Function SaveFileToDisk

src/saveload/saveload.cpp:2989–3026

* We have written the whole game into memory, _memory_savegame, now find * and appropriate compressor and start writing to file. */

 * and appropriate compressor and start writing to file.
 */
static SaveOrLoadResult SaveFileToDisk(bool threaded)
{
	try {
		auto [fmt, compression] = GetSavegameFormat(_savegame_format);

		/* We have written our stuff to memory, now write it to file! */
		uint32_t hdr[2] = { fmt.tag, TO_BE32(SAVEGAME_VERSION << 16) };
		_sl.sf->Write((uint8_t*)hdr, sizeof(hdr));

		_sl.sf = fmt.init_write(_sl.sf, compression);
		_sl.dumper->Flush(_sl.sf);

		ClearSaveLoadState();

		if (threaded) SetAsyncSaveFinish(SaveFileDone);

		return SL_OK;
	} catch (...) {
		ClearSaveLoadState();

		AsyncSaveFinishProc asfp = SaveFileDone;

		/* We don't want to shout when saving is just
		 * cancelled due to a client disconnecting. */
		if (_sl.error_str != STR_NETWORK_ERROR_LOSTCONNECTION) {
			/* Skip the "colour" character */
			Debug(sl, 0, "{}", GetSaveLoadErrorType().GetDecodedString().substr(3) + GetSaveLoadErrorMessage().GetDecodedString());
			asfp = SaveFileError;
		}

		if (threaded) {
			SetAsyncSaveFinish(asfp);
		} else {
			asfp();
		}
		return SL_ERROR;
	}
}

void WaitTillSaved()
{