'''
  File: apr10.py

  Author: Jeff Kinne

  Contents: What I plan to do in class today.  I prepared this file before 
  class, and will save the actual file we did in class after class.
'''

# Plan - work on project for about half the class.

# Then - put try/except into maze game so if they try to load game that
#        does not exist, will not crash.  Also, give them choice of what
#        to call the saved game, maybe where to store it.

# Note: HW8 due Thursday.

# Next up if we get to it - doing a simple search engine.  We'll store
# information about all the files on the in-class website and make it so we
# can search through them.


# Note...
# import os
# print os.getcwd()
# print os.listdir(os.getcwd())

def printWorld(aMap,currRow,currCol):
    print '\nThe map looks like this.'
    for row in aMap:
        s = ''.join(row)
        print s
        
import random, pickle

def mazeGame():
    worldMap = '''
****************************
*******          ***********
******* ******** ***********
*$                         *
****** ************** ******
******      M        @******
****************************'''

    mapList = worldMap[1:].split('\n')

    myMap = []
    for row in mapList:
        myMap.append(list(row))

    currRow = 3
    currCol = 1

    while True:
        printWorld(myMap,currRow,currCol)
        choice = raw_input('Which direction to go?\n'+ \
                           '  (n, s, e, w, or q to quit, v to saVe, l to Load) ')

        nextRow = currRow
        nextCol = currCol
        if choice == 'n':
            nextRow = currRow - 1
            nextCol = currCol
        elif choice == 's':
            nextRow = currRow + 1
            nextCol = currCol
        elif choice == 'e':
            nextRow = currRow 
            nextCol = currCol + 1
        elif choice == 'w':
            nextRow = currRow 
            nextCol = currCol - 1
        elif choice == 'q':
            print 'Quittting...'
            break
        elif choice == 'v':
            print 'Saving the game...'
            s = pickle.dumps([myMap,currRow,currCol])

            f = open('saveGame.txt','w')
            f.write(s)
            f.close()
        elif choice == 'l':
            print 'Loading saved game...'

            try:
                # get string from file.
                f = open('saveGame.txt')
                s = f.read()
                f.close()

                # convert string back to lists and stuff
                L = pickle.loads(s)

                # save it back into our variables.
                myMap = L[0]
                currRow = L[1]
                currCol = L[2]
                nextRow = currRow
                nextCol = currCol
            except IOError:
                print 'Could not load.  No file.'

                
        else:
            print 'Not a valid choice.  Try again.  '

        if myMap[nextRow][nextCol] == '*':
            print 'You ran into a wall.  Stop it.  Try again. '
        elif myMap[nextRow][nextCol] in [' ','.'] :
            print 'Moving you...'
            myMap[currRow][currCol] = '.'
            myMap[nextRow][nextCol] = '$'
            currRow = nextRow
            currCol = nextCol
        elif myMap[nextRow][nextCol] == '@':
            print 'You win fabulous prizes and glory.'
            break
        
        elif myMap[nextRow][nextCol] == 'M':
            # monster, coin flip decides who wins.
            if random.randint(0,10) == 0:
                # move into the space, we win.
                print 'monster vanquished.'
                myMap[currRow][currCol] = '.'
                myMap[nextRow][nextCol] = '$'
                currRow = nextRow
                currCol = nextCol
            else:
                print 'sorry, the monster bested you this time..'