Mini-project # 2 - "Guess the number" game"

第三周的作业，大致就是两个给定的上下界，在其中随机一个数，让用的人输入猜的数字，告知他实际的数字比猜的大还是小，一共有[log(upper) / log(2)]次机会，策略是二分。

这次是带界面的，库是老师写的simplegui，在下面的链接里（科学上网）

现在完成了第一部分。输出还是在控制台而不是在画布。。

http://www.codeskulptor.org

思路大致是这样：

　　用全局变量存上下界，通过按钮的动作给出。每次一开始调用newgame做各种预处理，随机出给定的数，计算剩余剩余猜的次数等等。每次按按钮也要记得调用newgame

　　打分的时候发现有人一开始没调用。。貌似是不行的吧？

　　接下来输入的时候获取输入值判断什么的。。次数没了要重新开始。

　　用了try防止不合法输入。。自己玩起来还没有什么问题。除了不太方便。。。。。= =

体会是：

　　python的全局变量。。。是要在函数里声明的。。

　　开发貌似很练码力。。。。。。。。。。。。。。。。。。。。。。。。。。。。。

 1 # template for "Guess the number" mini-project
 2 # input will come from buttons and an input field
 3 # all output for the game will be printed in the console
 4
 5 import simplegui
 6 import random
 7 import math
 8 guess_num = 0
 9 secret_number = 0
10
11 upper = 100
12 remain_chance = 7
13
14 # helper function to start and restart the game
15 def new_game():
16     # initialize global variables used in your code here
17     global secret_number, remain_chance
18     # remove this when you add your code
19     secret_number = random.randrange(0, upper)
20     remain_chance = int(math.ceil(math.log(upper)/math.log(2)))
21     print "New game start:","Range is [0,", upper,")"
22     print "Number of remaining guesses is", remain_chance
23
24 # define event handlers for control panel
25 def range100():
26     # button that changes the range to [0,100) and starts a new game
27     global upper, remain_chance
28     # remove this when you add your code
29     upper = 100
30     remain_chance = 7
31     new_game()
32
33 def range1000():
34     # button that changes the range to [0,1000) and starts a new game
35     global upper
36     remain_chance = 10
37     upper = 1000
38     new_game()
39
40
41 def input_guess(guess):
42     # main game logic goes here
43     global guess_num, remain_chance
44     # remove this when you add your code
45     try:
46         guess_num = int(guess)
47     except:
48         print "an integer please"
49         return
50     print "Guess was", guess
51     remain_chance -= 1
52     print "Number of remaining guesses is", remain_chance
53     #judge
54     if guess_num == secret_number:
55         print "Correct"
56         new_game()
57         return
58     elif guess_num > secret_number: print "Lower"
59     elif guess_num < secret_number: print "Higher"
60
61     #if run out of chance
62
63     if remain_chance == 0:
64         print "You ran out of chances"
65         new_game()
66
67
68 # call new_game
69 new_game()
70
71
72 # create frame
73 f = simplegui.create_frame("Guess", 200, 200)
74
75
76 # register event handlers for control elements and start frame
77 input_guess = f.add_input("enter what you guess", input_guess, 100)
78 reset = f.add_button("reset", new_game)
79 Range_100 = f.add_button("Range is [0,100)", range100)
80 Range_1000 = f.add_button("Range is [0,1000)", range1000)
81 f.start()
82
83 # always remember to check your completed program against the grading rubric