IPredictionSystem
This interface allows you to prevent sending network data to the local player because it's already predicting the data.
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============// // // Purpose: // // $NoKeywords: $ //=============================================================================//
#ifndef IPREDICTIONSYSTEM_H #define IPREDICTIONSYSTEM_H #ifdef _WIN32 #pragma once #endif
#include "predictable_entity.h"
class CBaseEntity;
//----------------------------------------------------------------------------- // Purpose: Interfaces derived from this are able to filter out the local player // when doing prediction on the client, this includes not sending network data to // the local player from the server if needed. //----------------------------------------------------------------------------- class IPredictionSystem { public: IPredictionSystem() { m_pNextSystem = g_pPredictionSystems; g_pPredictionSystems = this;
m_bSuppressEvent = false; m_pSuppressHost = NULL;
m_nStatusPushed = 0; };
virtual ~IPredictionSystem() {};
IPredictionSystem *GetNext() { return m_pNextSystem; }
void SetSuppressEvent( bool state ) { m_bSuppressEvent = state; }
void SetSuppressHost( CBaseEntity *host ) { m_pSuppressHost = host; }
CBaseEntity const *GetSuppressHost( void ) { if ( DisableFiltering() ) { return NULL; }
return m_pSuppressHost; }
bool CanPredict( void ) const { if ( DisableFiltering() ) { return false; }
return !m_bSuppressEvent; }
static IPredictionSystem *g_pPredictionSystems;
static void SuppressEvents( bool state ) { IPredictionSystem *sys = g_pPredictionSystems; while ( sys ) { sys->SetSuppressEvent( state ); sys = sys->GetNext(); } }
static void SuppressHostEvents( CBaseEntity *host ) { IPredictionSystem *sys = g_pPredictionSystems; while ( sys ) { sys->SetSuppressHost( host ); sys = sys->GetNext(); } }
private:
static void Push( void ) { IPredictionSystem *sys = g_pPredictionSystems; while ( sys ) { sys->_Push(); sys = sys->GetNext(); } }
static void Pop( void ) { IPredictionSystem *sys = g_pPredictionSystems; while ( sys ) { sys->_Pop(); sys = sys->GetNext(); } }
void _Push( void ) { ++m_nStatusPushed; } void _Pop( void ) { --m_nStatusPushed; }
bool DisableFiltering( void ) const { return ( m_nStatusPushed > 0 ) ? true : false; }
IPredictionSystem *m_pNextSystem; bool m_bSuppressEvent; CBaseEntity *m_pSuppressHost;
int m_nStatusPushed;
friend class CDisablePredictionFiltering; };
class CDisablePredictionFiltering { public: CDisablePredictionFiltering( bool disable = true ) { m_bDisabled = disable; if ( m_bDisabled ) { IPredictionSystem::Push(); } }
~CDisablePredictionFiltering( void ) { if ( m_bDisabled ) { IPredictionSystem::Pop(); } } private: bool m_bDisabled; };
#endif // IPREDICTIONSYSTEM_H