Method AllocPooledString

core/HalfLife2.cpp:1479–1539

#endif

string_t CHalfLife2::AllocPooledString(const char *pszValue)
{
	// This is admittedly a giant hack, but it's a relatively safe method for
	// inserting a string into the game's string pool that isn't likely to break.
	//
	// We find the first valid ent (should always be worldspawn), save off it's
	// current targetname string_t, set it to our string to insert via SetKeyValue,
	// read back the new targetname value, restore the old value, and return the new one.

#if SOURCE_ENGINE < SE_ORANGEBOX
	CBaseEntity* pEntity = nullptr;
	for (int i = 0; i < gpGlobals->maxEntities; ++i)
	{
		pEntity = ReferenceToEntity(i);
		if (pEntity)
		{
			break;
		}
	}

	if (!pEntity)
	{
		logger->LogError("Failed to locate a valid entity for AllocPooledString.");
		return NULL_STRING;
	}

#else
	CBaseEntity *pEntity = ((IServerUnknown *) servertools->FirstEntity())->GetBaseEntity();
#endif
	auto *pDataMap = GetDataMap(pEntity);
	assert(pDataMap);

	static int iNameOffset = -1;
	if (iNameOffset == -1)
	{
		sm_datatable_info_t info;
		bool found = FindDataMapInfo(pDataMap, "m_iName", &info);
		assert(found);
		iNameOffset = info.actual_offset;
	}

	string_t* pProp = (string_t*)((intp)pEntity + iNameOffset);
	string_t backup = *pProp;

#if SOURCE_ENGINE < SE_ORANGEBOX
	static int iFuncOffset;
	if (!g_pGameConf->GetOffset("DispatchKeyValue", &iFuncOffset) || !iFuncOffset)
	{
		logger->LogError("Failed to locate DispatchKeyValue in core gamedata. AllocPooledString unsupported.");
		return NULL_STRING;
	}
	VKeyValuesSS(pEntity, "targetname", pszValue, iFuncOffset);
#else	
	servertools->SetKeyValue(pEntity, "targetname", pszValue);
#endif

	string_t newString = *pProp;
	*pProp = backup;