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  3. ULearningAgentsController

ULearningAgentsController

A controller is an object that can be used to construct actions from observations - essentially a hand-made Policy.

API > API/Plugins > API/Plugins/LearningAgents

Inheritance Hierarchy

References

   
Module LearningAgents
Header /Engine/Plugins/Experimental/LearningAgents/Source/LearningAgents/Public/LearningAgentsController.h
Include #include "LearningAgentsController.h"

Syntax

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

Remarks

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.

Variables

  Type Name Description
Protected variable UProperty Category Transient visibleanywhere TObjectPtr< ULearningAgentsInteractor > Interactor The agent interactor this controller is associated with.

Constructors

  Type Name Description
Public function   These constructors/destructors are needed to make forward declarations happy.
Public function    

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Public function UFunction Category, Meta blueprintnativeevent 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.
Public function UFunction Category, Meta blueprintnativeevent 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.
Public function UFunction BlueprintCallable, Category void Call this function when it is time to evaluate the controller and produce the actions for the agents.
Protected function Const UFunction BlueprintPure, Category, Meta ULearningAgentsInteractor *

GetInteractor ( const TSubclassOf< ULearningAgentsInteractor > InteractorClass
)

 Gets the agent interactor associated with this component.
Public function Static UFunction BlueprintCallable, Category, Meta ULearningAgentsController * Constructs a new controller for the given agent interactor.
Public function UFunction BlueprintCallable, Category void Calls GatherObservations, followed by EvaluateController, followed by PerformActions
Public function UFunction BlueprintCallable, Category void Initializes this object to be used with the given agent interactor.

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