// Daniel Shiffman

// http://natureofcode.com

​

// Evolution EcoSystem

​

// The World we live in

// Has bloops and food

​

// Constructor

class World {

  constructor(num) {

    // Start with initial food and creatures

    this.food = new Food(num);

    this.bloops = []; // An array for all creatures

    for (let i = 0; i < num; i++) {

      let l = createVector(random(width), random(height));

      let dna = new DNA();

      this.bloops.push(new Bloop(l, dna));

    }

  }

​

  // Make a new creature

  born(x, y) {

    let l = createVector(x, y);

    let dna = new DNA();

    this.bloops.push(new Bloop(l, dna));

  }

​

  // Run the world

  run() {

    // Deal with food

    this.food.run();

​

    // Cycle through the ArrayList backwards b/c we are deleting

    for (let i = this.bloops.length - 1; i >= 0; i--) {

      // All bloops run and eat

      let b = this.bloops[i];

      b.run();

      b.eat(this.food);

      // If it's dead, kill it and make food

      if (b.dead()) {

        this.bloops.splice(i, 1);

        this.food.add(b.position);

      }

      // Perhaps this bloop would like to make a baby?

      let child = b.reproduce();

      if (child != null) { this.bloops.push(child)};

    }

  }

}