def test_apply_player_action_ab():
test_board1 = cm.initialize_game_state()
test_board2 = cm.initialize_game_state()
player_map, mask_map = cm.board_to_bitmap(test_board1, cm.PLAYER1)
n_rows = test_board1.shape[0]
moves = np.array([3, 4, 3, 2, 2, 2, 2, 4, 1, 3, 4, 1, 0, 5])
player = cm.PLAYER1
for mv in moves:
print('\n')
cm.apply_player_action(test_board2, mv, player)
player = cm.BoardPiece(player % 2 + 1)
test2_map = cm.board_to_bitmap(test_board2, player)[1]
print(bin(test2_map))
player_map, mask_map = cm.apply_player_action_ab(
player_map, mask_map, mv, n_rows)
print(bin(mask_map))
test_board1 = cm.initialize_game_state()
player_map, mask_map = cm.board_to_bitmap(test_board1, cm.PLAYER1)
n_rows = test_board1.shape[0]
moves = np.array([3, 3, 3, 3, 3, 3, 3])
for mv in moves:
print('\n')
player_map, mask_map = cm.apply_player_action_ab(
player_map, mask_map, mv, n_rows)
print(bin(mask_map))
def test_check_end_state():
test_board = cm.initialize_game_state()
test_board = np.ones(test_board.shape) * 3
board_map, board_mask = cm.board_to_bitmap(test_board, cm.PLAYER1)
empty_board = mpz('0' * test_board.size)
board_map = mpz(board_map)
board_mask = mpz(board_mask)
assert cm.check_end_state(board_map, board_mask, empty_board,
test_board.shape) == cm.GameState.IS_DRAW
test_board[0, 1] = cm.PLAYER1
test_board[1, 2] = cm.PLAYER1
test_board[2, 3] = cm.PLAYER1
test_board[3, 4] = cm.PLAYER1
board_map, board_mask = cm.board_to_bitmap(test_board, cm.PLAYER1)
empty_board = mpz('0' * test_board.size)
board_map = mpz(board_map)
board_mask = mpz(board_mask)
assert cm.check_end_state(board_map, board_mask, empty_board,
test_board.shape) == cm.GameState.IS_WIN
board_map, board_mask = cm.board_to_bitmap(test_board, cm.PLAYER1)
empty_board = mpz('0' * test_board.size)
board_map = mpz(board_map)
board_mask = mpz(board_mask)
assert cm.check_end_state(board_map, board_mask, empty_board,
test_board.shape) == cm.GameState.IS_WIN
def generate_move_mcts(
board: Board, player: BoardPiece, saved_state: Optional[SavedState]
) -> Tuple[PlayerAction, Optional[SavedState]]:
"""
Agent selects a move based on a minimax depth first search, with
alpha-beta pruning.
:param board: 2d array representing current state of the game
:param player: the player who made the last move (active player)
:param saved_state: ???
:return: the agent's selected move
"""
# TODO: return chosen action subtree using saved_state, to improve
# performance
# Calculate the board shape
bd_shp = board.shape
# If the board is empty, play in the center column
if np.all(board == NO_PLAYER):
action = np.floor(np.median(np.arange(bd_shp[1])))
return PlayerAction(action), saved_state
# Convert the board to bitmaps and define the max_player board
max_board, mask_board = board_to_bitmap(board, player)
# Create a root node
root_mcts = Connect4Node(max_board, mask_board, bd_shp, -1, True)
# Call MCTS
action = mcts(root_mcts)
return PlayerAction(action), saved_state
def generate_move_alpha_beta(
board: Board, player: BoardPiece, saved_state: Optional[SavedState]
) -> Tuple[PlayerAction, Optional[SavedState]]:
"""
Agent selects a move based on a minimax depth first search, with
alpha-beta pruning.
:param board: 2d array representing current state of the game
:param player: the player who made the last move (active player)
:param saved_state: ???
:return: the agent's selected move
"""
# If the board is empty, play in the center column
if np.all(board == NO_PLAYER):
action = np.floor(np.median(np.arange(board.shape[1])))
return PlayerAction(action), saved_state
# Convert the board to bitmaps and define the min_player board
max_board, mask_board = board_to_bitmap(board, player)
# Call alpha_beta
alpha0 = -100000
beta0 = 100000
score, action = alpha_beta(max_board, mask_board, True, 0, alpha0, beta0,
board.shape)
return PlayerAction(action), saved_state
def heuristic_solver_bits(board: Board,
player: BoardPiece,
max_player: bool = True):
"""
"""
# Convert the boards to bitmaps and define the min_player board
max_board, mask_board = board_to_bitmap(board, player)
min_board = max_board ^ mask_board
empty_board = ~mask_board
# Convert bitmaps to mpz objects
max_board = mpz(max_board)
min_board = mpz(min_board)
empty_board = mpz(empty_board)
# Initialize the score and point values
score = 0
# Define the shift constants
b_cols = board.shape[1]
# Shift order: horizontal, vertical, \, /
shift_list = [1, b_cols + 1, b_cols, b_cols + 2]
# Accumulate score for max_player position
for shift in shift_list:
score += bit_solver(shift, max_board, empty_board)
# Reduce score for min_player position
for shift in shift_list:
score -= bit_solver(shift, min_board, empty_board)
if max_player:
return GameScore(score)
else:
return GameScore(-score)
def generate_full_board(player, empty_spaces=0):
# Generate an empty board
arr_board = cm.initialize_game_state()
# Convert board to bitmap
bit_board, bit_mask = cm.board_to_bitmap(arr_board, player)
# Calculate the board shape
bd_shp = arr_board.shape
# While the board is not full, continue placing pieces
while popcount(bit_mask) != bd_shp[0] * bd_shp[1] - empty_spaces:
# Select a random move in a column that is not full
move = -1
while not (0 <= move < bd_shp[1]):
move = np.random.choice(bd_shp[1])
try:
move = cm.PlayerAction(move)
cm.top_row(arr_board, move)
except IndexError:
move = -1
# Apply the move to both boards
cm.apply_action(arr_board, move, player)
bit_board, bit_mask = cm.apply_action_cp(bit_board, bit_mask, move,
bd_shp)
# Switch to the next player
player = cm.BoardPiece(player % 2 + 1)
return arr_board, bit_board, bit_mask, player
def test_board_to_bitmap():
test_board = cm.initialize_game_state()
test_board[0, 2] = cm.PLAYER1
test_board[0, 3] = cm.PLAYER2
test_board[0, 4] = cm.PLAYER2
test_board[0, 5] = cm.PLAYER1
test_board[1, 2] = cm.PLAYER1
test_board[1, 3] = cm.PLAYER1
test_board[1, 4] = cm.PLAYER2
test_board[2, 2] = cm.PLAYER1
test_board[2, 3] = cm.PLAYER2
test_board[3, 2] = cm.PLAYER2
test_board[3, 3] = cm.PLAYER2
test_board[4, 3] = cm.PLAYER1
# test_board[0, 2:4] = cm.PLAYER1
# test_board[0, 5] = cm.PLAYER1
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
# mask_pos = int('000000000000100000001100000011000001110000111100', 2)
# p1_pos = int('000000000000100000000000000001000000110000100100', 2)
# p2_pos = int('000000000000000000001100000010000001000000011000', 2)
mask_pos = int('0000000000000100000110011111000111100000000000000', 2)
p1_pos = int('000000000000010000000001001000001110000000000000', 2)
p2_pos = int('0000000000000000000110001101000100000000000000000', 2)
print('')
# print(bin(p1_pos))
print(bin(cm.board_to_bitmap(test_board, cm.PLAYER1)[0]))
# print(bin(p2_pos))
print(bin(cm.board_to_bitmap(test_board, cm.PLAYER2)[0]))
# print(bin(mask_pos))
print(bin(cm.board_to_bitmap(test_board, cm.PLAYER2)[1]))
# print(bin(cm.board_to_bitmap(test_board, cm.PLAYER1)[1]))
assert cm.board_to_bitmap(test_board, cm.PLAYER2)[0] == p2_pos
assert cm.board_to_bitmap(test_board, cm.PLAYER2)[1] == mask_pos
assert cm.board_to_bitmap(test_board, cm.PLAYER1)[0] == \
(mask_pos ^ p2_pos)
def test_mcts_algorithm():
""" MCTS plays against itself and tries to catch guaranteed wins
Use the oracle in the while loop. Calculates statistics based on how well
it performs at playing optimally once a guaranteed win is detected by the
oracle.
"""
# Set parameter values and initialize counters
a0 = -100000
b0 = 100000
n_games = 40
n_wins = 0
n_wins_opt = 0
n_def_wins = 0
for i in range(n_games):
# Generate an empty board
arr_board = cm.initialize_game_state()
# Convert board to bitmap
player = cm.PLAYER1
bit_b, bit_m = cm.board_to_bitmap(arr_board, player)
# Calculate the board shape
bd_shp = arr_board.shape
# Initialize the board state variable
bd_state = cm.check_end_state(bit_b, bit_m, bd_shp)
# Initialize a list of moves
mv_list = []
# Initialize counters
mv_cnt = 0
num_mvs = 0
def_win = False
while bd_state == cm.GameState.STILL_PLAYING:
# Generate an action using MCTS
action, _ = generate_move(arr_board.copy(), player, None)
# Update the list of moves
mv_list.append(action)
# Apply the action to both boards
cm.apply_action(arr_board, action, player)
bit_b, bit_m = cm.apply_action_cp(bit_b, bit_m, action, bd_shp)
# Switch to the next player
player = cm.BoardPiece(player % 2 + 1)
# Check for guaranteed win, if none detected, continue playing
if not def_win:
score, depth = alpha_beta_oracle(bit_b, bit_m, True, a0, b0,
bd_shp, 0)
# If a win is guaranteed, determine when it should occur
if score > 50 and abs(score) < 200:
print('Score returned is {}'.format(score))
num_mvs = depth
n_def_wins += 1
def_win = True
print(cm.pretty_print_board(arr_board))
print('Last move by player {}, in column {}, player {} '
'should win in {} move(s) at most'.format(
player % 2 + 1, action, player, num_mvs))
# Once a win is detected, check whether MCTS finds it optimally
else:
mv_cnt += 1
print(cm.pretty_print_board(arr_board))
bd_state = cm.check_end_state(bit_b ^ bit_m, bit_m, bd_shp)
if bd_state == cm.GameState.IS_WIN:
print(mv_list)
print('Player {} won in {} move(s)'.format(
player % 2 + 1, mv_cnt))
n_wins += 1
if mv_cnt <= num_mvs:
n_wins_opt += 1
break
# Check the game state
bd_state = cm.check_end_state(bit_b, bit_m, bd_shp)
# Print the number of wins and how many were optimal
print('The MCTS algorithm clinched {:4.1f}% of its guaranteed wins, '
'and won in an optimal number of moves {}% of the time'.format(
100 * (n_wins / n_def_wins), 100 * (n_wins_opt / n_wins)))
def test_alpha_beta_oracle():
# Generate an empty board
arr_board = cm.initialize_game_state()
# Convert board to bitmap
player = cm.PLAYER1
bit_board, bit_mask = cm.board_to_bitmap(arr_board, player)
# Calculate the board shape
bd_shp = arr_board.shape
a0 = -100000
b0 = 100000
# Define a list of moves
move_list = [3, 3, 4, 4, 5, 5]
for mv in move_list[:-2]:
# Apply the move to both boards
cm.apply_action(arr_board, mv, player)
bit_board, bit_mask = cm.apply_action_cp(bit_board, bit_mask, mv,
bd_shp)
# Switch to the next player
player = cm.BoardPiece(player % 2 + 1)
print(cm.pretty_print_board(arr_board))
score, depth = alpha_beta_oracle(bit_board, bit_mask, True, a0, b0, bd_shp,
0)
print('Player {} should win in {} moves.'.format(
('X' if player == cm.BoardPiece(1) else 'O'), depth))
assert depth == 3
# Apply next move to both boards
cm.apply_action(arr_board, move_list[-2], player)
bit_board, bit_mask = cm.apply_action_cp(bit_board, bit_mask,
move_list[-2], bd_shp)
# Switch to the next player
player = cm.BoardPiece(player % 2 + 1)
print(cm.pretty_print_board(arr_board))
score, depth = alpha_beta_oracle(bit_board, bit_mask, True, a0, b0, bd_shp,
0)
print('Player {} should lose in {} moves.'.format(
('X' if player == cm.BoardPiece(1) else 'O'), depth))
assert depth == 2
# Apply next move to both boards
cm.apply_action(arr_board, move_list[-1], player)
bit_board, bit_mask = cm.apply_action_cp(bit_board, bit_mask,
move_list[-1], bd_shp)
# Switch to the next player
player = cm.BoardPiece(player % 2 + 1)
print(cm.pretty_print_board(arr_board))
score, depth = alpha_beta_oracle(bit_board, bit_mask, True, a0, b0, bd_shp,
0)
print('Player {} should win in {} move.'.format(
('X' if player == cm.BoardPiece(1) else 'O'), depth))
assert depth == 1
print('\n##########################################################\n')
# Generate an empty board
arr_board = cm.initialize_game_state()
# Convert board to bitmap
player = cm.PLAYER1
bit_board, bit_mask = cm.board_to_bitmap(arr_board, player)
# Full game
# move_list = [3, 2, 3, 3, 3, 2, 2, 2, 5, 4, 0, 4, 4, 4, 1, 1, 5, 2, 6]
move_list = [3, 2, 3, 3, 3, 2, 2, 2, 5, 4, 0, 4, 4, 4]
for mv in move_list[:-1]:
# Apply the move to both boards
cm.apply_action(arr_board, mv, player)
bit_board, bit_mask = cm.apply_action_cp(bit_board, bit_mask, mv,
bd_shp)
# Switch to the next player
player = cm.BoardPiece(player % 2 + 1)
print(cm.pretty_print_board(arr_board))
action, _ = generate_move(arr_board.copy(), player, None)
print('MCTS plays in column {}'.format(action))
try:
assert (action == 2 or action == 5)
except AssertionError:
print('NOTE: MCTS doesn\'t block this win unless it is given '
'over 5s to search. It should play in column 2 or 5.')
# Apply next move to both boards
cm.apply_action(arr_board, move_list[-1], player)
bit_board, bit_mask = cm.apply_action_cp(bit_board, bit_mask,
move_list[-1], bd_shp)
# Switch to the next player
player = cm.BoardPiece(player % 2 + 1)
print(cm.pretty_print_board(arr_board))
score, depth = alpha_beta_oracle(bit_board, bit_mask, True, a0, b0, bd_shp,
0)
print('Player {} should win in {} move.'.format(
('X' if player == cm.BoardPiece(1) else 'O'), depth))
assert depth == 5
print('\n##########################################################\n')
# Test other hard coded boards
move_list_list = [[3, 4, 3, 3, 1, 0, 4, 4, 1, 1, 3, 0, 0, 4, 5, 5],
[
3, 3, 4, 5, 1, 2, 4, 4, 3, 4, 3, 4, 4, 3, 1, 1, 0, 5,
1, 5, 5, 1, 0, 0
]]
# Full games
# [3, 4, 3, 3, 1, 0, 4, 4, 1, 1, 3, 0, 0, 4, 5, 5, 4, 6, 2, 2, 2]
# [3, 4, 3, 3, 1, 0, 4, 4, 1, 1, 3, 0, 0, 4, 4, 1, 1, 5, 5, 5, 3,
# 5, 5, 4, 5, 0, 2, 0, 2]
for move_list in move_list_list:
# Generate an empty board
arr_board = cm.initialize_game_state()
# Convert board to bitmap
player = cm.PLAYER1
bit_board, bit_mask = cm.board_to_bitmap(arr_board, player)
for mv in move_list:
# Apply the move to both boards
cm.apply_action(arr_board, mv, player)
bit_board, bit_mask = cm.apply_action_cp(bit_board, bit_mask, mv,
bd_shp)
# Switch to the next player
player = cm.BoardPiece(player % 2 + 1)
# Print the current board state
print(cm.pretty_print_board(arr_board))
# Check for guaranteed wins
score, depth = alpha_beta_oracle(bit_board, bit_mask, True, a0, b0,
bd_shp, 0)
print('It is Player {}\'s turn. They should win in {} moves.'.format(
('X' if player == cm.BoardPiece(1) else 'O'), depth))
action, _ = generate_move(arr_board.copy(), player, None)
print('Player {} plays in column {}'.format(
('X' if player == cm.BoardPiece(1) else 'O'), action))
print('\n##########################################################\n')
def test_heuristic_solver():
max_depth = 0
# test_board = cm.initialize_game_state()
# test_board[0, 1:4] = cm.PLAYER1
# test_board[1, 3] = cm.PLAYER2
# board_str = cm.pretty_print_board(test_board)
# print('')
# print(board_str)
# assert (agm.heuristic_solver_bits(test_board, cm.PLAYER1, True) ==
# agm.heuristic_solver(test_board, cm.PLAYER1, True))
#
# test_board = cm.initialize_game_state()
# test_board[0, 2:5] = cm.PLAYER1
# test_board[1, 2:5] = cm.PLAYER2
# board_str = cm.pretty_print_board(test_board)
# print('')
# print(board_str)
# assert (agm.heuristic_solver_bits(test_board, cm.PLAYER2, False) ==
# agm.heuristic_solver(test_board, cm.PLAYER1, True))
# test_board = cm.initialize_game_state()
# test_board[0, 2:4] = cm.PLAYER1
# test_board[1, 2] = cm.PLAYER1
# test_board[0, 1] = cm.PLAYER2
# test_board[2, 2] = cm.PLAYER2
# test_board[1, 3] = cm.PLAYER2
# board_str = cm.pretty_print_board(test_board)
# print('')
# print(board_str)
# # assert agm.heuristic_solver(test_board, cm.PLAYER1, True) == 0
# test_board_cp = test_board.copy()
# assert agm.alpha_beta(test_board_cp, cm.PLAYER1, True, max_depth,
# -1000, 1000)[1] == 4
#
# test_board = cm.initialize_game_state()
# test_board[0, 3:6] = cm.PLAYER1
# test_board[1, 3] = cm.PLAYER2
# test_board[0, 2] = cm.PLAYER2
# board_str = cm.pretty_print_board(test_board)
# print('')
# print(board_str)
# # assert agm.heuristic_solver(test_board, cm.PLAYER2, True) == -3
# test_board_cp = test_board.copy()
# assert agm.alpha_beta(test_board_cp, cm.PLAYER2, True, max_depth,
# -1000, 1000)[1] == 6
#
# test_board = cm.initialize_game_state()
# test_board[:3, 1] = cm.PLAYER1
# test_board[0, 3] = cm.PLAYER1
# test_board[3, 1] = cm.PLAYER2
# test_board[0, 2] = cm.PLAYER2
# test_board[1, 3] = cm.PLAYER2
# test_board[0, 4] = cm.PLAYER2
# board_str = cm.pretty_print_board(test_board)
# print('')
# print(board_str)
# # assert agm.heuristic_solver(test_board, cm.PLAYER2, True) == 5
# test_board_cp = test_board.copy()
# assert not agm.alpha_beta(test_board_cp, cm.PLAYER2, True, max_depth,
# -1000, 1000)[1] == 2
#
# test_board = cm.initialize_game_state()
# moves = np.array([3, 1, 2, 2, 5, 4, 4, 1, 2, 4, 2, 4, 2, 2, 3])
# player = cm.PLAYER1
# for mv in moves:
# cm.apply_player_action(test_board, mv, player, False)
# player = cm.switch_player(player)
#
# board_str = cm.pretty_print_board(test_board)
# print('')
# print(board_str)
# test_board_cp = test_board.copy()
# assert agm.alpha_beta(test_board_cp, cm.PLAYER2, True, max_depth,
# -1000, 1000)[1] == 3
#
# test_board = cm.initialize_game_state()
# moves = np.array([3, 1, 4, 5, 3, 3, 4, 5, 4, 4, 3, 5, 5, 5, 4, 6, 3, 3,
# 5, 0, 1, 1, 1, 1, 1, 0, 4, 6, 0, 6])
# player = cm.PLAYER1
# for mv in moves:
# cm.apply_player_action(test_board, mv, player, False)
# player = cm.switch_player(player)
#
# board_str = cm.pretty_print_board(test_board)
# print('')
# print(board_str)
# test_board_cp = test_board.copy()
# assert agm.alpha_beta(test_board_cp, cm.PLAYER1, True, max_depth,
# -1000, 1000)[1] == 6
#
# test_board = cm.initialize_game_state()
# moves = np.array([3, 1, 2, 3, 2, 4, 2, 2, 3, 3, 2, 3, 2, 0, 3, 0, 0,
# 5, 0, 6, 0, 0, 6, 5, 5, 5, 5, 5])
# player = cm.PLAYER1
# for mv in moves:
# cm.apply_player_action(test_board, mv, player, False)
# player = cm.switch_player(player)
#
# board_str = cm.pretty_print_board(test_board)
# print('')
# print(board_str)
# test_board_cp = test_board.copy()
# assert agm.alpha_beta(test_board_cp, cm.PLAYER1, True, max_depth,
# -1000, 1000)[1] == 6
#
# test_board = cm.initialize_game_state()
# moves = np.array([3, 3, 2, 4, 0, 1, 0, 3, 0, 0, 2, 3, 3, 2, 2, 2, 0, 6,
# 2, 5, 6, 5, 5, 5, 3, 5])
# player = cm.PLAYER1
# for mv in moves:
# cm.apply_player_action(test_board, mv, player, False)
# player = cm.switch_player(player)
#
# board_str = cm.pretty_print_board(test_board)
# print('')
# print(board_str)
# test_board_cp = test_board.copy()
# assert agm.alpha_beta(test_board_cp, cm.PLAYER1, True, max_depth,
# -1000, 1000)[1] != 4
test_board = cm.initialize_game_state()
# test_board[0, 2:5] = cm.PLAYER1
test_board[0, 2:4] = cm.PLAYER1
test_board[0, 1] = cm.PLAYER2
# test_board[0, 4] = cm.PLAYER2
test_board[0, 5] = cm.PLAYER1
# test_board[0, 5] = cm.PLAYER1
# test_board[0, 2] = cm.PLAYER1
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
test_board_cp = test_board.copy()
board_map, board_mask = cm.board_to_bitmap(test_board_cp, cm.PLAYER1)
print(agm.heuristic_solver_bits(board_map, board_mask,
test_board_cp.shape[0], True))
def test_connect_four_bits():
# Test a diagonal
test_board = cm.initialize_game_state()
test_board[0, 3] = cm.PLAYER1
test_board[1, 4] = cm.PLAYER1
test_board[2, 5] = cm.PLAYER1
test_board[3, 6] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test the same diagonal for the other player
test_board = cm.initialize_game_state()
test_board[0, 3] = cm.PLAYER2
test_board[1, 4] = cm.PLAYER2
test_board[2, 5] = cm.PLAYER2
test_board[3, 6] = cm.PLAYER2
player_map, mask_board = cm.board_to_bitmap(test_board, cm.PLAYER1)
player_map2 = player_map ^ mask_board
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map2, test_board.shape[0])
# Rotate the diagonal
test_board = cm.initialize_game_state()
test_board[0, 6] = cm.PLAYER1
test_board[1, 5] = cm.PLAYER1
test_board[2, 4] = cm.PLAYER1
test_board[3, 3] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test a row at the top
test_board = cm.initialize_game_state()
test_board[5, 3] = cm.PLAYER1
test_board[5, 4] = cm.PLAYER1
test_board[5, 5] = cm.PLAYER1
test_board[5, 6] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test a row at the bottom
test_board = cm.initialize_game_state()
test_board[0, 0] = cm.PLAYER1
test_board[0, 1] = cm.PLAYER1
test_board[0, 2] = cm.PLAYER1
test_board[0, 3] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test a column on the left
test_board = cm.initialize_game_state()
test_board[2, 0] = cm.PLAYER1
test_board[3, 0] = cm.PLAYER1
test_board[4, 0] = cm.PLAYER1
test_board[5, 0] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test a column on the right
test_board = cm.initialize_game_state()
test_board[0, 6] = cm.PLAYER1
test_board[1, 6] = cm.PLAYER1
test_board[2, 6] = cm.PLAYER1
test_board[3, 6] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test some things in the middle
test_board = cm.initialize_game_state()
test_board[2, 5] = cm.PLAYER1
test_board[3, 4] = cm.PLAYER1
test_board[4, 3] = cm.PLAYER1
test_board[5, 2] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
test_board = cm.initialize_game_state()
test_board[0, 2] = cm.PLAYER1
test_board[1, 3] = cm.PLAYER1
test_board[2, 4] = cm.PLAYER1
test_board[3, 5] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test the last_action option for column 6
test_board = cm.initialize_game_state()
test_board[0, 3] = cm.PLAYER1
test_board[1, 4] = cm.PLAYER1
test_board[2, 5] = cm.PLAYER1
test_board[3, 6] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test the last_action option for column 5
test_board = cm.initialize_game_state()
test_board[0, 2] = cm.PLAYER1
test_board[1, 3] = cm.PLAYER1
test_board[2, 4] = cm.PLAYER1
test_board[3, 5] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test the last_action option for column 1
test_board = cm.initialize_game_state()
test_board[0, 1] = cm.PLAYER1
test_board[1, 1] = cm.PLAYER1
test_board[2, 1] = cm.PLAYER1
test_board[3, 1] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test the last_action option for column 2 diagonal pattern
test_board = cm.initialize_game_state()
test_board[0, 1] = cm.PLAYER1
test_board[1, 2] = cm.PLAYER1
test_board[2, 3] = cm.PLAYER1
test_board[3, 4] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert cm.connect_four(player_map, test_board.shape[0])
# Test for overflow issues - horizontal
test_board = cm.initialize_game_state()
test_board[0, 4] = cm.PLAYER1
test_board[0, 5] = cm.PLAYER1
test_board[0, 6] = cm.PLAYER1
test_board[1, 0] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert not cm.connect_four(player_map, test_board.shape[0])
# Test for overflow issues - diagonal
test_board = cm.initialize_game_state()
test_board[0, 2] = cm.PLAYER1
test_board[1, 1] = cm.PLAYER1
test_board[2, 0] = cm.PLAYER1
test_board[2, 6] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert not cm.connect_four(player_map, test_board.shape[0])
# Test for overflow issues - vertical
test_board = cm.initialize_game_state()
test_board[3, 1] = cm.PLAYER1
test_board[3, 2] = cm.PLAYER1
test_board[3, 3] = cm.PLAYER1
test_board[4, 0] = cm.PLAYER1
test_board[2, 0] = cm.PLAYER1
player_map = cm.board_to_bitmap(test_board, cm.PLAYER1)[0]
board_str = cm.pretty_print_board(test_board)
print('')
print(board_str)
assert not cm.connect_four(player_map, test_board.shape[0])
