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> Unreal Engine API Reference > Runtime > Engine > IStreamingManager

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IStreamingManager

Pure virtual base class of a streaming manager.

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Inheritance Hierarchy

IStreamingManager

FStreamingManagerCollection

IAnimationStreamingManager

FAnimationStreamingManager

IAudioStreamingManager

	FCachedAudioStreamingManager
	FLegacyAudioStreamingManager

IGeometryCacheStreamingManager

IRenderAssetStreamingManager

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Public/ContentStreaming.h
Include	#include "ContentStreaming.h"

Syntax

struct IStreamingManager

Remarks

Pure virtual base class of a streaming manager.

Variables

		Name	Description
	int32	NumWantingResources	Number of resources that currently wants to be streamed in.
	int32	NumWantingResourcesCounter	The current counter for NumWantingResources.

Constructors

	Name	Description
	IStreamingManager()

Destructors

	Name	Description
	~IStreamingManager()	Virtual destructor

Functions

	Name	Description
void	AddLevel ( ULevel* Level )	Adds a ULevel that has already prepared StreamingData to the streaming manager.
void	AddViewInformation ( const FVector& ViewOrigin, float ScreenSize, float FOVScreenSize, float BoostFactor, bool bOverrideLocation, float Duration, TWeakObjectPtr< AActor > InActorToB... )	Adds the passed in view information to the static array.
void	AddViewInfoToArray ( TArray< FStreamingViewInfo >& View..., const FVector& ViewOrigin, float ScreenSize, float FOVScreenSize, float BoostFactor, bool bOverrideLocation, float Duration, TWeakObjectPtr< AActor > InActorToB... )	Adds the passed in view information to the static array.
void	AddViewSlaveLocation ( const FVector& SlaveLocation, float BoostFactor, bool bOverrideLocation, float Duration )	Queue up view "slave" locations to the streaming system.
int32	BlockTillAllRequestsFinished ( float TimeLimit, bool bLogResults )	Blocks till all pending requests are fulfilled.
void	CancelForcedResources()	Cancels the timed Forced resources (i.e used the Kismet action "Stream In Textures").
bool	Exec ( UWorld* InWorld, const TCHAR* Cmd, FOutputDevice& Ar )	Allows the streaming manager to process exec commands.
FStreamingMa...	Get()
FStreamingMa...	Get_Concurrent()	Same as get but could fail if state not allocated or shutdown.
int32	GetNumViews()	Returns the number of view infos.
int32	GetNumWantingResources()	Returns the number of resources that currently wants to be streamed in.
int32	GetNumWantingResourcesID()	Returns the current ID for GetNumWantingResources().
const FStrea...	GetViewInformation ( int32 ViewIndex )	Returns the view info by the specified index.
bool	HasShutdown()	Checks if the streaming manager has already been shut down.
void	NotifyActorDestroyed ( AActor* Actor )	Called when a spawned actor is destroyed.
void	NotifyLevelChange()	Notifies manager of "level" change.
void	NotifyLevelOffset ( ULevel* Level, const FVector& Offset )	Notifies manager that level primitives were shifted
void	NotifyPrimitiveDetached ( const UPrimitiveComponent* Pri... )	Called when a primitive is detached from an actor or another component.
void	NotifyPrimitiveUpdated ( const UPrimitiveComponent* Pri... )	Called when a primitive streaming data needs to be updated.
void	NotifyPrimitiveUpdated_Concurrent ( const UPrimitiveComponent* Pri... )	Called when a primitive streaming data needs to be updated in the last stage of the frame.
void	OnAudioStreamingParamsChanged()
void	PropagateLightingScenarioChange()	Propagates a change to the active lighting scenario.
void	RemoveLevel ( ULevel* Level )	Removes a ULevel from the streaming manager.
void	RemoveStreamingViews ( ERemoveStreamingViews RemovalType )	Removes streaming views from the streaming manager.
void	RemoveViewInfoFromArray ( TArray< FStreamingViewInfo >& View..., const FVector& ViewOrigin )	Remove view infos with the same location from the given array.
void	SetDisregardWorldResourcesForFrames ( int32 NumFrames )	Don't stream world resources for the next NumFrames.
void	SetupViewInfos ( float DeltaTime )	Sets up the CurrentViewInfos array based on PendingViewInfos, LastingViewInfos and SlaveLocations.
void	Shutdown()
int32	StreamAllResources ( float TimeLimit )	Streams in/out all resources that wants to and blocks until it's done.
void	Tick ( float DeltaTime, bool bProcessEverything )	Calls UpdateResourceStreaming(), and does per-frame cleaning.
void	UpdateResourceStreaming ( float DeltaTime, bool bProcessEverything )	Updates streaming, taking into account all current view infos.

Classes

	Name	Description
	FSlaveLocation

Constants

Name	Description
bPendingRemoveViews	Set when Tick() has been called.
CurrentViewInfos	Current collection of views that need to be taken into account for streaming.
LastingViewInfos	Views that stick around for a while. Override views are ignored if no movie is playing.
PendingViewInfos	Pending views. Emptied every frame.
SlaveLocations	Collection of view locations that will be added at the next call to AddViewInformation.

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