Ball_Clean

import java.util.Random;

import javafx.scene.shape.Circle;

public class Ball {
    //equation of the circle: r^2 = (x-h)^2 + (y-h)^2
    double h = randomSpawnX();
    double k = 0;
    double radius = 15;
    double velocityOld[] = new double[2];
    double posOld[] = new double[2]; //h will be pos[0] and k will be pos[1]
    double posNew[] = new double[2]; //h will be pos[0] and k will be pos[1]
    double accel = 9.81;



    public Ball() {
        velocityOld[0] = 0;
        velocityOld[1] = 0; //so that the ball doesn't fall too fast in the beginning
        posOld[0] = h;
        posOld[1] = k;
    }










    //***** C A L C U L A T I O N    M E T H O D S *****//

    //get the next X position
    public double getNextCenterX(double deltaT) {
        double answer;
        double Vnew;
        posOld[0] =

        Vnew = accel*deltaT+velocityOld[0];
        answer = 1/2*(accel*deltaT*deltaT)+Vnew*deltaT+posOld[0];

        posNew[0] = answer;
        return posNew[0];

    }

    //get the next Y position
    public double getNextCenterY(double deltaT) {
        double answer;
        double Vnew;
        posOld[1] =

        Vnew = accel*deltaT+velocityOld[1];
        answer = 1/2*(accel*deltaT*deltaT)+Vnew*deltaT+posOld[1];

        posNew[1] = answer;
        return posNew[1];
    }

    //make posNew into posOld
    public void updatePos() {
        posOld[0]=posNew[0];
        posOld[1]=posNew[1];
    }















    //generate random numbers
    //algorithm from: https://stackoverflow.com/questions/3680637/generate-a-random-double-in-a-range
    //this method gets a random position for the X center of the circle
    public double randomSpawnX() {
        double start = 0;
        double end = 400;
        double random = new Random().nextDouble();
        double result = start + (random * (end - start));
        return result;
    }
    //this method gets a random velocity for the
    public double randomVelocity() {
        double start = 0;
        double end = 5;
        double random = new Random().nextDouble();
        double result = start + (random * (end - start));
        return result;
    }










}