repl.it
@ThomasS1/

Mastermind Basic

Python

An implementation of Knuth's mastermind algorithm https://en.wikipedia.org/wiki/Mastermind_(board_game)#Five-guess_algorithm

fork
loading
Files
  • main.py
  • archive
main.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
from os import system as s
from sys import stdout
from itertools import product
import webbrowser, time

#############
# VARIABLES #
#############

END = '\033[0m'

highlights = {
    "red": '\033[41m',
    "green": '\033[42m',
    "orange": '\033[43m',
    "blue": '\033[44m',
    "purple": '\033[45m',
    "cyan": '\033[46m',
    "white": '\033[47m',
    "grey": '\033[40m',
}

colours = {
    "red": '\033[91m',
    "green": '\033[92m',
    "yellow": '\033[93m',
    "blue": '\033[94m',
    "purple": '\033[95m',
    "cyan": '\033[96m',
    "grey": '\033[97m',
    "white": '\033[98m',
}

# answer: "0012"
examples = [
    "3545",
    "0435",
    "0002",
    "0021",
    "2011",
    "1134",
    "0012",
]


#############
# FUNCTIONS #
#############

def awards(guess, answer):
    ''' Calculates the number of black and white pegs awarded for a given `guess` and `answer`. Returns a list: `[black, white]` '''

    black = 0
    white = 0
    guess = list(guess)
    answer = list(answer)
    remainingGuess = guess[:] # the guessed colours that were not given a black peg
    remainingAnswer = answer[:] # the answer colours that were not correctly guessed

    for n in range(len(guess)):
        if answer[n] == guess[n]:
            black+=1
            remainingGuess.remove(guess[n])
            remainingAnswer.remove(answer[n])

    for colour in remainingGuess:
        if colour in remainingAnswer:
            white+=1
            remainingAnswer.remove(colour)

    return [black, white]

def printableGuess(guess):
    ''' Returns a printable version of a set of colours from a string of numbers. '''
    printable = ""
    for colour in guess:
        printable += f"{list(highlights.values())[int(colour)]}  {END}  "
    return printable


#########
# SETUP #
#########

s('clear')
print(f'''{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

An implementation of Knuth's mastermind algorithm in Python by @ThomasS1

How many colours do you want to play with? (3-8){colours["blue"]}''')

# Loops until valid answer
while True:
    try:
        nColours = int(input())
        if 8 >= nColours >= 3:
            break
        else:
            raise ValueError() # goes to except
    except:
        stdout.write("\033[{0};{1}f".format(7, 44))
        stdout.write(f'{colours["red"]}(3-8){END}')
        stdout.write("\033[{0};{1}f".format(8, 0))
        stdout.write("\033[K")
        stdout.write(colours["blue"])

stdout.write(f'''{END}
These are your {nColours} colours:
''')

print(printableGuess('01234567'[:nColours]))

print(f'''
How many spaces? (3-6){colours["blue"]}''')

# Loops until valid answer
while True:
    try:
        nSpaces = int(input())
        if 6 >= nSpaces >= 3:
            break
        else:
            raise ValueError() # goes to except
    except:
        stdout.write("\033[{0};{1}f".format(13, 18))
        stdout.write(f'{colours["red"]}(3-6){END}')
        stdout.write("\033[{0};{1}f".format(14, 0))
        stdout.write("\033[K")
        stdout.write(colours["blue"])

stdout.write(f'''{END}
Now write down a code with {nSpaces} of the colours.
You can use each of them once, more than once, or not at all.
If you don't have coloured pencils, assign them a number,
but make sure you know what it represents!
The order is important.
When you are finished, press enter.
''')

S = list(product('01234567'[:nColours], repeat=nSpaces))
fullS = S[:] # doesn't change

input() # waits until done


#########
# RULES #
#########

s('clear')

print(f'''{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

I am now going to give you a series of guesses of your code.
You must rate my guesses with the following system:
For every correct colour in the correct position, award me a black peg.
For every correct colour in the wrong position, award me a white peg.
If there are multiple of the same colour in my guess, 
only award me pegs for how many there are in the answer.

Confused? (Y/N){colours["blue"]}''')

# Loops until valid answer
while True:
    confused = input().upper()
    if not (confused == 'Y' or confused == 'N'):
        stdout.write("\033[{0};{1}f".format(12, 11))
        stdout.write(f'{colours["red"]}(Y/N){END}')
        stdout.write("\033[{0};{1}f".format(13, 0))
        stdout.write("\033[K")
        stdout.write(colours["blue"])
    else:
        break

while confused == 'Y':
    s('clear')
    print(f'''{END}{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

HELP PAGE

Read more detailed rules online  (type R)
Look at some examples            (type E)
Go back                          (type G)

Choose wisely, but don't worry - you can come back later (R/E/G){colours["blue"]}''')

    # Loops until valid answer
    while True:
        helpChoice = input().upper()
        if not (helpChoice in ['R', 'E', 'G']):
            stdout.write("\033[{0};{1}f".format(11, 58))
            stdout.write(f'{colours["red"]}(R/E/G){END}')
            stdout.write("\033[{0};{1}f".format(12, 0))
            stdout.write("\033[K")
            stdout.write(colours["blue"])
        else:
            break

    if helpChoice == 'R':
        if webbrowser.open("http://www.boardgamecapital.com/game_rules/mastermind.pdf") == False:
            s('clear')
            print(f'''{END}{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

Sorry - tried to open the rules automagically but failed.
You will have to manually copy this link into a new tab!
http://www.boardgamecapital.com/game_rules/mastermind.pdf

Press enter to return to the help page.''')

            input()


    elif helpChoice == 'E':
        answer = '0012'

        s('clear')
        print(f'''{END}{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

These examples are for 6 colours and 4 spaces,
but the same rules always apply.
They tell you the number of white and black pegs that would
be awarded for the given guess if this were the answer code:

Answer: '''+printableGuess(answer))

        for guess in examples:
            print('\nGuess:  '+printableGuess(guess))
            black, white = awards(guess, answer)
            print('Black:  '+str(black))
            print('White:  '+str(white))

        print('''
Press enter to return to the help page.''')

        input()

    else:
        confused = 'N'

s('clear')
print(f'''{END}{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

Remember to follow the rules when scoring my guesses.
If you don't, the algorithm won't work!

Press enter when ready to continue.''')

input()


########
# GAME #
########

go = 0
playing = True
guess = '001122'[:nSpaces]

while playing:

    s('clear')
    print(f'''{END}{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

Current number of possibilities: {len(S)}

Guess {go+1}:  ''', end='')
    print(printableGuess(guess))


    # Gets number of black pegs
    print(f'''
How many black pegs? (0-{nSpaces}){colours["blue"]}''')
    while True:
        try:
            awardedBlack = int(input())
            if nSpaces >= awardedBlack >= 0:
                break
            else:
                raise ValueError() # goes to except
        except:
            stdout.write("\033[{0};{1}f".format(9, 22))
            stdout.write(f'{colours["red"]}(0-{nSpaces}){END}')
            stdout.write("\033[{0};{1}f".format(10, 0))
            stdout.write("\033[K")
            stdout.write(colours["blue"])

    if awardedBlack == nSpaces:
        break

    # Gets number of white pegs
    print(f'''{END}
How many white pegs? (0-{nSpaces}){colours["blue"]}''')

    while True:
        try:
            awardedWhite = int(input())
            if nSpaces >= awardedWhite >= 0:
                break
            else:
                raise ValueError() # goes to except
        except:
            stdout.write("\033[{0};{1}f".format(11, 22))
            stdout.write(f'{colours["red"]}(0-{nSpaces}){END}')
            stdout.write("\033[{0};{1}f".format(12, 0))
            stdout.write("\033[K")
            stdout.write(colours["blue"])


    # Eliminates all possibles that would not award the same result if they were the answer
    passed = []
    for pos in S:
        if awards(guess, pos) == [awardedBlack, awardedWhite]:
            passed.append(pos)
    S = passed[:]

    guess = S[0]


    # End if no possibilities left
    if len(S) == 0:
        s('clear')
        print(f'''{END}{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

Current number of possibilities: {colours["red"]}0{END}

Oh dear, there aren't any possibilities left!
Not meaning to be cocky, but you must have gone wrong!
Please restart the program to try again.''')
        quit()

    # End if only one possibility left
    if len(S) == 1:
        s('clear')
        print(f'''{END}{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

Current number of possibilities: {colours["green"]}1{END}

Answer:  {printableGuess(S[0])}

Correct? (Y/N)''')
        while True:
            try:
                correct = input().upper()
                if correct == 'Y' or correct == 'N':
                    break
                else:
                    raise ValueError() # goes to except
            except:
                stdout.write("\033[{0};{1}f".format(9, 10))
                stdout.write(f'{colours["red"]}(Y/N){END}')
                stdout.write("\033[{0};{1}f".format(10, 0))
                stdout.write("\033[K")
                stdout.write(colours["blue"])

        if correct == 'N':
            s('clear')
            print(f'''{END}{highlights["red"]}                         
  WELCOME TO MASTERMIND  
                         {END}

DOH! Sorry to disappoint...
If you're sure you entered all the right black/white peg numbers,
send a comment [here], giving the number of colours and spaces
as well as the answer code, and I'll look into it. Thanks!''')
        else:
            break
            
        quit()
    
    go+=1


#############
# POST-GAME #
#############
?