Coding the Ball class
To get started, we will code the header file. Right-click on Header Files in the Solution Explorer window and select ADD | New Item. Next, choose the Header File (.h) option and name the new file Ball.h. Click the Add button. Now, we are ready to code the file.
Add the following code to Ball.h:
#pragma once
#include <SFML/Graphics.hpp>
using namespace sf;
class Ball
{
private:
    Vector2f m_Position;   Â
    RectangleShape m_Shape;
    float m_Speed = 300.0f;
    float m_DirectionX = .2f;
    float m_DirectionY = .2f;
public:
    Ball(float startX, float startY);
    FloatRect getPosition();
    RectangleShape getShape();
    float getXVelocity();
    void reboundSides();
    void reboundBatOrTop();
   ...