ParticleSystemGroup.cpp

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#include <tdme/engine/ParticleSystemGroup.h>
 
#include <string>
#include <vector>
 
#include <tdme/tdme.h>
#include <tdme/engine/primitives/BoundingBox.h>
#include <tdme/engine/Engine.h>
#include <tdme/engine/FogParticleSystem.h>
#include <tdme/engine/Object.h>
#include <tdme/engine/ObjectParticleSystem.h>
#include <tdme/engine/ParticleSystem.h>
#include <tdme/engine/Partition.h>
#include <tdme/engine/PointsParticleSystem.h>
#include <tdme/engine/Transform.h>
 
using std::string;
using std::vector;
 
using tdme::engine::primitives::BoundingBox;
using tdme::engine::Engine;
using tdme::engine::FogParticleSystem;
using tdme::engine::Object;
using tdme::engine::ObjectParticleSystem;
using tdme::engine::ParticleSystem;
using tdme::engine::ParticleSystemGroup;
using tdme::engine::Partition;
using tdme::engine::PointsParticleSystem;
using tdme::engine::Transform;
 
ParticleSystemGroup::ParticleSystemGroup(const string& id, bool autoEmit, bool contributesShadows, bool receivesShadows, const vector<ParticleSystem*>& particleSystems) :
    id(id), autoEmit(autoEmit), contributesShadows(contributesShadows), receivesShadows(receivesShadows), particleSystems(particleSystems)
{
    this->enabled = true;
    this->pickable = false;
    this->effectColorMul.set(1.0f, 1.0f, 1.0f, 1.0f);
    this->effectColorAdd.set(0.0f, 0.0f, 0.0f, 0.0f);
    this->contributesShadows = false;
    this->receivesShadows = false;
    this->entityTransformMatrix.identity();
    // TODO: put parent entity into a interface
    for (auto particleSystem: particleSystems) {
        auto ops = dynamic_cast<ObjectParticleSystem*>(particleSystem);
        if (ops != nullptr) ops->setParentEntity(this);
        auto pps = dynamic_cast<PointsParticleSystem*>(particleSystem);
        if (pps != nullptr) pps->setParentEntity(this);
        auto fps = dynamic_cast<FogParticleSystem*>(particleSystem);
        if (fps != nullptr) fps->setParentEntity(this);
    }
}
 
ParticleSystemGroup::~ParticleSystemGroup() {
    for (auto particleSystem: particleSystems) delete particleSystem;
}
 
void ParticleSystemGroup::initialize()
{
    for (auto particleSystem: particleSystems) dynamic_cast<Entity*>(particleSystem)->initialize();
}
 
void ParticleSystemGroup::setTransform(const Transform& transform)
{
    Transform::setTransform(transform);
    //
    auto entityTransform = parentTransform * (*this);
    entityTransformMatrix = entityTransform.getTransformMatrix();
    //
    for (auto particleSystem: particleSystems) dynamic_cast<Entity*>(particleSystem)->setTransform(*this);
    // update world bounding box
    worldBoundingBox.fromBoundingVolumeWithTransformMatrix(getBoundingBox(), entityTransformMatrix);
    // update object
    if (parentEntity == nullptr && frustumCulling == true && engine != nullptr && enabled == true) engine->partition->updateEntity(this);
}
 
void ParticleSystemGroup::update()
{
    Transform::update();
    //
    for (auto particleSystem: particleSystems) dynamic_cast<Entity*>(particleSystem)->setTransform(*this);
    // update world bounding box
    worldBoundingBox.fromBoundingVolumeWithTransformMatrix(getBoundingBox(), entityTransformMatrix);
    // update object
    if (parentEntity == nullptr && frustumCulling == true && engine != nullptr && enabled == true) engine->partition->updateEntity(this);
}
 
void ParticleSystemGroup::setEnabled(bool enabled)
{
    // return if enable state has not changed
    if (this->enabled == enabled) return;
 
    // frustum if root entity
    if (parentEntity == nullptr) {
        // frustum culling enabled?
        if (frustumCulling == true) {
            // yeo, add or remove from partition
            if (enabled == true) {
                if (engine != nullptr) engine->partition->addEntity(this);
            } else {
                if (engine != nullptr) engine->partition->removeEntity(this);
            }
        }
    }
 
    //
    this->enabled = enabled;
}
 
void ParticleSystemGroup::updateParticles()
{
    // skip if no ps attached
    if (particleSystems.size() == 0) return;
 
    // update particles
    for (auto particleSystem: particleSystems) particleSystem->updateParticles();
 
    //
    if (parentEntity == nullptr && frustumCulling == true && engine != nullptr && enabled == true) engine->partition->updateEntity(this);
}
 
void ParticleSystemGroup::setFrustumCulling(bool frustumCulling) {
    // check if enabled and engine attached
    if (enabled == true && engine != nullptr) {
        // had frustum culling
        if (this->frustumCulling == true) {
            // yep, remove if set to false now
            if (frustumCulling == false) engine->partition->removeEntity(this);
        } else {
            // yep, add if set to true now
            if (frustumCulling == true) engine->partition->addEntity(this);
        }
    }
    this->frustumCulling = frustumCulling;
    // delegate change to engine
    if (engine != nullptr) engine->updateEntityRegistration(this);
}
 
void ParticleSystemGroup::setAutoEmit(bool autoEmit) {
    // delegate to sub particle systems
    for (auto particleSystem: particleSystems) particleSystem->setAutoEmit(autoEmit);
    this->autoEmit = autoEmit;
    // delegate change to engine
    if (engine != nullptr) engine->updateEntityRegistration(this);
}
 
void ParticleSystemGroup::dispose()
{
    for (auto particleSystem: particleSystems) dynamic_cast<Entity*>(particleSystem)->dispose();
}
 
void ParticleSystemGroup::setEngine(Engine* engine)
{
    if (this->engine != nullptr) this->engine->deregisterEntity(this);
    this->engine = engine;
    if (engine != nullptr) engine->registerEntity(this);
    for (auto particleSystem: particleSystems) dynamic_cast<Entity*>(particleSystem)->setEngine(engine);
}
 
void ParticleSystemGroup::setRenderer(Renderer* renderer)
{
    for (auto particleSystem: particleSystems) dynamic_cast<Entity*>(particleSystem)->setRenderer(renderer);
}