Method ReadObjects

source/common/engine/serializer.cpp:669–762

//==========================================================================

void FSerializer::ReadObjects(bool hubtravel)
{
	bool founderrors = false;

	if (isReading() && BeginArray("objects"))
	{
		// Do not link any thinker that's being created here. This will be done by deserializing the thinker list later.
		try
		{
			r->mDObjects.Resize(ArraySize());
			for (auto &p : r->mDObjects)
			{
				p = nullptr;
			}

			// First iteration: create all the objects but do nothing with them yet.
			for (unsigned i = 0; i < r->mDObjects.Size(); i++)
			{
				if (BeginObject(nullptr))
				{
					FString clsname;	// do not deserialize the class type directly so that we can print appropriate errors.

					Serialize(*this, "classtype", clsname, nullptr);
					PClass *cls = PClass::FindClass(clsname);
					if (cls == nullptr)
					{
						Printf(TEXTCOLOR_RED "Unknown object class '%s' in savegame\n", clsname.GetChars());
						founderrors = true;
						r->mDObjects[i] = RUNTIME_CLASS(DObject)->CreateNew();	// make sure we got at least a valid pointer for the duration of the loading process.
						r->mDObjects[i]->Destroy();								// but we do not want to keep this around, so destroy it right away.
					}
					else
					{
						r->mDObjects[i] = cls->CreateNew();
					}
					EndObject();
				}
			}
			// Now that everything has been created and we can retrieve the pointers we can deserialize it.
			r->mObjectsRead = true;

			if (!founderrors)
			{
				// Reset to start;
				unsigned size = r->mObjects.Size();
				r->mObjects.Last().mIndex = 0;

				for (unsigned i = 0; i < r->mDObjects.Size(); i++)
				{
					auto obj = r->mDObjects[i];
					if (BeginObject(nullptr))
					{
						if (obj != nullptr)
						{
							try
							{
								obj->SerializeUserVars(*this);
								obj->Serialize(*this);