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  3. UAIPerceptionSystem

UAIPerceptionSystem

By design checks perception between hostile teams

API > API/Runtime > API/Runtime/AIModule > API/Runtime/AIModule/Perception

Inheritance Hierarchy

  • UObject
  • FTickableGameObject
  • UAISubsystem
  • UAIPerceptionSystem

References

   
Module AIModule
Header /Engine/Source/Runtime/AIModule/Classes/Perception/AIPerceptionSystem.h
Include #include "Perception/AIPerceptionSystem.h"

Syntax

UCLASS (ClassGroup=AI, Config=Game, defaultconfig, MinimalAPI)  
class UAIPerceptionSystem : public UAISubsystem

Remarks

By design checks perception between hostile teams

Variables

  Type Name Description
Protected variable uint32: 1 bHandlePawnNotification  
Protected variable TArray< FDelayedStimulus > DelayedStimuli  
Protected variable AIPerception::FListenerMap ListenerContainer  
Protected variable double NextStimuliAgingTick Timestamp of the next stimuli aging
Protected variable UProperty Category, EditAnywhere Config float PerceptionAgingRate  
Protected variable TMap< const AActor *, FPerceptionStimuliSource > RegisteredStimuliSources Not a UPROPERTY on purpose so that we have a control over when stuff gets removed from the map
Protected variable UProperty TArray< TObjectPtr< UAISense > > Senses  
Protected variable TArray< FPerceptionSourceRegistration > SourcesToRegister  
Protected variable FActorEndPlaySignature::FDelegate StimuliSourceEndPlayDelegate  

Constructors

  Type Name Description
Public function  

UAIPerceptionSystem ( const FObjectInitializer& ObjectInitializer
)

  

Functions

  Type Name Description
Protected function bool

AgeStimuli ( const float Amount
)

 Returns true if aging resulted in tagging any of the listeners to process its stimuli (
Protected function bool Sorts DelayedStimuli and delivers all the ones that are no longer "in the future"
Public function Static UAIPerceptionSystem *

GetCurrent ( UWorld& World
)

  
Public function Static UAIPerceptionSystem *

GetCurrent ( UObject* WorldContextObject
)

  
Protected function AIPerception::FListenerMap &  
Public function Static UFunction BlueprintCallable, Category, Meta TSubclassOf< UAISense >

GetSenseClassForStimulus ( UObject* WorldContextObject,
const FAIStimulus& Stimulus
)

  
Public function Const bool

IsSenseInstantiated ( const FAISenseID& SenseID
)

  
Public function Static void

MakeNoiseImpl ( AActor* NoiseMaker,
float Loudness,
APawn* NoiseInstigator,
const FVector& NoiseLocation,
float MaxRange,
FName Tag
)

  
Public function void

OnEvent ( const FEventClass& Event
)

  
Public function Static void

OnEvent ( UWorld* World,
const FEventClass& Event
)

  
Public function void

OnEventsBatch ( const TArray< FEventClass >& Events
)

  
Public function void  
Public function void

OnListenerForgetsActor ( const UAIPerceptionComponent& Listener,
AActor& ActorToForget
)

  
Public function void  
Protected function void

OnListenerRemoved ( const FPerceptionListener& UpdatedListener
)

  
Protected function void

OnListenerUpdate ( const FPerceptionListener& UpdatedListener
)

  
Protected function void

OnNewListener ( const FPerceptionListener& NewListener
)

  
Protected function Virtual void

OnNewPawn ( APawn& Pawn
)

  
Protected function UFunction void

OnPerceptionStimuliSourceEndPlay ( AActor* Actor,
EEndPlayReason::Type EndPlayReason
)

  
Protected function void  
Protected function Virtual void Iterates over all pawns and registeres them as a source for sense indicated by SenseID.
Public function void

RegisterDelayedStimulus ( FPerceptionListenerID ListenerId,
float Delay,
AActor* Instigator,
const FAIStimulus& Stimulus
)

  
Public function Static UFunction BlueprintCallable, Category, Meta bool

RegisterPerceptionStimuliSource ( UObject* WorldContextObject,
TSubclassOf< UAISense > Sense,
AActor* Target
)

  
Public function FAISenseID  
Public function void

RegisterSource ( AActor& SourceActor
)

 Registers given actor as a source for all registered senses
Public function void

RegisterSource ( AActor& SourceActor
)

 Registers a source of given sense's stimuli
Protected function void

RegisterSource ( FAISenseID SenseID,
AActor& SourceActor
)

 Requests registration of a given actor as a perception data source for specified sense
Public function void

RegisterSourceForSenseClass ( TSubclassOf< UAISense > Sense,
AActor& Target
)

  
Public function UFunction BlueprintCallable, Category void

ReportEvent ( UAISenseEvent* PerceptionEvent
)

  
Public function Static UFunction BlueprintCallable, Category, Meta void

ReportPerceptionEvent ( UObject* WorldContextObject,
UAISenseEvent* PerceptionEvent
)

  
Protected function Virtual void  
Public function void  
Public function void

UnregisterSource ( AActor& SourceActor,
const TSubclassOf< UAISense > Sense
)

 Unregisters given actor from the list of active stimuli sources
Public function void Registers listener if not registered

Overridden from UAISubsystem

  Type Name Description
Public function Virtual Const TStatId  
Public function Virtual void

Tick ( float DeltaTime
)

 FTickableGameObject begin.

Classes

  Type Name Description
Protected struct FDelayedStimulus    
Protected struct FPerceptionSourceRegistration    

Enums

  Type Name Description
Protected enum EDelayedStimulusSorting    

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