source-engine/engine/packed_entity.cpp

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: 
//
// $NoKeywords: $
//
//=============================================================================//
#include <malloc.h>
#include <string.h>
#include <assert.h>
#include "packed_entity.h"
#include "basetypes.h"
#include "changeframelist.h"
#include "dt_send.h"
#include "dt_send_eng.h"
#include "server_class.h"

// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"


// -------------------------------------------------------------------------------------------------- //
// PackedEntity.
// -------------------------------------------------------------------------------------------------- //

PackedEntity::PackedEntity()
{
	m_pData = NULL;
	m_pChangeFrameList = NULL;
	m_nSnapshotCreationTick = 0;
	m_nShouldCheckCreationTick = 0;
}

PackedEntity::~PackedEntity()
{
	FreeData();

	if ( m_pChangeFrameList )
	{
		m_pChangeFrameList->Release();
		m_pChangeFrameList = NULL;
	}
}


bool PackedEntity::AllocAndCopyPadded( const void *pData, unsigned long size )
{
	FreeData();
	
	unsigned long nBytes = PAD_NUMBER( size, 4 );

	// allocate the memory
	m_pData = malloc( nBytes );

	if ( !m_pData )
	{
		Assert( m_pData );
		return false;
	}
	
	Q_memcpy( m_pData, pData, size );
	SetNumBits( nBytes * 8 );
	
	return true;
}


int PackedEntity::GetPropsChangedAfterTick( int iTick, int *iOutProps, int nMaxOutProps )
{
	if ( m_pChangeFrameList )
	{
		return m_pChangeFrameList->GetPropsChangedAfterTick( iTick, iOutProps, nMaxOutProps );
	}
	else
	{
		// signal that we don't have a changelist
		return -1;
	}
}


const CSendProxyRecipients*	PackedEntity::GetRecipients() const
{
	return m_Recipients.Base();
}


int PackedEntity::GetNumRecipients() const
{
	return m_Recipients.Count();
}


void PackedEntity::SetRecipients( const CUtlMemory<CSendProxyRecipients> &recipients )
{
	m_Recipients.CopyArray( recipients.Base(), recipients.Count() );
}


bool PackedEntity::CompareRecipients( const CUtlMemory<CSendProxyRecipients> &recipients )
{
	if ( recipients.Count() != m_Recipients.Count() )
		return false;
	
	return memcmp( recipients.Base(), m_Recipients.Base(), sizeof( CSendProxyRecipients ) * m_Recipients.Count() ) == 0;
}	

void PackedEntity::SetServerAndClientClass( ServerClass *pServerClass, ClientClass *pClientClass )
{
	m_pServerClass = pServerClass;
	m_pClientClass = pClientClass;
	if ( pServerClass )
	{
		Assert( pServerClass->m_pTable );
		SetShouldCheckCreationTick( pServerClass->m_pTable->HasPropsEncodedAgainstTickCount() );
	}
}