if m != None:
t = (m.check_bullets(bl.get_centre()))
for i in t:
bl.erase(i)
sc.init_trash()
bg.update(sc)
bl.update(sc)
c.update(sc)
t = u.move()
if t != 0 and t != 1:
u.fall()
bl.new_bullet(t)
elif t == 0:
u.fall()
u.printer(sc)
sc.add(c.rem(u.get_centre()))
sc.set_nxt(0)
if m == None and sc.get_no() > sc.get_beams() / 2 and sc.get_timer() > 10 and sc.get_m_no() < 1:
m = Magnet()
sc.set_timer(0)
sc.set_m_no(1)
for i in range(len(b)):
if b[i].get_immersed() == 0 and (m == None or m.get_immersed()):
