final version2

def timing():
    global g_direction
    global timeBegin
    global timeNow
    global moveTime
    if g_direction!=None:
        timeNow = time.time()
        moveTime=timeNow-timeBegin
    screen.ontimer(timing,500)





def title():#including contact&timer
    global contacting
    global caught
    global moveTime
    #turtle.title("Snake:   Contacted: %d   Time: %d"%(contact(),timing())
    turtle.title("Snake: Contact: %d  Time： %d" %(contacting,moveTime))
    if caught==True:
        return
    if len(head.stampItems)==50:
        return

    screen.ontimer(title,500)#speed=contact






def Game(m,n):
    global caught
    global timeBegin
    text.clear()
    setFood()
    screenControl()
    timeBegin=time.time()
    snakeMove()
    monsterMove()
    contact()
    timing()
    title()







if __name__ == "__main__":
    setWrite()
    setSnake()
    setMonster()
    screen.onclick(Game)
    screen.listen()
    screen.mainloop()