def __init__(self, player_number):
"""Initializes the Connect4Player. DON'T CHANGE THIS!"""
self.player_number = player_number
self.board = Board(player_number)
self.hard_coded_moves = True
self.their_move_stack = []
class AIConnect4Player(object):
def __init__(self, player_number):
"""Initializes the Connect4Player. DON'T CHANGE THIS!"""
self.player_number = player_number
self.board = Board(player_number)
self.hard_coded_moves = True
self.their_move_stack = []
@Connect4Timer
def move(self, board):
"""Returns the next move of the Connect4Player.
The value returned is an integer from 0-6, specifying
which column the player's piece should be dropped in
Arguments:
board -- this is a 6x7 array containing the
contents of the current game board.
Each entry will be either 0 (empty),
1 (occupied by Player 1) or 2 (occupied by Player 2)
"""
their_move = None
for row, move in zip(self.board.array(), board):
for index, item in enumerate(move):
if item != row[index]:
their_move = index
self.board.move(index)
move = self.move_logic(their_move)
self.board.move(move)
return move
def move_logic(self, their_move):
"""Returns a single move or array of moves to take for a given board"""
# Check for hard coded preconditions
if self.hard_coded_moves:
hard_coded_move = self.check_hard_coded_moves(their_move)
if hard_coded_move != -1:
alpha_beta(self.board, 4, self.player_number)
return hard_coded_move
self.hard_coded_moves = False
if self.board.move_count < 12:
# We need to build up our move cache. Not like it matters at this
# depth anyway.
move = alpha_beta(self.board, 5, self.player_number)
else:
move = alpha_beta(self.board, 6, self.player_number)
return move
def check_hard_coded_moves(self, their_move):
if self.player_number == 1 and self.board.move_count == 0:
return 3
self.their_move_stack.append(their_move)
if self.player_number == 1:
return self.player_one_hardcoded_moves(their_move)
else:
return self.player_two_hardcoded_moves(their_move)
return -1
def player_one_hardcoded_moves(self, their_move):
if self.board.move_count == 0:
return 3
if self.board.move_count == 2:
if their_move == 3:
return 3
elif their_move == 1:
return 5
elif their_move == 4:
return 0
else:
return -1
elif self.board.move_count == 4:
if self.their_move_stack == [3, 3]:
return 3
elif self.their_move_stack == [3, 2]:
return 2
elif self.their_move_stack == [1, 4]:
return 5
elif self.their_move_stack == [4, 3]:
return 3
elif self.their_move_stack == [4, 0]:
return 1
elif self.board.move_count == 6:
if self.their_move_stack == [3, 3, 4]:
return 4
elif self.their_move_stack == [3, 2, 2]:
return 3
elif self.their_move_stack == [4, 3, 3]:
return 1
return -1
def player_two_hardcoded_moves(self, their_move):
if self.board.move_count == 1:
return 4
elif self.board.move_count == 3:
if their_move == 1:
return 0
elif their_move == 0:
return 2
elif self.board.move_count == 5:
if self.their_move_stack == [3, 0, 3]:
return 3
elif self.their_move_stack == [3, 1, 1]:
return 1
return -1
