Nature of code

noc_lab1_bouncingBall.js

var x;
var y = 1;
var xspeed, yspeed;
var gravity;
var mouseForce;
var randomSize;
var randomColor;

function setup() {
  createCanvas(500, 600);
  background(255);

  x = width / 2;
  y = height / 2;
  gravity = 3;
  //wallForce = 0.05;
  xspeed = 3;
  yspeed = 10;

  //yspeed = gravity*y;
}

function draw() {
  background(255);
  if (mouseIsPressed) {
    mouseForce = random(1, 10);
    randomSize= random(50,100);
    randomColor= random(0,255);
  } else {
    mouseForce = 0;
    randomSize=50;
    randomColor= 0;
  }
  if (y >= height || y <= 0) {
    yspeed = yspeed * -1;
  }

  if (x >= width || x <= 0) {
    xspeed = xspeed * -1;
  }
  yspeed = yspeed + gravity;
  //xspeed = xspeed + wallForce;

  x = x + xspeed + mouseForce;
  y = y + yspeed - mouseForce;

  if (y >= height) {
    y = height;
  }
  if (x >= width) {
    x = width;
  }

  noStroke();
  fill(random(randomColor,255),random(randomColor,255),255-randomColor,200);
  ellipse(x, y, randomSize, randomSize);
}