fonzai

require 'gosu'
$width, $height = 200, 200
$number_of_particles = 200

class Quad
  def initialize
    @pos = {x:rand($width), y:rand($width)}
    @vel = { x:(rand(5)+1)*[1,-1].sample, y:(rand(5)+1)*[1,-1].sample }
    @size = rand(4)*[1,-1].sample
    @color = [  Gosu::Color::GRAY, Gosu::Color::WHITE,