#include "XY.h"

XY XY::operator - () const {
	return XY {
		.x = -x,
		.y = -y,
	};
}

XY XY::operator + (const XY & rhs) const {
	return XY {
		.x = x + rhs.x,
		.y = y + rhs.y,
	};
}

XY XY::operator - (const XY & rhs) const {
	return XY {
		.x = x - rhs.x,
		.y = y - rhs.y,
	};
}

XY& XY::operator += (const XY & rhs) {
	this->x += rhs.x;
	this->y += rhs.y;
	return *this;
}

XY& XY::operator -= (const XY & rhs) {
	this->x -= rhs.x;
	this->y -= rhs.y;
	return *this;
}

bool XY::operator == (const XY& rhs) const {
	if (this->x != rhs.x) return false;
	if (this->y != rhs.y) return false;
	return true;
}

bool XY::operator != (const XY& rhs) const {
	return !(*this == rhs);
}

size_t std::hash<XY>::operator () (const XY & instance) const {
	return instance.x | (instance.y << 16);
}