#ifndef BASEHANDLE_H
#define BASEHANDLE_H
#ifdef _WIN32
#pragma once
#endif


#include "const.h"
#include "dbg.h"


class IHandleEntity;


class CBaseHandle
{
	friend class CBaseEntityList;

public:

	CBaseHandle();
	CBaseHandle(const CBaseHandle& other);
	CBaseHandle(unsigned long value);
	CBaseHandle(int iEntry, int iSerialNumber);

	void Init(int iEntry, int iSerialNumber);
	void Term();

	bool IsValid() const;

	int GetEntryIndex() const;
	int GetSerialNumber() const;

	int ToInt() const;
	bool operator !=(const CBaseHandle& other) const;
	bool operator ==(const CBaseHandle& other) const;
	bool operator ==(const IHandleEntity* pEnt) const;
	bool operator !=(const IHandleEntity* pEnt) const;
	bool operator <(const CBaseHandle& other) const;
	bool operator <(const IHandleEntity* pEnt) const;

	const CBaseHandle& operator=(const IHandleEntity* pEntity);
	const CBaseHandle& Set(const IHandleEntity* pEntity);

	IHandleEntity* Get() const;


protected:
	unsigned long	m_Index;
};


#include "ihandleentity.h"


inline CBaseHandle::CBaseHandle()
{
	m_Index = INVALID_EHANDLE_INDEX;
}

inline CBaseHandle::CBaseHandle(const CBaseHandle& other)
{
	m_Index = other.m_Index;
}

inline CBaseHandle::CBaseHandle(unsigned long value)
{
	m_Index = value;
}

inline CBaseHandle::CBaseHandle(int iEntry, int iSerialNumber)
{
	Init(iEntry, iSerialNumber);
}

inline void CBaseHandle::Init(int iEntry, int iSerialNumber)
{
	Assert(iEntry >= 0 && iEntry < NUM_ENT_ENTRIES);
	Assert(iSerialNumber >= 0 && iSerialNumber < (1 << NUM_SERIAL_NUM_BITS));

	m_Index = iEntry | (iSerialNumber << NUM_ENT_ENTRY_BITS);
}

inline void CBaseHandle::Term()
{
	m_Index = INVALID_EHANDLE_INDEX;
}

inline bool CBaseHandle::IsValid() const
{
	return m_Index != INVALID_EHANDLE_INDEX;
}

inline int CBaseHandle::GetEntryIndex() const
{
	return m_Index & ENT_ENTRY_MASK;
}

inline int CBaseHandle::GetSerialNumber() const
{
	return m_Index >> NUM_ENT_ENTRY_BITS;
}

inline int CBaseHandle::ToInt() const
{
	return (int)m_Index;
}

inline bool CBaseHandle::operator !=(const CBaseHandle& other) const
{
	return m_Index != other.m_Index;
}

inline bool CBaseHandle::operator ==(const CBaseHandle& other) const
{
	return m_Index == other.m_Index;
}

inline bool CBaseHandle::operator ==(const IHandleEntity* pEnt) const
{
	return Get() == pEnt;
}

inline bool CBaseHandle::operator !=(const IHandleEntity* pEnt) const
{
	return Get() != pEnt;
}

inline bool CBaseHandle::operator <(const CBaseHandle& other) const
{
	return m_Index < other.m_Index;
}

inline bool CBaseHandle::operator <(const IHandleEntity* pEntity) const
{
	unsigned long otherIndex = (pEntity) ? pEntity->GetRefEHandle().m_Index : INVALID_EHANDLE_INDEX;
	return m_Index < otherIndex;
}

inline const CBaseHandle& CBaseHandle::operator=(const IHandleEntity* pEntity)
{
	return Set(pEntity);
}

inline const CBaseHandle& CBaseHandle::Set(const IHandleEntity* pEntity)
{
	if (pEntity)
	{
		*this = pEntity->GetRefEHandle();
	}
	else
	{
		m_Index = INVALID_EHANDLE_INDEX;
	}

	return *this;
}


#endif