NScumm.Scumm.ScummEngine2.SaveLoadGame C# (CSharp) Метод

        protected void SaveLoadGame()
        {
            GetResult();
            var a = GetVarOrDirectByte(OpCodeParameter.Param1);
            var result = 0;

            var slot = a & 0x1F;
            // Slot numbers in older games start with 0, in newer games with 1
            if (Game.Version <= 2)
                slot++;
            _opCode = (byte)(a & 0xE0);

            switch (_opCode)
            {
                case 0x00: // num slots available
                    result = 100;
                    break;
                case 0x20: // drive
                    if (Game.Version <= 3)
                    {
                        // 0 = ???
                        // [1,2] = disk drive [A:,B:]
                        // 3 = hard drive
                        result = 3;
                    }
                    else
                    {
                        // set current drive
                        result = 1;
                    }
                    break;
                case 0x40: // load
                    if (LoadState(slot, false))
                        result = 3; // sucess
                    else
                        result = 5; // failed to load
                    break;
                case 0x80: // save
                    if (Game.Version <= 3)
                    {
                        string name;
                        if (Game.Version <= 2)
                        {
                            // use generic name
                            name = string.Format("Game {0}", (char)('A' + slot - 1));
                        }
                        else
                        {
                            // use name entered by the user
                            var firstSlot = StringIdSavename1;
							name = _strings[slot + firstSlot - 1].GetText();
                        }

                        if (SavePreparedSavegame(slot, name))
                            result = 0;
                        else
                            result = 2;
                    }
                    else
                    {
                        result = 2; // failed to save
                    }
                    break;
                case 0xC0: // test if save exists
                    {
                        var availSaves = ListSavegames(100);
                        var filename = MakeSavegameName(slot, false);
                        var directory = ServiceLocator.FileStorage.GetDirectoryName(Game.Path);
                        if (availSaves[slot] && (ServiceLocator.FileStorage.FileExists(ServiceLocator.FileStorage.Combine(directory, filename))))
                        {
                            result = 6; // save file exists
                        }
                        else
                        {
                            result = 7; // save file does not exist
                        }
                    }
                    break;
                    //                default:
                    //                    error("o4_saveLoadGame: unknown subopcode %d", _opcode);
            }

            SetResult(result);
        }