const Bodies = Matter.Bodies;

const World = Matter.World;

​

let ground;

let boxes = [];

let world;

let engine;

​

function setup() {

  createCanvas(400, 400);

  engine = Engine.create();

  world = engine.world;

  // world.gravity.x = 1;

  // world.gravity.y = 0;

  ground = new Boundary(0, 380, 400, 20);

  box = new Box(300, 200, 10, 10);

  boxes.push(box);

}

​

function mousePressed() {

​

  box = new Box(mouseX, mouseY, 10, 10);

  boxes.push(box);

​

}

​

function draw() {

  background(0);

  Engine.update(engine);

  ground.show();

  for (let box of boxes) {

    box.show();

  }

}