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126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
#pragma once
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#include "../global.h"
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#include <climits>
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typedef si32 TResource;
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namespace Res
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{
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class ResourceSet;
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bool canAfford(const ResourceSet &res, const ResourceSet &price); //can a be used to pay price b
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enum ERes
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{
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WOOD = 0, MERCURY, ORE, SULFUR, CRYSTAL, GEMS, GOLD, MITHRIL
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};
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//class to be representing a vector of resource
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class ResourceSet : public std::vector<int>
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{
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public:
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DLL_EXPORT ResourceSet();
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#define scalarOperator(OPSIGN) \
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DLL_EXPORT ResourceSet operator OPSIGN(const TResource &rhs) const \
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{ \
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ResourceSet ret = *this; \
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for(int i = 0; i < size(); i++) \
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ret[i] = at(i) OPSIGN rhs; \
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\
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return ret; \
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}
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#define vectorOperator(OPSIGN) \
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DLL_EXPORT ResourceSet operator OPSIGN(const ResourceSet &rhs) const \
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{ \
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ResourceSet ret = *this; \
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for(int i = 0; i < size(); i++) \
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ret[i] = at(i) OPSIGN rhs[i]; \
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\
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return ret; \
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}
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#define opEqOperator(OPSIGN, RHS_TYPE) \
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DLL_EXPORT ResourceSet& operator OPSIGN ## =(const RHS_TYPE &rhs) \
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{ \
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return *this = *this OPSIGN rhs; \
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}
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scalarOperator(+)
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scalarOperator(-)
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scalarOperator(*)
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scalarOperator(/)
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opEqOperator(+, TResource)
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opEqOperator(-, TResource)
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opEqOperator(*, TResource)
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vectorOperator(+)
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vectorOperator(-)
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opEqOperator(+, ResourceSet)
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opEqOperator(-, ResourceSet)
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#undef scalarOperator
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#undef vectorOperator
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#undef opEqOperator
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//to be used for calculations of type "how many units of sth can I afford?"
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DLL_EXPORT int operator/(const ResourceSet &rhs)
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{
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int ret = INT_MAX;
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for(int i = 0; i < size(); i++)
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if(rhs[i])
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amin(ret, at(i) / rhs[i]);
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return ret;
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}
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// WARNING: comparison operators are used for "can afford" relation: a <= b means that foreach i a[i] <= b[i]
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// that doesn't work the other way: a > b doesn't mean that a cannot be afforded with b, it's still b can afford a
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// bool operator<(const ResourceSet &rhs)
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// {
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// for(int i = 0; i < size(); i++)
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// if(at(i) >= rhs[i])
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// return false;
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//
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// return true;
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// }
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template <typename Handler> void serialize(Handler &h, const int version)
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{
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h & static_cast<std::vector<int>&>(*this);
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}
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DLL_EXPORT void amax(const TResource &val); //performs amax on each element
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DLL_EXPORT bool nonZero() const; //returns true if at least one value is non-zero;
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DLL_EXPORT bool canAfford(const ResourceSet &price) const;
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DLL_EXPORT bool canBeAfforded(const ResourceSet &res) const;
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//special iterator of iterating over non-zero resources in set
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class DLL_EXPORT nziterator
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{
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struct ResEntry
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{
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TResource resType, resVal;
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} cur;
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const ResourceSet &rs;
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void advance();
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public:
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nziterator(const ResourceSet &RS);
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bool valid();
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nziterator operator++();
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nziterator operator++(int);
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const ResEntry& operator*() const;
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const ResEntry* operator->() const;
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};
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};
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}
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typedef Res::ResourceSet TResources;
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