif
}
}
void applyPointForce(Ogre::ParticleSystem *psys, Ogre::Real timeElapsed)
{
const Ogre::Real force = mForce * timeElapsed;
Ogre::ParticleIterator pi = psys->_getIterator();
while (!pi.end())
{
Ogre::Particle *p = pi.getNext();
#if OGRE_VERSION >= (1 << 16 | 10 << 8 | 0)
Ogre::Vector3 position = p->mPosition;
#else
Ogre::Vector3 position = p->position;
#endif
Ogre::Vector3 vec = (mPosition - position).normalisedCopy() * force;
#if OGRE_VERSION >= (1 << 16 | 10 << 8 | 0)
p->mDirection += vec;
#else
p->direction += vec;
#endif
}
}
void gkOgreParticleAffector::_affectParticles(Ogre::ParticleSystem* psys, Ogre::Real timeElapsed)
{
GK_ASSERT(m_creator);
gkParticleSettingsProperties& props = m_creator->getParticleProperties();
if (props.m_gravity != 0)
{
Ogre::ParticleIterator pi = psys->_getIterator();
while (!pi.end())
{
Ogre::Particle* p = pi.getNext();
//float size = Ogre::Math::RangeRandom(props.m_size - props.m_sizeRandom, props.m_size + props.m_sizeRandom);
//p->setDimensions(size, size);
gkParticleVisualData* data = static_cast<gkParticleVisualData*>(p->getVisualData());
if (data)
{
p->direction = data->m_initDir + props.m_gravity * (p->totalTimeToLive - p->timeToLive) * gkVector3(0,0,-9.8f);
}
}
}
}
/** See Ogre::ParticleAffector. */
void _affectParticles(Ogre::ParticleSystem *psys, Ogre::Real timeElapsed)
{
Ogre::ParticleIterator pi = psys->_getIterator();
while (!pi.end())
{
Ogre::Particle *p = pi.getNext();
#if OGRE_VERSION >= (1 << 16 | 10 << 8 | 0)
const Ogre::Real life_time = p->mTotalTimeToLive;
Ogre::Real particle_time = p->mTimeToLive;
#else
const Ogre::Real life_time = p->totalTimeToLive;
Ogre::Real particle_time = p->timeToLive;
#endif
Ogre::Real width = mParent->getDefaultWidth();
Ogre::Real height = mParent->getDefaultHeight();
if(life_time-particle_time < mGrowTime)
{
Ogre::Real scale = (life_time-particle_time) / mGrowTime;
assert (scale >= 0);
// HACK: don't allow zero-sized particles which can rarely cause an AABB assertion in Ogre to fail
scale = std::max(scale, 0.00001f);
width *= scale;
height *= scale;
}
if(particle_time < mFadeTime)
{
Ogre::Real scale = particle_time / mFadeTime;
assert (scale >= 0);
// HACK: don't allow zero-sized particles which can rarely cause an AABB assertion in Ogre to fail
scale = std::max(scale, 0.00001f);
width *= scale;
height *= scale;
}
p->setDimensions(width, height);
}
}