C++ FVector函数代码示例

void UCheatManager::Summon( const FString& ClassName )
{
	UE_LOG(LogCheatManager, Log,  TEXT("Fabricate %s"), *ClassName );

	bool bIsValidClassName = true;
	FString FailureReason;
	if ( ClassName.Contains(TEXT(" ")) )
	{
		FailureReason = FString::Printf(TEXT("ClassName contains a space."));
		bIsValidClassName = false;
	}
	else if ( !FPackageName::IsShortPackageName(ClassName) )
	{
		if ( ClassName.Contains(TEXT(".")) )
		{
			FString PackageName;
			FString ObjectName;
			ClassName.Split(TEXT("."), &PackageName, &ObjectName);

			const bool bIncludeReadOnlyRoots = true;
			FText Reason;
			if ( !FPackageName::IsValidLongPackageName(PackageName, bIncludeReadOnlyRoots, &Reason) )
			{
				FailureReason = Reason.ToString();
				bIsValidClassName = false;
			}
		}
		else
		{
			FailureReason = TEXT("Class names with a path must contain a dot. (i.e /Script/Engine.StaticMeshActor)");
			bIsValidClassName = false;
		}
	}

	bool bSpawnedActor = false;
	if ( bIsValidClassName )
	{
		UClass* NewClass = NULL;
		if ( FPackageName::IsShortPackageName(ClassName) )
		{
			NewClass = FindObject<UClass>(ANY_PACKAGE, *ClassName);
		}
		else
		{
			NewClass = FindObject<UClass>(NULL, *ClassName);
		}

		if( NewClass )
		{
			if ( NewClass->IsChildOf(AActor::StaticClass()) )
			{
				APlayerController* const MyPlayerController = GetOuterAPlayerController();
				if(MyPlayerController)
				{
					FRotator const SpawnRot = MyPlayerController->GetControlRotation();
					FVector SpawnLoc = MyPlayerController->GetFocalLocation();

					SpawnLoc += 72.f * SpawnRot.Vector() + FVector(0.f, 0.f, 1.f) * 15.f;
					FActorSpawnParameters SpawnInfo;
					SpawnInfo.Instigator = MyPlayerController->Instigator;
					AActor* Actor = GetWorld()->SpawnActor(NewClass, &SpawnLoc, &SpawnRot, SpawnInfo );
					if ( Actor )
					{
						bSpawnedActor = true;
					}
					else
					{
						FailureReason = TEXT("SpawnActor failed.");
						bSpawnedActor = false;
					}
				}
			}
			else
			{
				FailureReason = TEXT("Class is not derived from Actor.");
				bSpawnedActor = false;
			}
		}
		else
		{
			FailureReason = TEXT("Failed to find class.");
			bSpawnedActor = false;
		}
	}
	
	if ( !bSpawnedActor )
	{
		UE_LOG(LogCheatManager, Warning, TEXT("Failed to summon %s. Reason: %s"), *ClassName, *FailureReason);
	}
}

FVector UKismetMathLibrary::Conv_FloatToVector(float InFloat)
{
	return FVector(InFloat);
}

void UKismetMathLibrary::MinimumAreaRectangle(class UObject* WorldContextObject, const TArray<FVector>& InVerts, const FVector& SampleSurfaceNormal, FVector& OutRectCenter, FRotator& OutRectRotation, float& OutSideLengthX, float& OutSideLengthY, bool bDebugDraw)
{
	float MinArea = -1.f;
	float CurrentArea = -1.f;
	FVector SupportVectorA, SupportVectorB;
	FVector RectSideA, RectSideB;
	float MinDotResultA, MinDotResultB, MaxDotResultA, MaxDotResultB;
	FVector TestEdge;
	float TestEdgeDot = 0.f;
	FVector PolyNormal(0.f, 0.f, 1.f);
	TArray<int32> PolyVertIndices;

	// Bail if we receive an empty InVerts array
	if( InVerts.Num() == 0 )
	{
		return;
	}

	// Compute the approximate normal of the poly, using the direction of SampleSurfaceNormal for guidance
	PolyNormal = (InVerts[InVerts.Num() / 3] - InVerts[0]) ^ (InVerts[InVerts.Num() * 2 / 3] - InVerts[InVerts.Num() / 3]);
	if( (PolyNormal | SampleSurfaceNormal) < 0.f )
	{
		PolyNormal = -PolyNormal;
	}

	// Transform the sample points to 2D
	FMatrix SurfaceNormalMatrix = FRotationMatrix::MakeFromZX(PolyNormal, FVector(1.f, 0.f, 0.f));
	TArray<FVector> TransformedVerts;
	OutRectCenter = FVector(0.f);
	for( int32 Idx = 0; Idx < InVerts.Num(); ++Idx )
	{
		OutRectCenter += InVerts[Idx];
		TransformedVerts.Add(SurfaceNormalMatrix.InverseTransformVector(InVerts[Idx]));
	}
	OutRectCenter /= InVerts.Num();

	// Compute the convex hull of the sample points
	ConvexHull2D::ComputeConvexHull(TransformedVerts, PolyVertIndices);

	// Minimum area rectangle as computed by http://www.geometrictools.com/Documentation/MinimumAreaRectangle.pdf
	for( int32 Idx = 1; Idx < PolyVertIndices.Num() - 1; ++Idx )
	{
		SupportVectorA = (TransformedVerts[PolyVertIndices[Idx]] - TransformedVerts[PolyVertIndices[Idx-1]]).GetSafeNormal();
		SupportVectorA.Z = 0.f;
		SupportVectorB.X = -SupportVectorA.Y;
		SupportVectorB.Y = SupportVectorA.X;
		SupportVectorB.Z = 0.f;
		MinDotResultA = MinDotResultB = MaxDotResultA = MaxDotResultB = 0.f;

		for (int TestVertIdx = 1; TestVertIdx < PolyVertIndices.Num(); ++TestVertIdx )
		{
			TestEdge = TransformedVerts[PolyVertIndices[TestVertIdx]] - TransformedVerts[PolyVertIndices[0]];
			TestEdgeDot = SupportVectorA | TestEdge;
			if( TestEdgeDot < MinDotResultA )
			{
				MinDotResultA = TestEdgeDot;
			}
			else if(TestEdgeDot > MaxDotResultA )
			{
				MaxDotResultA = TestEdgeDot;
			}

			TestEdgeDot = SupportVectorB | TestEdge;
			if( TestEdgeDot < MinDotResultB )
			{
				MinDotResultB = TestEdgeDot;
			}
			else if( TestEdgeDot > MaxDotResultB )
			{
				MaxDotResultB = TestEdgeDot;
			}
		}

		CurrentArea = (MaxDotResultA - MinDotResultA) * (MaxDotResultB - MinDotResultB);
		if( MinArea < 0.f || CurrentArea < MinArea )
		{
			MinArea = CurrentArea;
			RectSideA = SupportVectorA * (MaxDotResultA - MinDotResultA);
			RectSideB = SupportVectorB * (MaxDotResultB - MinDotResultB);
		}
	}

	RectSideA = SurfaceNormalMatrix.TransformVector(RectSideA);
	RectSideB = SurfaceNormalMatrix.TransformVector(RectSideB);
	OutRectRotation = FRotationMatrix::MakeFromZX(PolyNormal, RectSideA).Rotator();
	OutSideLengthX = RectSideA.Size();
	OutSideLengthY = RectSideB.Size();

	if( bDebugDraw )
	{
		UWorld* World = GEngine->GetWorldFromContextObject(WorldContextObject);
		if(World != nullptr)
		{
			DrawDebugSphere(World, OutRectCenter, 10.f, 12, FColor::Yellow, true);
			DrawDebugCoordinateSystem(World, OutRectCenter, SurfaceNormalMatrix.Rotator(), 100.f, true);
			DrawDebugLine(World, OutRectCenter - RectSideA * 0.5f + FVector(0,0,10.f), OutRectCenter + RectSideA * 0.5f + FVector(0,0,10.f), FColor::Green, true,-1, 0, 5.f);
			DrawDebugLine(World, OutRectCenter - RectSideB * 0.5f + FVector(0,0,10.f), OutRectCenter + RectSideB * 0.5f + FVector(0,0,10.f), FColor::Blue, true,-1, 0, 5.f);
		}
	}
}

void AJetpackItem::ClothingPress(APlayerCharacter *player) {
    player1 = player;
    isFlying = true;
    
    player->GetCharacterMovement()->AddImpulse(FVector(0, 0, 350.0f));
}

AARCharacter::AARCharacter(const class FPostConstructInitializeProperties& PCIP)
	: Super(PCIP)
{
	// Set size for collision capsule
	CapsuleComponent->InitCapsuleSize(42.f, 96.0f);
	IsCharacterTurningYaw = false;
	//LowOffset = FVector(-380.0f, 35.0f, 15.0f);
	//MidOffset = FVector(-380.0f, 35.0f, 60.0f);
	//HighOffset = FVector(-380.0f, 35.0f, 150.0f); //x,y,z

	CameraBoom = PCIP.CreateDefaultSubobject<USpringArmComponent>(this, TEXT("CameraBoom"));
	CameraBoom->AttachTo(CapsuleComponent);
	CameraBoom->TargetArmLength = 300.0f; // The camera follows at this distance behind the character
	CameraBoom->bUseControllerViewRotation = true; // Rotate the arm based on the controller
	CameraBoom->SocketOffset = FVector(0.0f, 50.0f, 100.0f);
	// Create a follow camera
	FollowCamera = PCIP.CreateDefaultSubobject<UCameraComponent>(this, TEXT("FollowCamera"));
	FollowCamera->AttachTo(CameraBoom, USpringArmComponent::SocketName); // Attach the camera to the end of the boom and let the boom adjust to match the controller orientation
	FollowCamera->bUseControllerViewRotation = false; // Camera does not rotate relative to arm

	bReplicates = true;
	// Don't rotate when the controller rotates. Let that just affect the camera.
	bUseControllerRotationPitch = false;
	bUseControllerRotationYaw = true;
	bUseControllerRotationRoll = false;

	// Configure character movement
	CharacterMovement->bOrientRotationToMovement = true; // Character moves in the direction of input...	
	CharacterMovement->RotationRate = FRotator(0.0f, 540.0f, 0.0f); // ...at this rotation rate
	CharacterMovement->JumpZVelocity = 600.f;
	CharacterMovement->AirControl = 0.2f;

	Attributes = PCIP.CreateDefaultSubobject<UARAttributeComponent>(this, TEXT("Attributes"));
	Attributes->Activate();
	Attributes->bAutoRegister = true;
	Attributes->SetIsReplicated(true);

	Equipment = PCIP.CreateDefaultSubobject<UAREquipmentComponent>(this, TEXT("Equipment"));
	Equipment->Activate();
	Equipment->bAutoRegister = true;
	//Equipment->GetNetAddressable();
	Equipment->SetIsReplicated(true);

	Abilities = PCIP.CreateDefaultSubobject<UARAbilityComponent>(this, TEXT("Abilities"));
	Abilities->Activate();
	Abilities->bAutoRegister = true;
	//Equipment->GetNetAddressable();
	Abilities->SetIsReplicated(true);

	HeadMesh = PCIP.CreateDefaultSubobject<USkeletalMeshComponent>(this, TEXT("HeadMesh"));
	HeadMesh->AttachParent = Mesh;
	HeadMesh->SetMasterPoseComponent(Mesh);

	ShoulderMesh = PCIP.CreateDefaultSubobject<USkeletalMeshComponent>(this, TEXT("ShoulderMesh"));
	ShoulderMesh->AttachParent = Mesh;
	ShoulderMesh->SetMasterPoseComponent(Mesh);

	ChestMesh = PCIP.CreateDefaultSubobject<USkeletalMeshComponent>(this, TEXT("ChestMesh"));
	ChestMesh->AttachParent = Mesh;
	ChestMesh->SetMasterPoseComponent(Mesh);

	LegsMesh = PCIP.CreateDefaultSubobject<USkeletalMeshComponent>(this, TEXT("LegsMesh"));
	LegsMesh->AttachParent = Mesh;
	LegsMesh->SetMasterPoseComponent(Mesh);
	
	HandsMesh = PCIP.CreateDefaultSubobject<USkeletalMeshComponent>(this, TEXT("HandsMesh"));
	HandsMesh->AttachParent = Mesh;
	HandsMesh->SetMasterPoseComponent(Mesh);

	FootMesh = PCIP.CreateDefaultSubobject<USkeletalMeshComponent>(this, TEXT("FootMesh"));
	FootMesh->AttachParent = Mesh;
	FootMesh->SetMasterPoseComponent(Mesh);
	//SetRootComponent(Mesh);
}

void AWizardsCharacter::OnFire()
{
	if (!mySpellBook.IsValidIndex(0)) {
		UE_LOG(LogTemp, Warning, TEXT("Spell Gathering Needed!"));
		newCharactersSpells();
	}
	if (Mana > mySpellBook[currSpell].spellCost) {
		Mana -= mySpellBook[currSpell].spellCost;
		// try and fire a projectile

		if (mySpellBook[currSpell].spellType == 0)
		{
			const FRotator SpawnRotation = GetControlRotation();
			const FVector SpawnLocation = GetActorLocation() + SpawnRotation.RotateVector(GunOffset);

			UWorld* const World = GetWorld();
			if (World)
			{
				// spawn the projectile at the muzzle
				/*UParticleSystem* projParticle = particleList[mySpellBook[currSpell].spellEffect + mySpellBook[currSpell].spellType * 5];
				UParticleSystem* blastParticle = particleList[mySpellBook[currSpell].spellEffect + 5];
				AWizardsProjectile* wizardsSpell = World->SpawnActor<AWizardsProjectile>(ProjectileClass, SpawnLocation, SpawnRotation);// , myparams);
				wizardsSpell->SpellCreation(&mySpellBook[currSpell], projParticle, blastParticle, this);*/
				if (Role < ROLE_Authority)
				{
					ServerFireProjectile(mySpellBook[currSpell], SpawnRotation, SpawnLocation);//mySpellBook[currSpell]);
				}
				else {
					ClientFireProjectile(mySpellBook[currSpell], SpawnRotation, SpawnLocation);
				}
			}
		}
		else if (mySpellBook[currSpell].spellType == 1) {
			const FRotator SpawnRotation = FRotator(0.0);//GetControlRotation();
														 // MuzzleOffset is in camera space, so transform it to world space before offsetting from the character location to find the final muzzle position
			const FVector SpawnLocation = FVector(0.0);//GetActorLocation() + SpawnRotation.RotateVector(GunOffset);

			UWorld* const World = GetWorld();
			if (World)
			{
				// spawn the projectile at the muzzle
				/*UParticleSystem* blastParticle = particleList[mySpellBook[currSpell].spellEffect + mySpellBook[currSpell].spellType * 5];
				AWizardsBlast* wizardsSpell = World->SpawnActor<AWizardsBlast>(BlastClass, SpawnLocation, SpawnRotation);// , myparams);
				wizardsSpell->SpellCreation(blastParticle, mySpellBook[currSpell].spellSize, mySpellBook[currSpell].spellDamage, this);
				wizardsSpell->AttachRootComponentTo(GetCapsuleComponent());//Probably useful for Blasts, Rays, and Conical attacks*/
				if (Role < ROLE_Authority)
				{
					ServerFireProjectile(mySpellBook[currSpell], SpawnRotation, SpawnLocation);
				}
				else {
					ClientFireProjectile(mySpellBook[currSpell], SpawnRotation, SpawnLocation);
				}
			}
		}
		else if (mySpellBook[currSpell].spellType == 2) {
			const FRotator SpawnRotation = FRotator(0.0);//GetControlRotation();
														 // MuzzleOffset is in camera space, so transform it to world space before offsetting from the character location to find the final muzzle position
			const FVector SpawnLocation = FVector(0.0);//GetActorLocation() + SpawnRotation.RotateVector(GunOffset);

			UWorld* const World = GetWorld();
			if (World)
			{
				// spawn the projectile at the muzzle
				/*UParticleSystem* coneParticle = particleList[mySpellBook[currSpell].spellEffect + mySpellBook[currSpell].spellType * 5];
				AWizardsCone* wizardsCone = World->SpawnActor<AWizardsCone>(ConeClass, SpawnLocation, SpawnRotation);// , myparams);
				wizardsCone->SpellCreation(coneParticle, mySpellBook[currSpell].spellSize, mySpellBook[currSpell].spellDamage, this);
				wizardsCone->AttachRootComponentTo(GetCapsuleComponent());//Probably useful for Blasts, Rays, and Conical attacks
				activeAttack = Cast<AActor>(wizardsCone);*/
				if (Role < ROLE_Authority)
				{
					ServerFireProjectile(mySpellBook[currSpell], SpawnRotation, SpawnLocation);
				}
				else {
					ClientFireProjectile(mySpellBook[currSpell], SpawnRotation, SpawnLocation);
				}
			}
		}
		// God this sound is so annoying
		/*if (FireSound != NULL)
		{
		UGameplayStatics::PlaySoundAtLocation(this, FireSound, GetActorLocation());
		}*/

		// try and play a firing animation if specified
		if (FireAnimation != NULL)
		{
			// Get the animation object for the arms mesh
			UAnimInstance* AnimInstance = Mesh1P->GetAnimInstance();
			if (AnimInstance != NULL)
			{
				AnimInstance->Montage_Play(FireAnimation, 1.f);
			}
		}

	}
}

	void Pointify(const FInterpCurveVector& SplineInfo, TArray<FLandscapeSplineInterpPoint>& Points, int32 NumSubdivisions,
		float StartFalloffFraction, float EndFalloffFraction,
		const float StartWidth, const float EndWidth,
		const float StartSideFalloff, const float EndSideFalloff,
		const float StartRollDegrees, const float EndRollDegrees)
	{
		// Stop the start and end fall-off overlapping
		const float TotalFalloff = StartFalloffFraction + EndFalloffFraction;
		if (TotalFalloff > 1.0f)
		{
			StartFalloffFraction /= TotalFalloff;
			EndFalloffFraction /= TotalFalloff;
		}

		const float StartRoll = FMath::DegreesToRadians(StartRollDegrees);
		const float EndRoll = FMath::DegreesToRadians(EndRollDegrees);

		float OldKeyTime = 0;
		for (int32 i = 0; i < SplineInfo.Points.Num(); i++)
		{
			const float NewKeyTime = SplineInfo.Points[i].InVal;
			const float NewKeyCosInterp = 0.5f - 0.5f * FMath::Cos(NewKeyTime * PI);
			const float NewKeyWidth = FMath::Lerp(StartWidth, EndWidth, NewKeyCosInterp);
			const float NewKeyFalloff = FMath::Lerp(StartSideFalloff, EndSideFalloff, NewKeyCosInterp);
			const float NewKeyRoll = FMath::Lerp(StartRoll, EndRoll, NewKeyCosInterp);
			const FVector NewKeyPos = SplineInfo.Eval(NewKeyTime, FVector::ZeroVector);
			const FVector NewKeyTangent = SplineInfo.EvalDerivative(NewKeyTime, FVector::ZeroVector).GetSafeNormal();
			const FVector NewKeyBiNormal = FQuat(NewKeyTangent, -NewKeyRoll).RotateVector((NewKeyTangent ^ FVector(0, 0, -1)).GetSafeNormal());
			const FVector NewKeyLeftPos = NewKeyPos - NewKeyBiNormal * NewKeyWidth;
			const FVector NewKeyRightPos = NewKeyPos + NewKeyBiNormal * NewKeyWidth;
			const FVector NewKeyFalloffLeftPos = NewKeyPos - NewKeyBiNormal * (NewKeyWidth + NewKeyFalloff);
			const FVector NewKeyFalloffRightPos = NewKeyPos + NewKeyBiNormal * (NewKeyWidth + NewKeyFalloff);
			const float NewKeyStartEndFalloff = FMath::Min((StartFalloffFraction > 0 ? NewKeyTime / StartFalloffFraction : 1.0f), (EndFalloffFraction > 0 ? (1 - NewKeyTime) / EndFalloffFraction : 1.0f));

			// If not the first keypoint, interp from the last keypoint.
			if (i > 0)
			{
				const int32 NumSteps = FMath::CeilToInt((NewKeyTime - OldKeyTime) * NumSubdivisions);
				const float DrawSubstep = (NewKeyTime - OldKeyTime) / NumSteps;

				// Add a point for each substep, except the ends because that's the point added outside the interp'ing.
				for (int32 j = 1; j < NumSteps; j++)
				{
					const float NewTime = OldKeyTime + j*DrawSubstep;
					const float NewCosInterp = 0.5f - 0.5f * FMath::Cos(NewTime * PI);
					const float NewWidth = FMath::Lerp(StartWidth, EndWidth, NewCosInterp);
					const float NewFalloff = FMath::Lerp(StartSideFalloff, EndSideFalloff, NewCosInterp);
					const float NewRoll = FMath::Lerp(StartRoll, EndRoll, NewCosInterp);
					const FVector NewPos = SplineInfo.Eval(NewTime, FVector::ZeroVector);
					const FVector NewTangent = SplineInfo.EvalDerivative(NewTime, FVector::ZeroVector).GetSafeNormal();
					const FVector NewBiNormal = FQuat(NewTangent, -NewRoll).RotateVector((NewTangent ^ FVector(0, 0, -1)).GetSafeNormal());
					const FVector NewLeftPos = NewPos - NewBiNormal * NewWidth;
					const FVector NewRightPos = NewPos + NewBiNormal * NewWidth;
					const FVector NewFalloffLeftPos = NewPos - NewBiNormal * (NewWidth + NewFalloff);
					const FVector NewFalloffRightPos = NewPos + NewBiNormal * (NewWidth + NewFalloff);
					const float NewStartEndFalloff = FMath::Min((StartFalloffFraction > 0 ? NewTime / StartFalloffFraction : 1.0f), (EndFalloffFraction > 0 ? (1 - NewTime) / EndFalloffFraction : 1.0f));

					Points.Emplace(NewPos, NewLeftPos, NewRightPos, NewFalloffLeftPos, NewFalloffRightPos, NewStartEndFalloff);
				}
			}

			Points.Emplace(NewKeyPos, NewKeyLeftPos, NewKeyRightPos, NewKeyFalloffLeftPos, NewKeyFalloffRightPos, NewKeyStartEndFalloff);

			OldKeyTime = NewKeyTime;
		}

		// Handle self-intersection errors due to tight turns
		FixSelfIntersection(Points, &FLandscapeSplineInterpPoint::Left);
		FixSelfIntersection(Points, &FLandscapeSplineInterpPoint::Right);
		FixSelfIntersection(Points, &FLandscapeSplineInterpPoint::FalloffLeft);
		FixSelfIntersection(Points, &FLandscapeSplineInterpPoint::FalloffRight);
	}

float AWheeledVehicleAIController::CalcStreeringValue(FVector &direction)
{
  float steering = 0;
  FVector BoxExtent = Vehicle->GetVehicleBoundsExtent();
  FVector forward = Vehicle->GetActorForwardVector();

  FVector rightSensorPosition(BoxExtent.X / 2.0f, (BoxExtent.Y / 2.0f) + 100.0f, 0.0f);
  FVector leftSensorPosition(BoxExtent.X / 2.0f, -(BoxExtent.Y / 2.0f) - 100.0f, 0.0f);

  float forwardMagnitude = BoxExtent.X / 2.0f;

  float Magnitude = (float) sqrt(pow((double) leftSensorPosition.X, 2.0) + pow((double) leftSensorPosition.Y, 2.0));

  //same for the right and left
  float offset = FGenericPlatformMath::Acos(forwardMagnitude / Magnitude);

  float actorAngle = forward.UnitCartesianToSpherical().Y;

  float sinR = FGenericPlatformMath::Sin(actorAngle + offset);
  float cosR = FGenericPlatformMath::Cos(actorAngle + offset);

  float sinL = FGenericPlatformMath::Sin(actorAngle - offset);
  float cosL = FGenericPlatformMath::Cos(actorAngle - offset);

  rightSensorPosition.Y = sinR * Magnitude;
  rightSensorPosition.X = cosR * Magnitude;

  leftSensorPosition.Y = sinL * Magnitude;
  leftSensorPosition.X = cosL * Magnitude;

  FVector rightPositon = GetPawn()->GetActorLocation() + FVector(rightSensorPosition.X, rightSensorPosition.Y, 0.0f);
  FVector leftPosition = GetPawn()->GetActorLocation() + FVector(leftSensorPosition.X, leftSensorPosition.Y, 0.0f);

  FRoadMapPixelData rightRoadData = RoadMap->GetDataAt(rightPositon);
  if (!rightRoadData.IsRoad()) { steering -= 0.2f;}

  FRoadMapPixelData leftRoadData = RoadMap->GetDataAt(leftPosition);
  if (!leftRoadData.IsRoad()) { steering += 0.2f;}

  FRoadMapPixelData roadData = RoadMap->GetDataAt(GetPawn()->GetActorLocation());
  if (!roadData.IsRoad()) {
    steering = -1;
  } else if (roadData.HasDirection()) {

    direction = roadData.GetDirection();
    FVector right = rightRoadData.GetDirection();
    FVector left = leftRoadData.GetDirection();

    forward.Z = 0.0f;

    float dirAngle = direction.UnitCartesianToSpherical().Y;
    float rightAngle = right.UnitCartesianToSpherical().Y;
    float leftAngle = left.UnitCartesianToSpherical().Y;

    dirAngle *= (180.0f / PI);
    rightAngle *= (180.0 / PI);
    leftAngle *= (180.0 / PI);
    actorAngle *= (180.0 / PI);

    float min = dirAngle - 90.0f;
    if (min < -180.0f) { min = 180.0f + (min + 180.0f);}

    float max = dirAngle + 90.0f;
    if (max > 180.0f) { max = -180.0f + (max - 180.0f);}

    if (dirAngle < -90.0 || dirAngle > 90.0) {
      if (rightAngle < min && rightAngle > max) { steering -= 0.2f;}
      if (leftAngle < min && leftAngle > max) { steering += 0.2f;}
    } else {
      if (rightAngle < min || rightAngle > max) { steering -= 0.2f;}
      if (leftAngle < min || leftAngle > max) { steering += 0.2f;}
    }

    float angle = dirAngle - actorAngle;

    if (angle > 180.0f) { angle -= 360.0f;} else if (angle < -180.0f) {
      angle += 360.0f;
    }

    if (angle < -MaximumSteerAngle) {
      steering = -1.0f;
    } else if (angle > MaximumSteerAngle) {
      steering = 1.0f;
    } else {
      steering += angle / MaximumSteerAngle;
    }
  }

  Vehicle->SetAIVehicleState(ECarlaWheeledVehicleState::FreeDriving);
  return steering;
}

void RasterizeSegmentHeight(int32& MinX, int32& MinY, int32& MaxX, int32& MaxY, FLandscapeEditDataInterface& LandscapeEdit, const TArray<FLandscapeSplineInterpPoint>& Points, bool bRaiseTerrain, bool bLowerTerrain, TSet<ULandscapeComponent*>& ModifiedComponents)
{
	if (!(bRaiseTerrain || bLowerTerrain))
	{
		return;
	}

	if (MinX > MaxX || MinY > MaxY)
	{
		return;
	}

	TArray<uint16> Data;
	Data.AddZeroed((1 + MaxY - MinY) * (1 + MaxX - MinX));

	int32 ValidMinX = MinX;
	int32 ValidMinY = MinY;
	int32 ValidMaxX = MaxX;
	int32 ValidMaxY = MaxY;
	LandscapeEdit.GetHeightData(ValidMinX, ValidMinY, ValidMaxX, ValidMaxY, Data.GetData(), 0);

	if (ValidMinX > ValidMaxX || ValidMinY > ValidMaxY)
	{
		// The segment's bounds don't intersect any data, so skip it
		MinX = ValidMinX;
		MinY = ValidMinY;
		MaxX = ValidMaxX;
		MaxY = ValidMaxY;

		return;
	}

	FLandscapeEditDataInterface::ShrinkData(Data, MinX, MinY, MaxX, MaxY, ValidMinX, ValidMinY, ValidMaxX, ValidMaxY);

	MinX = ValidMinX;
	MinY = ValidMinY;
	MaxX = ValidMaxX;
	MaxY = ValidMaxY;

	FTriangleRasterizer<FLandscapeSplineHeightsRasterPolicy> Rasterizer(
		FLandscapeSplineHeightsRasterPolicy(Data, MinX, MinY, MaxX, MaxY, bRaiseTerrain, bLowerTerrain));

	for (int32 j = 1; j < Points.Num(); j++)
	{
		// Middle
		FVector2D Left0Pos = FVector2D(Points[j - 1].Left);
		FVector2D Right0Pos = FVector2D(Points[j - 1].Right);
		FVector2D Left1Pos = FVector2D(Points[j].Left);
		FVector2D Right1Pos = FVector2D(Points[j].Right);
		FVector Left0 = FVector(1.0f, Points[j - 1].StartEndFalloff, Points[j - 1].Left.Z);
		FVector Right0 = FVector(1.0f, Points[j - 1].StartEndFalloff, Points[j - 1].Right.Z);
		FVector Left1 = FVector(1.0f, Points[j].StartEndFalloff, Points[j].Left.Z);
		FVector Right1 = FVector(1.0f, Points[j].StartEndFalloff, Points[j].Right.Z);
		Rasterizer.DrawTriangle(Left0, Right0, Left1, Left0Pos, Right0Pos, Left1Pos, false);
		Rasterizer.DrawTriangle(Right0, Left1, Right1, Right0Pos, Left1Pos, Right1Pos, false);

		// Left Falloff
		FVector2D FalloffLeft0Pos = FVector2D(Points[j - 1].FalloffLeft);
		FVector2D FalloffLeft1Pos = FVector2D(Points[j].FalloffLeft);
		FVector FalloffLeft0 = FVector(0.0f, Points[j - 1].StartEndFalloff, Points[j - 1].FalloffLeft.Z);
		FVector FalloffLeft1 = FVector(0.0f, Points[j].StartEndFalloff, Points[j].FalloffLeft.Z);
		Rasterizer.DrawTriangle(FalloffLeft0, Left0, FalloffLeft1, FalloffLeft0Pos, Left0Pos, FalloffLeft1Pos, false);
		Rasterizer.DrawTriangle(Left0, FalloffLeft1, Left1, Left0Pos, FalloffLeft1Pos, Left1Pos, false);

		// Right Falloff
		FVector2D FalloffRight0Pos = FVector2D(Points[j - 1].FalloffRight);
		FVector2D FalloffRight1Pos = FVector2D(Points[j].FalloffRight);
		FVector FalloffRight0 = FVector(0.0f, Points[j - 1].StartEndFalloff, Points[j - 1].FalloffRight.Z);
		FVector FalloffRight1 = FVector(0.0f, Points[j].StartEndFalloff, Points[j].FalloffRight.Z);
		Rasterizer.DrawTriangle(Right0, FalloffRight0, Right1, Right0Pos, FalloffRight0Pos, Right1Pos, false);
		Rasterizer.DrawTriangle(FalloffRight0, Right1, FalloffRight1, FalloffRight0Pos, Right1Pos, FalloffRight1Pos, false);
	}

	LandscapeEdit.SetHeightData(MinX, MinY, MaxX, MaxY, Data.GetData(), 0, true);
	LandscapeEdit.GetComponentsInRegion(MinX, MinY, MaxX, MaxY, &ModifiedComponents);
}

void RasterizeSegmentAlpha(int32& MinX, int32& MinY, int32& MaxX, int32& MaxY, FLandscapeEditDataInterface& LandscapeEdit, const TArray<FLandscapeSplineInterpPoint>& Points, ULandscapeLayerInfoObject* LayerInfo, TSet<ULandscapeComponent*>& ModifiedComponents)
{
	if (LayerInfo == nullptr)
	{
		return;
	}

	if (MinX > MaxX || MinY > MaxY)
	{
		return;
	}

	TArray<uint8> Data;
	Data.AddZeroed((1 + MaxY - MinY) * (1 + MaxX - MinX));

	int32 ValidMinX = MinX;
	int32 ValidMinY = MinY;
	int32 ValidMaxX = MaxX;
	int32 ValidMaxY = MaxY;
	LandscapeEdit.GetWeightData(LayerInfo, ValidMinX, ValidMinY, ValidMaxX, ValidMaxY, Data.GetData(), 0);

	if (ValidMinX > ValidMaxX || ValidMinY > ValidMaxY)
	{
		// The segment's bounds don't intersect any data, so skip it
		MinX = ValidMinX;
		MinY = ValidMinY;
		MaxX = ValidMaxX;
		MaxY = ValidMaxY;

		return;
	}

	FLandscapeEditDataInterface::ShrinkData(Data, MinX, MinY, MaxX, MaxY, ValidMinX, ValidMinY, ValidMaxX, ValidMaxY);

	MinX = ValidMinX;
	MinY = ValidMinY;
	MaxX = ValidMaxX;
	MaxY = ValidMaxY;

	FTriangleRasterizer<FLandscapeSplineBlendmaskRasterPolicy> Rasterizer(
		FLandscapeSplineBlendmaskRasterPolicy(Data, MinX, MinY, MaxX, MaxY));

	const float BlendValue = 255;

	for (int32 j = 1; j < Points.Num(); j++)
	{
		// Middle
		FVector2D Left0Pos = FVector2D(Points[j - 1].Left);
		FVector2D Right0Pos = FVector2D(Points[j - 1].Right);
		FVector2D Left1Pos = FVector2D(Points[j].Left);
		FVector2D Right1Pos = FVector2D(Points[j].Right);
		FVector Left0 = FVector(1.0f, Points[j - 1].StartEndFalloff, BlendValue);
		FVector Right0 = FVector(1.0f, Points[j - 1].StartEndFalloff, BlendValue);
		FVector Left1 = FVector(1.0f, Points[j].StartEndFalloff, BlendValue);
		FVector Right1 = FVector(1.0f, Points[j].StartEndFalloff, BlendValue);
		Rasterizer.DrawTriangle(Left0, Right0, Left1, Left0Pos, Right0Pos, Left1Pos, false);
		Rasterizer.DrawTriangle(Right0, Left1, Right1, Right0Pos, Left1Pos, Right1Pos, false);

		// Left Falloff
		FVector2D FalloffLeft0Pos = FVector2D(Points[j - 1].FalloffLeft);
		FVector2D FalloffLeft1Pos = FVector2D(Points[j].FalloffLeft);
		FVector FalloffLeft0 = FVector(0.0f, Points[j - 1].StartEndFalloff, BlendValue);
		FVector FalloffLeft1 = FVector(0.0f, Points[j].StartEndFalloff, BlendValue);
		Rasterizer.DrawTriangle(FalloffLeft0, Left0, FalloffLeft1, FalloffLeft0Pos, Left0Pos, FalloffLeft1Pos, false);
		Rasterizer.DrawTriangle(Left0, FalloffLeft1, Left1, Left0Pos, FalloffLeft1Pos, Left1Pos, false);

		// Right Falloff
		FVector2D FalloffRight0Pos = FVector2D(Points[j - 1].FalloffRight);
		FVector2D FalloffRight1Pos = FVector2D(Points[j].FalloffRight);
		FVector FalloffRight0 = FVector(0.0f, Points[j - 1].StartEndFalloff, BlendValue);
		FVector FalloffRight1 = FVector(0.0f, Points[j].StartEndFalloff, BlendValue);
		Rasterizer.DrawTriangle(Right0, FalloffRight0, Right1, Right0Pos, FalloffRight0Pos, Right1Pos, false);
		Rasterizer.DrawTriangle(FalloffRight0, Right1, FalloffRight1, FalloffRight0Pos, Right1Pos, FalloffRight1Pos, false);
	}

	LandscapeEdit.SetAlphaData(LayerInfo, MinX, MinY, MaxX, MaxY, Data.GetData(), 0, ELandscapeLayerPaintingRestriction::None, !LayerInfo->bNoWeightBlend, false);
	LandscapeEdit.GetComponentsInRegion(MinX, MinY, MaxX, MaxY, &ModifiedComponents);
}

void RasterizeControlPointHeights(int32& MinX, int32& MinY, int32& MaxX, int32& MaxY, FLandscapeEditDataInterface& LandscapeEdit, FVector ControlPointLocation, const TArray<FLandscapeSplineInterpPoint>& Points, bool bRaiseTerrain, bool bLowerTerrain, TSet<ULandscapeComponent*>& ModifiedComponents)
{
	if (!(bRaiseTerrain || bLowerTerrain))
	{
		return;
	}

	if (MinX > MaxX || MinY > MaxY)
	{
		return;
	}

	TArray<uint16> Data;
	Data.AddZeroed((1 + MaxY - MinY) * (1 + MaxX - MinX));

	int32 ValidMinX = MinX;
	int32 ValidMinY = MinY;
	int32 ValidMaxX = MaxX;
	int32 ValidMaxY = MaxY;
	LandscapeEdit.GetHeightData(ValidMinX, ValidMinY, ValidMaxX, ValidMaxY, Data.GetData(), 0);

	if (ValidMinX > ValidMaxX || ValidMinY > ValidMaxY)
	{
		// The control point's bounds don't intersect any data, so skip it
		MinX = ValidMinX;
		MinY = ValidMinY;
		MaxX = ValidMaxX;
		MaxY = ValidMaxY;

		return;
	}

	FLandscapeEditDataInterface::ShrinkData(Data, MinX, MinY, MaxX, MaxY, ValidMinX, ValidMinY, ValidMaxX, ValidMaxY);

	MinX = ValidMinX;
	MinY = ValidMinY;
	MaxX = ValidMaxX;
	MaxY = ValidMaxY;

	FTriangleRasterizer<FLandscapeSplineHeightsRasterPolicy> Rasterizer(
		FLandscapeSplineHeightsRasterPolicy(Data, MinX, MinY, MaxX, MaxY, bRaiseTerrain, bLowerTerrain));

	const FVector2D CenterPos = FVector2D(ControlPointLocation);
	const FVector Center = FVector(1.0f, Points[0].StartEndFalloff, ControlPointLocation.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue);

	for (int32 i = Points.Num() - 1, j = 0; j < Points.Num(); i = j++)
	{
		// Solid center
		const FVector2D Right0Pos = FVector2D(Points[i].Right);
		const FVector2D Left1Pos = FVector2D(Points[j].Left);
		const FVector2D Right1Pos = FVector2D(Points[j].Right);
		const FVector Right0 = FVector(1.0f, Points[i].StartEndFalloff, Points[i].Right.Z);
		const FVector Left1 = FVector(1.0f, Points[j].StartEndFalloff, Points[j].Left.Z);
		const FVector Right1 = FVector(1.0f, Points[j].StartEndFalloff, Points[j].Right.Z);

		Rasterizer.DrawTriangle(Center, Right0, Left1, CenterPos, Right0Pos, Left1Pos, false);
		Rasterizer.DrawTriangle(Center, Left1, Right1, CenterPos, Left1Pos, Right1Pos, false);

		// Falloff
		FVector2D FalloffRight0Pos = FVector2D(Points[i].FalloffRight);
		FVector2D FalloffLeft1Pos = FVector2D(Points[j].FalloffLeft);
		FVector FalloffRight0 = FVector(0.0f, Points[i].StartEndFalloff, Points[i].FalloffRight.Z);
		FVector FalloffLeft1 = FVector(0.0f, Points[j].StartEndFalloff, Points[j].FalloffLeft.Z);
		Rasterizer.DrawTriangle(Right0, FalloffRight0, Left1, Right0Pos, FalloffRight0Pos, Left1Pos, false);
		Rasterizer.DrawTriangle(FalloffRight0, Left1, FalloffLeft1, FalloffRight0Pos, Left1Pos, FalloffLeft1Pos, false);
	}

	LandscapeEdit.SetHeightData(MinX, MinY, MaxX, MaxY, Data.GetData(), 0, true);
	LandscapeEdit.GetComponentsInRegion(MinX, MinY, MaxX, MaxY, &ModifiedComponents);
}

void ASCharacter::DropWeapon()
{
	if (Role < ROLE_Authority)
	{
		ServerDropWeapon();
		return;
	}

	if (CurrentWeapon)
	{
		FVector CamLoc;
		FRotator CamRot;

		if (Controller == nullptr)
		{
			return;
		}		
		
		/* Find a location to drop the item, slightly in front of the player.
			Perform ray trace to check for blocking objects or walls and to make sure we don't drop any item through the level mesh */
		Controller->GetPlayerViewPoint(CamLoc, CamRot);
		FVector SpawnLocation;
		FRotator SpawnRotation = CamRot;

		const FVector Direction = CamRot.Vector();
		const FVector TraceStart = GetActorLocation();
		const FVector TraceEnd = GetActorLocation() + (Direction * DropWeaponMaxDistance);

		/* Setup the trace params, we are only interested in finding a valid drop position */
		FCollisionQueryParams TraceParams;
		TraceParams.bTraceComplex = false;
		TraceParams.bReturnPhysicalMaterial = false;
		TraceParams.AddIgnoredActor(this);

		FHitResult Hit;
		GetWorld()->LineTraceSingleByChannel(Hit, TraceStart, TraceEnd, ECC_WorldDynamic, TraceParams);

		/* Find farthest valid spawn location */
		if (Hit.bBlockingHit)
		{
			/* Slightly move away from impacted object */
			SpawnLocation = Hit.ImpactPoint + (Hit.ImpactNormal * 20);
		}
		else
		{
			SpawnLocation = TraceEnd;
		}

		/* Spawn the "dropped" weapon */
		FActorSpawnParameters SpawnInfo;
		SpawnInfo.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;
		ASWeaponPickup* NewWeaponPickup = GetWorld()->SpawnActor<ASWeaponPickup>(CurrentWeapon->WeaponPickupClass, SpawnLocation, FRotator::ZeroRotator, SpawnInfo);

		if (NewWeaponPickup)
		{
			/* Apply torque to make it spin when dropped. */
			UStaticMeshComponent* MeshComp = NewWeaponPickup->GetMeshComponent();
			if (MeshComp)
			{
				MeshComp->SetSimulatePhysics(true);
				MeshComp->AddTorque(FVector(1, 1, 1) * 4000000);
			}
		}

		RemoveWeapon(CurrentWeapon, true);
	}
}

FPhATEdPreviewViewportClient::FPhATEdPreviewViewportClient(TWeakPtr<FPhAT> InPhAT, TSharedPtr<FPhATSharedData> Data, const TSharedRef<SPhATPreviewViewport>& InPhATPreviewViewport)
	: FEditorViewportClient(nullptr, &Data->PreviewScene, StaticCastSharedRef<SEditorViewport>(InPhATPreviewViewport))
	, PhATPtr(InPhAT)
	, SharedData(Data)
	, MinPrimSize(0.5f)
	, PhAT_TranslateSpeed(0.25f)
	, PhAT_RotateSpeed(1.0 * (PI / 180.0))
	, PhAT_LightRotSpeed(0.22f)
	, SimGrabCheckDistance(5000.0f)
	, SimHoldDistanceChangeDelta(20.0f)
	, SimMinHoldDistance(10.0f)
	, SimGrabMoveSpeed(1.0f)
{
	check(PhATPtr.IsValid());

	ModeTools->SetWidgetMode(FWidget::EWidgetMode::WM_Translate);
	ModeTools->SetCoordSystem(COORD_Local);

	bAllowedToMoveCamera = true;

	// Setup defaults for the common draw helper.
	DrawHelper.bDrawPivot = false;
	DrawHelper.bDrawWorldBox = false;
	DrawHelper.bDrawKillZ = false;
	DrawHelper.GridColorAxis = FColor(80,80,80);
	DrawHelper.GridColorMajor = FColor(72,72,72);
	DrawHelper.GridColorMinor = FColor(64,64,64);
	DrawHelper.PerspectiveGridSize = 32767;

	PhATFont = GEngine->GetSmallFont();
	check(PhATFont);

	EngineShowFlags.DisableAdvancedFeatures();
	EngineShowFlags.SetSeparateTranslucency(true);
	EngineShowFlags.SetCompositeEditorPrimitives(true);

	// Get actors asset collision bounding box, and move actor so its not intersection the floor plane at Z = 0.
	FBox CollBox = SharedData->PhysicsAsset->CalcAABB(SharedData->EditorSkelComp, SharedData->EditorSkelComp->ComponentToWorld);	
	FVector SkelCompLocation = FVector(0, 0, -CollBox.Min.Z + SharedData->EditorSimOptions->FloorGap);

	SharedData->EditorSkelComp->SetAbsolute(true, true, true);
	SharedData->EditorSkelComp->SetRelativeLocation(SkelCompLocation);
	SharedData->ResetTM = SharedData->EditorSkelComp->GetComponentToWorld();

	// Get new bounding box and set view based on that.
	CollBox = SharedData->PhysicsAsset->CalcAABB(SharedData->EditorSkelComp, SharedData->EditorSkelComp->ComponentToWorld);	
	FVector CollBoxExtent = CollBox.GetExtent();

	// Take into account internal mesh translation/rotation/scaling etc.
	FTransform LocalToWorld = SharedData->EditorSkelComp->ComponentToWorld;
	FSphere WorldSphere = SharedData->EditorSkelMesh->GetImportedBounds().GetSphere().TransformBy(LocalToWorld);

	CollBoxExtent = CollBox.GetExtent();
	if (CollBoxExtent.X > CollBoxExtent.Y)
	{
		SetViewLocation( FVector(WorldSphere.Center.X, WorldSphere.Center.Y - 1.5*WorldSphere.W, WorldSphere.Center.Z) );
		SetViewRotation( EditorViewportDefs::DefaultPerspectiveViewRotation );	
	}
	else
	{
		SetViewLocation( FVector(WorldSphere.Center.X - 1.5*WorldSphere.W, WorldSphere.Center.Y, WorldSphere.Center.Z) );
		SetViewRotation( FRotator::ZeroRotator );	
	}
	
	SetViewLocationForOrbiting(FVector::ZeroVector);

	SetViewModes(VMI_Lit, VMI_Lit);

	SetCameraSpeedSetting(3);

	bUsingOrbitCamera = true;

	if (!FPhAT::IsPIERunning())
	{
		SetRealtime(true);
	}
}

FVector ULeapImage::Warp(FVector xy) const
{
	Leap::Vector vect = Leap::Vector(xy.X, xy.Y, xy.Z);
	vect = _private->leapImage.warp(vect);
	return FVector(vect.x, vect.y, vect.z);
}

FVector ADraggableMoveTile::calculateCurrentDir()
{
	auto startNode = path[currNode];
	return FVector();
}