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vcmi/lib/int3.h
2011-12-13 21:35:28 +00:00

107 lines
2.9 KiB
C++

#pragma once
/*
* int3.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
*
*/
/// Class which consists of three integer values. Represents position on adventure map.
class int3
{
public:
si32 x,y,z;
inline int3():x(0),y(0),z(0){}; //c-tor, x/y/z initialized to 0
inline int3(const si32 & X, const si32 & Y, const si32 & Z):x(X),y(Y),z(Z){}; //c-tor
inline int3(const int3 & val) : x(val.x), y(val.y), z(val.z){} //copy c-tor
inline int3 operator=(const int3 & val) {x = val.x; y = val.y; z = val.z; return *this;} //assignemt operator
~int3() {} // d-tor - does nothing
inline int3 operator+(const int3 & i) const //returns int3 with coordinates increased by corresponding coordinate of given int3
{return int3(x+i.x,y+i.y,z+i.z);}
inline int3 operator+(const si32 i) const //returns int3 with coordinates increased by given numer
{return int3(x+i,y+i,z+i);}
inline int3 operator-(const int3 & i) const //returns int3 with coordinates decreased by corresponding coordinate of given int3
{return int3(x-i.x,y-i.y,z-i.z);}
inline int3 operator-(const si32 i) const //returns int3 with coordinates decreased by given numer
{return int3(x-i,y-i,z-i);}
inline int3 operator-() const //returns opposite position
{return int3(-x,-y,-z);}
inline double dist2d(const int3 other) const //distance (z coord is not used)
{return std::sqrt((double)(x-other.x)*(x-other.x) + (y-other.y)*(y-other.y));}
inline bool areNeighbours(const int3 other) const
{return dist2d(other) < 2. && z == other.z;}
inline void operator+=(const int3 & i)
{
x+=i.x;
y+=i.y;
z+=i.z;
}
inline void operator+=(const si32 & i)
{
x+=i;
y+=i;
z+=i;
}
inline void operator-=(const int3 & i)
{
x-=i.x;
y-=i.y;
z-=i.z;
}
inline void operator-=(const si32 & i)
{
x+=i;
y+=i;
z+=i;
}
inline bool operator==(const int3 & i) const
{return (x==i.x) && (y==i.y) && (z==i.z);}
inline bool operator!=(const int3 & i) const
{return !(*this==i);}
inline bool operator<(const int3 & i) const
{
if (z<i.z)
return true;
if (z>i.z)
return false;
if (y<i.y)
return true;
if (y>i.y)
return false;
if (x<i.x)
return true;
if (x>i.x)
return false;
return false;
}
template <typename Handler> void serialize(Handler &h, const int version)
{
h & x & y & z;
}
};
inline std::istream & operator>>(std::istream & str, int3 & dest)
{
str>>dest.x>>dest.y>>dest.z;
return str;
}
inline std::ostream & operator<<(std::ostream & str, const int3 & sth)
{
return str<<sth.x<<' '<<sth.y<<' '<<sth.z;
}
struct ShashInt3
{
size_t operator()(int3 const& pos) const
{
size_t ret = ::boost::hash<int>()(pos.x);
boost::hash_combine(ret, pos.y);
boost::hash_combine(ret, pos.z);
return ret;
}
};