let x = 100;
let y = 200;
let s = 30;
let speedX = 1.5;
let speedY = 2;
function setup() {
createCanvas(400, 400);
noStroke();
}
function draw() {
background(0, 30);
x = x + speedX;
if (x > width || x < 0) {
speedX = speedX * -1;
}
y = y + speedY;
if (y > width || y < 0) {
speedY = speedY * -1;
}
ellipse(x, y, s, s);
}