#pragma once

#include <cstdint>
#include <functional>

struct Vector2Options
{
	int32_t x;
	int32_t y;
};

/**
 * A 2D Vector.
 */
class Vector2
{
public:
	explicit Vector2(const Vector2Options &options);

	[[nodiscard]] int32_t get_x() const noexcept;

	void set_x(int32_t x) noexcept;

	[[nodiscard]] int32_t get_y() const noexcept;

	void set_y(int32_t y) noexcept;

	const Vector2 &operator+=(const Vector2 &vector2) noexcept;
	const Vector2 &operator-=(const Vector2 &vector2) noexcept;

	bool operator==(const Vector2 &vector2) const noexcept;

	/**
	 *  Returns Vector2({.x = 0, .y = 1})
	 */
	static Vector2 up();

	/**
	 *  Returns Vector2({.x = 0, .y = -1})
	 */
	static Vector2 down();

	/**
	 *  Returns Vector2({.x = -1, .y = 0})
	 */
	static Vector2 left();

	/**
	 *  Returns Vector2({.x = 1, .y = 0})
	 */
	static Vector2 right();

private:
	int32_t _x;
	int32_t _y;
};

class Vector2Hasher
{
public:
	std::size_t operator()(const Vector2 &vector2) const;
};