1. Epic GamesDeveloper
  3. UNiagaraSystem

UNiagaraSystem

A Niagara System contains multiple Niagara Emitters to create various effects.

API > API/Plugins > API/Plugins/Niagara

Inheritance Hierarchy

References

   
Module Niagara
Header /Engine/Plugins/FX/Niagara/Source/Niagara/Classes/NiagaraSystem.h
Include #include "NiagaraSystem.h"

Syntax

UCLASS&40;BlueprintType, Meta&61;&40;LoadBehavior&61;"LazyOnDemand"&41;, MinimalAPI&41;  
class UNiagaraSystem :  
    public UFXSystemAsset,  
    public INiagaraParameterDefinitionsSubscriber

Remarks

A Niagara System contains multiple Niagara Emitters to create various effects. Niagara Systems can be placed in the world, unlike Emitters, and expose User Parameters to configure an effect at runtime.

Variables

  Type Name Description
Protected variable TArray< TUniquePtr< FNiagaraActiveCompilation > > ActiveCompilations  
Protected variable int32 ActiveInstances Total active instances of this system.
Protected variable FGuid AssetGuid  
Protected variable UProperty export TObjectPtr< UNiagaraBakerSettings > BakerGeneratedSettings Generated data baker settings, will be null until we have generated at least once.
Protected variable UProperty export TObjectPtr< UNiagaraBakerSettings > BakerSettings Settings used inside the baker
Protected variable uint32: 1 bAllDIsPostSimulateCanOverlapFrames  
Protected variable uint32: 1 bAllDIsPostStageCanOverlapTickGroups  
Protected variable bool bAllowCullingForLocalPlayers  
Protected variable UProperty Category, EditAnywhere, Meta uint32: 1 bAllowCullingForLocalPlayersOverride The override value for bAllowCullingForLocalPlayers from the Effect Type.
Protected variable UProperty Category, EditAnywhere, Meta bool bAutoDeactivate  
Protected variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta uint32: 1 bBakeOutRapidIteration When enable constant values are baked into the scripts while editing the system, this will increase iteration times but improve performance.
Protected variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta uint32: 1 bBakeOutRapidIterationOnCook When enabled constant values are baked into scripts to improve performance.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadOnly uint8: 1 bCastShadow When enabled this is the default value set on the component.
Protected variable bool bCompilationReentrantGuard  
Public variable UProperty Transient uint32: 1 bCompileForEdit When enabled we compile for the edit path, which can result in slower system performance but faster editor responsiveness.
Protected variable UProperty Category, EditAnywhere, AdvancedDisplay uint32: 1 bCompressAttributes Toggles whether or not emitters within this system will try and compress their particle attributes.
Protected variable UProperty Category, EditAnywhere bool bDeterminism When disabled we will generate a RandomSeed per instance on reset which is not deterministic.
Protected variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta uint32: 1 bDisableDebugSwitches When enable debug switches are disabled while editing the system.
Protected variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta uint32: 1 bDisableDebugSwitchesOnCook When enabled debug switches are disabled when compiling the system.
Public variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta uint8: 1 bDisableExperimentalVM If true, disables experimental VM, if available
Public variable UProperty Category, EditAnywhere, AdvancedDisplay Transient bool bDumpDebugEmitterInfo  
Public variable UProperty Category, EditAnywhere, AdvancedDisplay Transient bool bDumpDebugSystemInfo  
Public variable UProperty Category, EditAnywhere, Meta uint32: 1 bFixedBounds Whether or not fixed bounds are enabled.
Protected variable UProperty Category, EditAnywhere, Meta bool bFixedTickDelta  
Public variable bool bFullyLoaded  
Protected variable uint32: 1 bHasAnyGPUEmitters  
Protected variable uint32: 1 bHasDIsWithPostSimulateTick  
Protected variable UProperty Category, EditAnywhere, AdvancedDisplay uint32: 1 bIgnoreParticleReadsForAttributeTrim If true ParticleReads will not absolutely prevent attribute trimming - User must ensure that the appropriate attributes are preserved on the source emitter!
Protected variable bool bIsolateEnabled  
Protected variable uint32: 1 bIsReadyToRunCached  
Protected variable uint32: 1 bIsValidCached  
Protected variable uint32: 1 bLwcEnabledSettingCached  
Protected variable uint32: 1 bNeedsAsyncOptimize  
Protected variable UProperty bool bNeedsGPUContextInitForDataInterfaces  
Protected variable uint32: 1 bNeedsRequestCompile When set the system needs to compile before it can be activated.
Protected variable uint32: 1 bNeedsSortedSignificanceCull  
Protected variable UProperty Category, EditAnywhere, Meta uint32: 1 bOverrideAllowCullingForLocalPlayers Controls whether we should override the Effect Type value for bAllowCullingForLocalPlayers.
Public variable UProperty Category, EditAnywhere, Meta uint8: 1 bOverrideCastShadow Various optional overrides for component properties when spawning a system.
Public variable UProperty Category, EditAnywhere, Meta uint8: 1 bOverrideCustomDepthStencilValue  
Public variable UProperty Category, EditAnywhere, Meta uint8: 1 bOverrideCustomDepthStencilWriteMask  
Public variable UProperty Category, EditAnywhere, Meta uint8: 1 bOverrideReceivesDecals  
Public variable UProperty Category, EditAnywhere, Meta uint8: 1 bOverrideRenderCustomDepth  
Protected variable UProperty Category, EditAnywhere, Meta bool bOverrideScalabilitySettings  
Public variable UProperty Category, EditAnywhere, Meta uint8: 1 bOverrideTranslucencySortDistanceOffset  
Public variable UProperty Category, EditAnywhere, Meta uint8: 1 bOverrideTranslucencySortPriority  
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadOnly uint8: 1 bReceivesDecals When enabled this is the default value set on the component. Whether the primitive receives decals.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadOnly uint8: 1 bRenderCustomDepth When enabled this is the default value set on the component.
Public variable UProperty Category, EditAnywhere bool bRequireCurrentFrameData When enabled, we follow the settings on the UNiagaraComponent for tick order.
Public variable UProperty Category, EditAnywhere, AdvancedDisplay uint8: 1 bSupportLargeWorldCoordinates If true then position type values will be rebased on system activation to fit into a float precision vector.
Protected variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta uint32: 1 bTrimAttributes When enabled we trim particle attributes while editing the system.
Protected variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta uint32: 1 bTrimAttributesOnCook If true Particle attributes will be removed from the DataSet if they are unnecessary (are never read by ParameterMap)
Protected variable TSharedPtr< FNiagaraGraphCachedDataBase, ESPMode::ThreadSafe > CachedTraversalData  
Public variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta assetregistrysearchable FText Category Category of this system.
Protected variable FString CrashReporterTag  
Protected variable FNiagaraSystemScalabilitySettings & CurrentScalabilitySettings Scalability settings.
Public variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta BlueprintReadOnly int32 CustomDepthStencilValue When enabled this is the default value set on the component.
Public variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta BlueprintReadOnly ERendererStencilMask CustomDepthStencilWriteMask When enabled this is the default value set on the component. Mask used for stencil buffer writes.
Protected variable UProperty TObjectPtr< UNiagaraEditorDataBase > EditorData Data used by the editor to maintain UI state etc..
Public variable UProperty Transient FNiagaraParameterStore EditorOnlyAddedParameters  
Protected variable UProperty TObjectPtr< UNiagaraEditorParametersAdapterBase > EditorParameters Wrapper for editor only parameters.
Protected variable UProperty Category, EditAnywhere TObjectPtr< UNiagaraEffectType > EffectType An effect types defines settings shared between systems, for example scalability and validation rules.
Protected variable TArray< TSharedRef< const FNiagaraEmitterCompiledData > > EmitterCompiledData  
Protected variable TArray< FNiagaraEmitterExecutionIndex > EmitterExecutionOrder Array of emitter indices sorted by execution priority.
Protected variable TArray< FNiagaraDataSetAccessor< ENiagaraExecutionState > > EmitterExecutionStateAccessors  
Protected variable UProperty TArray< FNiagaraEmitterHandle > EmitterHandles Handles to the emitter this System will simulate.
Protected variable TArray< TArray< FNiagaraDataSetAccessor< FNiagaraSpawnInfo > > > EmitterSpawnInfoAccessors  
Protected variable UProperty FNiagaraUserRedirectionParameterStore ExposedParameters Variables exposed to the outside work for tweaking
Protected variable UProperty Category, EditAnywhere, Meta FBox FixedBounds The fixed bounding box value for the whole system.
Protected variable UProperty Category, EditAnywhere, Meta float FixedTickDeltaTime If activated, the system ticks with a fixed delta time instead of the varying game thread delta time.
Public variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta assetregistrysearchable ENiagaraScriptLibraryVisibility LibraryVisibility If this system is exposed to the library, or should be explicitly hidden.
Protected variable TOptional< float > MaxDeltaTime  
Protected variable UProperty FNiagaraMessageStore MessageStore  
Protected variable FOnScalabilityChanged OnScalabilityChangedDelegate A multicast delegate that is called whenever the effect type or the effect type values are changed
Protected variable FOnSystemCompiled OnSystemCompiledDelegate A multicast delegate which is called whenever the script has been compiled (successfully or not).
Protected variable FOnSystemPostEditChange OnSystemPostEditChangeDelegate A multicast delegate which is called whenever this system's properties are changed.
Protected variable UProperty Category, EditAnywhere, AdvancedDisplay TArray< TObjectPtr< UNiagaraParameterCollectionInstance > > ParameterCollectionOverrides  
Public variable UProperty TArray< FParameterDefinitionsSubscription > ParameterDefinitionsSubscriptions Subscriptions to definitions of parameters.
Protected variable FGraphEventRef PSOPrecacheCompletionEvent  
Protected variable UProperty Category, EditAnywhere, Meta int32 RandomSeed Seed used for system script random number generator.
Protected variable TArray< FNiagaraRendererExecutionIndex > RendererCompletionOrder Array of renderer indices to notify system Completion, in order of execution
Protected variable TArray< int32 > RendererDrawOrder Precomputed emitter renderer draw order, since emitters & renderers are not dynamic we can do this.
Protected variable TArray< FNiagaraRendererExecutionIndex > RendererPostTickOrder Array of renderer indices to notify system PostTick, in order of execution
Public variable UProperty TArray< TObjectPtr< UNiagaraScript > > ScratchPadScripts  
Protected variable FGraphEventRef ScriptOptimizationCompletionEvent  
Protected variable TUniquePtr< FNiagaraSystemStaticBuffers, FStaticBuffersDeletor > StaticBuffers  
Protected variable UProperty FNiagaraSystemCompiledData SystemCompiledData  
Protected variable FNiagaraDataSetAccessor< ENiagaraExecutionState > SystemExecutionStateAccessor  
Protected variable UProperty Category, EditAnywhere, Meta FNiagaraSystemScalabilityOverrides SystemScalabilityOverrides  
Protected variable UProperty TObjectPtr< UNiagaraScript > SystemSpawnScript The script which defines the System parameters, and which generates the bindings from System parameter to emitter parameter.
Protected variable UProperty TObjectPtr< UNiagaraScript > SystemUpdateScript The script which defines the System parameters, and which generates the bindings from System parameter to emitter parameter.
Public variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta assetregistrysearchable FText TemplateAssetDescription  
Public variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta assetregistrysearchable ENiagaraScriptTemplateSpecification TemplateSpecification If this system is a regular system, a template or a behavior example.
Public variable UProperty TObjectPtr< class UTexture2D > ThumbnailImage Internal: The thumbnail image.
Public variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta BlueprintReadOnly float TranslucencySortDistanceOffset When enabled this is the default value set on the component.
Public variable UProperty Category, EditAnywhere, AdvancedDisplay, Meta BlueprintReadOnly int32 TranslucencySortPriority When enabled this is the default value set on the component.
Public variable UProperty Transient FNiagaraSystemUpdateContext UpdateContext  
Protected variable FRenderCommandFence WaitRenderCommandsFence  
Protected variable UProperty Category, EditAnywhere int32 WarmupTickCount Number of ticks to process for warmup. You can set by this or by time via WarmupTime.
Protected variable UProperty Category, EditAnywhere, Meta float WarmupTickDelta Delta time to use for warmup ticks.
Protected variable UProperty Category, EditAnywhere, Meta float WarmupTime Warm up time in seconds.

Constructors

  Type Name Description
Public function  

UNiagaraSystem ( const FObjectInitializer& ObjectInitializer
)

  
Public function    

Destructors

  Type Name Description
Public function    

Functions

  Type Name Description
Public function FNiagaraEmitterHandle

AddEmitterHandle ( UNiagaraEmitter& SourceEmitter,
FName EmitterName,
FGuid EmitterVersion
)

 Adds a new emitter handle to this System.
Public function void Adds a new emitter handle to this system without copying the original asset.
Public function Const void

AddToInstanceCountStat ( int32 NumInstances,
bool bSolo
)

  
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function void  
Public function Const bool  
Public function void Cache data & accessors from the compiled data, allows us to avoid per instance.
Public function Const bool

CanObtainEmitterAttribute ( const FNiagaraVariableBase& InVarWithUniqueNameNamespace,
FNiagaraTypeDefinition& OutBoundType
)

  
Public function Const bool  
Public function Const bool  
Public function Virtual bool

ChangeEmitterVersion ( const FVersionedNiagaraEmitter& Emitter,
const FGuid& NewVersion
)

  
Public function bool

ComputeEmitterPriority ( int32 EmitterIdx,
TArray< int32, TInlineAllocator< 32 >>& EmitterPriorities,
const TBitArray< TInlineAllocator< 32 >>& EmitterDependencyGraph
)

 Computes emitter priorities based on the dependency information.
Public function void Computes the order in which the emitters in the Emitters array will be ticked and stores the results in EmitterExecutionOrder.
Public function void Computes the order in which renderers will render
Public function Static void

DeclareConstructClasses ( TArray< FTopLevelAssetPath >& OutConstructClasses,
const UClass* SpecificSubclass
)

  
Public function FNiagaraEmitterHandle

DuplicateEmitterHandle ( const FNiagaraEmitterHandle& EmitterHandleToDuplicate,
FName EmitterName
)

 Duplicates an existing emitter handle and adds it to the System.
Public function Const void  
Public function void Queries all the data interfaces in the array for emitter dependencies.
Public function void Looks at all the event handlers in the emitter to determine which other emitters it depends on.
Public function void  
Public function void

ForEachPlatformSet ( TAction Func
)

 Performs the passed action for all FNiagaraPlatformSets used by this system.
Public function Const void

ForEachScript ( TAction Func
)

 Performs the passed action for all scripts in this system.
Public function Const void  
Protected function Const void  
Public function int32 &  
Public function Const const FGuid &  
Public function Const const UNiagaraBakerSettings *  
Public function UNiagaraBakerSettings *  
Public function Const const TSharedPtr< FNiagaraGraphCachedDataBase, ESPMode::ThreadSafe > & Get the cached parameter map traversal for this emitter.
Public function Const const FString &  
Public function Const ENiagaraCullProxyMode  
Public function Const const FNiagaraSystemScalabilityOverride &  
Public function Const const UNiagaraEditorDataBase * Gets editor specific data stored with this system.
Public function UNiagaraEditorDataBase * Gets editor specific data stored with this system.
Public function UNiagaraEditorParametersAdapterBase * Gets editor specific parameters stored with this system
Public function Const UNiagaraEffectType *  
Public function Const const TArray< TSharedRef< const FNiagaraEmitterCompiledData > > &  
Public function Const TConstArrayView< FNiagaraEmitterExecutionIndex >  
Public function Const TConstArrayView< FNiagaraDataSetAccessor< ENiagaraExecutionState > >  
Public function FNiagaraEmitterHandle &

GetEmitterHandle ( int Idx
)

  
Public function Const const FNiagaraEmitterHandle &

GetEmitterHandle ( int Idx
)

  
Public function TArray< FNiagaraEmitterHandle > & Gets an array of the emitter handles.
Public function Const const TArray< FNiagaraEmitterHandle > & Gets an array of the emitter handles.
Public function Const TConstArrayView< FNiagaraDataSetAccessor< FNiagaraSpawnInfo > >

GetEmitterSpawnInfoAccessors ( int32 EmitterIndex
)

  
Public function Const const FNiagaraUserRedirectionParameterStore & From the last compile, what are the variables that were exported out of the system for external use?
Public function FNiagaraUserRedirectionParameterStore &  
Public function Const FBox  
Public function Const float  
Public function Const bool  
Public function Const TOptional< float >  
Public function FNiagaraMessageStore &  
Public function int  
Public function Const bool  
Public function UNiagaraParameterCollectionInstance *  
Public function Const int32  
Public function Const TConstArrayView< FNiagaraRendererExecutionIndex >  
Public function Const TConstArrayView< int32 >  
Public function Const TConstArrayView< FNiagaraRendererExecutionIndex >  
Public function FNiagaraSystemScalabilityOverrides &  
Public function Const const FNiagaraSystemScalabilitySettings &  
Public function FGraphEventRef  
Public function Const const FNiagaraSystemStaticBuffers *  
Public function Const TStatId

GetStatID ( bool bGameThread,
bool bConcurrent
)

  
Public function Const const FNiagaraSystemCompiledData &  
Public function Const const FNiagaraDataSetAccessor< ENiagaraExecutionState > &  
Public function FNiagaraSystemScalabilityOverrides &  
Public function Const const UNiagaraScript *  
Public function UNiagaraScript * Gets the System script which is used to populate the System parameters and parameter bindings.
Public function Const const UNiagaraScript *  
Public function UNiagaraScript *  
Public function Const int32  
Public function Const float  
Public function Const float  
Public function void  
Public function void

HandleVariableRemoved ( const FNiagaraVariable& InOldVariable,
bool bUpdateContexts
)

 Helper method to handle when an internal variable has been removed.
Public function void

HandleVariableRenamed ( const FNiagaraVariable& InOldVariable,
const FNiagaraVariable& InNewVariable,
bool bUpdateContexts
)

 Helper method to handle when an internal variable has been renamed.
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function Const bool

HasOutstandingCompilationRequests ( bool bIncludingGPUShaders
)

 Are there any pending compile requests?
Public function Const bool  
Public function void Invalidates any active compilation requests which will ignore their results.
Public function void  
Public function Const bool  
Public function Const bool  
Public function Const bool

IsValid ()

 Returns true if this system is valid and can be instanced. False otherwise.
Public function void Tries to abort all running shader compilations
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function void Updates any post compile data based upon data interfaces.
Public function void Updates the system post UObject change.
Public function FOnScalabilityChanged & Delegate called on effect type or effect type value change
Public function FOnSystemCompiled & Delegate called when the system's dependencies have all been compiled.
Public function FOnSystemPostEditChange & Delegate called on PostEditChange.
Public function bool

PollForCompilationComplete ( bool bFlushRequestCompile
)

 If we have a pending compile request, is it done with yet?
Public function void  
Public function void Updates the rapid iteration parameters for all scripts referenced by the system.
Public function Static void  
Public function Static void  
Public function Const bool Determines if this system has the supplied emitter as an editable and simulating emitter instance.
Public function void Updates the system's rapid iteration parameters from a specific emitter.
Public function void  
Public function void

RemoveEmitterHandle ( const FNiagaraEmitterHandle& EmitterHandleToDelete
)

 Removes the provided emitter handle.
Public function void

RemoveEmitterHandlesById ( const TSet< FGuid >& HandlesToRemove
)

 Removes the emitter handles which have an Id in the supplied set.
Public function void Removes the system's rapid iteration parameters for a specific emitter.
Public function bool

RequestCompile ( bool bForce,
FNiagaraSystemUpdateContext* OptionalUpdateContext
)

 Request that any dirty scripts referenced by this system be compiled.
Public function Static void  
Public function void Resets internal data leaving it in a state which would have minimal cost to exist in headless builds (servers)
Public function void  
Public function void

SetBakeOutRapidIterationOnCook ( bool bBakeOut
)

  
Public function void  
Public function void  
Public function void

SetFixedBounds ( const FBox& Box
)

  
Public function void

SetIsolateEnabled ( bool bIsolate
)

  
Public function void

SetOverrideScalabilitySettings ( bool bOverride
)

  
Public function void

SetTrimAttributesOnCook ( bool bTrim
)

  
Public function void

SetWarmupTickDelta ( float InWarmupTickDelta
)

  
Public function void

SetWarmupTime ( float InWarmupTime
)

  
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function Const bool  
Public function void  
Public function void  
Public function void  
Public function Const bool  
Public function Const bool

UsesEmitter ( const FVersionedNiagaraEmitter& VersionedEmitter
)

  
Public function Const bool  
Public function Const bool

UsesScript ( const UNiagaraScript* Script
)

  
Public function void

WaitForCompilationComplete ( bool bIncludingGPUShaders,
bool bShowProgress
)

 Blocks until all active compile jobs have finished

Overridden from UObject

  Type Name Description
Public function Virtual void Starts caching of platform specific data for the target platform Called when cooking before serialization so that object can prepare platform specific data Not called during normal loading of objects
Public function Virtual void Called before destroying the object.
Public function Virtual Const void Gathers a list of asset registry searchable tags which are name/value pairs with some type information This only needs to be implemented for asset objects
Public function Virtual void

GetResourceSizeEx ( FResourceSizeEx& CumulativeResourceSize
)

 Get the size of the object/resource for use in memory tools or to display to artists/LDs in the Editor This is the extended version which separates up the used memory into different memory regions (the actual definition of which may be platform specific).
Public function Virtual bool Have we finished loading all the cooked platform data for the target platforms requested in BeginCacheForCookedPlatformData
Public function Virtual bool Called to check if the object is ready for FinishDestroy.
Public function Virtual void

PostDuplicate ( bool bDuplicateForPIE
)

 Called after duplication & serialization and before PostLoad.
Public function Virtual void

PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent
)

 Called when a property on this object has been modified externally
Public function Virtual void Called after the C++ constructor and after the properties have been initialized, including those loaded from config.
Public function Virtual void Do any object-specific cleanup required immediately after loading an object.
Public function Virtual void

PreEditChange ( FProperty* PropertyAboutToChange
)

 This is called when a property is about to be modified externally
Public function Virtual void

PreSave ( FObjectPreSaveContext SaveContext
)

 Presave function.
Public function Virtual void Handles reading, writing, and reference collecting using FArchive.

Overridden from UObjectBaseUtility

  Type Name Description
Public function Virtual Const bool Called after load to determine if the object can be a cluster root

Overridden from INiagaraParameterDefinitionsSubscriber

  Type Name Description
Public function Virtual TArray< UNiagaraScriptSourceBase * > Get all UNiagaraScriptSourceBase of this subscriber.
Public function Virtual TArray< UNiagaraEditorParametersAdapterBase * > Get All adapters to editor only script vars owned directly by this subscriber.
Public function Virtual TArray< INiagaraParameterDefinitionsSubscriber * > Get all subscribers that are owned by this subscriber.
Public function Virtual TArray< FParameterDefinitionsSubscription > &  
Public function Virtual Const const TArray< FParameterDefinitionsSubscription > &  
Public function Virtual Const FString Get the path to the UObject of this subscriber.

Classes

  Type Name Description
Protected struct FStaticBuffersDeletor    

Typedefs

Name Description
FOnScalabilityChanged  
FOnSystemCompiled  
FOnSystemPostEditChange  

Constants

Name Description
ComputeEmitterExecutionOrderMessageId  
kStartNewOverlapGroupBit When an index inside the EmitterExecutionOrder array has this bit set, it means the corresponding emitter cannot execute in parallel with the previous emitters due to a data dependency.
ResolveDIsMessageId  

Deprecated Variables

  Type Name Description
Public variable UProperty bool bExposeToLibrary_DEPRECATED Deprecated library exposure bool.
Public variable UProperty bool bIsTemplateAsset_DEPRECATED Deprecated template asset bool. Use the TemplateSpecification enum instead.
Protected variable UProperty TMap< FGuid, TObjectPtr< UNiagaraMessageDataBase > > MessageKeyToMessageMap_DEPRECATED Messages associated with the System asset.
Protected variable UProperty TArray< FNiagaraSystemScalabilityOverride > ScalabilityOverrides_DEPRECATED  

Deprecated Functions

  Type Name Description
Public function Virtual PRAGMA_DISABLE_DEPRECATION_WARNINGSvoid

PreSave ( const ITargetPlatform* TargetPlatform
)

 Use version that takes FObjectPreSaveContext instead.

Ask questions and help your peers Developer Forums

Write your own tutorials or read those from others Learning Library

On this page