AEyeXActorBase* AEyeXPlayerController::FindBySweep(FHitResult& OutHit, const FSceneView* const View, const FVector2D& GazePoint,
const FCollisionObjectQueryParams& ObjectParams, const FCollisionQueryParams& TraceParams)
{
if (SweepIntervals <= 1)
{
UE_LOG(LogEyeX, Warning, TEXT("Invalid value for SweepIntervals: %i. Must be greater than 0."), SweepIntervals);
return nullptr;
}
UWorld* World = GetWorld();
if (!World) return nullptr;
FVector Start, Direction;
View->DeprojectFVector2D(GazePoint, Start, Direction);
const float TanFOVScaled = GetTanOfFOVAngleScaled();
// Perform sweeps
const float DeltaDistance = MaxDistance / SweepIntervals;
const FVector DeltaDirection = DeltaDistance * Direction;
float CurrentDistance = DeltaDistance / 2;
FCollisionShape Shape;
AEyeXActorBase* EyeXActor = nullptr;
for (int i = 0; i < SweepIntervals; ++i)
{
const FVector End = Start + DeltaDirection;
const float Radius = (i == 0) ? 0.0f : TanFOVScaled * CurrentDistance; // Depends on the view frustrum, size of the screen and the distance.
Shape.SetSphere(Radius);
if (World->SweepSingleByObjectType(OutHit, Start, End, FQuat::Identity, ObjectParams, Shape, TraceParams))
{
EyeXActor = Cast<AEyeXActorBase>(OutHit.GetActor());
break;
}
Start = End;
CurrentDistance += DeltaDistance;
}
VisualizeHit(bVisualizeDetection, World, OutHit, Shape.GetSphereRadius());
VisualizeGazePoint(bVisualizeDetection, World, Start);
return EyeXActor;
}
UCollision2PGeom::UCollision2PGeom(const FCollisionShape& CollisionShape)
{
switch (CollisionShape.ShapeType)
{
case ECollisionShape::Box:
{
new (Storage)PxBoxGeometry(U2PVector(CollisionShape.GetBox()));
break;
}
case ECollisionShape::Sphere:
{
new (Storage)PxSphereGeometry(CollisionShape.GetSphereRadius());
break;
}
case ECollisionShape::Capsule:
{
new (Storage)PxCapsuleGeometry(CollisionShape.GetCapsuleRadius(), CollisionShape.GetCapsuleAxisHalfLength());
break;
}
default:
// invalid point
ensure(false);
}
}
float UAISense_Aquaphobia::Update()
{
AIPerception::FListenerMap& ListenersMap = *GetListeners();
//For each listener who has this sense we're going to perform a sweep to determine nearby aqua actors
for (auto& Elem : ListenersMap)
{
//Get the listener
FPerceptionListener Listener = Elem.Value;
const AActor* ListenerBodyActor = Listener.GetBodyActor();
for (int32 DigestedPropertyIndex = 0; DigestedPropertyIndex < DigestedProperties.Num(); DigestedPropertyIndex++)
{
//Create the sphere for this sense and perform the sweep to determine nearby actors
FCollisionShape CollisionSphere = FCollisionShape::MakeSphere(DigestedProperties[DigestedPropertyIndex].PhobiaRadius);
TArray<FHitResult> HitResults;
GetWorld()->SweepMultiByChannel(HitResults, ListenerBodyActor->GetActorLocation(), ListenerBodyActor->GetActorLocation() + FVector::UpVector*CollisionSphere.GetSphereRadius(), FQuat(), ECollisionChannel::ECC_WorldDynamic, CollisionSphere);
//Draw debug sphere if we have activated it via the config
if (DigestedProperties[DigestedPropertyIndex].bDisplayDebugSphere)
{
DrawDebugSphere(GetWorld(), ListenerBodyActor->GetActorLocation(), DigestedProperties[DigestedPropertyIndex].PhobiaRadius, 8, FColor::Blue, false, 30.f, 1, 2.f);
}
//Check hit results for aqua actors
for (int32 i = 0; i < HitResults.Num(); i++)
{
FHitResult hit = HitResults[i];
//To simplify things, we're going to assume that "water resources" for this post are actors that have the following game tag
if (hit.GetActor()->ActorHasTag(FName("AquaActor")))
{
if ((hit.GetActor()->GetActorLocation() - ListenerBodyActor->GetActorLocation()).Size() <= DigestedProperties[DigestedPropertyIndex].PhobiaRadius)
{
Elem.Value.RegisterStimulus(hit.GetActor(), FAIStimulus(*this, 5.f, hit.GetActor()->GetActorLocation(), ListenerBodyActor->GetActorLocation()));
GLog->Log("registered stimulus!");
}
}
}
}
}
//Time until next update; in this case we're forcing the update to happen in each frame
return 0.f;
}