#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; }