110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//=============================================================================//
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#ifndef GLOBALVARS_BASE_H
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#define GLOBALVARS_BASE_H
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#ifdef _WIN32
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#pragma once
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#endif
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class CSaveRestoreData;
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//-----------------------------------------------------------------------------
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// Purpose: Global variables used by shared code
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//-----------------------------------------------------------------------------
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class CGlobalVarsBase
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{
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public:
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CGlobalVarsBase( bool bIsClient );
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// This can be used to filter debug output or to catch the client or server in the act.
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bool IsClient() const;
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// for encoding m_flSimulationTime, m_flAnimTime
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int GetNetworkBase( int nTick, int nEntity );
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public:
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// Absolute time (per frame still - Use Plat_FloatTime() for a high precision real time
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// perf clock, but not that it doesn't obey host_timescale/host_framerate)
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float realtime;
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// Absolute frame counter
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int framecount;
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// Non-paused frametime
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float absoluteframetime;
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// Current time
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//
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// On the client, this (along with tickcount) takes a different meaning based on what
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// piece of code you're in:
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//
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// - While receiving network packets (like in PreDataUpdate/PostDataUpdate and proxies),
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// this is set to the SERVER TICKCOUNT for that packet. There is no interval between
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// the server ticks.
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// [server_current_Tick * tick_interval]
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//
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// - While rendering, this is the exact client clock
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// [client_current_tick * tick_interval + interpolation_amount]
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//
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// - During prediction, this is based on the client's current tick:
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// [client_current_tick * tick_interval]
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float curtime;
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// Time spent on last server or client frame (has nothing to do with think intervals)
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float frametime;
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// current maxplayers setting
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int maxClients;
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// Simulation ticks
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int tickcount;
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// Simulation tick interval
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float interval_per_tick;
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// interpolation amount ( client-only ) based on fraction of next tick which has elapsed
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float interpolation_amount;
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int simTicksThisFrame;
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int network_protocol;
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// current saverestore data
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CSaveRestoreData *pSaveData;
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private:
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// Set to true in client code.
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bool m_bClient;
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// 100 (i.e., tickcount is rounded down to this base and then the "delta" from this base is networked
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int nTimestampNetworkingBase;
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// 32 (entindex() % nTimestampRandomizeWindow ) is subtracted from gpGlobals->tickcount to set the networking basis, prevents
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// all of the entities from forcing a new PackedEntity on the same tick (i.e., prevents them from getting lockstepped on this)
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int nTimestampRandomizeWindow;
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};
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inline int CGlobalVarsBase::GetNetworkBase( int nTick, int nEntity )
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{
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int nEntityMod = nEntity % nTimestampRandomizeWindow;
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int nBaseTick = nTimestampNetworkingBase * (int)( ( nTick - nEntityMod ) / nTimestampNetworkingBase );
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return nBaseTick;
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}
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inline CGlobalVarsBase::CGlobalVarsBase( bool bIsClient ) :
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m_bClient( bIsClient ),
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nTimestampNetworkingBase( 100 ),
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nTimestampRandomizeWindow( 32 )
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{
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}
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inline bool CGlobalVarsBase::IsClient() const
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{
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return m_bClient;
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}
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#endif // GLOBALVARS_BASE_H
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