forked from mirror/openmw-tes3mp
Rain effect
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2 changed files with 152 additions and 19 deletions
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@ -7,10 +7,16 @@
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#include <osg/Material>
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#include <osg/Geometry>
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#include <osg/PositionAttitudeTransform>
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#include <osg/TexEnvCombine>
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#include <osg/TexMat>
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#include <osgParticle/ParticleSystem>
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#include <osgParticle/ParticleSystemUpdater>
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#include <osgParticle/ModularEmitter>
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#include <osgParticle/BoxPlacer>
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#include <osgParticle/ConstantRateCounter>
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#include <osgParticle/RadialShooter>
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#include <boost/lexical_cast.hpp>
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#include <components/misc/rng.hpp>
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@ -573,6 +579,7 @@ SkyManager::SkyManager(osg::Group* parentNode, Resource::SceneManager* sceneMana
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, mRainEnabled(false)
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, mRainSpeed(0)
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, mRainFrequency(1)
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, mWindSpeed(0.f)
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, mEnabled(true)
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, mSunEnabled(true)
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{
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@ -642,9 +649,112 @@ void SkyManager::create()
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mCreated = true;
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}
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class RainShooter : public osgParticle::Shooter
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{
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public:
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RainShooter()
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: mAngle(0.f)
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{
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}
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virtual void shoot(osgParticle::Particle* particle) const
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{
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particle->setVelocity(mVelocity);
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particle->setAngle(osg::Vec3f(-mAngle, 0, (Misc::Rng::rollProbability() * 2 - 1) * osg::PI));
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}
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void setVelocity(const osg::Vec3f& velocity)
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{
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mVelocity = velocity;
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}
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void setAngle(float angle)
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{
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mAngle = angle;
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}
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virtual osg::Object* cloneType() const
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{
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return new RainShooter;
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}
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virtual osg::Object* clone(const osg::CopyOp &) const
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{
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return new RainShooter(*this);
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}
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private:
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osg::Vec3f mVelocity;
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float mAngle;
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};
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void SkyManager::createRain()
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{
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if (mRainNode)
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return;
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mRainNode = new osg::Group;
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mRainParticleSystem = new osgParticle::ParticleSystem;
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mRainParticleSystem->setParticleAlignment(osgParticle::ParticleSystem::FIXED);
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mRainParticleSystem->setAlignVectorX(osg::Vec3f(0.1,0,0));
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mRainParticleSystem->setAlignVectorY(osg::Vec3f(0,0,-1));
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osg::ref_ptr<osg::StateSet> stateset (mRainParticleSystem->getOrCreateStateSet());
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stateset->setTextureAttributeAndModes(0, mSceneManager->getTextureManager()->getTexture2D("textures/tx_raindrop_01.dds",
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osg::Texture::CLAMP, osg::Texture::CLAMP), osg::StateAttribute::ON);
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stateset->setNestRenderBins(false);
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stateset->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
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stateset->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
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stateset->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
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osgParticle::Particle& particleTemplate = mRainParticleSystem->getDefaultParticleTemplate();
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particleTemplate.setSizeRange(osgParticle::rangef(5.f, 15.f));
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particleTemplate.setAlphaRange(osgParticle::rangef(1.f, 1.f));
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particleTemplate.setLifeTime(1);
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osg::ref_ptr<osgParticle::ModularEmitter> emitter (new osgParticle::ModularEmitter);
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emitter->setParticleSystem(mRainParticleSystem);
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osg::ref_ptr<osgParticle::BoxPlacer> placer (new osgParticle::BoxPlacer);
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placer->setXRange(-300, 300); // Rain_Diameter
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placer->setYRange(-300, 300);
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placer->setZRange(300, 300);
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emitter->setPlacer(placer);
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osg::ref_ptr<osgParticle::ConstantRateCounter> counter (new osgParticle::ConstantRateCounter);
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counter->setNumberOfParticlesPerSecondToCreate(600.0);
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emitter->setCounter(counter);
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osg::ref_ptr<RainShooter> shooter (new RainShooter);
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mRainShooter = shooter;
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emitter->setShooter(shooter);
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osg::ref_ptr<osgParticle::ParticleSystemUpdater> updater (new osgParticle::ParticleSystemUpdater);
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updater->addParticleSystem(mRainParticleSystem);
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osg::ref_ptr<osg::Geode> geode (new osg::Geode);
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geode->addDrawable(mRainParticleSystem);
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mRainNode->addChild(emitter);
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mRainNode->addChild(geode);
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mRainNode->addChild(updater);
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mRootNode->addChild(mRainNode);
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}
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void SkyManager::destroyRain()
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{
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if (!mRainNode)
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return;
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mRootNode->removeChild(mRainNode);
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mRainNode = NULL;
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mRainParticleSystem = NULL;
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mRainShooter = NULL;
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}
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SkyManager::~SkyManager()
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{
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clearRain();
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if (mRootNode)
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{
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mRootNode->getParent(0)->removeChild(mRootNode);
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@ -664,14 +774,6 @@ int SkyManager::getSecundaPhase() const
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return mSecunda->getPhaseInt();
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}
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void SkyManager::clearRain()
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{
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}
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void SkyManager::updateRain(float dt)
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{
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}
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void SkyManager::update(float duration)
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{
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if (!mEnabled) return;
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@ -688,8 +790,6 @@ void SkyManager::update(float duration)
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else
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mCloudNode->setAttitude(osg::Quat());
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updateRain(duration);
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// UV Scroll the clouds
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mCloudAnimationTimer += duration * mCloudSpeed * 0.003;
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mCloudUpdater->setAnimationTimer(mCloudAnimationTimer);
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@ -736,9 +836,6 @@ void SkyManager::setEnabled(bool enabled)
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if (enabled && !mCreated)
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create();
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if (!enabled)
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clearRain();
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mRootNode->setNodeMask(enabled ? Mask_Sky : 0);
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mEnabled = enabled;
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@ -750,14 +847,38 @@ void SkyManager::setMoonColour (bool red)
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mSecunda->setColor(red ? mMoonScriptColor : osg::Vec4f(1,1,1,1));
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}
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void SkyManager::updateRainParameters()
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{
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if (mRainShooter)
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{
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float angle = mWindSpeed/2.f * osg::PI/4;
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mRainShooter->setVelocity(osg::Vec3f(0, mRainSpeed * mWindSpeed / 2.f, -mRainSpeed));
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mRainShooter->setAngle(angle);
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}
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}
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void SkyManager::setWeather(const MWWorld::WeatherResult& weather)
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{
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if (!mCreated) return;
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mRainEffect = weather.mRainEffect;
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mRainEnabled = !mRainEffect.empty();
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if (mRainEffect != weather.mRainEffect)
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{
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mRainEffect = weather.mRainEffect;
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if (!mRainEffect.empty())
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{
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createRain();
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}
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else
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{
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destroyRain();
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}
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}
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mRainFrequency = weather.mRainFrequency;
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mRainSpeed = weather.mRainSpeed;
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mWindSpeed = weather.mWindSpeed;
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updateRainParameters();
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mIsStorm = weather.mIsStorm;
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if (mCurrentParticleEffect != weather.mParticleEffect)
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@ -12,6 +12,11 @@ namespace osg
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class Material;
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}
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namespace osgParticle
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{
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class ParticleSystem;
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}
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namespace Resource
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{
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class SceneManager;
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@ -24,6 +29,7 @@ namespace MWRender
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class CloudUpdater;
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class Sun;
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class Moon;
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class RainShooter;
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class SkyManager
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{
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@ -87,8 +93,9 @@ namespace MWRender
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void create();
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///< no need to call this, automatically done on first enable()
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void updateRain(float dt);
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void clearRain();
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void createRain();
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void destroyRain();
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void updateRainParameters();
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Resource::SceneManager* mSceneManager;
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@ -116,6 +123,10 @@ namespace MWRender
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std::auto_ptr<Moon> mMasser;
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std::auto_ptr<Moon> mSecunda;
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osg::ref_ptr<osg::Group> mRainNode;
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osg::ref_ptr<osgParticle::ParticleSystem> mRainParticleSystem;
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osg::ref_ptr<RainShooter> mRainShooter;
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bool mCreated;
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bool mIsStorm;
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@ -151,6 +162,7 @@ namespace MWRender
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std::string mRainEffect;
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float mRainSpeed;
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float mRainFrequency;
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float mWindSpeed;
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bool mEnabled;
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bool mSunEnabled;
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