void PxSerialization::createSerialObjectIds(PxCollection& collection, const PxSerialObjectId base)
{
PxSerialObjectId localBase = base;
PxU32 nbObjects = collection.getNbObjects();
for (PxU32 i = 0; i < nbObjects; ++i)
{
while(collection.find(localBase))
{
localBase++;
}
PxBase& s = collection.getObject(i);
if(PX_SERIAL_OBJECT_ID_INVALID == collection.getId(s))
{
collection.addId(s, localBase);
localBase++;
}
}
}
bool PxSerialization::isSerializable(PxCollection& collection, PxSerializationRegistry& sr, const PxCollection* externalReferences)
{
PxCollection* subordinateCollection = PxCreateCollection();
PX_ASSERT(subordinateCollection);
for(PxU32 i = 0; i < collection.getNbObjects(); ++i)
{
PxBase& s = collection.getObject(i);
const PxSerializer* serializer = sr.getSerializer(s.getConcreteType());
PX_ASSERT(serializer);
if(serializer->isSubordinate())
subordinateCollection->add(s);
if(externalReferences)
{
PxSerialObjectId id = collection.getId(s);
if(id != PX_SERIAL_OBJECT_ID_INVALID)
{
PxBase* object = externalReferences->find(id);
if(object && (object != &s))
{
subordinateCollection->release();
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"PxSerialization::isSerializable: Reference id %llu used both in current collection and in externalReferences. "
"Please use unique identifiers.", id);
return false;
}
}
}
}
PxCollection* requiresCollection = PxCreateCollection();
PX_ASSERT(requiresCollection);
RequiresCallback requiresCallback0(*requiresCollection);
for (PxU32 i = 0; i < collection.getNbObjects(); ++i)
{
PxBase& s = collection.getObject(i);
const PxSerializer* serializer = sr.getSerializer(s.getConcreteType());
PX_ASSERT(serializer);
serializer->requires(s, requiresCallback0);
Cm::Collection* cmRequiresCollection = static_cast<Cm::Collection*>(requiresCollection);
for(PxU32 j = 0; j < cmRequiresCollection->getNbObjects(); ++j)
{
PxBase& s0 = cmRequiresCollection->getObject(j);
if(subordinateCollection->contains(s0))
{
subordinateCollection->remove(s0);
continue;
}
bool requiredIsInCollection = collection.contains(s0);
if(!requiredIsInCollection)
{
if(externalReferences)
{
if(!externalReferences->contains(s0))
{
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"PxSerialization::isSerializable: Object of type %s references a missing object of type %s. "
"The missing object needs to be added to either the current collection or the externalReferences collection.",
s.getConcreteTypeName(), s0.getConcreteTypeName());
}
else if(externalReferences->getId(s0) == PX_SERIAL_OBJECT_ID_INVALID)
{
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"PxSerialization::isSerializable: Object of type %s in externalReferences collection requires an id.",
s0.getConcreteTypeName());
}
else
continue;
}
else
{
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"PxSerialization::isSerializable: Object of type %s references a missing serial object of type %s. "
"Please completed the collection or specify an externalReferences collection containing the object.",
s.getConcreteTypeName(), s0.getConcreteTypeName());
}
subordinateCollection->release();
requiresCollection->release();
return false;
}
}
cmRequiresCollection->mObjects.clear();
}
requiresCollection->release();
PxU32 numOrphans = subordinateCollection->getNbObjects();
for(PxU32 j = 0; j < numOrphans; ++j)
{
PxBase& subordinate = subordinateCollection->getObject(j);
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"PxSerialization::isSerializable: An object of type %s is subordinate but not required "
"by other objects in the collection (orphan). Please remove the object from the collection or add its owner.",
subordinate.getConcreteTypeName());
}
subordinateCollection->release();
if(numOrphans>0)
return false;
if(externalReferences)
{
PxCollection* oppositeRequiresCollection = PxCreateCollection();
PX_ASSERT(oppositeRequiresCollection);
RequiresCallback requiresCallback(*oppositeRequiresCollection);
for (PxU32 i = 0; i < externalReferences->getNbObjects(); ++i)
{
PxBase& s = externalReferences->getObject(i);
const PxSerializer* serializer = sr.getSerializer(s.getConcreteType());
PX_ASSERT(serializer);
serializer->requires(s, requiresCallback);
Cm::Collection* cmCollection = static_cast<Cm::Collection*>(oppositeRequiresCollection);
for(PxU32 j = 0; j < cmCollection->getNbObjects(); ++j)
{
PxBase& s0 = cmCollection->getObject(j);
if(collection.contains(s0))
{
oppositeRequiresCollection->release();
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"PxSerialization::isSerializable: Object of type %s in externalReferences references an object "
"of type %s in collection (circular dependency).",
s.getConcreteTypeName(), s0.getConcreteTypeName());
return false;
}
}
cmCollection->mObjects.clear();
}
oppositeRequiresCollection->release();
}
return true;
}
bool PxSerialization::isSerializable(PxCollection& collection, PxSerializationRegistry& sr, const PxCollection* externalReferences)
{
bool bRet = true;
PxCollection* subordinateCollection = PxCreateCollection();
PX_ASSERT(subordinateCollection);
for(PxU32 i = 0; i < collection.getNbObjects(); ++i)
{
PxBase& s = collection.getObject(i);
const PxSerializer* serializer = sr.getSerializer(s.getConcreteType());
PX_ASSERT(serializer);
if(serializer->isSubordinate())
subordinateCollection->add(s);
if(externalReferences)
{
PxSerialObjectId id = collection.getId(s);
if(id != PX_SERIAL_OBJECT_ID_INVALID)
{
PxBase* object = externalReferences->find(id);
if(object && (object != &s))
{
subordinateCollection->release();
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"NpCollection::isSerializable: object shares reference name with other object in externalReferences (reference clash).");
return false;
}
}
}
}
PxCollection* requiresCollection = PxCreateCollection();
PX_ASSERT(requiresCollection);
RequiresCallback requiresCallback0(*requiresCollection);
for (PxU32 i = 0; i < collection.getNbObjects(); ++i)
{
PxBase& s = collection.getObject(i);
const PxSerializer* serializer = sr.getSerializer(s.getConcreteType());
PX_ASSERT(serializer);
serializer->requires(s, requiresCallback0);
}
for(PxU32 j = 0; j < subordinateCollection->getNbObjects(); ++j)
{
PxBase& subordinate = subordinateCollection->getObject(j);
bRet = requiresCollection->contains(subordinate);
if(!bRet)
{
requiresCollection->release();
subordinateCollection->release();
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"NpCollection::isSerializable: object is a subordinate and not required by other objects in the collection (orphan).");
return false;
}
}
subordinateCollection->release();
for(PxU32 j = 0; j < requiresCollection->getNbObjects(); ++j)
{
PxBase& s0 = requiresCollection->getObject(j);
bRet = collection.contains(s0);
if(!bRet && externalReferences)
{
bRet = externalReferences->contains(s0) && externalReferences->getId(s0) != PX_SERIAL_OBJECT_ID_INVALID;
}
if(!bRet)
{
requiresCollection->release();
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"NpCollection::isSerializable: cannot find a required serial object (collection is not complete).");
return false;
}
}
requiresCollection->release();
if(externalReferences)
{
PxCollection* oppsiteRequiresCollection = PxCreateCollection();
PX_ASSERT(oppsiteRequiresCollection);
RequiresCallback requiresCallback(*oppsiteRequiresCollection);
for (PxU32 i = 0; i < externalReferences->getNbObjects(); ++i)
{
PxBase& s = externalReferences->getObject(i);
const PxSerializer* serializer = sr.getSerializer(s.getConcreteType());
PX_ASSERT(serializer);
serializer->requires(s, requiresCallback);
}
for(PxU32 j = 0; j < oppsiteRequiresCollection->getNbObjects(); ++j)
{
PxBase& s0 = oppsiteRequiresCollection->getObject(j);
if(collection.contains(s0))
{
oppsiteRequiresCollection->release();
Ps::getFoundation().error(physx::PxErrorCode::eINVALID_PARAMETER, __FILE__, __LINE__,
"NpCollection::isSerializable: object in externalReferences requires an object in collection (circular dependency).");
return false;
}
}
oppsiteRequiresCollection->release();
}
return true;
}
virtual bool SerializeActors(FName Format, const TArray<FBodyInstance*>& Bodies, const TArray<UBodySetup*>& BodySetups, const TArray<UPhysicalMaterial*>& PhysicalMaterials, TArray<uint8>& OutBuffer) const override
{
#if WITH_PHYSX
PxSerializationRegistry* PRegistry = PxSerialization::createSerializationRegistry(*GPhysXSDK);
PxCollection* PCollection = PxCreateCollection();
PxBase* PLastObject = nullptr;
for(FBodyInstance* BodyInstance : Bodies)
{
if(BodyInstance->RigidActorSync)
{
PCollection->add(*BodyInstance->RigidActorSync, BodyInstance->RigidActorSyncId);
PLastObject = BodyInstance->RigidActorSync;
}
if(BodyInstance->RigidActorAsync)
{
PCollection->add(*BodyInstance->RigidActorAsync, BodyInstance->RigidActorAsyncId);
PLastObject = BodyInstance->RigidActorAsync;
}
}
PxSerialization::createSerialObjectIds(*PCollection, PxSerialObjectId(1)); //we get physx to assign an id for each actor
//Note that rigid bodies may have assigned ids. It's important to let them go first because we rely on that id for deserialization.
//One this is done we must find out the next available ID, and use that for naming the shared resources. We have to save this for deserialization
uint64 BaseId = PLastObject ? (PCollection->getId(*PLastObject) + 1) : 1;
PxCollection* PExceptFor = MakePhysXCollection(PhysicalMaterials, BodySetups, BaseId);
for (FBodyInstance* BodyInstance : Bodies) //and then we mark that id back into the bodyinstance so we can pair the two later
{
if (BodyInstance->RigidActorSync)
{
BodyInstance->RigidActorSyncId = PCollection->getId(*BodyInstance->RigidActorSync);
}
if (BodyInstance->RigidActorAsync)
{
BodyInstance->RigidActorAsyncId = PCollection->getId(*BodyInstance->RigidActorAsync);
}
}
//We must store the BaseId for shared resources.
FMemoryWriter Ar(OutBuffer);
uint8 bIsLittleEndian = PLATFORM_LITTLE_ENDIAN; //TODO: We should pass the target platform into this function and write it. Then swap the endian on the writer so the reader doesn't have to do it at runtime
Ar << bIsLittleEndian;
Ar << BaseId;
//Note that PhysX expects the binary data to be 128-byte aligned. Because of this we must pad
int32 BytesToPad = PHYSX_SERIALIZATION_ALIGNMENT - (Ar.Tell() % PHYSX_SERIALIZATION_ALIGNMENT);
OutBuffer.AddZeroed(BytesToPad);
FPhysXOutputStream Buffer(&OutBuffer);
PxSerialization::complete(*PCollection, *PRegistry, PExceptFor);
PxSerialization::serializeCollectionToBinary(Buffer, *PCollection, *PRegistry, PExceptFor);
#if PHYSX_MEMORY_VALIDATION
GPhysXAllocator->ValidateHeaders();
#endif
PCollection->release();
PExceptFor->release();
PRegistry->release();
#if PHYSX_MEMORY_VALIDATION
GPhysXAllocator->ValidateHeaders();
#endif
return true;
#endif
return false;
}