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  3. UParticleSystemComponent

UParticleSystemComponent

A particle emitter.

API > API/Runtime > API/Runtime/Engine

A particle emitter.

   
Name UParticleSystemComponent
Type class
Header File /Engine/Source/Runtime/Engine/Classes/Particles/ParticleSystemComponent.h
Include Path #include "Particles/ParticleSystemComponent.h"

Syntax

UCLASS (ClassGroup=(Rendering), HideCategories=Object, HideCategories=Physics,  
       HideCategories=Collision, ShowCategories=Trigger, EditInlineNew,  
       Meta=(BlueprintSpawnableComponent, DisplayName="Cascade Particle System Component"),  
       MinimalAPI)  
class UParticleSystemComponent : public UFXSystemComponent

Inheritance Hierarchy

Implements Interfaces

Derived Classes

Constructors

Name Remarks Include Path Unreal Specifiers

UParticleSystemComponent ( const FObjectInitializer& ObjectInitializer
)

   Particles/ParticleSystemComponent.h  

Classes

Name Remarks
FInstanceOwner  

Enums

Public

Name Remarks
EForceAsyncWorkCompletion  

Typedefs

Name Type Remarks Include Path
TrailEmitterArray TArray< struct FParticleAnimTrailEmitterInstance *, TInlineAllocator< 8 > > Array of trail emitters. Particles/ParticleSystemComponent.h

Constants

Name Type Remarks Include Path
OnSystemPreActivationChange FOnSystemPreActivationChange Static delegate called for all systems on an activation change. Particles/ParticleSystemComponent.h

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
AccumLODDistanceCheckTime float LOD updating... Particles/ParticleSystemComponent.h  
AccumTickTime float Used to accumulate total tick time to determine whether system can be skipped ticking if not visible. Particles/ParticleSystemComponent.h  
AutoAttachLocationRule EAttachmentRule Options for how we handle our location when we attach to the AutoAttachParent, if bAutoManageAttachment is true. Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=Attachment
  • Meta=(EditCondition="bAutoManageAttachment")
AutoAttachParent TWeakObjectPtr< USceneComponent > Component we automatically attach to when activated, if bAutoManageAttachment is true. Particles/ParticleSystemComponent.h
  • VisibleInstanceOnly
  • BlueprintReadWrite
  • Category=Attachment
  • Meta=(EditCondition="bAutoManageAttachment")
AutoAttachRotationRule EAttachmentRule Options for how we handle our rotation when we attach to the AutoAttachParent, if bAutoManageAttachment is true. Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=Attachment
  • Meta=(EditCondition="bAutoManageAttachment")
AutoAttachScaleRule EAttachmentRule Options for how we handle our scale when we attach to the AutoAttachParent, if bAutoManageAttachment is true. Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=Attachment
  • Meta=(EditCondition="bAutoManageAttachment")
AutoAttachSocketName FName Socket we automatically attach to on the AutoAttachParent, if bAutoManageAttachment is true. Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=Attachment
  • Meta=(EditCondition="bAutoManageAttachment")
bAllowRecycling uint8 If true, this Particle System will be available for recycling after it has completed. Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • AdvancedDisplay
  • Category=Particles
bAutoAttachWeldSimulatedBodies uint8 Option for how we handle bWeldSimulatedBodies when we attach to the AutoAttachParent, if bAutoManageAttachment is true. Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=Attachment
  • Meta=(EditCondition="bAutoManageAttachment")
bAutoDestroy uint8   Particles/ParticleSystemComponent.h  
bAutoManageAttachment uint8 True if we should automatically attach to AutoAttachParent when activated, and detach from our parent when completed. Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadOnly
  • Category=Attachment
bDeactivateTriggered uint8 If true, someone has requested this component deactivate. Particles/ParticleSystemComponent.h  
bForcedInActive uint8 This is set when any of our "don't tick me" timeout values have fired Particles/ParticleSystemComponent.h  
bForceLODUpdateFromRenderer uint8 If true, force an LOD update from the renderer. Particles/ParticleSystemComponent.h  
bHasBeenActivated uint8 This flag will be set the first time the PSysComp is activated... Particles/ParticleSystemComponent.h  
bIsDuringRegister uint8   Particles/ParticleSystemComponent.h  
bIsManagingSignificance uint8 If this component is having it's significance managed by gameplay code. Particles/ParticleSystemComponent.h  
bIsViewRelevanceDirty uint8 If true, the ViewRelevanceFlags are dirty and should be recached Particles/ParticleSystemComponent.h  
bJustRegistered uint8 Indicates that the component has not been ticked since being registered. Particles/ParticleSystemComponent.h  
bOldPositionValid bool   Particles/ParticleSystemComponent.h
  • Transient
  • DuplicateTransient
bOverrideLODMethod uint8 Indicates that the component's LODMethod overrides the Template's Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=LOD
bResetOnDetach uint8   Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=Particles
bResetTriggered uint8 If true, someone has requested this component reset. Particles/ParticleSystemComponent.h  
bSkipUpdateDynamicDataDuringTick uint8 Flag indicating that dynamic updating of render data should NOT occur during Tick. Particles/ParticleSystemComponent.h  
bSuppressSpawning uint8   Particles/ParticleSystemComponent.h  
bUpdateOnDedicatedServer uint8 Whether to update the particle system on dedicated servers Particles/ParticleSystemComponent.h  
BurstEvents TArray< struct FParticleEventBurstData > The Burst events that occurred in this PSysComp. Particles/ParticleSystemComponent.h  
bWarmingUp uint8   Particles/ParticleSystemComponent.h  
bWasActive uint8 True if this was active before being unregistered or otherwise reset, if so reactivate it Particles/ParticleSystemComponent.h  
bWasCompleted uint8   Particles/ParticleSystemComponent.h  
bWasDeactivated uint8   Particles/ParticleSystemComponent.h  
bWasManagingSignificance uint8 If this component was previously having it's significance managed by gameplay code. Particles/ParticleSystemComponent.h  
CachedViewRelevanceFlags TArray< FMaterialRelevance > The view relevance flags for each LODLevel. Particles/ParticleSystemComponent.h  
CollisionEvents TArray< struct FParticleEventCollideData > The Collision events that occurred in this PSysComp. Particles/ParticleSystemComponent.h  
CustomTimeDilation float Scales DeltaTime in UParticleSystemComponent::Tick(...) Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=Particles
DeathEvents TArray< struct FParticleEventDeathData > The Death events that occurred in this PSysComp. Particles/ParticleSystemComponent.h  
EditorDetailMode int32 Used for applying Cascade's detail mode setting to in-level particle systems Particles/ParticleSystemComponent.h  
EditorLODLevel int32 INTERNAL. Used by the editor to set the LODLevel Particles/ParticleSystemComponent.h  
EmitterDelay float This is created at start up and then added to each emitter Particles/ParticleSystemComponent.h  
EmitterInstances TArray< struct FParticleEmitterInstance * >   Particles/ParticleSystemComponent.h  
EmitterMaterials TArray< TObjectPtr< class UMaterialInterface > >   Particles/ParticleSystemComponent.h
  • Transient
  • DuplicateTransient
FXSystem FFXSystem *   Particles/ParticleSystemComponent.h  
InstanceOwner TUniquePtr< FInstanceOwner >   Particles/ParticleSystemComponent.h  
InstanceParameters TArray< struct FParticleSysParam > Array holding name instance parameters for this ParticleSystemComponent. Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=Particles
KismetEvents TArray< struct FParticleEventKismetData > The Kismet events that occurred for this PSysComp. Particles/ParticleSystemComponent.h  
LastSignificantTime float Time in seconds since we were last considered significant. Particles/ParticleSystemComponent.h  
LODMethod TEnumAsByte< enum ParticleSystemLODMethod > The method of LOD level determination to utilize for this particle system Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=LOD
MaxTimeBeforeForceUpdateTransform float Time between forced UpdateTransforms for systems that use dynamically calculated bounds, Which is effectively how often the bounds are shrunk. Particles/ParticleSystemComponent.h  
OldPosition FVector   Particles/ParticleSystemComponent.h
  • Transient
  • DuplicateTransient
OnParticleBurst FParticleBurstSignature   Particles/ParticleSystemComponent.h
  • BlueprintAssignable
OnParticleCollide FParticleCollisionSignature   Particles/ParticleSystemComponent.h
  • BlueprintAssignable
OnParticleDeath FParticleDeathSignature   Particles/ParticleSystemComponent.h
  • BlueprintAssignable
OnParticleSpawn FParticleSpawnSignature   Particles/ParticleSystemComponent.h
  • BlueprintAssignable
OnSystemFinished FOnSystemFinished Called when the particle system is done. Particles/ParticleSystemComponent.h
  • BlueprintAssignable
PartSysVelocity FVector   Particles/ParticleSystemComponent.h
  • Transient
  • DuplicateTransient
PoolingMethod EPSCPoolMethod If this PSC is pooling. Particles/ParticleSystemComponent.h  
RandomStream FRandomStream Stream of random values to use with this component Particles/ParticleSystemComponent.h  
ReleaseResourcesFence FRenderCommandFence * Command fence used to shut down properly Particles/ParticleSystemComponent.h  
ReplayClipIDNumber int32 Clip ID number we're either playing back or capturing to, depending on the value of ReplayState. Particles/ParticleSystemComponent.h  
ReplayClips TArray< TObjectPtr< class UParticleSystemReplay > > Array of replay clips for this particle system component. Particles/ParticleSystemComponent.h  
ReplayFrameIndex int32 The current replay frame for playback Particles/ParticleSystemComponent.h  
ReplayState TEnumAsByte< enum ParticleReplayState > Current particle 'replay state'. Particles/ParticleSystemComponent.h  
RequiredSignificance EParticleSignificanceLevel The significance this component requires of it's emitters for them to be enabled. Particles/ParticleSystemComponent.h  
SecondsBeforeInactive float Number of seconds of emitter not being rendered that need to pass before it no longer gets ticked/ becomes inactive. Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadWrite
  • Category=Particles
SkelMeshComponents TArray< TObjectPtr< class USkeletalMeshComponent > > The skeletal mesh components used with the socket location module. Particles/ParticleSystemComponent.h
  • Transient
  • DuplicateTransient
SpawnEvents TArray< struct FParticleEventSpawnData > The Spawn events that occurred in this PSysComp. Particles/ParticleSystemComponent.h  
Template TObjectPtr< class UParticleSystem >   Particles/ParticleSystemComponent.h
  • EditAnywhere
  • BlueprintReadOnly
  • Category=Particles
WarmupTickRate float   Particles/ParticleSystemComponent.h
  • Transient
  • DuplicateTransient
WarmupTime float   Particles/ParticleSystemComponent.h
  • Transient
  • DuplicateTransient

Protected

Name Type Remarks Include Path Unreal Specifiers
AsyncBounds FBoxSphereBounds Cached copy of bounds Particles/ParticleSystemComponent.h  
AsyncComponentToWorld FTransform Cached copy of the transform for async work Particles/ParticleSystemComponent.h  
AsyncInstanceParameters TArray< struct FParticleSysParam > Cached copy of the instance params Particles/ParticleSystemComponent.h  
AsyncPartSysVelocity FVector Cached copy of PartSysVelocity Particles/ParticleSystemComponent.h  
AsyncWork FGraphEventRef Task ref for parallel portion Particles/ParticleSystemComponent.h  
bAsyncDataCopyIsValid uint8 Is AsyncComponentToWorld etc valid? Particles/ParticleSystemComponent.h  
bAsyncWorkOutstanding volatile bool If true, it means the Async work is in process and not yet completed. Particles/ParticleSystemComponent.h  
bDidAutoAttach uint8 Did we auto attach during activation? Used to determine if we should restore the relative transform during detachment. Particles/ParticleSystemComponent.h  
bIsElligibleForAsyncTick uint8 If true, this psys can tick in any thread Particles/ParticleSystemComponent.h  
bIsElligibleForAsyncTickComputed uint8 If true, bIsElligibleForAsyncTick is set up Particles/ParticleSystemComponent.h  
bIsTransformDirty uint8 Indicates if the component's transform has been changed and requires updating Particles/ParticleSystemComponent.h  
bNeedsFinalize uint8 If true, it means the ASync work is done and the finalize is not Particles/ParticleSystemComponent.h  
bParallelRenderThreadUpdate uint8   Particles/ParticleSystemComponent.h  
bPendingManagerAdd int32 Flag denoting we are currently in the pending queue to be added to the manager. Particles/ParticleSystemComponent.h  
bPendingManagerRemove int32 Flag denoting we have been unregistered and are awaiting removal from the managers arrays. Particles/ParticleSystemComponent.h  
DeltaTimeTick float Copy of delta time coming into TickComponent Particles/ParticleSystemComponent.h  
LODLevel int32   Particles/ParticleSystemComponent.h  
LWCTile FVector3f LWC tile offset for gpu simulations Particles/ParticleSystemComponent.h  
ManagerHandle int32 Handle into the FParticleSystemWorldManager. Particles/ParticleSystemComponent.h  
NumSignificantEmitters uint32 Number of significant emitters. Particles/ParticleSystemComponent.h  
PlayerLocations TArray< FVector > Player locations computed before kicking off async task. Particles/ParticleSystemComponent.h  
PlayerLODDistanceFactor TArray< float > PlayerLODDistanceFactor computed before kicking off async task. Particles/ParticleSystemComponent.h  
SavedAutoAttachRelativeLocation FVector Saved relative transform before auto attachement. Particles/ParticleSystemComponent.h  
SavedAutoAttachRelativeRotation FRotator   Particles/ParticleSystemComponent.h  
SavedAutoAttachRelativeScale3D FVector   Particles/ParticleSystemComponent.h  
TimeSinceLastForceUpdateTransform float Tracks the time since the last forced UpdateTransform. Particles/ParticleSystemComponent.h  
TimeSinceLastTick uint32 Time in ms since a tick was last performed; used with MinTimeBetweenTicks (on UParticleSystem) to control tick rate Particles/ParticleSystemComponent.h  
TotalActiveParticles int32 Info from async tick Particles/ParticleSystemComponent.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void AutoPopulateInstanceProperties()

 Auto-populate the instance parameters based on contained modules. Particles/ParticleSystemComponent.h  

void BeginTrails ( FName InFirstSocketName,
FName InSecondSocketName,
ETrailWidthMode InWidthMode,
float InWidth
)

 Begins all trail emitters in this component. Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Particles|Trails"

bool CanBeOccluded()

 True if this component can be occluded. Particles/ParticleSystemComponent.h  

bool CanConsiderInvisible()

 True if this component can be considered invisible and potentially culled. Particles/ParticleSystemComponent.h  

bool CanSkipTickDueToVisibility()

   Particles/ParticleSystemComponent.h  

bool CanTickInAnyThread()

 Return true if this psys can tick in any thread Particles/ParticleSystemComponent.h  

void ClearParameter ( FName ParameterName,
enum EParticleSysParamType ParameterType
)

 Clears the specified parameter, returning it to the default value set in the template Particles/ParticleSystemComponent.h  

void Complete()

   Particles/ParticleSystemComponent.h  

void ComputeCanTickInAnyThread()

 Decide if this psys can tick in any thread, and set bIsElligibleForAsyncTick Particles/ParticleSystemComponent.h  

void ComputeTickComponent_Concurrent()

 Possibly parallel phase of TickComponent Particles/ParticleSystemComponent.h  

void ConditionalCacheViewRelevanceFlags ( UParticleSystem* NewTemplate
)

 Cache the view-relevance for each emitter at each LOD level if needed. Particles/ParticleSystemComponent.h  

virtual UMaterialInstanceDynamic * CreateNamedDynamicMaterialInstance ( FName InName,
UMaterialInterface* SourceMaterial
)

 Creates a Dynamic Material Instance for the specified named material override, optionally from the supplied material. Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Rendering|Material"

void DeactivaateNextTick()

   Particles/ParticleSystemComponent.h  

void DeactivateSystem()

 Deactivate the system Particles/ParticleSystemComponent.h  

virtual int32 DetermineLODLevelForLocation ( const FVector& EffectLocation
)

 This will determine which LOD to use based off the specific ParticleSystem passed in and the distance to where that PS is being displayed. Particles/ParticleSystemComponent.h  

virtual bool Editor_CanBeTickManaged()

   Particles/ParticleSystemComponent.h  

void EndTrails()

 Ends all trail emitters in this component. Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Particles|Trails"

void FinalizeTickComponent()

 After the possibly parallel phase of TickComponent, we fire events, etc Particles/ParticleSystemComponent.h  

UParticleSystemReplay * FindReplayClipForIDNumber ( const int32 InClipIDNumber
)

 Finds the replay clip of the specified ID number Particles/ParticleSystemComponent.h  

void ForceAsyncWorkCompletion ( EForceAsyncWorkCompletion Behavior,
bool bDefinitelyGameThread
) const

 If there is async work outstanding, force it to be completed now Particles/ParticleSystemComponent.h  

void ForceAsyncWorkCompletion ( EForceAsyncWorkCompletion Behavior,
bool bDefinitelyGameThread,
bool InSkipUpdateDynamicDataDuringTick
)

 If there is async work outstanding, force it to be completed now Particles/ParticleSystemComponent.h  

void ForceReset()

   Particles/ParticleSystemComponent.h  

void ForceUpdateBounds()

 Force the component to update its bounding box. Particles/ParticleSystemComponent.h  

void GenerateParticleEvent ( const FName InEventName,
const float InEmitterTime,
const FVector InLocation,
const FVector InDirection,
const FVector InVelocity
)

 Record a kismet event. Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual bool GetActorParameter ( const FName InName,
AActor*& OutActor
)

 Retrieve the Actor parameter value for the given name. Particles/ParticleSystemComponent.h  

virtual bool GetAnyVectorParameter ( const FName InName,
FVector& OutVector
)

 Retrieve the Vector parameter value for the given name...also looks for colors and floats and returns those Particles/ParticleSystemComponent.h  

float GetApproxDistanceSquared ( FVector Point
) const

 Returns the approximate distance squared from this component to the passed location. Particles/ParticleSystemComponent.h  

const FBoxSphereBounds & GetAsyncBounds()

   Particles/ParticleSystemComponent.h  

const FTransform & GetAsyncComponentToWorld()

   Particles/ParticleSystemComponent.h  

const TArray< struct FParticleSysParam > & GetAsyncInstanceParameters()

   Particles/ParticleSystemComponent.h  

const FVector & GetAsyncPartSysVelocity()

   Particles/ParticleSystemComponent.h  

virtual bool GetBeamEndPoint ( int32 EmitterIndex,
FVector& OutEndPoint
) const

 Get the beam end point Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual bool GetBeamSourcePoint ( int32 EmitterIndex,
int32 SourceIndex,
FVector& OutSourcePoint
) const

 Get the beam source point Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual bool GetBeamSourceStrength ( int32 EmitterIndex,
int32 SourceIndex,
float& OutSourceStrength
) const

 Get the beam source strength Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual bool GetBeamSourceTangent ( int32 EmitterIndex,
int32 SourceIndex,
FVector& OutTangentPoint
) const

 Get the beam source tangent Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual bool GetBeamTargetPoint ( int32 EmitterIndex,
int32 TargetIndex,
FVector& OutTargetPoint
) const

 Get the beam target point Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual bool GetBeamTargetStrength ( int32 EmitterIndex,
int32 TargetIndex,
float& OutTargetStrength
) const

 Get the beam target strength Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual bool GetBeamTargetTangent ( int32 EmitterIndex,
int32 TargetIndex,
FVector& OutTangentPoint
) const

 Get the beam target tangent Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual bool GetColorParameter ( const FName InName,
FLinearColor& OutColor
)

 Retrieve the Color parameter value for the given name. Particles/ParticleSystemComponent.h  
Decide which detail mode should be applied to this particle system. Particles/ParticleSystemComponent.h  

int32 GetCurrentLODIndex()

   Particles/ParticleSystemComponent.h  

virtual bool GetFloatParameter ( const FName InName,
float& OutFloat
)

 Retrieve the Float parameter value for the given name. Particles/ParticleSystemComponent.h  

virtual int32 GetLODLevel()

 Get the LOD level of the particle system Particles/ParticleSystemComponent.h  

const FVector3f & GetLWCTile()

   Particles/ParticleSystemComponent.h  

int32 GetManagerHandle()

   Particles/ParticleSystemComponent.h  

FPSCTickData & GetManagerTickData()

   Particles/ParticleSystemComponent.h  

virtual bool GetMaterialParameter ( const FName InName,
UMaterialInterface*& OutMaterial
)

 Retrieve the Material parameter value for the given name. Particles/ParticleSystemComponent.h  

virtual UMaterialInterface * GetNamedMaterial ( FName InName
) const

 Returns a named material. If this named material is not found, returns NULL. Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Rendering|Material"

virtual int32 GetNamedMaterialIndex ( FName InName
) const

 Returns the index into the EmitterMaterials array for this named. Particles/ParticleSystemComponent.h  

virtual FName GetNameForMaterial ( UMaterialInterface* InMaterial
) const

 Returns the name associated with the passed in material, returns NAME_None if it is not found Particles/ParticleSystemComponent.h  

int32 GetNumActiveParticles()

 Get the current number of active particles in this system Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual void GetOwnedTrailEmitters ( TrailEmitterArray& OutTrailEmitters,
const void* InOwner,
bool bSetOwner
)

 Fills the passed array with all trail emitters associated with a particular object. Particles/ParticleSystemComponent.h  

FParticlePerfStatsContext GetPerfStatsContext()

   Particles/ParticleSystemComponent.h  

const TArray< FVector > & GetPlayerLocations()

   Particles/ParticleSystemComponent.h  

const TArray< float > & GetPlayerLODDistanceFactor()

   Particles/ParticleSystemComponent.h  

virtual bool GetVectorParameter ( const FName InName,
FVector& OutVector
)

 Retrieve the Vector parameter value for the given name. Particles/ParticleSystemComponent.h  

FParticleSystemWorldManager * GetWorldManager()

   Particles/ParticleSystemComponent.h  

bool HasCompleted()

   Particles/ParticleSystemComponent.h  

void InitializeSystem()

   Particles/ParticleSystemComponent.h  

virtual void InitParticles()

 If particles have not already been initialised (ie. EmitterInstances created) do it now. Particles/ParticleSystemComponent.h  

int32 IsPendingManagerAdd()

   Particles/ParticleSystemComponent.h  

int32 IsPendingManagerRemove()

   Particles/ParticleSystemComponent.h  

bool IsTickManaged()

   Particles/ParticleSystemComponent.h  

void KillParticlesForced()

   Particles/ParticleSystemComponent.h  

void MarshalParamsForAsyncTick()

   Particles/ParticleSystemComponent.h  

void OnSignificanceChanged ( bool bSignificant,
bool bApplyToEmitters,
bool bAsync
)

 When the overall significance for the component is changed. Particles/ParticleSystemComponent.h  

virtual bool ParticleLineCheck ( FHitResult& Hit,
AActor* SourceActor,
const FVector& End,
const FVector& Start,
const FVector& HalfExtent,
const FCollisionObjectQueryParams& ObjectParams
)

 Collision Handling... Particles/ParticleSystemComponent.h  

void ReportEventBurst ( const FName InEventName,
const float InEmitterTime,
const int32 ParticleCount,
const FVector InLocation,
const TArray< class UParticleModuleEventSendToGame* >& InEventData
)

 Record a bursting event. Particles/ParticleSystemComponent.h  

void ReportEventCollision ( const FName InEventName,
const float InEmitterTime,
const FVector InLocation,
const FVector InDirection,
const FVector InVelocity,
const TArray< class UParticleModuleEventSendToGame* >& InEventData,
const float InParticleTime,
const FVector InNormal,
const float InTime,
const int32 InItem,
const FName InBoneName,
UPhysicalMaterial* PhysMat
)

 Record a collision event. Particles/ParticleSystemComponent.h  

void ReportEventDeath ( const FName InEventName,
const float InEmitterTime,
const FVector InLocation,
const FVector InVelocity,
const TArray< class UParticleModuleEventSendToGame* >& InEventData,
const float InParticleTime
)

 Record a death event. Particles/ParticleSystemComponent.h  

void ReportEventSpawn ( const FName InEventName,
const float InEmitterTime,
const FVector InLocation,
const FVector InVelocity,
const TArray< class UParticleModuleEventSendToGame* >& InEventData
)

 Event reporting... Record a spawning event. Particles/ParticleSystemComponent.h  

void ResetBurstLists()

   Particles/ParticleSystemComponent.h  

void ResetNextTick()

   Particles/ParticleSystemComponent.h  

void ResetParticles ( bool bEmptyInstances
)

   Particles/ParticleSystemComponent.h  

void ResetToDefaults()

 Stops the emitter, unregisters the component, and resets the component's properties to the values of its template Particles/ParticleSystemComponent.h  

virtual void RewindEmitterInstances()

   Particles/ParticleSystemComponent.h  

void SetAutoAttachParams ( USceneComponent* Parent,
FName SocketName,
EAttachLocation::Type LocationType
)

 DEPRECATED: Set AutoAttachParent, AutoAttachSocketName, AutoAttachLocationType to the specified parameters. Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"
  • Meta=(DeprecatedFunction, DeprecationMessage="Please use Set Auto Attachment Parameters")

virtual void SetBeamEndPoint ( int32 EmitterIndex,
FVector NewEndPoint
)

 Beam-related script functions. Set the beam end point Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual void SetBeamSourcePoint ( int32 EmitterIndex,
FVector NewSourcePoint,
int32 SourceIndex
)

 Set the beam source point Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual void SetBeamSourceStrength ( int32 EmitterIndex,
float NewSourceStrength,
int32 SourceIndex
)

 Set the beam source strength Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual void SetBeamSourceTangent ( int32 EmitterIndex,
FVector NewTangentPoint,
int32 SourceIndex
)

 Set the beam source tangent Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual void SetBeamTargetPoint ( int32 EmitterIndex,
FVector NewTargetPoint,
int32 TargetIndex
)

 Set the beam target point Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual void SetBeamTargetStrength ( int32 EmitterIndex,
float NewTargetStrength,
int32 TargetIndex
)

 Set the beam target strength Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

virtual void SetBeamTargetTangent ( int32 EmitterIndex,
FVector NewTangentPoint,
int32 TargetIndex
)

 Set the beam target tangent Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

void SetFloatRandParameter ( FName ParameterName,
float Param,
float ParamLow
)

 Set a named random float instance parameter on this ParticleSystemComponent. Particles/ParticleSystemComponent.h  

virtual void SetLODLevel ( int32 InLODLevel
)

 Set the LOD level of the particle system Particles/ParticleSystemComponent.h  

void SetManagerHandle ( int32 InHandle
)

   Particles/ParticleSystemComponent.h  

void SetManagingSignificance ( bool bManageSignificance
)

 Called from game code when the component begins having it's significance managed. Particles/ParticleSystemComponent.h  

void SetMaterialParameter ( FName ParameterName,
UMaterialInterface* Param
)

 Set a named material instance parameter on this ParticleSystemComponent. Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

void SetPendingManagerAdd ( bool bValue
)

   Particles/ParticleSystemComponent.h  

void SetPendingManagerRemove ( bool bValue
)

   Particles/ParticleSystemComponent.h  

void SetRequiredSignificance ( EParticleSignificanceLevel NewRequiredSignificance
)

 Called from game code when the significance required for a component changes. Particles/ParticleSystemComponent.h  

void SetTemplate ( UParticleSystem* NewTemplate
)

 Change the ParticleSystem used by this ParticleSystemComponent Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Components|ParticleSystem"

void SetTrailSourceData ( FName InFirstSocketName,
FName InSecondSocketName,
ETrailWidthMode InWidthMode,
float InWidth
)

 Sets the defining data for all trails in this component. Particles/ParticleSystemComponent.h
  • BlueprintCallable
  • Category="Effects|Particles|Trails"

void SetVectorRandParameter ( FName ParameterName,
const FVector& Param,
const FVector& ParamLow
)

 Set a named random vector instance parameter on this ParticleSystemComponent. Particles/ParticleSystemComponent.h  

void SetVectorUnitRandParameter ( FName ParameterName,
const FVector& Param,
const FVector& ParamLow
)

 Set a named random unit vector instance parameter on this ParticleSystemComponent. Particles/ParticleSystemComponent.h  

bool ShouldBeTickManaged()

   Particles/ParticleSystemComponent.h  

bool ShouldManageSignificance()

 Whether this component should have it's significance managed by game code. Particles/ParticleSystemComponent.h  

void UpdateInstances ( bool bEmptyInstances
)

   Particles/ParticleSystemComponent.h  

Overridden from UFXSystemComponent

Name Remarks Include Path Unreal Specifiers

virtual void ActivateSystem ( bool bFlagAsJustAttached
)

 Activate the system Particles/ParticleSystemComponent.h  

virtual void DeactivateImmediate()

 Forces component to deactivate immediately. Particles/ParticleSystemComponent.h  

virtual uint32 GetApproxMemoryUsage()

 Returns an approximate memory usage value for this component. Particles/ParticleSystemComponent.h  

virtual UFXSystemAsset * GetFXSystemAsset()

 Get the referenced FXSystem asset. Particles/ParticleSystemComponent.h  

virtual void ReleaseToPool ()

 Deactivates this system and releases it to the pool on completion. Particles/ParticleSystemComponent.h  

virtual void SetActorParameter ( FName ParameterName,
AActor* Param
)

 Set a named actor instance parameter on this ParticleSystemComponent. Particles/ParticleSystemComponent.h  

virtual void SetAutoAttachmentParameters ( USceneComponent* Parent,
FName SocketName,
EAttachmentRule LocationRule,
EAttachmentRule RotationRule,
EAttachmentRule ScaleRule
)

 Set AutoAttachParent, AutoAttachSocketName, AutoAttachLocationRule, AutoAttachRotationRule, AutoAttachScaleRule to the specified parameters. Particles/ParticleSystemComponent.h  

virtual void SetBoolParameter ( FName ParameterName,
bool Param
)

 Set a named float instance parameter on this ParticleSystemComponent. Particles/ParticleSystemComponent.h  

virtual void SetColorParameter ( FName ParameterName,
FLinearColor Param
)

 Set a named color instance parameter on this ParticleSystemComponent. Particles/ParticleSystemComponent.h  

virtual void SetEmitterEnable ( FName EmitterName,
bool bNewEnableState
)

 Enables/Disables a sub-emitter Particles/ParticleSystemComponent.h  

virtual void SetFloatParameter ( FName ParameterName,
float Param
)

 Change a named float parameter Particles/ParticleSystemComponent.h  

virtual void SetIntParameter ( FName ParameterName,
int Param
)

 Set a named float instance parameter on this ParticleSystemComponent. Particles/ParticleSystemComponent.h  

virtual void SetUseAutoManageAttachment ( bool bAutoManage
)

 Sets whether we should automatically attach to AutoAttachParent when activated, and detach from our parent when completed. Particles/ParticleSystemComponent.h  

virtual void SetVectorParameter ( FName ParameterName,
FVector Param
)

 Set a named vector instance parameter on this ParticleSystemComponent. Particles/ParticleSystemComponent.h  

Overridden from UPrimitiveComponent

Name Remarks Include Path Unreal Specifiers

virtual FPrimitiveSceneProxy * CreateSceneProxy()

 Creates a proxy to represent the primitive to the scene manager in the rendering thread. Particles/ParticleSystemComponent.h  

virtual FBodyInstance * GetBodyInstance ( FName BoneName,
bool bGetWelded,
int32 Index
) const

 Returns BodyInstance of the component. Particles/ParticleSystemComponent.h  

virtual UMaterialInterface * GetMaterial ( int32 ElementIndex
) const

 Returns the material used by the element at the specified index Particles/ParticleSystemComponent.h  

virtual UMaterialInterface * GetMaterialByName ( FName MaterialSlotName
) const

 Returns the material used by the element in the slot with the specified name. Particles/ParticleSystemComponent.h  

virtual int32 GetNumMaterials()

 Return number of material elements in this primitive Particles/ParticleSystemComponent.h  

virtual void GetStreamingRenderAssetInfo ( FStreamingTextureLevelContext& LevelContext,
TArray< FStreamingRenderAssetPrimitiveInfo >& OutStreamingRenderAssets
) const

 Enumerates the streaming textures/meshes used by the primitive. Particles/ParticleSystemComponent.h  

virtual void GetUsedMaterials ( TArray< UMaterialInterface* >& OutMaterials,
bool bGetDebugMaterials
) const

 Retrieves the materials used in this component Particles/ParticleSystemComponent.h  

virtual void SetMaterial ( int32 ElementIndex,
UMaterialInterface* Material
)

 Changes the material applied to an element of the mesh. Particles/ParticleSystemComponent.h  

virtual void SetMaterialByName ( FName MaterialSlotName,
UMaterialInterface* Material
)

 Changes the material applied to an element of the mesh. Particles/ParticleSystemComponent.h  

Overridden from USceneComponent

Name Remarks Include Path Unreal Specifiers

virtual FBoxSphereBounds CalcBounds ( const FTransform& LocalToWorld
) const

 Calculate the bounds of the component. Default behavior is a bounding box/sphere of zero size. Particles/ParticleSystemComponent.h  

virtual bool GetMaterialPropertyPath ( int32 ElementIndex,
UObject*& OutOwner,
FString& OutPropertyPath,
FProperty*& OutProperty
)

 Returns full material property path and UObject owner property object Path examples: Material property path with array element and inner struct Materials[0].InnerStruct.Material Material property path with array element Materials[0] Simple material property path Materials Particles/ParticleSystemComponent.h  

virtual void OnAttachmentChanged()

 Called when AttachParent changes, to allow the scene to update its attachment state. Particles/ParticleSystemComponent.h  

virtual void OnChildAttached ( USceneComponent* ChildComponent
)

 Called after a child scene component is attached to this component. Particles/ParticleSystemComponent.h  

virtual void OnChildDetached ( USceneComponent* ChildComponent
)

 Called after a child scene component is detached from this component. Particles/ParticleSystemComponent.h  

Overridden from UActorComponent

Name Remarks Include Path Unreal Specifiers

virtual void Activate ( bool bReset
)

 Activates the SceneComponent, should be overridden by native child classes. Particles/ParticleSystemComponent.h  

virtual UObject const * AdditionalStatObject()

 Give a readable name for this component, including asset name if applicable Particles/ParticleSystemComponent.h  

virtual void ApplyWorldOffset ( const FVector& InOffset,
bool bWorldShift
)

 Called by owner actor on position shifting Component should update all relevant data structures to reflect new actor location Particles/ParticleSystemComponent.h  

virtual void CheckForErrors ()

 Function that gets called from within Map_Check to allow this actor component to check itself for any potential errors and register them with map check dialog. Particles/ParticleSystemComponent.h  

virtual void Deactivate()

 Deactivates the SceneComponent. Particles/ParticleSystemComponent.h  

virtual bool IsComponentTickEnabled()

 Returns whether this component has tick enabled or not Particles/ParticleSystemComponent.h  

virtual bool IsReadyForOwnerToAutoDestroy()

 Overridable check for a component to indicate to its Owner that it should prevent the Actor from auto destroying when finished Particles/ParticleSystemComponent.h  
Allows components to handle an EOF update happening mid tick. Particles/ParticleSystemComponent.h  

virtual bool RequiresGameThreadEndOfFrameRecreate()

 Return true if this component requires end of frame recreates to happen from the game thread. Particles/ParticleSystemComponent.h  

virtual bool RequiresGameThreadEndOfFrameUpdates()

 Return true if this component requires end of frame updates to happen from the game thread. Particles/ParticleSystemComponent.h  

virtual void SetComponentTickEnabled ( bool bEnabled
)

 Set this component's tick functions to be enabled or disabled. Particles/ParticleSystemComponent.h  

virtual void TickComponent ( float DeltaTime,
enum ELevelTick TickType,
FActorComponentTickFunction* ThisTickFunction
)

 Function called every frame on this ActorComponent. Particles/ParticleSystemComponent.h  

Overridden from UObject

Name Remarks Include Path Unreal Specifiers

virtual void BeginDestroy()

   Particles/ParticleSystemComponent.h  

virtual void FinishDestroy()

   Particles/ParticleSystemComponent.h  

virtual FString GetDetailedInfoInternal()

   Particles/ParticleSystemComponent.h  

virtual void GetResourceSizeEx ( FResourceSizeEx& CumulativeResourceSize
)

   Particles/ParticleSystemComponent.h  

virtual void PostEditChangeChainProperty ( FPropertyChangedChainEvent& PropertyChangedEvent
)

   Particles/ParticleSystemComponent.h  

virtual void PostLoad()

   Particles/ParticleSystemComponent.h  

virtual void PreEditChange ( FProperty* PropertyThatWillChange
)

   Particles/ParticleSystemComponent.h  

virtual void Serialize ( FArchive& Ar
)

   Particles/ParticleSystemComponent.h  

Protected

Name Remarks Include Path Unreal Specifiers

void ClearDynamicData()

 Clears dynamic data on the rendering thread. Particles/ParticleSystemComponent.h  
Creates dynamic particle data for rendering the particle system this frame. Particles/ParticleSystemComponent.h  

void OrientZAxisTowardCamera()

 Orients the Z axis of the ParticleSystemComponent toward the camera while preserving the X axis direction Particles/ParticleSystemComponent.h  

virtual void UpdateDynamicData()

   Particles/ParticleSystemComponent.h  

virtual void UpdateLODInformation()

   Particles/ParticleSystemComponent.h  

Overridden from UActorComponent

Name Remarks Include Path Unreal Specifiers
Used to create any rendering thread information for this component Particles/ParticleSystemComponent.h  
Used to shut down any rendering thread structure for this component Particles/ParticleSystemComponent.h  

virtual void OnRegister()

 Called when a component is registered, after Scene is set, but before CreateRenderState_Concurrent or OnCreatePhysicsState are called. Particles/ParticleSystemComponent.h  

virtual void OnUnregister ()

 Called when a component is unregistered. Particles/ParticleSystemComponent.h  

virtual void SendRenderDynamicData_Concurrent()

 Called to send dynamic data for this component to the rendering thread Particles/ParticleSystemComponent.h  
Called to send a transform update for this component to the rendering thread Particles/ParticleSystemComponent.h  

virtual bool ShouldActivate()

 Return true if this component is in a state where it can be activated normally. Particles/ParticleSystemComponent.h  

Static

Name Remarks Include Path Unreal Specifiers

static FDynamicEmitterDataBase * CreateDynamicDataFromReplay ( FParticleEmitterInstance* EmitterInstance,
const FDynamicEmitterReplayDataBase* EmitterReplayData,
bool bSelected,
ERHIFeatureLevel::Type InFeatureLevel
)

 Static: Supplied with a chunk of replay data, this method will create dynamic emitter data that can be used to render the particle system Particles/ParticleSystemComponent.h  

Deprecated Variables

Name Type Remarks Include Path Unreal Specifiers
AutoAttachLocationType_DEPRECATED TEnumAsByte< EAttachLocation::Type > DEPRECATED: Options for how we handle our location when we attach to the AutoAttachParent, if bAutoManageAttachment is true. Particles/ParticleSystemComponent.h  

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