def new_ai(self, diff):
# For now, just start an AI game and store it in session,
# which is what we'll end up doing for AI games pre-save.
# We'll be hitting the database on versus game starts though,
# or if the user decides to 'save' an AI game.
# Only supporting same-sized edged boards for now
board_size = 3
x_pos_bin = '000000000'
o_pos_bin = '000000000'
x_pos = 0
o_pos = 0
finished = False
message = ''
# AI difficulty from 0..2, with 0 being least difficult
if diff == 'easy':
ai_level = 0
elif diff == 'med':
ai_level = 1
elif diff == 'hard':
ai_level = 2
else:
return redirect('/game/new/ai/')
# An option to clear the session's game cache for a fresh start
if 'reset' in request.POST and request.POST['reset'] == 'true':
session.clear()
session.save()
return redirect('/game/new/ai/')
# If there's a POST request or we see session variables from a
# previous game, we're already mid-game.
# TODO: if move and reset are both in POST, this breaks
if ('move' in request.POST) or ('game' in session):
board_size = session['size']
x_pos = session['x_pos']
o_pos = session['o_pos']
user_side = session['user_side']
ai_level = session['ai_level']
finished = session['finished']
message = session['message']
x_pos_bin = int_to_bin(x_pos, board_size)
o_pos_bin = int_to_bin(o_pos, board_size)
if (not finished) and ('move' in request.POST):
if is_legal_move(x_pos, o_pos, request.POST['move']):
if user_side == 'X':
x_pos, x_pos_bin = add_move(x_pos, request.POST['move'], board_size)
if game_over(x_pos):
finished = True
message = 'You win!'
else:
o_move = ai_move(ai_level, o_pos, x_pos, board_size)
o_pos, o_pos_bin = add_move(o_pos, o_move, board_size)
if game_over(o_pos):
finished = True
message = 'You lose!'
else:
o_pos, o_pos_bin = add_move(o_pos, request.POST['move'], board_size)
if game_over(o_pos):
finished = True
message = 'You win!'
else:
x_move = ai_move(ai_level, x_pos, o_pos, board_size)
x_pos, x_pos_bin = add_move(x_pos, x_move, board_size)
if game_over(x_pos):
finished = True
message = 'You lose!'
if not finished and (bit_count(x_pos | o_pos) == board_size**2):
finished = True
message = 'It\'s a tie!'
else:
# New games for now randomly pick between you or AI starting
coin_toss = randrange(2)
# 0: AI goes first, 1: You go first
# X is for the player going first
if coin_toss == 0:
user_side = 'O'
# Eventually use ai_move, for now assume always go center
x_pos, x_pos_bin = add_move(x_pos, '000010000', board_size)
else:
user_side = 'X'
x_pos = int(x_pos_bin, 2)
o_pos = int(o_pos_bin, 2)
session['game'] = True
session['size'] = board_size
session['x_pos'] = x_pos
session['o_pos'] = o_pos
session['user_side'] = user_side
session['ai_level'] = ai_level
session['finished'] = finished
session['message'] = message
session.save()
positions = []
for i in range(board_size):
positions.append([])
for j in range(board_size):
if x_pos_bin[(i*board_size)+j] == '1':
positions[i].append('X')
elif o_pos_bin[(i*board_size)+j] == '1':
positions[i].append('O')
else:
positions[i].append('')
# Absolutely no idea if this is proper or not, but I'd rather
# not fish through the entire function for declared context
# variables, so I'm going with sticking them all at the end.
c.board_size = board_size
c.positions = positions
c.user_side = user_side
c.finished = finished
c.message = message
c.this_url = request.environ.get('PATH_INFO')
if request.is_xhr:
return self.json(positions)
return render('/game/new.mako')
def cont_game(self, id):
# Continue an existing Human Versus game
game = self.game_q.filter_by(id=id).first()
if not game:
return redirect('/')
message = ''
user_side = ''
finished = False
board_size = game.size
x_pos = game.x_pos
o_pos = game.o_pos
x_pos_bin = int_to_bin(x_pos, board_size)
o_pos_bin = int_to_bin(o_pos, board_size)
if 'move' in request.POST:
if 'user_side' in session:
user_side = session['user_side']
elif user_side == '':
# Determine your side by the person whose turn it should be
# Note: I have no idea what security issues this raises
# should one user maliciously and purposfully clear their
# cookies.
if bit_count(x_pos) <= bit_count(o_pos):
user_side = 'X'
else:
user_side = 'O'
session['user_side'] = user_side
session.save()
if (not game_over(x_pos)) and (not game_over(o_pos)) and is_legal_move(x_pos, o_pos, request.POST['move'], user_side):
if user_side == 'X':
x_pos, x_pos_bin = add_move(x_pos, request.POST['move'], board_size)
game.x_pos = x_pos
Session.commit()
else:
o_pos, o_pos_bin = add_move(o_pos, request.POST['move'], board_size)
game.o_pos = o_pos
Session.commit()
if game_over(x_pos):
finished = True
if user_side == 'X':
message = 'You win!'
elif user_side == 'O':
message = 'You lose!'
elif game_over(o_pos):
finished = True
if user_side == 'O':
message = 'You win!'
elif user_side == 'X':
message = 'You lose!'
elif bit_count(x_pos | o_pos) == (board_size**2):
finished = True
message = 'It\'s a tie!'
positions = []
for i in range(board_size):
positions.append([])
for j in range(board_size):
if x_pos_bin[(i*board_size)+j] == '1':
positions[i].append('X')
elif o_pos_bin[(i*board_size)+j] == '1':
positions[i].append('O')
else:
positions[i].append('')
c.board_size = board_size
c.positions = positions
c.user_side = user_side
c.finished = finished
c.message = message
c.this_url = request.environ.get('PATH_INFO')
# c.this_url = url.current(qualified=False)
if request.is_xhr:
return self.json(positions)
return render('/game/continue.mako')