// Daniel Shiffman <http://www.shiffman.net>

// The Nature of Code

​

// A World of creatures that eat food

// The more they eat, the longer they survive

// The longer they survive, the more likely they are to reproduce

// The bigger they are, the easier it is to land on food

// The bigger they are, the slower they are to find food

// When the creatures die, food is left behind

​

​

let world;

​

function setup() {

  createCanvas(640, 360);

  // World starts with 20 creatures

  // and 20 pieces of food

  world = new World(20);

}

​

function draw() {

  background(175);

  world.run();

}

​

// We can add a creature manually if we so desire

function mousePressed() {

  world.born(mouseX, mouseY);

}

​

function mouseDragged() {

  world.born(mouseX, mouseY);

}