Method RefreshCache

Sources/Main.cpp:1526–1677

#if !defined(DEATH_TARGET_EMSCRIPTEN)
void GameEventHandler::RefreshCache()
{
	ZoneScopedC(0x888888);

	if (PreferencesCache::BypassCache) {
		LOGI("Cache is bypassed by command-line parameter");
		_flags |= Flags::IsVerified | Flags::IsPlayable;
		return;
	}

	constexpr std::uint64_t currentVersion = parseVersion(NCINE_VERSION_s);

	auto& resolver = ContentResolver::Get();
	auto cachePath = fs::CombinePath(resolver.GetCachePath(), "Source.idx"_s);

	// Check cache state
	{
		auto s = fs::Open(cachePath, FileAccess::Read);
		if (s->GetSize() < 16) {
			goto RecreateCache;
		}

		std::uint64_t signature = s->ReadValueAsLE<std::uint64_t>();
		std::uint8_t fileType = s->ReadValue<std::uint8_t>();
		std::uint16_t version = s->ReadValueAsLE<std::uint16_t>();
		if (signature != 0x2095A59FF0BFBBEF || fileType != ContentResolver::CacheIndexFile || version != Compatibility::JJ2Anims::CacheVersion) {
			goto RecreateCache;
		}

		std::uint8_t flags = s->ReadValue<std::uint8_t>();
		if ((flags & 0x01) == 0x01) {
			// Don't overwrite cache
			LOGI("Cache is protected");
			_flags |= Flags::IsVerified | Flags::IsPlayable;
			return;
		}

		String animsPath = fs::FindPathCaseInsensitive(fs::CombinePath(resolver.GetSourcePath(), "Anims.j2a"_s));
		if (!fs::IsReadableFile(animsPath)) {
			animsPath = fs::FindPathCaseInsensitive(fs::CombinePath(resolver.GetSourcePath(), "AnimsSw.j2a"_s));
		}
		std::int64_t animsCached = s->ReadValueAsLE<std::int64_t>();
		std::int64_t animsModified = fs::GetLastModificationTime(animsPath).ToUnixMilliseconds();
		if (animsModified != 0 && animsCached != animsModified) {
			goto RecreateCache;
		}

		// If some events were added, recreate cache
		std::uint16_t eventTypeCount = s->ReadValueAsLE<std::uint16_t>();
		if (eventTypeCount != (std::uint16_t)EventType::Count) {
			goto RecreateCache;
		}

		// Cache is up-to-date
		std::uint64_t lastVersion = s->ReadValueAsLE<std::uint64_t>();

		// Close the file, so it can be writable for possible update
		s = nullptr;