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/*
* ResourceSet.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
typedef si32 TResource;
typedef si64 TResourceCap; //to avoid overflow when adding integers. Signed values are easier to control.
class JsonNode;
class JsonSerializeFormat;
namespace Res
{
class ResourceSet;
bool canAfford(const ResourceSet &res, const ResourceSet &price); //can a be used to pay price b
enum ERes
{
WOOD = 0, MERCURY, ORE, SULFUR, CRYSTAL, GEMS, GOLD, MITHRIL,
WOOD_AND_ORE = 127, // special case for town bonus resource
INVALID = -1
};
//class to be representing a vector of resource
class ResourceSet : public std::vector<int>
{
public:
DLL_LINKAGE ResourceSet();
// read resources set from json. Format example: { "gold": 500, "wood":5 }
DLL_LINKAGE ResourceSet(const JsonNode & node);
DLL_LINKAGE ResourceSet(TResource wood, TResource mercury, TResource ore, TResource sulfur, TResource crystal,
TResource gems, TResource gold, TResource mithril = 0);
#define scalarOperator(OPSIGN) \
ResourceSet operator OPSIGN(const TResource &rhs) const \
{ \
ResourceSet ret = *this; \
for(int i = 0; i < (int)size(); i++) \
ret[i] = at(i) OPSIGN rhs; \
\
return ret; \
}
#define vectorOperator(OPSIGN) \
ResourceSet operator OPSIGN(const ResourceSet &rhs) const \
{ \
ResourceSet ret = *this; \
for(int i = 0; i < (int)size(); i++) \
ret[i] = at(i) OPSIGN rhs[i]; \
\
return ret; \
}
#define opEqOperator(OPSIGN, RHS_TYPE) \
ResourceSet& operator OPSIGN ## =(const RHS_TYPE &rhs) \
{ \
return *this = *this OPSIGN rhs; \
}
scalarOperator(+)
scalarOperator(-)
scalarOperator(*)
scalarOperator(/)
opEqOperator(+, TResource)
opEqOperator(-, TResource)
opEqOperator(*, TResource)
vectorOperator(+)
vectorOperator(-)
opEqOperator(+, ResourceSet)
opEqOperator(-, ResourceSet)
#undef scalarOperator
#undef vectorOperator
#undef opEqOperator
//to be used for calculations of type "how many units of sth can I afford?"
int operator/(const ResourceSet &rhs)
{
int ret = INT_MAX;
for(int i = 0; i < (int)size(); i++)
if(rhs[i])
vstd::amin(ret, at(i) / rhs[i]);
return ret;
}
ResourceSet & operator=(const TResource &rhs)
{
for(int i = 0; i < (int)size(); i++)
at(i) = rhs;
return *this;
}
ResourceSet operator-() const
{
ResourceSet ret;
for(int i = 0; i < (int)size(); i++)
ret[i] = -at(i);
return ret;
}
// WARNING: comparison operators are used for "can afford" relation: a <= b means that foreach i a[i] <= b[i]
// 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
// bool operator<(const ResourceSet &rhs)
// {
// for(int i = 0; i < size(); i++)
// if(at(i) >= rhs[i])
// return false;
//
// return true;
// }
template <typename Handler> void serialize(Handler &h, const int version)
{
h & static_cast<std::vector<int>&>(*this);
}
DLL_LINKAGE void serializeJson(JsonSerializeFormat & handler, const std::string & fieldName);
DLL_LINKAGE void amax(const TResourceCap &val); //performs vstd::amax on each element
DLL_LINKAGE void amin(const TResourceCap &val); //performs vstd::amin on each element
DLL_LINKAGE void positive(); //values below 0 are set to 0 - upgrade cost can't be negative, for example
DLL_LINKAGE bool nonZero() const; //returns true if at least one value is non-zero;
DLL_LINKAGE bool canAfford(const ResourceSet &price) const;
DLL_LINKAGE bool canBeAfforded(const ResourceSet &res) const;
DLL_LINKAGE TResourceCap marketValue() const;
DLL_LINKAGE std::string toString() const;
//special iterator of iterating over non-zero resources in set
class DLL_LINKAGE nziterator
{
struct ResEntry
{
Res::ERes resType;
TResourceCap resVal;
} cur;
const ResourceSet &rs;
void advance();
public:
nziterator(const ResourceSet &RS);
bool valid();
nziterator operator++();
nziterator operator++(int);
const ResEntry& operator*() const;
const ResEntry* operator->() const;
};
};
}
typedef Res::ResourceSet TResources;
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