Physic.h

#pragma once
#include "stdafx.h"

class Collision
{
private:
    RectangleShape dynamic_shape;
    RectangleShape static_shape;
    float G = 9.8f;
    RenderWindow* window;

public:

    Collision(RenderWindow* window)
    {
        this->window = window;

        static_shape.setSize(Vector2f(20, 30));
        static_shape.setPosition(Vector2f(230, 250));
        static_shape.setFillColor(Color(232, 34, 38, 255));

        dynamic_shape.setSize(static_shape.getSize());
        dynamic_shape.setPosition(static_shape.getPosition() - Vector2f(0, 100));
        dynamic_shape.setFillColor(Color(22, 33, 32, 255));

    }

    void draw()
    {
        this->window->draw(this->static_shape);
        this->window->draw(this->dynamic_shape);
    }

    float distance()
    {
        Vector2f a = static_shape.getPosition() - dynamic_shape.getPosition();

        return sqrt((a.x*a.x) - (a.y*a.y));
    }

    void update_physic()
    {

        if (distance() > Vector2f(dynamic_shape.getSize()).x)
            dynamic_shape.move(0, G);
    }
};