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Merge pull request #460 from Azaezel/Particles

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Particles
This commit is contained in:
SilentMike 2013-08-19 08:22:04 -07:00
commit f6efe41728
4 changed files with 106 additions and 5 deletions
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13
Engine/source/T3D/fx/particleEmitter.cpp
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@ -118,6 +118,7 @@ ParticleEmitterData::ParticleEmitterData()
ejectionVelocity = 2.0f; // From 1.0 - 3.0 meters per sec
velocityVariance = 1.0f;
ejectionOffset = sgDefaultEjectionOffset; // ejection from the emitter point
ejectionOffsetVariance = 0.0f;
thetaMin = 0.0f; // All heights
thetaMax = 90.0f;
@ -199,6 +200,9 @@ void ParticleEmitterData::initPersistFields()
addFieldV( "ejectionOffset", TYPEID< F32 >(), Offset(ejectionOffset, ParticleEmitterData), &ejectionFValidator,
"Distance along ejection Z axis from which to eject particles." );
addFieldV( "ejectionOffsetVariance", TYPEID< F32 >(), Offset(ejectionOffsetVariance, ParticleEmitterData), &ejectionFValidator,
"Distance Padding along ejection Z axis from which to eject particles." );
addFieldV( "thetaMin", TYPEID< F32 >(), Offset(thetaMin, ParticleEmitterData), &thetaFValidator,
"Minimum angle, from the horizontal plane, to eject from." );
@ -316,6 +320,8 @@ void ParticleEmitterData::packData(BitStream* stream)
stream->writeInt((S32)(velocityVariance * 100), 14);
if( stream->writeFlag( ejectionOffset != sgDefaultEjectionOffset ) )
stream->writeInt((S32)(ejectionOffset * 100), 16);
if( stream->writeFlag( ejectionOffsetVariance != 0.0f ) )
stream->writeInt((S32)(ejectionOffsetVariance * 100), 16);
stream->writeRangedU32((U32)thetaMin, 0, 180);
stream->writeRangedU32((U32)thetaMax, 0, 180);
if( stream->writeFlag( phiReferenceVel != sgDefaultPhiReferenceVel ) )
@ -368,7 +374,10 @@ void ParticleEmitterData::unpackData(BitStream* stream)
ejectionOffset = stream->readInt(16) / 100.0f;
else
ejectionOffset = sgDefaultEjectionOffset;
if( stream->readFlag() )
ejectionOffsetVariance = stream->readInt(16) / 100.0f;
else
ejectionOffsetVariance = 0.0f;
thetaMin = (F32)stream->readRangedU32(0, 180);
thetaMax = (F32)stream->readRangedU32(0, 180);
if( stream->readFlag() )
@ -1287,7 +1296,7 @@ void ParticleEmitter::addParticle(const Point3F& pos,
F32 initialVel = mDataBlock->ejectionVelocity;
initialVel += (mDataBlock->velocityVariance * 2.0f * gRandGen.randF()) - mDataBlock->velocityVariance;
pNew->pos = pos + (ejectionAxis * mDataBlock->ejectionOffset);
pNew->pos = pos_start + (ejectionAxis * (mDataBlock->ejectionOffset + mDataBlock->ejectionOffsetVariance* gRandGen.randF()) );
pNew->vel = ejectionAxis * initialVel;
pNew->orientDir = ejectionAxis;
pNew->acc.set(0, 0, 0);

2
Engine/source/T3D/fx/particleEmitter.h
View file

@ -73,7 +73,7 @@ class ParticleEmitterData : public GameBaseData
F32 ejectionVelocity; ///< Ejection velocity
F32 velocityVariance; ///< Variance for velocity between 0 and n
F32 ejectionOffset; ///< Z offset from emitter point to eject from
F32 ejectionOffsetVariance; ///< Z offset Variance from emitter point to eject
F32 thetaMin; ///< Minimum angle, from the horizontal plane, to eject from
F32 thetaMax; ///< Maximum angle, from the horizontal plane, to eject from