307 lines
12 KiB
C
307 lines
12 KiB
C
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: VCR mode records a client's game and allows you to
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// play it back and reproduce it exactly. When playing it back, nothing
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// is simulated on the server, but all server packets are recorded.
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//
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// Most of the VCR mode functionality is accomplished through hooks
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// called at various points in the engine.
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//
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// $NoKeywords: $
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//===========================================================================//
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#ifndef VCRMODE_H
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#define VCRMODE_H
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#ifdef _WIN32
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#include <process.h>
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#endif
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#ifdef _WIN32
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#pragma once
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#endif
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#include "tier0/platform.h"
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#include "tier0/vcr_shared.h"
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#include "tier0/dbg.h"
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#ifdef POSIX
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DBG_INTERFACE const char *BuildCmdLine( int argc, char **argv, bool fAddSteam = true );
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tchar *GetCommandLine();
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#endif
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#ifdef _X360
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#define NO_VCR 1
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#endif
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// Enclose lines of code in this if you don't want anything in them written to or read from the VCR file.
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#ifndef NO_VCR
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#define NOVCR(x) \
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{\
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VCRSetEnabled(0);\
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x;\
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VCRSetEnabled(1);\
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}
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#else
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#define NOVCR(x) \
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{\
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x;\
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}
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#endif
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//-----------------------------------------------------------------------------
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// Forward declarations
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//-----------------------------------------------------------------------------
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struct InputEvent_t;
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//-----------------------------------------------------------------------------
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// Definitions.
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//-----------------------------------------------------------------------------
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enum VCRMode_t
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{
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VCR_Invalid=-1,
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VCR_Disabled=0,
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VCR_Record,
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VCR_Playback
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};
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//-----------------------------------------------------------------------------
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// Functions.
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//-----------------------------------------------------------------------------
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abstract_class IVCRHelpers
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{
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public:
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virtual void ErrorMessage( const tchar *pMsg ) = 0;
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virtual void* GetMainWindow() = 0;
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};
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// Used by the vcrtrace program.
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abstract_class IVCRTrace
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{
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public:
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virtual VCREvent ReadEvent() = 0;
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virtual void Read( void *pDest, int size ) = 0;
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};
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typedef struct VCR_s
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{
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// Start VCR record or play.
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int (*Start)( tchar const *pFilename, bool bRecord, IVCRHelpers *pHelpers );
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void (*End)();
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// Used by the VCR trace app.
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IVCRTrace* (*GetVCRTraceInterface)();
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// Get the current mode the VCR is in.
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VCRMode_t (*GetMode)();
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// This can be used to block out areas of code that are unpredictable (like things triggered by WM_TIMER messages).
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// Note: this enables/disables VCR mode usage on a PER-THREAD basis. The assumption is that you're marking out
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// specific sections of code that you don't want to use VCR mode inside of, but you're not intending to
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// stop all the other threads from using VCR mode.
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void (*SetEnabled)(int bEnabled);
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// This can be called any time to put in a debug check to make sure things are synchronized.
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void (*SyncToken)(tchar const *pToken);
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// Hook for Sys_FloatTime().
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double (*Hook_Sys_FloatTime)(double time);
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// Note: this makes no guarantees about msg.hwnd being the same on playback. If it needs to be, then we need to add
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// an ID system for Windows and store the ID like in Goldsrc.
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int (*Hook_PeekMessage)(
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struct tagMSG *msg,
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void *hWnd,
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unsigned int wMsgFilterMin,
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unsigned int wMsgFilterMax,
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unsigned int wRemoveMsg
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);
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// Call this to record game messages.
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void (*Hook_RecordGameMsg)( const InputEvent_t &event );
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void (*Hook_RecordEndGameMsg)();
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// Call this to playback game messages until it returns false.
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bool (*Hook_PlaybackGameMsg)( InputEvent_t *pEvent );
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// Hook for recvfrom() calls. This replaces the recvfrom() call.
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int (*Hook_recvfrom)(int s, char *buf, int len, int flags, struct sockaddr *from, int *fromlen);
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void (*Hook_GetCursorPos)(struct tagPOINT *pt);
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void (*Hook_ScreenToClient)(void *hWnd, struct tagPOINT *pt);
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void (*Hook_Cmd_Exec)(tchar **f);
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tchar* (*Hook_GetCommandLine)();
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// Registry hooks.
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long (*Hook_RegOpenKeyEx)( void *hKey, const tchar *lpSubKey, unsigned long ulOptions, unsigned long samDesired, void *pHKey );
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long (*Hook_RegSetValueEx)(void *hKey, tchar const *lpValueName, unsigned long Reserved, unsigned long dwType, uint8 const *lpData, unsigned long cbData);
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long (*Hook_RegQueryValueEx)(void *hKey, tchar const *lpValueName, unsigned long *lpReserved, unsigned long *lpType, uint8 *lpData, unsigned long *lpcbData);
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long (*Hook_RegCreateKeyEx)(void *hKey, tchar const *lpSubKey, unsigned long Reserved, tchar *lpClass, unsigned long dwOptions, unsigned long samDesired, void *lpSecurityAttributes, void *phkResult, unsigned long *lpdwDisposition);
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void (*Hook_RegCloseKey)(void *hKey);
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// hInput is a HANDLE.
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int (*Hook_GetNumberOfConsoleInputEvents)( void *hInput, unsigned long *pNumEvents );
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// hInput is a HANDLE.
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// pRecs is an INPUT_RECORD pointer.
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int (*Hook_ReadConsoleInput)( void *hInput, void *pRecs, int nMaxRecs, unsigned long *pNumRead );
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// This calls time() then gives you localtime()'s result.
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void (*Hook_LocalTime)( struct tm *today );
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short (*Hook_GetKeyState)( int nVirtKey );
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// TCP calls.
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int (*Hook_recv)( int s, char *buf, int len, int flags );
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int (*Hook_send)( int s, const char *buf, int len, int flags );
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// These can be used to add events without having to modify VCR mode.
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// pEventName is used for verification to make sure it's playing back correctly.
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// If pEventName is null, then verification is not performed.
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void (*GenericRecord)( const tchar *pEventName, const void *pData, int len );
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// Returns the number of bytes written in the generic event.
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// If bForceLenSame is true, then it will error out unless the value in the VCR file is the same as maxLen.
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int (*GenericPlayback)( const tchar *pEventName, void *pOutData, int maxLen, bool bForceLenSame );
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// If you just want to record and playback a value and not worry about whether or not you're
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// recording or playing back, use this. It also will do nothing if you're not recording or playing back.
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//
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// NOTE: also see GenericValueVerify, which allows you to have it VERIFY that pData's contents are the same upon playback
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// (rather than just copying whatever is in the VCR file into pData).
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void (*GenericValue)( const tchar *pEventName, void *pData, int maxLen );
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// Get the current percent (0.0 - 1.0) that it's played back through the file (only valid in playback).
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double (*GetPercentCompleted)();
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// If you use this, then any VCR stuff the thread does will work with VCR mode.
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// This mirrors the Windows API CreateThread function and returns a HANDLE the same way.
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void* (*Hook_CreateThread)(
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void *lpThreadAttributes,
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unsigned long dwStackSize,
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void *lpStartAddress,
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void *lpParameter,
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unsigned long dwCreationFlags,
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unsigned long *lpThreadID );
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unsigned long (*Hook_WaitForSingleObject)(
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void *handle,
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unsigned long dwMilliseconds );
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void (*Hook_EnterCriticalSection)( void *pCS );
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void (*Hook_Time)( long *pTime );
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// String value. Playback just verifies that the incoming string is the same as it was when recording.
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void (*GenericString)( const char *pEventName, const char *pString );
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// Works like GenericValue, except upon playback it will verify that pData's contents are the same as it was during recording.
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void (*GenericValueVerify)( const tchar *pEventName, const void *pData, int maxLen );
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unsigned long (*Hook_WaitForMultipleObjects)( uint32 nHandles, const void **pHandles, int bWaitAll, uint32 timeout );
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} VCR_t;
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#ifndef NO_VCR
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// In the launcher, this is created by vcrmode.c.
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// In the engine, this is set when the launcher initializes its DLL.
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PLATFORM_INTERFACE VCR_t *g_pVCR;
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#endif
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#ifndef NO_VCR
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#define VCRStart g_pVCR->Start
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#define VCREnd g_pVCR->End
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#define VCRGetVCRTraceInterface g_pVCR->GetVCRTraceInterface
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#define VCRGetMode g_pVCR->GetMode
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#define VCRSetEnabled g_pVCR->SetEnabled
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#define VCRSyncToken g_pVCR->SyncToken
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#define VCRGenericString g_pVCR->GenericString
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#define VCRGenericValueVerify g_pVCR->GenericValueVerify
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#define VCRHook_Sys_FloatTime g_pVCR->Hook_Sys_FloatTime
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#define VCRHook_PeekMessage g_pVCR->Hook_PeekMessage
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#define VCRHook_RecordGameMsg g_pVCR->Hook_RecordGameMsg
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#define VCRHook_RecordEndGameMsg g_pVCR->Hook_RecordEndGameMsg
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#define VCRHook_PlaybackGameMsg g_pVCR->Hook_PlaybackGameMsg
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#define VCRHook_recvfrom g_pVCR->Hook_recvfrom
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#define VCRHook_GetCursorPos g_pVCR->Hook_GetCursorPos
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#define VCRHook_ScreenToClient g_pVCR->Hook_ScreenToClient
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#define VCRHook_Cmd_Exec g_pVCR->Hook_Cmd_Exec
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#define VCRHook_GetCommandLine g_pVCR->Hook_GetCommandLine
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#define VCRHook_RegOpenKeyEx g_pVCR->Hook_RegOpenKeyEx
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#define VCRHook_RegSetValueEx g_pVCR->Hook_RegSetValueEx
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#define VCRHook_RegQueryValueEx g_pVCR->Hook_RegQueryValueEx
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#define VCRHook_RegCreateKeyEx g_pVCR->Hook_RegCreateKeyEx
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#define VCRHook_RegCloseKey g_pVCR->Hook_RegCloseKey
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#define VCRHook_GetNumberOfConsoleInputEvents g_pVCR->Hook_GetNumberOfConsoleInputEvents
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#define VCRHook_ReadConsoleInput g_pVCR->Hook_ReadConsoleInput
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#define VCRHook_LocalTime g_pVCR->Hook_LocalTime
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#define VCRHook_GetKeyState g_pVCR->Hook_GetKeyState
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#define VCRHook_recv g_pVCR->Hook_recv
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#define VCRHook_send g_pVCR->Hook_send
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#define VCRGenericRecord g_pVCR->GenericRecord
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#define VCRGenericPlayback g_pVCR->GenericPlayback
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#define VCRGenericValue g_pVCR->GenericValue
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#define VCRGetPercentCompleted g_pVCR->GetPercentCompleted
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#define VCRHook_CreateThread g_pVCR->Hook_CreateThread
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#define VCRHook_WaitForSingleObject g_pVCR->Hook_WaitForSingleObject
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#define VCRHook_EnterCriticalSection g_pVCR->Hook_EnterCriticalSection
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#define VCRHook_Time g_pVCR->Hook_Time
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#define VCRHook_WaitForMultipleObjects( a, b, c, d) g_pVCR->Hook_WaitForMultipleObjects( a, (const void **)b, c, d)
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#else
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#define VCRStart( a, b, c ) (1)
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#define VCREnd ((void)(0))
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#define VCRGetVCRTraceInterface (NULL)
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#define VCRGetMode() (VCR_Disabled)
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#define VCRSetEnabled( a ) ((void)(0))
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#define VCRSyncToken( a ) ((void)(0))
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#define VCRGenericRecord MUST_IFDEF_OUT_GenericRecord
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#define VCRGenericPlayback MUST_IFDEF_OUT_GenericPlayback
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#define VCRGenericValue MUST_IFDEF_OUT_GenericValue
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#define VCRGenericString MUST_IFDEF_OUT_GenericString
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#define VCRGenericValueVerify MUST_IFDEF_OUT_GenericValueVerify
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#define VCRGetPercentCompleted() (0.0f)
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#define VCRHook_Sys_FloatTime Sys_FloatTime
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#define VCRHook_PeekMessage PeekMessage
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#define VCRHook_RecordGameMsg RecordGameMsg
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#define VCRHook_RecordEndGameMsg RecordEndGameMsg
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#define VCRHook_PlaybackGameMsg PlaybackGameMsg
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#define VCRHook_recvfrom recvfrom
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#define VCRHook_GetCursorPos GetCursorPos
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#define VCRHook_ScreenToClient ScreenToClient
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#define VCRHook_Cmd_Exec( a ) ((void)(0))
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#define VCRHook_GetCommandLine GetCommandLine
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#define VCRHook_RegOpenKeyEx RegOpenKeyEx
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#define VCRHook_RegSetValueEx RegSetValueEx
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#define VCRHook_RegQueryValueEx RegQueryValueEx
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#define VCRHook_RegCreateKeyEx RegCreateKeyEx
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#define VCRHook_RegCloseKey RegCloseKey
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#define VCRHook_GetNumberOfConsoleInputEvents GetNumberOfConsoleInputEvents
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#define VCRHook_ReadConsoleInput ReadConsoleInput
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#define VCRHook_LocalTime( a ) memset(a, 0, sizeof(*a));
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#define VCRHook_GetKeyState GetKeyState
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#define VCRHook_recv recv
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#define VCRHook_send send
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#if defined( _X360 )
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#define VCRHook_CreateThread CreateThread
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#else
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#define VCRHook_CreateThread (void*)_beginthreadex
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#endif
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#define VCRHook_WaitForSingleObject WaitForSingleObject
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#define VCRHook_EnterCriticalSection EnterCriticalSection
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#define VCRHook_WaitForMultipleObjects( a, b, c, d) WaitForMultipleObjects( a, (const HANDLE *)b, c, d)
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#define VCRHook_Time Time
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#endif
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#endif // VCRMODE_H
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