ULearningAgentsController | Unreal Engine 5.7 Documentation

API > API/Plugins > API/Plugins/LearningAgents

A controller is an object that can be used to construct actions from observations - essentially a hand-made Policy. This can be useful for making a learning agents system that uses some other existing behavior, e.g. we may want to gather demonstrations from a human or AI behavior tree controlling our agent(s) for imitation learning purposes.


Name	ULearningAgentsController
Type	class
Header File	/Engine/Plugins/Experimental/LearningAgents/Source/LearningAgents/Public/LearningAgentsController.h
Include Path	#include "LearningAgentsController.h"

Syntax

UCLASS (MinimalAPI, Abstract, HideDropDown, BlueprintType, Blueprintable)  
class ULearningAgentsController : public ULearningAgentsManagerListener

Inheritance Hierarchy

UObjectBase → UObjectBaseUtility → UObject → ULearningAgentsManagerListener → ULearningAgentsController

Constructors

Name	Remarks	Include Path	Unreal Specifiers
ULearningAgentsController ()	These constructors/destructors are needed to make forward declarations happy.	LearningAgentsController.h
ULearningAgentsController ( FVTableHelper& Helper )		LearningAgentsController.h

Destructors

Name	Remarks	Include Path	Unreal Specifiers
virtual ~ULearningAgentsController()		LearningAgentsController.h

Functions

Public

Name	Remarks	Include Path	Unreal Specifiers
void EvaluateAgentController ( FLearningAgentsActionObjectElement& OutActionObjectElement, ULearningAgentsActionObject* InActionObject, const ULearningAgentsObservationObject* InObservationObject, const FLearningAgentsObservationObjectElement& InObservationObjectElement, const int32 AgentId )	This callback should be overridden by the Controller and produces an Action Object Element from an Observation Object Element.	LearningAgentsController.h	BlueprintNativeEvent Category="LearningAgents" Meta=(ForceAsFunction)
void EvaluateAgentControllers ( TArray< FLearningAgentsActionObjectElement >& OutActionObjectElements, ULearningAgentsActionObject* InActionObject, const ULearningAgentsObservationObject* InObservationObject, const TArray< FLearningAgentsObservationObjectElement >& InObservationObjectElements, const TArray< int32 >& AgentIds )	This callback can be overridden by the Controller and produces an array of Action Object Elements, from an array of Observation Object Elements.	LearningAgentsController.h	BlueprintNativeEvent Category="LearningAgents" Meta=(ForceAsFunction)
void EvaluateController ()	Call this function when it is time to evaluate the controller and produce the actions for the agents.	LearningAgentsController.h	BlueprintCallable Category="LearningAgents"
void RunController()	Calls GatherObservations, followed by EvaluateController, followed by PerformActions	LearningAgentsController.h	BlueprintCallable Category="LearningAgents"
void SetupController ( ULearningAgentsManager& InManager, ULearningAgentsInteractor& InInteractor )	Initializes this object to be used with the given agent interactor.	LearningAgentsController.h	BlueprintCallable Category="LearningAgents"

Protected

Name	Remarks	Include Path	Unreal Specifiers
ULearningAgentsInteractor * GetInteractor ( const TSubclassOf< ULearningAgentsInteractor > InteractorClass ) const	Gets the agent interactor associated with this component.	LearningAgentsController.h	BlueprintPure Category="LearningAgents" Meta=(DeterminesOutputType="InteractorClass")

Static

Name	Remarks	Include Path	Unreal Specifiers
static ULearningAgentsController * MakeController ( ULearningAgentsManager& InManager, ULearningAgentsInteractor& InInteractor, TSubclassOf< ULearningAgentsController > Class, const FName Name )	Constructs a new controller for the given agent interactor.	LearningAgentsController.h	BlueprintCallable Category="LearningAgents" Meta=(DeterminesOutputType="Class")

Navigation