class Event:
  pass
def EventCreate(etime,etype,eparm1,eparm2,eparm3,eparm4):
  ev = Event()
  ev.time = etime
  ev.type = etype
  ev.p1 = eparm1
  ev.p2 = eparm2
  ev.p3 = eparm3
  ev.p4 = eparm4
  return ev
def EventToString(ev):
  return "[" + str(ev.time) + "," + str(ev.type) + "," + \
               str(ev.p1) + "," + str(ev.p2) + "," + str(ev.p3) + "]"
currentTime = 0
def tick():
  global currentTime
  currentTime = currentTime + 1
eventlist = []
def PrintEvents():
  for e in eventlist:
    print EventToString(e)
def AddEvent(newEvent):
  if len(eventlist) == 0:
    eventlist.append(newEvent)
  else:
    time = newEvent.time
    for i in range(len(eventlist)):
      checkevent = eventlist[i]
      if time < checkevent.time:
        eventlist.insert(i,newEvent)
        return
    eventlist.append(newEvent)
def NextEvent():
    global currentTime
    if len(eventlist) == 0:
      return None
    event = eventlist[0]
    if currentTime == event.time:
      del eventlist[0]
      return event
    else:
      return None