​

​

// Declare a variable for the horizontal position of the ball

let x;

let y;

​

// Declare a variable for the horizontal speed of the ball

let xspeed = 1;

let yspeed = 1.2;

​

function setup() {

  createCanvas(400, 400);

  // Initialize the position in the center

  x = width / 2;

  y = height/2;

}

​

function draw() {

  background(220);

​

  // Move the ball ball, either right or left

  x += xspeed;

  y += yspeed;

  for (let b = 0; b<100; b++){

    x[b] +=xspeed[b]'

    y[b]'

  }

//   // Simplified Version:

//   // When the ball is at either left or right border

//   if (x <= 0 || x >= width) {

//     // Flip the sign of the direction

//     xspeed *= -1;

//   }

//   if (y <= 0 || y >= height) {

//     // Flip the sign of the direction

//     yspeed *= -1;

//   }

​

  // Draw the ball

  ellipse(x, y, 50, 50);

}

​