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> Unreal Engine API Reference > Plugins > Niagara > FNiagaraSystemParameters

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FNiagaraSystemParameters

Any change to this structure, or it's GetVariables implementation will require a bump in the CustomNiagaraVersion so that we properly rebuild the scripts You must pad this struct and the results of [GetVariables()](API\Plugins\Niagara\FNiagaraSystemParameters\GetVariables) to a 16 byte boundry.

Windows

MacOS

Linux

References

Module	Niagara
Header	/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraTypes.h
Include	#include "NiagaraTypes.h"

Syntax

struct FNiagaraSystemParameters

Remarks

Any change to this structure, or it's GetVariables implementation will require a bump in the CustomNiagaraVersion so that we properly rebuild the scripts You must pad this struct and the results of GetVariables() to a 16 byte boundry.

Variables

		Name	Description
	int32	_Pad0
	int32	_Pad1
	int32	_Pad2
	int32	EngineAliveEmitterCount
	int32	EngineEmitterCount
	uint32	EngineExecutionState
	float	EngineLodDistance
	float	EngineLodDistanceFraction
	float	EngineSystemAge
	int32	EngineTickCount
	float	EngineTimeSinceRendered
	int32	SignificanceIndex

Functions

		Name	Description
	const TArray...	GetVariables()

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