BlueprintableSubsystem v1.5

• Partially translated by lpl

The Profile of Plugin

This plugin provides six subsystems that can be inherited from blueprints：

• BPable_GameInstanceSubsystem

• BPable_LocalPlayerSubsystem

• BPable_WorldSubsystem

• BPable_TickableGameInstanceSubsystem

• BPable_TickableLocalPlayerSubsystem

• BPable_TickableWorldSubsystem

This usage of the Get to BPable subsystem in the figure is illegal. Because these Subsystems in the figure are the base classes provided by the plugin, they should not be acquired under any circumstances.

Of course, it is OK to get your subsystem blueprint class in the way in the figure.

About the use of the plugin is below. The above diagram only shows the role

Users can obtain the blueprint subsystem by inheriting these base classes directly from the blueprint.

Step-by-step usage guide

Take BPable_GameInstanceSubsystem as an example

• Open the project's plugin Settings

  

• Ensure that the BlueprintableSubsystem plugin is enabled

  

• Create the blueprint class in the Content browser and select BPable_GameInstanceSubsystem as the parent class

  

• Or you can quickly create subsystems in the content browser by right-clicking > Blueprints > Subsystems

  

• Then open the blueprint class of the GameInstanceSubsystem you created and edit it

  

• Call the blueprint Subsystem you created using the Get Subsystem general node in other blueprint classes

• (Note that if you create a subsystem and save it, but not in another blueprint and can't get a reference to the blueprint subsystem blueprint you created, restart the editor. After that you will be able to get the appropriate references)

  

  

About BlueprintableSubsystem

General Usage

In my Blueprint on the left side of the Blueprint class edit window click to override the corresponding function

Do not use a node whose World must be known in advance (such as GetActorOfClass and Delay) in Event Initialize and Deinitialize.

​ Reason: Subsystem's event Initialize and event Deinitialize are executed when World is not ready or is uninstalled, so executing nodes such as GetActorOfClass or Delay is not effective at this time.

​ Suggestion: Use this type of node for events other than event Initialize and event Deinitialize, such as WorldBeginPlay, Tick, or custom events

BPable_GameInstanceSubsystem

• Life time

  Follow its' Outer,which is also called UGameInstance.

• Events

  Name	Graphic	Explain
  Initialize		A event called after this subsystem created
  WorldBeginPlay		此World开始执行BeginPlay时调用的事件
  WorldBeginTearDown		此World开始执行TearDown时调用的事件
  Deinitialize		A event called before this subsystem was destoryed
  ShouldCreateSubsystem		A function called before this subsystem created the Implementation of it is not necessary If implement this function,return true to create this subsystem,return false not to create this subsystem

• Functions

  Name	Graphic	Explain
  GetGameInstance		Get the Outer, or UGameInstance, of the game instance subsystem

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BPable_LocalPlayerSubsystem

• Life time

  Follow its' Outer,which is also called ULocalPlayer.

• Events

  Name	Graphic	Explain
  Initialize		A event called after this subsystem created
  WorldBeginPlay		此World开始执行BeginPlay时调用的事件
  WorldBeginTearDown		此World开始执行TearDown时调用的事件
  Deinitialize		A event called before this subsystem was destoryed
  ShouldCreateSubsystem		A function called before this subsystem created the Implementation of it is not necessary If implement this function,return true to create this subsystem,return false not to create this subsystem

• Functions

  Name	Graphic	Explain
  GetLocalPlayerController		Get the APlayerController Corresponding to ULocalPlayer from the Outer(ULocalPlayer) of local player's sub system , return null when implementing Initialize

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BPable_WorldSubsystem

• Life time

  Following its' Outer，which is also called UWorld.Only appear in Game or PIE.

• Events

  Name	Graphic	Explain
  Initialize		A event called after this subsystem created
  PostInitialize		A event called after all UWorldSubsystem calls Initialize
  WorldBeginPlay		A event called when world is ready to start gameplay before the game mode transitions to the correct state and call BeginPlay on all actors
  Deinitialize		A event called before this subsystem was destoryed
  ShouldCreateSubsystem		A function called before this subsystem created the Implementation of it is not necessary If implement this function,return true to create this subsystem,return false not to create this subsystem
  WorldComponentsUpdated		Called after world components (e.g. line batcher and all level components) have been updated
  UpdateStreamingState		Updates sub-system required streaming levels (called by world's UpdateStreamingState function)

• Functions

Name	Graphic	Explain
GetWorldSoftPtr		Get world subsystem dependent level

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General Functions

Subsystem blueprint class with active state

• Function Overview

  An independent activation state that does not materially affect the Subsystem itself, providing a boolean state to the user

• Applicable Base Classes

  Subclasses of a base class whose class name is prefixed with "BPable"

• Class defaults

  Name	Explain
  ActiveDefault	Default activation status

• Functions

  Name	Graphic	Explain
  IsActive		Get the activation status value
  Activate		Activate and broadcast activation When the parameter bReset is true, it will still be activated again even if it is already active.
  Deactivate		Deactivate
  ToggleActive		Toggle activation
  SetActive		Sets the activation status. The parameter NewActive is the new value to be set. The parameter Reset is whether to reset the activation

• Delegates

  名称	解释
  OnActivated(Object,Reset)	The delegate executed after activation The parameter Object is a reference to the Subsystem that distributes the delegate The parameter Reset is whether the activation is reset on activation
  OnDeactivated(Object)	The delegate executed after the inactivation parameter Object is a reference to the Subsystem that distributes the delegate

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Tickable subsystem blueprint classes

• Function Overview

  With this feature subsystem blueprint classes can execute Tick events with each frame

  Tick events receive the effect of the activation status. Even if Tick is currently available, if it is not activated, the Tick event is not executed.

• Applicable Base Classes

  Subclasses of a base class whose class name is prefixed with "BPable_Tickable"

• Class defaults

  Name	Explain
  IsTickEnabled	Whether to enable Tick
  IsTickableThenPaused	Whether to enable Tick after the game is paused

• Event

  Some interfaces are Inherited from UBPable_GameInstanceSubsystem. Please view relevant contents in the parent class.

  Name	Graphic	Explain
  Tick		This event is called every frame after Tick is enabled

• Functions

  Some functions are Inherited from UBPable_GameInstanceSubsystem.Please view relevant contents in the parent class.

  Name	Graphic	Explain
  SetTickEnabled		To set whether to enable Tick
  IsSubsystemTickEnabled		The enabled value when return to tick
  SetTickableWhenPaused		Set whether to tick when the game pause
  IsSubsystemTickableWhenPaused		Report a value that wherher to tick when the game pause