// Simple Particle System
// Daniel Shiffman <http://www.shiffman.net>

// A class to describe a group of Particles
// An ArrayList is used to manage the list of Particles

class BoidSystem {

  ArrayList boids;    // An arraylist for all the particles
  Vector3D origin;        // An origin point for where particles are birthed

  BoidSystem(int num, Vector3D v) {
    boids = new ArrayList();              // Initialize the arraylist
    origin = v.copy();                        // Store the origin point
    // Add an initial group of particles to the ArrayList
    for (int i = 0; i < num; i++) {
      if (random(1) > 0.5) {
        boids.add(new Female(new Vector3D(width - width/4,height - height/4),2.0f,0.05f,random(10,15)));
      } 
      else {
        // There is a 50% chance we will add a "crazy particle" into the system
        boids.add(new Male(new Vector3D(width/4,height/4),2.0f,0.05f,random(10,15)));
      }
    }
  }

  void run() {
    for (int i = 0; i < boids.size(); i++) {
      Boid b = (Boid) boids.get(i);  
      b.run(boids);  // Passing the entire list of boids to each boid individually
    }
  }
  
}