//===========================================================================//
// File:	entity2.hh                                                          //
// Project: MUNGA           Brick: Entity Manager                            //
// Contents: Interface specification for entity class                        //
//---------------------------------------------------------------------------//
//   Date    Who  Modification                                               //
// --------  ---  ---------------------------------------------------------- //
// 11/29/94  JMA  Initial coding.                                            //
//---------------------------------------------------------------------------//
// Copyright (C) 1994, Virtual World Entertainment, Inc.                     //
// All Rights reserved worldwide                                             //
// This unpublished sourcecode is PROPRIETARY and CONFIDENTIAL               //
//===========================================================================//

#if !defined(ENTITYID_HPP)
	#define ENTITYID_HPP

	#if !defined(NETWORK_HPP)
		#include <network.hpp>
	#endif

	//##########################################################################
	//##########################    EntityID    ################################
	//##########################################################################

	class EntityID
	{
	public:
		#if defined(USE_SIGNATURE)
			friend int
				Is_Signature_Bad(const volatile EntityID *);
		#endif

		typedef Enumeration LocalID;

		EntityID();
		EntityID(const EntityID&);
		EntityID(HostID);
		EntityID(HostID, LocalID);

		Logical
			TestInstance() const;
		HostID
			GetHostID()
				{return hostID;}

		Logical
			operator!() const
				{Check(this); return operator==(Null);}
		EntityID&
			operator=(const EntityID&);

		EntityID
			operator-(const EntityID&) const;

		EntityID&
			operator+=(const EntityID&);
		EntityID&
			operator-=(const EntityID&);

		EntityID&
			operator+=(LocalID);
		EntityID&
			operator-=(LocalID);

		Logical
			operator<(const EntityID&) const;
		Logical
			operator<=(const EntityID&) const;
		Logical
			operator>(const EntityID&) const;
		Logical
			operator>=(const EntityID&) const;
		Logical
			operator==(const EntityID&) const;
		Logical
			operator!=(const EntityID&) const;

		operator int() const;

		static EntityID
			Null;
		static LocalID
			LocalNull;

		friend ostream&
			operator<<(
				ostream& stream,
				const EntityID& v
			)
				{return stream << v.hostID << ':' << v.localID;}

	private:
		HostID
			hostID;
		LocalID
			localID;
	};

#endif