122 lines
4.1 KiB
Ucode
122 lines
4.1 KiB
Ucode
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/**
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* ParticleModuleTrailSource
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*
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* This module implements a single source for a Trail emitter.
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*
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* Copyright 1998-2013 Epic Games, Inc. All Rights Reserved.
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*/
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class ParticleModuleTrailSource extends ParticleModuleTrailBase
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native(Particle)
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editinlinenew
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hidecategories(Object);
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enum ETrail2SourceMethod
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{
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/** Default - use the emitter position.
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* This is the fallback for when other modes can't be resolved.
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*/
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PET2SRCM_Default,
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/** Particle - use the particles from a given emitter in the system.
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* The name of the emitter should be set in SourceName.
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*/
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PET2SRCM_Particle,
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/** Actor - use the actor as the source.
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* The name of the actor should be set in SourceName.
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*/
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PET2SRCM_Actor
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};
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/** The source method for the trail. */
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var(Source) ETrail2SourceMethod SourceMethod;
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/** The name of the source - either the emitter or Actor. */
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var(Source) name SourceName;
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/** The strength of the tangent from the source point for each Trail. */
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var(Source) rawdistributionfloat SourceStrength;
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/** Whether to lock the source to the life of the particle. */
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var(Source) bool bLockSourceStength;
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/**
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* SourceOffsetCount
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* The number of source offsets that can be expected to be found on the instance.
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* These must be named
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* TrailSourceOffset#
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*/
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var(Source) INT SourceOffsetCount;
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/**
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* Default offsets from the source(s).
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* If there are < SourceOffsetCount slots, the grabbing of values will simply wrap.
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*/
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var(Source) editfixedsize array<vector> SourceOffsetDefaults;
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/** Particle selection method, when using the SourceMethod of Particle. */
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var(Source) EParticleSourceSelectionMethod SelectionMethod;
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/** Interhit particle rotation - only valid for SourceMethod of PET2SRCM_Particle. */
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var(Source) bool bInheritRotation;
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cpptext
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{
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virtual void Spawn(FParticleEmitterInstance* Owner, INT Offset, FLOAT SpawnTime);
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virtual UINT RequiredBytes(FParticleEmitterInstance* Owner = NULL);
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virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent);
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virtual void AutoPopulateInstanceProperties(UParticleSystemComponent* PSysComp);
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void GetDataPointers(FParticleTrail2EmitterInstance* TrailInst,
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const BYTE* ParticleBase, INT& CurrentOffset,
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FTrailParticleSourcePayloadData*& ParticleSource);
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void GetDataPointerOffsets(FParticleTrail2EmitterInstance* TrailInst,
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const BYTE* ParticleBase, INT& CurrentOffset,
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INT& ParticleSourceOffset);
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UBOOL ResolveSourceData(FParticleTrail2EmitterInstance* TrailInst,
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const BYTE* ParticleBase, FTrail2TypeDataPayload* TrailData,
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INT& CurrentOffset, INT ParticleIndex, UBOOL bSpawning);
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UBOOL ResolveSourcePoint(FParticleTrail2EmitterInstance* TrailInst,
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FBaseParticle& Particle, FTrail2TypeDataPayload& TrailData,
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FVector& Position, FVector& Tangent);
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FVector ResolveSourceOffset(FParticleTrail2EmitterInstance* TrailInst,
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FBaseParticle& Particle, FTrail2TypeDataPayload& TrailData);
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/**
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* Retrieve the SourceOffset for the given trail index.
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* Currently, this is only intended for use by Ribbon emitters
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*
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* @param InTrailIdx The index of the trail whose offset is being retrieved
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* @param InEmitterInst The EmitterInstance requesting the SourceOffset
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* @param OutSourceOffset The source offset for the trail of interest
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*
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* @return UBOOL TRUE if successful, FALSE if not (including no offset)
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*/
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UBOOL ResolveSourceOffset(INT InTrailIdx, FParticleEmitterInstance* InEmitterInst, FVector& OutSourceOffset);
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/**
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* Retrieve the ParticleSysParams associated with this module.
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*
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* @param ParticleSysParamList The list of FParticleSysParams to add to
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*/
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virtual void GetParticleSysParamsUtilized(TArray<FString>& ParticleSysParamList);
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}
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defaultproperties
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{
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SourceMethod=PET2SRCM_Default
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SourceName="None"
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Begin Object Class=DistributionFloatConstant Name=DistributionSourceStrength
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Constant=100.0
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End Object
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SourceStrength=(Distribution=DistributionSourceStrength)
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SelectionMethod=EPSSM_Sequential
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bInheritRotation=false
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}
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