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Diffstat (limited to 'NorthstarDLL/convar.cpp')
| -rw-r--r-- | NorthstarDLL/convar.cpp | 511 |
1 files changed, 511 insertions, 0 deletions
diff --git a/NorthstarDLL/convar.cpp b/NorthstarDLL/convar.cpp new file mode 100644 index 00000000..bf8edbf9 --- /dev/null +++ b/NorthstarDLL/convar.cpp @@ -0,0 +1,511 @@ +#include <float.h> + +#include "pch.h" +#include "bits.h" +#include "cvar.h" +#include "convar.h" +#include "hookutils.h" +#include "gameutils.h" +#include "sourceinterface.h" + +typedef void (*ConVarRegisterType)( + ConVar* pConVar, + const char* pszName, + const char* pszDefaultValue, + int nFlags, + const char* pszHelpString, + bool bMin, + float fMin, + bool bMax, + float fMax, + void* pCallback); +ConVarRegisterType conVarRegister; + +typedef void (*ConVarMallocType)(void* pConVarMaloc, int a2, int a3); +ConVarMallocType conVarMalloc; + +void* g_pConVar_Vtable = nullptr; +void* g_pIConVar_Vtable = nullptr; + +typedef bool (*CvarIsFlagSetType)(ConVar* self, int flags); +CvarIsFlagSetType CvarIsFlagSet; + +//----------------------------------------------------------------------------- +// Purpose: ConVar interface initialization +//----------------------------------------------------------------------------- +void InitialiseConVars(HMODULE baseAddress) +{ + conVarMalloc = (ConVarMallocType)((char*)baseAddress + 0x415C20); + conVarRegister = (ConVarRegisterType)((char*)baseAddress + 0x417230); + + g_pConVar_Vtable = (char*)baseAddress + 0x67FD28; + g_pIConVar_Vtable = (char*)baseAddress + 0x67FDC8; + + g_pCVarInterface = new SourceInterface<CCvar>("vstdlib.dll", "VEngineCvar007"); + g_pCVar = *g_pCVarInterface; + + HookEnabler hook; + ENABLER_CREATEHOOK(hook, (char*)baseAddress + 0x417FA0, &ConVar::IsFlagSet, reinterpret_cast<LPVOID*>(&CvarIsFlagSet)); +} + +//----------------------------------------------------------------------------- +// Purpose: constructor +//----------------------------------------------------------------------------- +ConVar::ConVar(const char* pszName, const char* pszDefaultValue, int nFlags, const char* pszHelpString) +{ + spdlog::info("Registering Convar {}", pszName); + + this->m_ConCommandBase.m_pConCommandBaseVTable = g_pConVar_Vtable; + this->m_ConCommandBase.s_pConCommandBases = (ConCommandBase*)g_pIConVar_Vtable; + + conVarMalloc(&this->m_pMalloc, 0, 0); // Allocate new memory for ConVar. + conVarRegister(this, pszName, pszDefaultValue, nFlags, pszHelpString, 0, 0, 0, 0, 0); +} + +//----------------------------------------------------------------------------- +// Purpose: constructor +//----------------------------------------------------------------------------- +ConVar::ConVar( + const char* pszName, + const char* pszDefaultValue, + int nFlags, + const char* pszHelpString, + bool bMin, + float fMin, + bool bMax, + float fMax, + void* pCallback) +{ + spdlog::info("Registering Convar {}", pszName); + + this->m_ConCommandBase.m_pConCommandBaseVTable = g_pConVar_Vtable; + this->m_ConCommandBase.s_pConCommandBases = (ConCommandBase*)g_pIConVar_Vtable; + + conVarMalloc(&this->m_pMalloc, 0, 0); // Allocate new memory for ConVar. + conVarRegister(this, pszName, pszDefaultValue, nFlags, pszHelpString, bMin, fMin, bMax, fMax, pCallback); +} + +//----------------------------------------------------------------------------- +// Purpose: destructor +//----------------------------------------------------------------------------- +ConVar::~ConVar(void) +{ + if (m_Value.m_pszString) + delete[] m_Value.m_pszString; +} + +//----------------------------------------------------------------------------- +// Purpose: Returns the base ConVar name. +// Output : const char* +//----------------------------------------------------------------------------- +const char* ConVar::GetBaseName(void) const +{ + return m_ConCommandBase.m_pszName; +} + +//----------------------------------------------------------------------------- +// Purpose: Returns the ConVar help text. +// Output : const char* +//----------------------------------------------------------------------------- +const char* ConVar::GetHelpText(void) const +{ + return m_ConCommandBase.m_pszHelpString; +} + +//----------------------------------------------------------------------------- +// Purpose: Add's flags to ConVar. +// Input : nFlags - +//----------------------------------------------------------------------------- +void ConVar::AddFlags(int nFlags) +{ + m_ConCommandBase.m_nFlags |= nFlags; +} + +//----------------------------------------------------------------------------- +// Purpose: Removes flags from ConVar. +// Input : nFlags - +//----------------------------------------------------------------------------- +void ConVar::RemoveFlags(int nFlags) +{ + m_ConCommandBase.m_nFlags &= ~nFlags; +} + +//----------------------------------------------------------------------------- +// Purpose: Return ConVar value as a boolean. +// Output : bool +//----------------------------------------------------------------------------- +bool ConVar::GetBool(void) const +{ + return !!GetInt(); +} + +//----------------------------------------------------------------------------- +// Purpose: Return ConVar value as a float. +// Output : float +//----------------------------------------------------------------------------- +float ConVar::GetFloat(void) const +{ + return m_Value.m_fValue; +} + +//----------------------------------------------------------------------------- +// Purpose: Return ConVar value as an integer. +// Output : int +//----------------------------------------------------------------------------- +int ConVar::GetInt(void) const +{ + return m_Value.m_nValue; +} + +//----------------------------------------------------------------------------- +// Purpose: Return ConVar value as a color. +// Output : Color +//----------------------------------------------------------------------------- +Color ConVar::GetColor(void) const +{ + unsigned char* pColorElement = ((unsigned char*)&m_Value.m_nValue); + return Color(pColorElement[0], pColorElement[1], pColorElement[2], pColorElement[3]); +} + +//----------------------------------------------------------------------------- +// Purpose: Return ConVar value as a string. +// Output : const char * +//----------------------------------------------------------------------------- +const char* ConVar::GetString(void) const +{ + if (m_ConCommandBase.m_nFlags & FCVAR_NEVER_AS_STRING) + { + return "FCVAR_NEVER_AS_STRING"; + } + + char const* str = m_Value.m_pszString; + return str ? str : ""; +} + +//----------------------------------------------------------------------------- +// Purpose: +// Input : flMinVal - +// Output : true if there is a min set. +//----------------------------------------------------------------------------- +bool ConVar::GetMin(float& flMinVal) const +{ + flMinVal = m_fMinVal; + return m_bHasMin; +} + +//----------------------------------------------------------------------------- +// Purpose: +// Input : flMaxVal - +// Output : true if there is a max set. +//----------------------------------------------------------------------------- +bool ConVar::GetMax(float& flMaxVal) const +{ + flMaxVal = m_fMaxVal; + return m_bHasMax; +} + +//----------------------------------------------------------------------------- +// Purpose: returns the min value. +// Output : float +//----------------------------------------------------------------------------- +float ConVar::GetMinValue(void) const +{ + return m_fMinVal; +} + +//----------------------------------------------------------------------------- +// Purpose: returns the max value. +// Output : float +//----------------------------------------------------------------------------- +float ConVar::GetMaxValue(void) const +{ + return m_fMaxVal; + ; +} + +//----------------------------------------------------------------------------- +// Purpose: checks if ConVar has min value. +// Output : bool +//----------------------------------------------------------------------------- +bool ConVar::HasMin(void) const +{ + return m_bHasMin; +} + +//----------------------------------------------------------------------------- +// Purpose: checks if ConVar has max value. +// Output : bool +//----------------------------------------------------------------------------- +bool ConVar::HasMax(void) const +{ + return m_bHasMax; +} + +//----------------------------------------------------------------------------- +// Purpose: sets the ConVar int value. +// Input : nValue - +//----------------------------------------------------------------------------- +void ConVar::SetValue(int nValue) +{ + if (nValue == m_Value.m_nValue) + { + return; + } + + float flValue = (float)nValue; + + // Check bounds. + if (ClampValue(flValue)) + { + nValue = (int)(flValue); + } + + // Redetermine value. + float flOldValue = m_Value.m_fValue; + m_Value.m_fValue = flValue; + m_Value.m_nValue = nValue; + + if (!(m_ConCommandBase.m_nFlags & FCVAR_NEVER_AS_STRING)) + { + char szTempValue[32]; + snprintf(szTempValue, sizeof(szTempValue), "%d", m_Value.m_nValue); + ChangeStringValue(szTempValue, flOldValue); + } +} + +//----------------------------------------------------------------------------- +// Purpose: sets the ConVar float value. +// Input : flValue - +//----------------------------------------------------------------------------- +void ConVar::SetValue(float flValue) +{ + if (flValue == m_Value.m_fValue) + { + return; + } + + // Check bounds. + ClampValue(flValue); + + // Redetermine value. + float flOldValue = m_Value.m_fValue; + m_Value.m_fValue = flValue; + m_Value.m_nValue = (int)m_Value.m_fValue; + + if (!(m_ConCommandBase.m_nFlags & FCVAR_NEVER_AS_STRING)) + { + char szTempValue[32]; + snprintf(szTempValue, sizeof(szTempValue), "%f", m_Value.m_fValue); + ChangeStringValue(szTempValue, flOldValue); + } +} + +//----------------------------------------------------------------------------- +// Purpose: sets the ConVar string value. +// Input : *szValue - +//----------------------------------------------------------------------------- +void ConVar::SetValue(const char* pszValue) +{ + if (strcmp(this->m_Value.m_pszString, pszValue) == 0) + { + return; + } + this->m_Value.m_pszString = pszValue; + + char szTempValue[32] {}; + const char* pszNewValue {}; + + float flOldValue = m_Value.m_fValue; + pszNewValue = (char*)pszValue; + if (!pszNewValue) + { + pszNewValue = ""; + } + + if (!SetColorFromString(pszValue)) + { + // Not a color, do the standard thing + float flNewValue = (float)atof(pszValue); + if (!IsFinite(flNewValue)) + { + spdlog::warn("Warning: ConVar '{}' = '{}' is infinite, clamping value.\n", GetBaseName(), pszValue); + flNewValue = FLT_MAX; + } + + if (ClampValue(flNewValue)) + { + snprintf(szTempValue, sizeof(szTempValue), "%f", flNewValue); + pszNewValue = szTempValue; + } + + // Redetermine value + m_Value.m_fValue = flNewValue; + m_Value.m_nValue = (int)(m_Value.m_fValue); + } + + if (!(m_ConCommandBase.m_nFlags & FCVAR_NEVER_AS_STRING)) + { + ChangeStringValue(pszNewValue, flOldValue); + } +} + +//----------------------------------------------------------------------------- +// Purpose: sets the ConVar color value. +// Input : clValue - +//----------------------------------------------------------------------------- +void ConVar::SetValue(Color clValue) +{ + std::string svResult = ""; + + for (int i = 0; i < 4; i++) + { + if (!(clValue.GetValue(i) == 0 && svResult.size() == 0)) + { + svResult += std::to_string(clValue.GetValue(i)); + svResult.append(" "); + } + } + + this->m_Value.m_pszString = svResult.c_str(); +} + +//----------------------------------------------------------------------------- +// Purpose: changes the ConVar string value. +// Input : *pszTempVal - flOldValue +//----------------------------------------------------------------------------- +void ConVar::ChangeStringValue(const char* pszTempVal, float flOldValue) +{ + assert(!(m_ConCommandBase.m_nFlags & FCVAR_NEVER_AS_STRING)); + + char* pszOldValue = (char*)_malloca(m_Value.m_iStringLength); + if (pszOldValue != NULL) + { + memcpy(pszOldValue, m_Value.m_pszString, m_Value.m_iStringLength); + } + + if (pszTempVal) + { + int len = strlen(pszTempVal) + 1; + + if (len > m_Value.m_iStringLength) + { + if (m_Value.m_pszString) + { + // !TODO: Causes issues in tier0.dll, but doesn't in apex. + // Not a big issue since we are creating a new string below + // anyways to prevent buffer overflow if string is longer + // then the old string. + // delete[] m_Value.m_pszString; + } + + m_Value.m_pszString = new char[len]; + m_Value.m_iStringLength = len; + } + + memcpy((char*)m_Value.m_pszString, pszTempVal, len); + } + else + { + m_Value.m_pszString = NULL; + } + + pszOldValue = 0; +} + +//----------------------------------------------------------------------------- +// Purpose: sets the ConVar color value from string. +// Input : *pszValue - +//----------------------------------------------------------------------------- +bool ConVar::SetColorFromString(const char* pszValue) +{ + bool bColor = false; + + // Try pulling RGBA color values out of the string. + int nRGBA[4] {}; + int nParamsRead = sscanf_s(pszValue, "%i %i %i %i", &(nRGBA[0]), &(nRGBA[1]), &(nRGBA[2]), &(nRGBA[3])); + + if (nParamsRead >= 3) + { + // This is probably a color! + if (nParamsRead == 3) + { + // Assume they wanted full alpha. + nRGBA[3] = 255; + } + + if (nRGBA[0] >= 0 && nRGBA[0] <= 255 && nRGBA[1] >= 0 && nRGBA[1] <= 255 && nRGBA[2] >= 0 && nRGBA[2] <= 255 && nRGBA[3] >= 0 && + nRGBA[3] <= 255) + { + // printf("*** WOW! Found a color!! ***\n"); + + // This is definitely a color! + bColor = true; + + // Stuff all the values into each byte of our int. + unsigned char* pColorElement = ((unsigned char*)&m_Value.m_nValue); + pColorElement[0] = nRGBA[0]; + pColorElement[1] = nRGBA[1]; + pColorElement[2] = nRGBA[2]; + pColorElement[3] = nRGBA[3]; + + // Copy that value into our float. + m_Value.m_fValue = (float)(m_Value.m_nValue); + } + } + + return bColor; +} + +//----------------------------------------------------------------------------- +// Purpose: Checks if ConVar is registered. +// Output : bool +//----------------------------------------------------------------------------- +bool ConVar::IsRegistered(void) const +{ + return m_ConCommandBase.m_bRegistered; +} + +//----------------------------------------------------------------------------- +// Purpose: Returns true if this is a command +// Output : bool +//----------------------------------------------------------------------------- +bool ConVar::IsCommand(void) const +{ + return false; +} + +//----------------------------------------------------------------------------- +// Purpose: Test each ConVar query before setting the value. +// Input : *pConVar - nFlags +// Output : False if change is permitted, true if not. +//----------------------------------------------------------------------------- +bool ConVar::IsFlagSet(ConVar* pConVar, int nFlags) +{ + // unrestrict FCVAR_DEVELOPMENTONLY and FCVAR_HIDDEN + if (pConVar && (nFlags == FCVAR_DEVELOPMENTONLY || nFlags == FCVAR_HIDDEN)) + return false; + + return CvarIsFlagSet(pConVar, nFlags); +} + +//----------------------------------------------------------------------------- +// Purpose: Check whether to clamp and then perform clamp. +// Input : flValue - +// Output : Returns true if value changed. +//----------------------------------------------------------------------------- +bool ConVar::ClampValue(float& flValue) +{ + if (m_bHasMin && (flValue < m_fMinVal)) + { + flValue = m_fMinVal; + return true; + } + + if (m_bHasMax && (flValue > m_fMaxVal)) + { + flValue = m_fMaxVal; + return true; + } + + return false; +} |