/**************************************************************************** Copyright (c) 2011-2013,WebJet Business Division,CYOU http://www.genesis-3d.com.cn Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ****************************************************************************/ #include "stdneb.h" #include "particles/particleemitter.h" #include "particles/particle.h" #include "particles/particlesystem.h" namespace Particles { using namespace Math; __ImplementClass(Particles::ParticleEmitter, 'PARE', Core::RefCounted) GPtr ParticleEmitter::NullEmitter(NULL); //------------------------------------------------------------------------ ParticleEmitter::ParticleEmitter() : mParentSystem(NULL) , mName("Emitter") , mIsActive(false) , mEnable(true) , mRemainder(0) , mDirection(ConstDefine::DEFAULT_EMITTER_DIRECTION) , mMinOrientation(ConstDefine::QUATERNION_IDENTITY) , mMaxOrientation(ConstDefine::QUATERNION_IDENTITY) , mMinMass(ConstDefine::DEFAULT_MASS) , mMaxMass(ConstDefine::DEFAULT_MASS) , mMinColor(ConstDefine::DEFAULT_MIN_COLOR) , mMaxColor(ConstDefine::DEFAULT_MAX_COLOR) , mMinTexCoordIndex(ConstDefine::DEFAULT_TEXCOORD_INDEX) , mMaxTexCoordIndex(ConstDefine::DEFAULT_TEXCOORD_INDEX) , mMinSize(ConstDefine::DEFAULT_SIZE) , mMaxSize(ConstDefine::DEFAULT_SIZE) , mInitFromType(EFT_POINT) , mIsNormalDir(false) , mIsAxialSize(false) , mIsAxialVelocity(true) , mNormalSpeed(1.0f) ,mShapeVisible(true) { mRandomSeed = GenerateRandomSeed( this ); mUpVector = Perpendicular(mDirection); mUpVector.normalise(); mMinMaxRate.SetScalar(25.0f); mMinMaxSizeX.SetScalar(3.0f); mMinMaxSizeY.SetScalar(3.0f); mMinMaxSizeZ.SetScalar(3.0f); mMinMaxLiveTime.SetScalar(1.0f); mMinMaxVelocityX.SetCurveState(Math::MinMaxCurve::RandomScalar); mMinMaxVelocityY.SetCurveState(Math::MinMaxCurve::RandomScalar); mMinMaxVelocityZ.SetCurveState(Math::MinMaxCurve::RandomScalar); mMinMaxVelocityY.SetRandomScalar(Math::float2(5.0f,10.0f)); mMinMaxVelocityX.SetRandomScalar(Math::float2(-3.0f,3.0f)); mMinMaxVelocityZ.SetRandomScalar(Math::float2(-3.0f,3.0f)); mMinMaxColorR.SetRandomScalar(Math::float2(0.5f,0.5f)); mMinMaxColorG.SetRandomScalar(Math::float2(0.5f,0.5f)); mMinMaxColorB.SetRandomScalar(Math::float2(0.5f,0.5f)); mMinMaxColorA.SetRandomScalar(Math::float2(1.0f,1.0f)); Util::Array _list; Util::Array _type; _list.Append(Math::float2(0,1)); _type.Append(true); _type.Append(true); mMinMaxColorA.SetCurveFromArray(_list,_type,_list,_type); _list.Clear(); _list.Append(Math::float2(0,0.5)); mMinMaxColorB.SetCurveFromArray(_list,_type,_list,_type); mMinMaxColorG.SetCurveFromArray(_list,_type,_list,_type); mMinMaxColorR.SetCurveFromArray(_list,_type,_list,_type); } //------------------------------------------------------------------------ ParticleEmitter::~ParticleEmitter() { } //------------------------------------------------------------------------ void ParticleEmitter::SetEnable(bool enable) { if ( mEnable != enable ) { mEnable = enable; } } //------------------------------------------------------------------------ SizeT ParticleEmitter::CalculateRequestedParticles(Timing::Time mCurFrameTime) { return _calculateRequestedParticles(mCurFrameTime); } //------------------------------------------------------------------------ SizeT ParticleEmitter::_calculateRequestedParticles( Timing::Time timeElapsed ) { SizeT requestedParticles = 0; Timing::Time delayTime = mParentSystem->GetCorrectTime(); float fPreTime = 0.0f; if ( mEnable ) { float percent = (float)mParentSystem->GetCurEmitTime(); Math::scalar rate = mMinMaxRate.Calculate(percent,Math::n_rand(0.0f,1.0f)); mRemainder += rate * (Math::scalar)timeElapsed; requestedParticles = (SizeT)mRemainder; mRemainder -= requestedParticles; } return requestedParticles; } //------------------------------------------------------------------------ void ParticleEmitter::_onActivate(void) { n_assert( !mIsActive ); mIsActive = true; } //------------------------------------------------------------------------ void ParticleEmitter::_onDeactivate(void) { n_assert( mIsActive ); mIsActive = false; } //------------------------------------------------------------------------ void ParticleEmitter::_emit(Particle* particle,float percent) { mPersent = percent; n_assert( particle ); _initParticlePosition(particle); _initParticleDirection(particle); _initParticleVelocity(particle); _initParticleOrientation(particle); _initParticleMass(particle); _initParticleColour(particle); _initParticleTextureCoords(particle); _initParticleTimeToLive(particle); _initParticleDimensions(particle); _initParticleRotation(particle); particle->mRandom0 = Math::n_rand(0, 1); particle->mRandom1 = Math::n_rand(0, 1); particle->mRandom2 = Math::n_rand(0, 1); particle->mRandom3 = Math::n_rand(0, 1); } //------------------------------------------------------------------------ void ParticleEmitter::_initParticlePosition(Particle* particle) { n_assert( particle ); particle->mPosition = Math::float3(0.0f,0.0f,0.0f); particle->mOrbitPositions.Clear(); if(mParentSystem->IsMoveWorldCoord()) { particle->mPosition = mParentSystem->GetDerivedPosition(); } } //------------------------------------------------------------------------ void ParticleEmitter::_initParticleDirection(Particle* particle) { } //------------------------------------------------------------------------ void ParticleEmitter::_initParticleVelocity(Particle* particle) { n_assert( particle ); float veloX = mMinMaxVelocityX.Calculate(mPersent,Math::n_rand(0.0f,1.0f)); if (mIsAxialVelocity) { float veloY = mMinMaxVelocityY.Calculate(mPersent,Math::n_rand(0.0f,1.0f)); float veloZ = mMinMaxVelocityZ.Calculate(mPersent,Math::n_rand(0.0f,1.0f)); particle->mDirection = Math::float3(veloX, veloY, veloZ); } else { particle->mDirection = veloX; } if (mParentSystem->IsMoveWorldCoord()) { particle->mDirection = particle->mDirection.transformVector(mParentSystem->GetWorldMatrix()); } } //------------------------------------------------------------------------ void ParticleEmitter::_initParticleOrientation(Particle* particle) { n_assert( particle ); if ( mMinOrientation != mMaxOrientation ) { particle->mOrientation = Math::quaternion::slerp( mMinOrientation, mMaxOrientation, Util::RandomNumberTable::Rand( IncreaseRandomSeed() ) ); } else { particle->mOrientation = mMinOrientation; } } //------------------------------------------------------------------------ void ParticleEmitter::_initParticleMass(Particle* particle) { n_assert( particle ); if ( mMinMass != mMaxMass ) { particle->mMass = Util::RandomNumberTable::Rand( IncreaseRandomSeed(), mMinMass, mMaxMass ); } else { particle->mMass = mMinMass; } } //------------------------------------------------------------------------ void ParticleEmitter::_initParticleColour(Particle* particle) { n_assert( particle ); float colorRand = Math::n_rand(0,1); ubyte colorR = Math::n_scalartoByte(mMinMaxColorR.Calculate(mPersent,colorRand)); ubyte colorG = Math::n_scalartoByte(mMinMaxColorG.Calculate(mPersent,colorRand)); ubyte colorB = Math::n_scalartoByte(mMinMaxColorB.Calculate(mPersent,colorRand)) ; ubyte colorA = Math::n_scalartoByte(mMinMaxColorA.Calculate(mPersent,colorRand)); particle->mColor = Math::Color32(colorR, colorG, colorB, colorA ); } //------------------------------------------------------------------------ void ParticleEmitter::_initParticleTextureCoords(Particle* particle) { n_assert( particle ); if ( mMinTexCoordIndex != mMaxTexCoordIndex ) { float scale = Util::RandomNumberTable::Rand( IncreaseRandomSeed() ); particle->mTexCoordIndex = IndexT( mMinTexCoordIndex + scale * ( mMaxTexCoordIndex - mMinTexCoordIndex ) ); } else { particle->mTexCoordIndex = mMinTexCoordIndex; } } //------------------------------------------------------------------------ void ParticleEmitter::_initParticleTimeToLive(Particle* particle) { n_assert( particle ); particle->mTotalTimeToLive = mMinMaxLiveTime.Calculate(mPersent,Math::n_rand(0.0f,1.0f)); particle->mTimeToLive = particle->mTotalTimeToLive; } //------------------------------------------------------------------------ void ParticleEmitter::_initParticleDimensions(Particle* particle) { n_assert(particle); float sizeX = mMinMaxSizeX.Calculate(mPersent,Math::n_rand(0.0f,1.0f)); if (mIsAxialSize) { float sizeY = mMinMaxSizeY.Calculate(mPersent,Math::n_rand(0.0f,1.0f)); float sizeZ = mMinMaxSizeZ.Calculate(mPersent,Math::n_rand(0.0f,1.0f)); particle->mSize = Math::float3(sizeX, sizeY, sizeZ); } else { particle->mSize = Math::float3(sizeX, sizeX, sizeX); } particle->mInitSize = particle->mSize; } //------------------------------------------------------------------------ void ParticleEmitter::_initParticleRotation(Particle* particle) { n_assert(particle); float zRotation = mMinMaxInitRotaion.Calculate( mPersent,Math::n_rand(0.0f,1.0f)); particle->mZRotation = zRotation * N_PI / 180; } //-------------------------------------------------------------------------------- void ParticleEmitter::_switchParticleType(bool _isMobile) { if(!_isMobile) return; _curveToConst(mMinMaxRate); _curveToConst(mMinMaxVelocityX); _curveToConst(mMinMaxVelocityY); _curveToConst(mMinMaxVelocityZ); _curveToConst(mMinMaxSizeX); _curveToConst(mMinMaxLiveTime); } //-------------------------------------------------------------------------------- Math::MinMaxCurve* ParticleEmitter::getMinMaxCurve(ParticleCurveType pct) { switch(pct) { case Emitter_Rate: return &mMinMaxRate; case Emitter_VelocityX: return &mMinMaxVelocityX; case Emitter_VelocityY: return &mMinMaxVelocityY; case Emitter_VelocityZ: return &mMinMaxVelocityZ; case Emitter_ColorR: return &mMinMaxColorR; case Emitter_ColorG: return &mMinMaxColorG; case Emitter_ColorB: return &mMinMaxColorB; case Emitter_ColorA: return &mMinMaxColorA; case Emitter_Livetime: return &mMinMaxLiveTime; case Emitter_SizeX: return &mMinMaxSizeX; case Emitter_SizeY: return &mMinMaxSizeY; case Emitter_SizeZ: return &mMinMaxSizeZ; case Emitter_RotSpeed: return &mMinMaxRotationSpeed; case Emitter_InitRot: return &mMinMaxInitRotaion; default: return NULL; } } }