#ifndef VECTOR2_H
#define VECTOR2_H


#if defined(_WIN32)
#  ifdef _GD_CPP_CORE_API_IMPL
#    define GD_CPP_CORE_API __declspec(dllexport)
#  else
#    define GD_CPP_CORE_API __declspec(dllimport)
#  endif
#else
#  define GD_CPP_CORE_API
#endif

#include <godot/godot_vector2.h>

#include "Defs.hpp"

namespace godot {

class String;

struct GD_CPP_CORE_API Vector2 {

	union {
		real_t x;
		real_t width;
	};
	union {
		real_t y;
		real_t height;
	};


	inline real_t& operator[](int p_idx) {
		return p_idx?y:x;
	}
	inline const real_t& operator[](int p_idx) const {
		return p_idx?y:x;
	}

	Vector2 operator+(const Vector2& p_v) const;

	void operator+=(const Vector2& p_v);

	Vector2 operator-(const Vector2& p_v) const;

	void operator-=(const Vector2& p_v);

	Vector2 operator*(const Vector2 &p_v1) const;

	Vector2 operator*(const real_t &rvalue) const;

	void operator*=(const real_t &rvalue);

	inline void operator*=(const Vector2 &rvalue) { *this = *this * rvalue; }

	Vector2 operator/(const Vector2 &p_v1) const;

	Vector2 operator/(const real_t &rvalue) const;

	void operator/=(const real_t &rvalue);

	Vector2 operator-() const;

	bool operator==(const Vector2& p_vec2) const;

	bool operator!=(const Vector2& p_vec2) const;

	inline bool operator<(const Vector2& p_vec2) const { return (x==p_vec2.x)?(y<p_vec2.y):(x<p_vec2.x); }
	inline bool operator<=(const Vector2& p_vec2) const { return (x==p_vec2.x)?(y<=p_vec2.y):(x<=p_vec2.x); }


	void normalize();

	Vector2 normalized() const;

	real_t length() const;
	real_t length_squared() const;

	real_t distance_to(const Vector2& p_vector2) const;
	real_t distance_squared_to(const Vector2& p_vector2) const;

	real_t angle_to(const Vector2& p_vector2) const;
	real_t angle_to_point(const Vector2& p_vector2) const;

	real_t dot(const Vector2& p_other) const;

	real_t cross(const Vector2& p_other) const;
	Vector2 cross(real_t p_other) const;

	Vector2 project(const Vector2& p_vec) const;

	Vector2 plane_project(real_t p_d, const Vector2& p_vec) const;

	Vector2 clamped(real_t p_len) const;

	static Vector2 linear_interpolate(const Vector2& p_a, const Vector2& p_b,real_t p_t);

	Vector2 linear_interpolate(const Vector2& p_b,real_t p_t) const;
	Vector2 cubic_interpolate(const Vector2& p_b,const Vector2& p_pre_a, const Vector2& p_post_b,real_t p_t) const;


	Vector2 slide(const Vector2& p_vec) const;

	Vector2 reflect(const Vector2& p_vec) const;

	real_t angle() const;

	void set_rotation(real_t p_radians);

	Vector2 abs() const;
	Vector2 rotated(real_t p_by) const;

	Vector2 tangent() const;

	Vector2 floor() const;

	Vector2 snapped(const Vector2& p_by) const;
	inline real_t aspect() const { return width/height; }


	operator String() const;

	inline Vector2(real_t p_x,real_t p_y) { x=p_x; y=p_y; }
	inline Vector2() { x=0; y=0; }
};


inline Vector2 operator*(real_t p_scalar, const Vector2& p_vec)
{
	return p_vec*p_scalar;
}



}

#endif // VECTOR2_H