Method LoadPatterns

Source/FamiTrackerDocIO.cpp:779–943

}

void CFamiTrackerDocIO::LoadPatterns(CFamiTrackerModule &modfile, int ver) {
	fds_adjust_arps_ = ver < 5;		// // //
	bool compat200 = (file_.GetFileVersion() == 0x0200);		// // //

	if (ver == 1) {
		int PatternLen = AssertRange(file_.GetBlockInt(), 0, MAX_PATTERN_LENGTH, "Pattern data count");
		modfile.GetSong(0)->SetPatternLength(PatternLen);
	}

	const CChannelOrder &order = modfile.GetChannelOrder();		// // //

	while (!file_.BlockDone()) {
		unsigned Track = 0;
		if (ver > 1)
			Track = AssertRange(file_.GetBlockInt(), 0, static_cast<int>(MAX_TRACKS) - 1, "Pattern song index");

		unsigned Channel = AssertRange((unsigned)file_.GetBlockInt(), 0u, CHANID_COUNT - 1, "Pattern track index");
		AssertRange<MODULE_ERROR_OFFICIAL>(Channel, 0u, MAX_CHANNELS - 1, "Pattern track index");
		unsigned Pattern = AssertRange(file_.GetBlockInt(), 0, MAX_PATTERN - 1, "Pattern index");
		unsigned Items	= AssertRange(file_.GetBlockInt(), 0, MAX_PATTERN_LENGTH, "Pattern data count");
		stChannelID ch = order.TranslateChannel(Channel);

		auto *pSong = modfile.GetSong(Track);

		for (unsigned i = 0; i < Items; ++i) try {
			unsigned Row;
			if (compat200 || ver >= 6)
				Row = static_cast<unsigned char>(file_.GetBlockChar());
			else
				Row = AssertRange(file_.GetBlockInt(), 0, 0xFF, "Row index");		// // //

			try {
				stChanNote Note;		// // //

				Note.Note = enum_cast<note_t>(AssertRange<MODULE_ERROR_STRICT>(		// // //
					file_.GetBlockChar(), value_cast(note_t::none), value_cast(note_t::echo), "Note value"));
				Note.Octave = AssertRange<MODULE_ERROR_STRICT>(
					file_.GetBlockChar(), 0, OCTAVE_RANGE - 1, "Octave value");
				int Inst = static_cast<unsigned char>(file_.GetBlockChar());
				if (Inst != HOLD_INSTRUMENT)		// // // 050B
					AssertRange<MODULE_ERROR_STRICT>(Inst, 0, CInstrumentManager::MAX_INSTRUMENTS, "Instrument index");
				Note.Instrument = Inst;
				Note.Vol = AssertRange<MODULE_ERROR_STRICT>(
					file_.GetBlockChar(), 0, MAX_VOLUME, "Channel volume");

				int FX = compat200 ? 1 : ver >= 6 ? MAX_EFFECT_COLUMNS :
					pSong->GetEffectColumnCount(order.TranslateChannel(Channel));		// // // 050B
				for (int n = 0; n < FX; ++n) try {
					auto EffectNumber = (effect_t)file_.GetBlockChar();
					if (Note.Effects[n].fx = static_cast<effect_t>(EffectNumber); Note.Effects[n].fx != effect_t::none) {
						AssertRange<MODULE_ERROR_STRICT>(value_cast(EffectNumber), value_cast(effect_t::none), value_cast(effect_t::max), "Effect index");
						unsigned char EffectParam = file_.GetBlockChar();
						if (ver < 3) {
							if (EffectNumber == effect_t::PORTAOFF) {
								EffectNumber = effect_t::PORTAMENTO;
								EffectParam = 0;
							}
							else if (EffectNumber == effect_t::PORTAMENTO) {