Untitled

//.h

UFUNCTION(BlueprintCallable)
void MyRayTrace(float InteractRange, ECollisionChannel TraceChannel, AActor* SelfActor, FHitResult& HitOut);


// .cpp
void APBaseCharacter::MyRayTrace(float InteractRange,
    ECollisionChannel TraceChannel,
    AActor* SelfActor, FHitResult& HitOut)
{
    FCollisionQueryParams MyQueryParams = FCollisionQueryParams::DefaultQueryParam;
    MyQueryParams.AddIgnoredActor(SelfActor);


    FVector Location;
    FRotator Rotation;
    FHitResult Hit;

    GetController()->GetPlayerViewPoint(Location, Rotation);

    FVector Start = Location;
    FVector End = Start + (Rotation.Vector() * InteractRange);

    bool bHit = GetWorld()->LineTraceSingleByChannel(Hit, Start, End, TraceChannel, MyQueryParams);

    if (bHit)
    {
        HitOut = Hit;
    }

}