Method IsMajorUpdatedTree

src/filefinder.cpp:526–572

}

bool FileFinder::IsMajorUpdatedTree() {
	auto fs = Game();
	assert(fs);

	// Find an MP3 music file only when official Harmony.dll exists
	// in the gamedir or the file doesn't exist because
	// the detection doesn't return reliable results for games created with
	// "RPG2k non-official English translation (older engine) + MP3 patch"
	bool find_mp3 = true;
	std::string harmony = Game().FindFile("Harmony.dll");
	if (!harmony.empty()) {
		auto size = fs.GetFilesize(harmony);
		if (size != -1 && size != KnownFileSize::OFFICIAL_HARMONY_DLL) {
			Output::Debug("Non-official Harmony.dll found, skipping MP3 test");
			find_mp3 = false;
		}
	}

	if (find_mp3) {
		auto entries = fs.ListDirectory("music");
		if (entries) {
			for (const auto& entry : *entries) {
				if (entry.second.type == DirectoryTree::FileType::Regular && EndsWith(entry.first, ".mp3")) {
					Output::Debug("MP3 file ({}) found", entry.second.name);
					return true;
				}
			}
		}
	}

	// Compare the size of RPG_RT.exe with threshold
	std::string rpg_rt = Game().FindFile("RPG_RT.exe");
	if (!rpg_rt.empty()) {
		auto size = fs.GetFilesize(rpg_rt);
		if (size != -1) {
			return size > (Player::IsRPG2k() ? RpgrtMajorUpdateThreshold::RPG2K : RpgrtMajorUpdateThreshold::RPG2K3);
		}
	}
	Output::Debug("Could not get the size of RPG_RT.exe");

	// Assume the most popular version
	// Japanese or RPG2k3 games: newer engine
	// non-Japanese RPG2k games: older engine
	bool assume_newer = Player::IsCP932() || Player::IsRPG2k3();
	Output::Debug("Assuming {} engine", assume_newer ? "newer" : "older");
	return assume_newer;
}

std::string FileFinder::GetFullFilesystemPath(FilesystemView fs) {
	FilesystemView cur_fs = fs;