Esempi in C++ (Cpp) per FPhysScene::SetUpForFrame

Esempio n. 1

File: PhysLevel.cpp Progetto: kidaa/UnrealEngineVR

void UWorld::SetupPhysicsTickFunctions(float DeltaSeconds)
{
	StartPhysicsTickFunction.bCanEverTick = true;
	StartPhysicsTickFunction.Target = this;
	
	EndPhysicsTickFunction.bCanEverTick = true;
	EndPhysicsTickFunction.Target = this;
	
	StartClothTickFunction.bCanEverTick = true;
	StartClothTickFunction.Target = this;
	
	EndClothTickFunction.bCanEverTick = true;
	EndClothTickFunction.Target = this;
	
	
	// see if we need to update tick registration
	bool bNeedToUpdateTickRegistration = (bShouldSimulatePhysics != StartPhysicsTickFunction.IsTickFunctionRegistered())
		|| (bShouldSimulatePhysics != EndPhysicsTickFunction.IsTickFunctionRegistered())
		|| (bShouldSimulatePhysics != StartClothTickFunction.IsTickFunctionRegistered())
		|| (bShouldSimulatePhysics != EndClothTickFunction.IsTickFunctionRegistered());

	if (bNeedToUpdateTickRegistration && PersistentLevel)
	{
		if (bShouldSimulatePhysics && !StartPhysicsTickFunction.IsTickFunctionRegistered())
		{
			StartPhysicsTickFunction.TickGroup = TG_StartPhysics;
			StartPhysicsTickFunction.RegisterTickFunction(PersistentLevel);
		}
		else if (!bShouldSimulatePhysics && StartPhysicsTickFunction.IsTickFunctionRegistered())
		{
			StartPhysicsTickFunction.UnRegisterTickFunction();
		}

		if (bShouldSimulatePhysics && !EndPhysicsTickFunction.IsTickFunctionRegistered())
		{
			EndPhysicsTickFunction.TickGroup = TG_EndPhysics;
			EndPhysicsTickFunction.RegisterTickFunction(PersistentLevel);
			EndPhysicsTickFunction.AddPrerequisite(this, StartPhysicsTickFunction);
		}
		else if (!bShouldSimulatePhysics && EndPhysicsTickFunction.IsTickFunctionRegistered())
		{
			EndPhysicsTickFunction.RemovePrerequisite(this, StartPhysicsTickFunction);
			EndPhysicsTickFunction.UnRegisterTickFunction();
		}

		//cloth
		if (bShouldSimulatePhysics && !StartClothTickFunction.IsTickFunctionRegistered())
		{
			StartClothTickFunction.TickGroup = TG_StartCloth;
			StartClothTickFunction.RegisterTickFunction(PersistentLevel);
		}
		else if (!bShouldSimulatePhysics && StartClothTickFunction.IsTickFunctionRegistered())
		{
			StartClothTickFunction.UnRegisterTickFunction();
		}

		if (bShouldSimulatePhysics && !EndClothTickFunction.IsTickFunctionRegistered())
		{
			EndClothTickFunction.TickGroup = TG_EndCloth;
			EndClothTickFunction.RegisterTickFunction(PersistentLevel);
			EndClothTickFunction.AddPrerequisite(this, StartClothTickFunction);
		}
		else if (!bShouldSimulatePhysics && EndClothTickFunction.IsTickFunctionRegistered())
		{
			EndClothTickFunction.RemovePrerequisite(this, StartClothTickFunction);
			EndClothTickFunction.UnRegisterTickFunction();
		}
	}

	FPhysScene* PhysScene = GetPhysicsScene();
	if (PhysicsScene == NULL)
	{
		return;
	}

#if WITH_PHYSX
	
	// When ticking the main scene, clean up any physics engine resources (once a frame)
	DeferredPhysResourceCleanup();
#endif

	// Update gravity in case it changed
	FVector DefaultGravity( 0.f, 0.f, GetGravityZ() );

	static const auto CVar_MaxPhysicsDeltaTime = IConsoleManager::Get().FindTConsoleVariableDataFloat(TEXT("p.MaxPhysicsDeltaTime"));
	PhysScene->SetUpForFrame(&DefaultGravity, DeltaSeconds, UPhysicsSettings::Get()->MaxPhysicsDeltaTime);
}