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Move particle emitter/affector handling to separate functions

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This commit is contained in:
scrawl 2015-03-23 16:49:33 +01:00
parent 36ad40827b
commit 018115601a
1 changed files with 61 additions and 52 deletions
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113
components/nifosg/nifloader.cpp
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@ -442,12 +442,13 @@ namespace NifOsg
for (size_t i = 0; i <props.length();++i)
{
if (!props[i].empty())
handleProperty(props[i].getPtr(), nifNode, applyTo, boundTextures, animflags);
handleProperty(props[i].getPtr(), applyTo, boundTextures, animflags);
}
}
void setupController(const Nif::Controller* ctrl, Controller* toSetup, int animflags)
{
// TODO: uncomment this, currently commented for easier testing
//bool autoPlay = animflags & Nif::NiNode::AnimFlag_AutoPlay;
//if (autoPlay)
toSetup->mSource = boost::shared_ptr<ControllerSource>(new FrameTimeSource);
@ -455,7 +456,6 @@ namespace NifOsg
toSetup->mFunction = boost::shared_ptr<ControllerFunction>(new ControllerFunction(ctrl, 1 /*autoPlay*/));
}
osg::ref_ptr<osg::Node> handleNode(const Nif::Node* nifNode, bool createSkeleton,
std::map<int, int> boundTextures, int animflags, int particleflags, bool skipMeshes, TextKeyMap* textKeys, osg::Node* rootNode=NULL)
{
@ -623,7 +623,6 @@ namespace NifOsg
}
}
void handleMaterialControllers(const Nif::Property *materialProperty, osg::Node* node, osg::StateSet *stateset, int animflags)
{
for (Nif::ControllerPtr ctrl = materialProperty->controller; !ctrl.empty(); ctrl = ctrl->next)
@ -651,7 +650,6 @@ namespace NifOsg
}
}
void handleTextureControllers(const Nif::Property *texProperty, osg::Node* node, osg::StateSet *stateset, int animflags)
{
for (Nif::ControllerPtr ctrl = texProperty->controller; !ctrl.empty(); ctrl = ctrl->next)
@ -724,11 +722,14 @@ namespace NifOsg
}
}
void handleParticleSystem(const Nif::Node *nifNode, osg::Group *parentNode, int animflags, int particleflags, osg::Node* rootNode)
// Load the initial state of the particle system, i.e. the initial particles and their positions, velocity and colors.
void handleParticleInitialState(const Nif::Node* nifNode, osgParticle::ParticleSystem* partsys, const Nif::NiParticleSystemController* partctrl,
osgParticle::ParticleProcessor::ReferenceFrame rf)
{
osg::ref_ptr<ParticleSystem> partsys (new ParticleSystem);
partsys->setSortMode(osgParticle::ParticleSystem::SORT_BACK_TO_FRONT);
// TODO: also take into account the transform by placement in the scene (should be done post-load)
osg::Matrix particletransform;
if (rf == osgParticle::ParticleProcessor::ABSOLUTE_RF)
particletransform = getWorldTransform(nifNode);
const Nif::NiAutoNormalParticlesData *particledata = NULL;
if(nifNode->recType == Nif::RC_NiAutoNormalParticles)
@ -738,35 +739,6 @@ namespace NifOsg
else
return;
const Nif::NiParticleSystemController* partctrl = NULL;
for (Nif::ControllerPtr ctrl = nifNode->controller; !ctrl.empty(); ctrl = ctrl->next)
{
if (!(ctrl->flags & Nif::NiNode::ControllerFlag_Active))
continue;
if(ctrl->recType == Nif::RC_NiParticleSystemController || ctrl->recType == Nif::RC_NiBSPArrayController)
partctrl = static_cast<Nif::NiParticleSystemController*>(ctrl.getPtr());
}
if (!partctrl)
{
std::cerr << "No particle controller found " << std::endl;
return;
}
std::vector<int> targets;
if (partctrl->recType == Nif::RC_NiBSPArrayController)
{
getAllNiNodes(partctrl->emitter.getPtr(), targets);
}
osgParticle::ParticleProcessor::ReferenceFrame rf = (particleflags & Nif::NiNode::ParticleFlag_LocalSpace)
? osgParticle::ParticleProcessor::RELATIVE_RF
: osgParticle::ParticleProcessor::ABSOLUTE_RF;
// TODO: also take into account the transform by placement in the scene
osg::Matrix particletransform;
if (rf == osgParticle::ParticleProcessor::ABSOLUTE_RF)
particletransform = getWorldTransform(nifNode);
int i=0;
for (std::vector<Nif::NiParticleSystemController::Particle>::const_iterator it = partctrl->particles.begin();
i<particledata->activeCount && it != partctrl->particles.end(); ++it, ++i)
@ -789,18 +761,17 @@ namespace NifOsg
created->setSizeRange(osgParticle::rangef(size, size));
}
}
partsys->setQuota(partctrl->numParticles);
partsys->getDefaultParticleTemplate().setSizeRange(osgParticle::rangef(partctrl->size, partctrl->size));
partsys->getDefaultParticleTemplate().setColorRange(osgParticle::rangev4(osg::Vec4f(1.f,1.f,1.f,1.f), osg::Vec4f(1.f,1.f,1.f,1.f)));
partsys->getDefaultParticleTemplate().setAlphaRange(osgParticle::rangef(1.f, 1.f));
// ---- emitter
osg::ref_ptr<Emitter> handleParticleEmitter(const Nif::NiParticleSystemController* partctrl)
{
std::vector<int> targets;
if (partctrl->recType == Nif::RC_NiBSPArrayController)
{
getAllNiNodes(partctrl->emitter.getPtr(), targets);
}
osg::ref_ptr<Emitter> emitter = new Emitter(targets);
emitter->setParticleSystem(partsys);
emitter->setReferenceFrame(osgParticle::ParticleProcessor::RELATIVE_RF);
osgParticle::ConstantRateCounter* counter = new osgParticle::ConstantRateCounter;
if (partctrl->emitFlags & Nif::NiParticleSystemController::NoAutoAdjust)
@ -823,6 +794,43 @@ namespace NifOsg
placer->setZRange(-partctrl->offsetRandom.z(), partctrl->offsetRandom.z());
emitter->setPlacer(placer);
return emitter;
}
void handleParticleSystem(const Nif::Node *nifNode, osg::Group *parentNode, int animflags, int particleflags, osg::Node* rootNode)
{
osg::ref_ptr<ParticleSystem> partsys (new ParticleSystem);
partsys->setSortMode(osgParticle::ParticleSystem::SORT_BACK_TO_FRONT);
const Nif::NiParticleSystemController* partctrl = NULL;
for (Nif::ControllerPtr ctrl = nifNode->controller; !ctrl.empty(); ctrl = ctrl->next)
{
if (!(ctrl->flags & Nif::NiNode::ControllerFlag_Active))
continue;
if(ctrl->recType == Nif::RC_NiParticleSystemController || ctrl->recType == Nif::RC_NiBSPArrayController)
partctrl = static_cast<Nif::NiParticleSystemController*>(ctrl.getPtr());
}
if (!partctrl)
{
std::cerr << "No particle controller found " << std::endl;
return;
}
osgParticle::ParticleProcessor::ReferenceFrame rf = (particleflags & Nif::NiNode::ParticleFlag_LocalSpace)
? osgParticle::ParticleProcessor::RELATIVE_RF
: osgParticle::ParticleProcessor::ABSOLUTE_RF;
handleParticleInitialState(nifNode, partsys, partctrl, rf);
partsys->setQuota(partctrl->numParticles);
partsys->getDefaultParticleTemplate().setSizeRange(osgParticle::rangef(partctrl->size, partctrl->size));
partsys->getDefaultParticleTemplate().setColorRange(osgParticle::rangev4(osg::Vec4f(1.f,1.f,1.f,1.f), osg::Vec4f(1.f,1.f,1.f,1.f)));
partsys->getDefaultParticleTemplate().setAlphaRange(osgParticle::rangef(1.f, 1.f));
osg::ref_ptr<Emitter> emitter = handleParticleEmitter(partctrl);
emitter->setParticleSystem(partsys);
emitter->setReferenceFrame(osgParticle::ParticleProcessor::RELATIVE_RF);
// Note: we assume that the Emitter node is placed *before* the Particle node in the scene graph.
// This seems to be true for all NIF files in the game that I've checked, suggesting that NIFs work similar to OSG with regards to update order.
@ -859,6 +867,11 @@ namespace NifOsg
partsys->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
partsys->getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
// particle system updater (after the emitters and affectors in the scene graph)
// I think for correct culling needs to be *before* the ParticleSystem, though osg examples do it the other way
osg::ref_ptr<osgParticle::ParticleSystemUpdater> updater = new osgParticle::ParticleSystemUpdater;
updater->addParticleSystem(partsys);
parentNode->addChild(updater);
if (rf == osgParticle::ParticleProcessor::RELATIVE_RF)
parentNode->addChild(geode);
@ -869,11 +882,6 @@ namespace NifOsg
trans->addChild(geode);
parentNode->addChild(trans);
}
// particle system updater (after the emitters and affectors in the scene graph)
osgParticle::ParticleSystemUpdater* updater = new osgParticle::ParticleSystemUpdater;
updater->addParticleSystem(partsys);
parentNode->addChild(updater);
}
void triShapeToGeometry(const Nif::NiTriShape *triShape, osg::Geometry *geometry, osg::Geode* parentGeode, const std::map<int, int>& boundTextures, int animflags)
@ -1061,7 +1069,7 @@ namespace NifOsg
}
void handleProperty(const Nif::Property *property, const Nif::Node* nifNode,
void handleProperty(const Nif::Property *property,
osg::Node *node, std::map<int, int>& boundTextures, int animflags)
{
osg::StateSet* stateset = node->getOrCreateStateSet();
@ -1088,6 +1096,7 @@ namespace NifOsg
stateset->setMode(GL_CULL_FACE, stencilprop->data.drawMode == 3 ? osg::StateAttribute::OFF
: osg::StateAttribute::ON);
// TODO:
// Stencil settings not enabled yet, not sure if the original engine is actually using them,
// since they might conflict with Morrowind's stencil shadows.
/*