def populate(n):
global bang_force
#I support the big bang theory.
particles = []
for i in range(n):
pos = vec2d((randrange(0,501)*1.00),(randrange(0,501)*1.00))
dir_to_center = vec2d((pos.x-250), (pos.y-250)).normalized()
bang_dir = dir_to_center * bang_force
particle = Particle(pos)
particle.addVec(bang_dir)
particles.append(particle)
particle = None
return particles
