Untitled

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Ball : MonoBehaviour
{
    // Start is called before the first frame update
    private float xPosition = 0f;
    private float yPosition = 0f;

    private float xSpeed = 0f;
    private float ySpeed = 0f;

    // Limit the ball to the edges of the screen

    private float xMin = -10.0F;
    private float xMax = 10.0F;
    private float yMin = -5.0F;
    private float yMax = 5.0f;

    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        // 1. check if the ball has reached eges of screen
        if (xPosition < xMin || xPosition > xMax)
        {
            xSpeed = -xSpeed;
        }
        if (yPosition < yMin || yPosition > yMax)
        {
            ySpeed = -ySpeed;
        }
        // 2. update the position of the ball

    xPosition = xPosition + xSpeed;
    yPosition = yPosition + ySpeed;

    transform.position = new Vector2(xPosition, yPosition);
    }
}