Intro to matter.js

let body;  // will refer to a physics body (a circle, with a mass, radius, position, velocity, etc)

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  let engine = Matter.Engine.create(); //The physics engine!

  Matter.Runner.run(engine);

​

  body = Matter.Bodies.circle(width / 2, 0, 100); //x, y, radius

  Matter.Composite.add(engine.world, body);  //add our body to the world for simulation

}

​

function draw() {

  background(60);

  circle(body.position.x, body.position.y, 200); //x, y, diam

}