#include "vector2.hpp"

#include "util/hash.hpp"

auto Vector2::get_x() const noexcept -> Vector2::Value
{
	return _x;
}

void Vector2::set_x(Vector2::Value x) noexcept
{
	_x = x;
}

auto Vector2::get_y() const noexcept -> Vector2::Value
{
	return _y;
}

void Vector2::set_y(Vector2::Value y) noexcept
{
	_y = y;
}

auto Vector2::to_direction(const Vector2 &direction, Vector2::Value amount) const noexcept
	-> Vector2
{
	return *this + (direction * Vector2({ .x = amount, .y = amount }));
}

auto Vector2::operator+=(const Vector2 &rhs) noexcept -> const Vector2 &
{
	_x += rhs._x;
	_y += rhs._y;

	return *this;
}

auto Vector2::operator-=(const Vector2 &rhs) noexcept -> const Vector2 &
{
	_x -= rhs._x;
	_y -= rhs._y;

	return *this;
}

auto Vector2::operator+(const Vector2 &rhs) const noexcept -> Vector2
{
	auto new_vector2 = Vector2(*this);

	new_vector2._x += rhs._x;
	new_vector2._y += rhs._y;

	return new_vector2;
}

auto Vector2::operator-(const Vector2 &rhs) const noexcept -> Vector2
{
	auto new_vector2 = Vector2(*this);

	new_vector2._x -= rhs._x;
	new_vector2._y -= rhs._y;

	return new_vector2;
}

auto Vector2::operator*(const Vector2 &rhs) const noexcept -> Vector2
{
	auto new_vector2 = *this;

	new_vector2._x *= rhs._x;
	new_vector2._y *= rhs._y;

	return new_vector2;
}

auto Vector2::operator==(const Vector2 &rhs) const noexcept -> bool
{
	return _x == rhs._x && _y == rhs._y;
}

auto Vector2Hasher::operator()(const Vector2 &vector2) const noexcept -> std::size_t
{
	std::size_t result_hash = 0;

	hash_combine(result_hash, vector2.get_x());
	hash_combine(result_hash, vector2.get_y());

	return result_hash;
}