# An emitter simply emits particles at a regular interval. In this case, every
# time spawn is called, a new particle is generated with a random angle of movement and speed.
class Emitter  
  def initialize(particles)
    @particles = particles
  end
  
  def spawn (x, y)
    @particles.create(x, y, rand * 360, (rand * 3)+3)
  end

  def draw
    @particles.draw
  end

  def update
    @particles.update
  end
end