AIController

[anonymous_user_2dd84d5a]

Maybe you don’t have any PerceptionComponent?
try that before calling it:

*.cpp

if ensure(!GetPerceptionComponent()) {return;}

Why don’t you just use:

 PerceptionComponent = CreateDefaultSubobject<UAIPerceptionComponent>(TEXT("PerceptionComponent"));

I have edited the code to:

#include "AI_Bot_Controller.h"
#include "Perception/AIPerceptionComponent.h"
#include "Perception/AISenseConfig_Sight.h"

AAI_Bot_Controller::AAI_Bot_Controller()
{
    PrimaryActorTick.bCanEverTick = true;
    SightConfig = CreateDefaultSubobject<UAISenseConfig_Sight>(TEXT("Sight Config"));
    PerceptionComponent = CreateDefaultSubobject<UAIPerceptionComponent>(TEXT("PerceptionComponent"));
    //SetPerceptionComponent(*CreateDefaultSubobject<UAIPerceptionComponent>(TEXT("Perception Component")));

    AISightRadius = 500.0f;
    AISightAge = 5.0f;
    AILoseSightRadius = AISightRadius + 50.0f;
    AIFieldOfView = 90.0f;

    SightConfig->SightRadius = AISightRadius;
    SightConfig->LoseSightRadius = AILoseSightRadius;
    SightConfig->PeripheralVisionAngleDegrees = AIFieldOfView;
    SightConfig->SetMaxAge(AISightAge);

    SightConfig->DetectionByAffiliation.bDetectEnemies = true;
    SightConfig->DetectionByAffiliation.bDetectFriendlies = true;
    SightConfig->DetectionByAffiliation.bDetectNeutrals = true;

    GetPerceptionComponent()->SetDominantSense(*SightConfig->GetSenseImplementation());
    GetPerceptionComponent()->OnPerceptionUpdated.AddDynamic(this,&AAI_Bot_Controller::OnPawnDetected);
    GetPerceptionComponent()->ConfigureSense(*SightConfig);

}

void AAI_Bot_Controller::BeginPlay()
{
    Super::BeginPlay();
    if ensure(!GetPerceptionComponent()) { return; }
    if (GetPerceptionComponent() != nullptr)
    {
        UE_LOG(LogTemp, Warning, TEXT("All System Set"));
    }
    else
    {
        UE_LOG(LogTemp, Warning, TEXT("Some Problem"));
    }
}

void AAI_Bot_Controller::OnPossess(APawn* Pawn)
{
    Super::Possess(Pawn);
}

void AAI_Bot_Controller::Tick(float DeltaSeconds)
{
    Super::Tick(DeltaSeconds);
}

FRotator AAI_Bot_Controller::GetControlRotation() const
{
    if (GetPawn() == nullptr)
    {
        return FRotator(0.0f, 0.0f, 0.0f);
    }
    return FRotator(0.0f, GetPawn()->GetActorRotation().Yaw, 0.0f);
}

void AAI_Bot_Controller::OnPawnDetected(const TArray<AActor*>& DetectedPawns)
{
}

with the same error

Important detail the fail accrues here in UObjectArray.cpp
(I put a break point in BeginPlay and it crushed before)

int32 FUObjectArray::AllocateSerialNumber(int32 Index)
{
    FUObjectItem* ObjectItem = IndexToObject(Index);
    checkSlow(ObjectItem);

    volatile int32 *SerialNumberPtr = &ObjectItem->SerialNumber;
    int32 SerialNumber = *SerialNumberPtr;
    if (!SerialNumber)
    {
        SerialNumber = MasterSerialNumber.Increment();
        UE_CLOG(SerialNumber <= START_SERIAL_NUMBER, LogUObjectArray, Fatal, TEXT("UObject serial numbers overflowed (trying to allocate serial number %d)."), SerialNumber);
        int32 ValueWas = FPlatformAtomics::InterlockedCompareExchange((int32*)SerialNumberPtr, SerialNumber, 0);
        if (ValueWas != 0)
        {
            // someone else go it first, use their value
            SerialNumber = ValueWas;
        }
    }
    checkSlow(SerialNumber > START_SERIAL_NUMBER);
    return SerialNumber;
}