genesis-3d_engine/Engine/addons/particles/particleemitter.cc

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/****************************************************************************
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> 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<Math::float2> _list;
Util::Array<bool> _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;
}
}
}