# Mini-project #6 - Blackjack
# by Sean
import simplegui
import random
# load card sprite - 949x392 - source: jfitz.com
CARD_SIZE = (73, 98)
CARD_CENTER = (36.5, 49)
card_images = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/cards.jfitz.png")
CARD_BACK_SIZE = (71, 96)
CARD_BACK_CENTER = (35.5, 48)
card_back = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/card_back.png")
# initialize some useful global variables
in_play = False
outcome = ""
score = 0
# define globals for cards
SUITS = ('C', 'S', 'H', 'D')
RANKS = ('A', '2', '3', '4', '5', '6', '7', '8', '9', 'T', 'J', 'Q', 'K')
VALUES = {'A':1, '2':2, '3':3, '4':4, '5':5, '6':6, '7':7, '8':8, '9':9, 'T':10, 'J':10, 'Q':10, 'K':10}
# define card class
class Card:
def __init__(self, suit, rank):
if (suit in SUITS) and (rank in RANKS):
self.suit = suit
self.rank = rank
else:
self.suit = None
self.rank = None
print "Invalid card: ", suit, rank
def __str__(self):
return self.suit + self.rank
def get_suit(self):
return self.suit
def get_rank(self):
return self.rank
def draw(self, canvas, pos):
card_loc = (CARD_CENTER[0] + CARD_SIZE[0] * RANKS.index(self.rank),
CARD_CENTER[1] + CARD_SIZE[1] * SUITS.index(self.suit))
canvas.draw_image(card_images, card_loc, CARD_SIZE, [pos[0] + CARD_CENTER[0], pos[1] + CARD_CENTER[1]], CARD_SIZE)
# define hand class
class Hand:
def __init__(self):
self.hand = []
hand_value = 0
def __str__(self):
return str(self.hand)
def hit(self, card):
self.hand.append(card)
# count aces as 1, if the hand has an ace, then add 10 to hand value if it doesn't bust
def get_value(self):
self.hand_value = sum([VALUES[card.get_rank()] for card in self.hand])
if 'A' not in [card.get_rank() for card in self.hand]:
return self.hand_value
else:
if self.hand_value + 10 <= 21:
return self.hand_value + 10
else:
return self.hand_value
def busted(self):
return not self.get_value() <= 21
def draw(self, canvas, p):
space = 100
for i in range(len(self.hand)):
self.hand[i].draw(canvas, [p[0] + space * i, p[1]])
if in_play:
if p[1] == 175:
canvas.draw_image(card_back, CARD_BACK_CENTER, CARD_BACK_SIZE, [p[0] + CARD_CENTER[0], p[1] + CARD_CENTER[1]], CARD_SIZE)
# define deck class
class Deck:
def __init__(self):
self.deck = [Card(suit, rank) for suit in SUITS for rank in RANKS]
# add cards back to deck and shuffle
def shuffle(self):
random.shuffle(self.deck)
def deal_card(self):
return self.deck.pop()
#define event handlers for buttons
def deal():
global outcome, in_play, deck, dealer, player
outcome = ""
deck = Deck()
dealer = Hand()
player = Hand()
deck.shuffle()
for i in range(0, 2):
dealer.hit(deck.deal_card())
player.hit(deck.deal_card())
in_play = True
def hit():
global outcome, in_play, score
if in_play:
if not player.busted():
player.hit(deck.deal_card())
if player.get_value() > 21:
outcome = "You have busted and lose."
in_play = False
score -= 1
def stand():
# if hand is in play, repeatedly hit dealer until his hand has value 17 or more
global outcome, in_play, dealer, score
if in_play:
while dealer.get_value() < 17:
dealer.hit(deck.deal_card())
if dealer.get_value() > 21 or dealer.get_value() < player.get_value():
outcome = "You win!"
score += 1
else:
outcome = "You lose."
score -= 1
in_play = False
# draw handler
def draw(canvas):
# test to make sure that card.draw works, replace with your code below
canvas.draw_text("Blackjack", [120, 90], 35, "Aqua")
canvas.draw_text("Dealer", [100, 150], 25, "Black")
canvas.draw_text("Player", [100, 350], 25, "Black")
canvas.draw_text(outcome, [250, 150], 20, "Black")
if in_play:
canvas.draw_text("Hit or stand?", [250, 350], 20, "Black")
else:
canvas.draw_text("New deal?", [250, 350], 20, "Black")
canvas.draw_text("Score " + str(score), [400, 90], 20, "Black")
dealer.draw(canvas, [100, 175])
player.draw(canvas, [100, 375])
# initialization frame
frame = simplegui.create_frame("Blackjack", 600, 600)
frame.set_canvas_background("Green")
#create buttons and canvas callback
frame.add_button("Deal", deal, 200)
frame.add_button("Hit", hit, 200)
frame.add_button("Stand", stand, 200)
frame.set_draw_handler(draw)
# deal an initial hand
deal()
# get things rolling
frame.start()
