84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
#ifndef _VECTOR2_H_
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#define _VECTOR2_H_
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#include "mathtypes.h"
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struct uvector2;
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struct vector2
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{
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vector2() : x (0), y (0) {}
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vector2( coord_t _x, coord_t _y )
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: x(_x)
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, y(_y)
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{}
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coord_t x;
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coord_t y;
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inline vector2 operator-() const { return { (coord_t)-x, (coord_t)-y }; }
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inline operator uvector2() const;
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// vec
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inline vector2 operator+(const vector2& rhs) const { return { (coord_t)(rhs.x + x) , (coord_t)(rhs.y + y) }; }
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inline vector2 operator-(const vector2& rhs) const { return *this + (-rhs); }
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inline const vector2& operator+=(const vector2& rhs) { *this = *this+rhs; return *this; }
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inline const vector2& operator-=(const vector2& rhs) { return *this+=(-rhs); }
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inline bool operator==(const vector2& rhs) const { return ( rhs.x == x) && ( rhs.y == y); }
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inline bool operator!=(const vector2& rhs) const { return !(*this==rhs); }
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};
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struct uvector2
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{
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uvector2() : x (0), y (0) {}
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uvector2( ucoord_t _x, ucoord_t _y )
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: x(_x)
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, y(_y)
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{}
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ucoord_t x;
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ucoord_t y;
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// Implicit conversion to vector 2 if needed
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inline operator vector2() const { return { (coord_t)x, (coord_t)y }; }
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inline uvector2 operator-() const { return { (ucoord_t)-x, (ucoord_t)-y }; }
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// uvec
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inline uvector2 operator+(const uvector2& rhs) const { return { (ucoord_t)(rhs.x + x) , (ucoord_t)(rhs.y + y) }; }
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inline uvector2 operator-(const uvector2& rhs) const { return *this + (-rhs); }
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inline const uvector2& operator+=(const uvector2& rhs) { *this = *this+rhs; return *this; }
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inline const uvector2& operator-=(const uvector2& rhs) { return *this+=(-rhs); }
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inline bool operator==(const uvector2& rhs) const { return ( rhs.x == x) && ( rhs.y == y); }
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inline bool operator!=(const uvector2& rhs) const { return !(*this==rhs); }
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};
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inline vector2::operator uvector2() const { return { (ucoord_t)x, (ucoord_t)y }; }
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inline vector2 vecFromDir( dir_t dir )
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{
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switch( dir )
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{
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case dir_t::N:
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return { 0,1 };
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case dir_t::E:
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return { 1,0 };
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case dir_t::S:
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return { 0,-1 };
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case dir_t::W:
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return { -1,0 };
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default:
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return { 0,0 };
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}
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}
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#endif //_VECTOR2_H_
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