Something

template <class T>
class CEntityFactory : public IEntityFactory
{
public:
	CEntityFactory( const char *pClassName )
	{
		EntityFactoryDictionary()->InstallFactory( this, pClassName );
	}

	IServerNetworkable *Create( const char *pClassName )
	{
		T* pEnt = _CreateEntityTemplate((T*)NULL, pClassName);
		return pEnt->NetworkProp();
	}

	void Destroy( IServerNetworkable *pNetworkable )
	{
		if ( pNetworkable )
		{
			pNetworkable->Release();
		}
	}

	virtual size_t GetEntitySize()
	{
		return sizeof(T);
	}
};

#define LINK_ENTITY_TO_CLASS(mapClassName,DLLClassName) \
	static CEntityFactory<DLLClassName> mapClassName( #mapClassName );