ungroup/ungroup_game

#ifndef VectorUtil_hpp
#define VectorUtil_hpp

#include <SFML/Graphics.hpp>
#include <array>
#include <memory>
#include <stdio.h>

namespace VectorUtil {
    const std::array<sf::Vector2f, 8> DIRECTIONS = {
        sf::Vector2f(0.f, -1.f),  // up
        sf::Vector2f(0.f, 1.f),   // down
        sf::Vector2f(-1.f, 0.f),  // left
        sf::Vector2f(1.f, 0.f),   // right
        sf::Vector2f(-1.f, -1.f), // left-up
        sf::Vector2f(1.f, 1.f),   // right-down
        sf::Vector2f(-1.f, 1.f),  // left-down
        sf::Vector2f(1.f, -1.f),  // right-up
    };
    sf::Vector2f normalize(const sf::Vector2f& source);
    float distance(const sf::Vector2f& point_a, const sf::Vector2f& point_b);
    float lengthSquared(const sf::Vector2f& point_a, const sf::Vector2f& point_b);
    sf::Vector2f getVector(const sf::Vector2f& point_a, const sf::Vector2f& point_b);
    float length(const sf::Vector2f& source);
    sf::Vector2f getMidpoint(const sf::Vector2f& point_a, const sf::Vector2f& point_b);
    sf::Vector2f lerp(const sf::Vector2f& a, const sf::Vector2f& b, float t);
    void print(const sf::Vector2f& v);
    float dot(const sf::Vector2f& a, const sf::Vector2f& b);
    double cos_sim(sf::Vector2f A, sf::Vector2f B);
    void clamp(sf::Vector2f& a, float min, float max);
    float clamp(float a, float min, float max);
    float angle(const sf::Vector2f& v);
    struct vector_comparator {
        bool operator()(sf::Vector2f lhs, sf::Vector2f rhs) const {
            return lhs.x + 10.f * lhs.y < rhs.x + 10.f * rhs.y;
        }
    };
    sf::Vector2f direction(float angle_degrees);
} // namespace VectorUtil

#endif /* VectorUtil_hpp */