khanat-opennel-code/code/ryzom/common/src/game_share/seeds.h
2010-05-06 02:08:41 +02:00

127 lines
3.8 KiB
C++

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