Problem Set 4b

from ps4a import *
import time


#
#
# Problem #6: Computer chooses a word
#
#
def compChooseWord(hand, wordList):
    """
    Given a hand and a wordList, find the word that gives
    the maximum value score, and return it.

    This word should be calculated by considering all the words
    in the wordList.

    If no words in the wordList can be made from the hand, return None.

    hand: dictionary (string -> int)
    wordList: list (string)
    returns: string or None
    """
    MaxScore=0
    BestWord=None
    Score=0
    for eachWord in wordList:
        if isValidWord(eachWord, hand, wordList):
            Score=getWordScore(eachWord,HAND_SIZE)
            if MaxScore<Score:
                MaxScore=Score
                BestWord=eachWord
                Score=0
    return BestWord

#
# Problem #7: Computer plays a hand
#
def compPlayHand(hand, wordList, n):
    """
    Allows the computer to play the given hand, following the same procedure
    as playHand, except instead of the user choosing a word, the computer
    chooses it.

    1) The hand is displayed.
    2) The computer chooses a word.
    3) After every valid word: the word and the score for that word is
    displayed, the remaining letters in the hand are displayed, and the
    computer chooses another word.
    4)  The sum of the word scores is displayed when the hand finishes.
    5)  The hand finishes when the computer has exhausted its possible
    choices (i.e. compChooseWord returns None).

    hand: dictionary (string -> int)
    wordList: list (string)
    """
    total=0
    while calculateHandlen(hand)>0:
        print ('Current Hand: ',end=" ")
        displayHand(hand)
        word=compChooseWord(hand, wordList)
        if word!=None:
            total+=getWordScore(word, n)
            print (word,'earned', getWordScore(word, n), 'points. Total: ', total, 'points')
        elif word==None or calculateHandlen(hand)<1:
            break
        hand=updateHand(hand, word)
    print ('Total score: ', total, 'points.')


#
# Problem #8: Playing a game
#
#
def playGame(wordList,n):
    """
    Allow the user to play an arbitrary number of hands.

    1) Asks the user to input 'n' or 'r' or 'e'.
        * If the user inputs 'e', immediately exit the game.
        * If the user inputs anything that's not 'n', 'r', or 'e', keep asking them again.

    2) Asks the user to input a 'u' or a 'c'.
        * If the user inputs anything that's not 'c' or 'u', keep asking them again.

    3) Switch functionality based on the above choices:
        * If the user inputted 'n', play a new (random) hand.
        * Else, if the user inputted 'r', play the last hand again.

        * If the user inputted 'u', let the user play the game
          with the selected hand, using playHand.
        * If the user inputted 'c', let the computer play the
          game with the selected hand, using compPlayHand.

    4) After the computer or user has played the hand, repeat from step 1

    wordList: list (string)
    """
    isGameRunning = True
    hand = {}

    while isGameRunning == True:
        inp = input('Enter n to deal a new hand, r to replay the last hand, or e to end game: ')

        if inp == 'n':
            hand = dealHand(n)
            while True:
                inp = input('Enter c to give this hand to a computer or u to play by yourself: ')
                if inp == 'u':
                    playHand(hand.copy(), wordList, n)
                    break
                elif inp == 'c':
                    compPlayHand(hand.copy(), wordList, n)
                    break
                else:
                    print ('Invalid command.')
                    print
        elif inp == 'r':
            if hand != {}:
                while True:
                    inp = input('Enter c to give this hand to a computer or u to play by yourself: ')
                    if inp == 'u':
                        playHand(hand.copy(), wordList, n)
                        break
                    elif inp == 'c':
                        compPlayHand(hand.copy(), wordList, n)
                        break
                    else:
                        print ('Invalid command.')
                        print
            else:
                print ('No hand have been played yet. Please play a new hand first!')
                print
        elif inp == 'e':
            isGameRunning = False
        else:
            print ('Invalid command.')


##
## Build data structures used for entire session and play game
##
if __name__ == '__main__':
    print ("Waring! This code tested in Python 3.3 (not in Python 2.7)"
    wordList = loadWords()
    playGame(wordList, HAND_SIZE)