127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef SEEDS_H
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#define SEEDS_H
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/** Weight of a seed in kilograms (all kind of seeds have the same weight)
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*/
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const double SeedWeigth = 0.01;
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/** Money of Ryzom (seeds)
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* There are 4 kind of seeds :
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* - little seeds (LS)
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* - medium seeds (MS). One MS is worth 10 LS.
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* - big seeds (BS). One BS is worth 10 MS.
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* - very big seeds (VBS). One VBS is worth 10 BS.
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*
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* Overflow is managed.
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*
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* \author Nicolas Vizerie
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* \author Nevrax France
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* \date 2002
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*/
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class CSeeds
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{
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public:
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typedef uint32 TUInt; // type of integer to count number of seeds for a slot.
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typedef uint64 TBigUInt; // type of integer to count the total number of seeds.
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enum { MaxUIntValue = INT_MAX };
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public:
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// ctruct with the given quantity of money
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CSeeds(TUInt ls = 0, TUInt ms = 0, TUInt bs = 0, TUInt vbs = 0) : _LS(ls), _MS(ms), _BS(bs), _VBS(vbs)
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{
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}
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// set the given total by using the smallest number of seeds
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void setTotal(TBigUInt total);
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// gets
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TUInt getLS() const { return _LS; }
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TUInt getMS() const { return _MS; }
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TUInt getBS() const { return _BS; }
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TUInt getVBS() const { return _VBS; }
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// sets
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void setLS(TUInt quantity) { _LS = quantity; }
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void setMS(TUInt quantity) { _MS = quantity; }
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void setBS(TUInt quantity) { _BS = quantity; }
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void setVBS(TUInt quantity) { _VBS = quantity; }
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// get money total (expressed in little seeds)
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TBigUInt getTotal() const { return (TBigUInt) _LS + 10 * (TBigUInt) _MS + 100 * (TBigUInt) _BS + 1000 * (TBigUInt) _VBS; }
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/** Add a number of seeds.
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* If an overflow is detected, only the maximum value is added, & overflow is filled with the difference
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*/
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void add(const CSeeds &other, CSeeds &overflow);
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/** Subtract a number of seeds. Begin to subtract the littlest seeds.
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* Always works provided that the total of the subtracted seeds is < to the total of the target.
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* Should test it yourself otherwise an assert is raised.
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* This is typically used when you buy something to a merchant
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*/
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void tradeSubtract(const CSeeds &other);
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void tradeSubtract(TBigUInt rhs);
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//
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bool canTradeSubtract(const CSeeds &other) const;
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bool canTradeSubtract(TBigUInt rhs) const;
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//
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// Subtract the given quantity to this obj on a per seeds basis. Must ensure that it is possible
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void subtract(const CSeeds &other);
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// Test if the given quantity can be subtracted to this obj
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bool canSubtract(const CSeeds &other) const;
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// Optimize a quantity of money so that the number of seeds is minimum
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void optimize();
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// serial
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void serial(NLMISC::IStream &f) throw(NLMISC::EStream)
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{
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f.serial( _LS, _MS, _BS, _VBS);
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}
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// get the weight of all seeds
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double getWeight() const { return SeedWeigth * (_LS + _MS + _BS + _VBS); }
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/////////////////////////////////////////////////////
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private:
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TUInt _LS; // little seeds
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TUInt _MS; // medium seeds
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TUInt _BS; // big seeds
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TUInt _VBS; // very big seeds
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};
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#endif
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