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fixed indentation
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@96hoshi
96hoshi committed Nov 1, 2020
1 parent dca2616 commit d3fb45f
Showing 1 changed file with 53 additions and 38 deletions.
91 changes: 53 additions & 38 deletions moves.py
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,7 @@ def print_movement(m, color):

# --------------------utilities------------------------------


# check if the pawn is inside the board
def box_legal(i, j):
return i in range(SIZE) and j in range(SIZE)
Expand Down Expand Up @@ -123,16 +124,19 @@ def is_only_color(color, board):

# check if is possible to eat at least a pawn from a position (i, j)
def can_eat(i, dir_i, j, dir_j, color, board):
if box_legal(i + dir_i, j + dir_j) and board[i + dir_i][j + dir_j] != EMPTY:
if not color_check(i + dir_i, j + dir_j, color, board):
if box_legal(i + dir_i * 2, j + dir_j * 2) and board[i + dir_i * 2][j + dir_j * 2] == EMPTY:

if not is_dama(board[i + dir_i][j + dir_j]):
# I can eat
return True
elif is_dama(board[i][j]):
# I can eat a dama if I'm a dama
return True
if box_legal(i + dir_i, j + dir_j):
if board[i + dir_i][j + dir_j] != EMPTY:
# check if there is a box with a piece
if not color_check(i + dir_i, j + dir_j, color, board):
if box_legal(i + dir_i * 2, j + dir_j * 2):
if board[i + dir_i * 2][j + dir_j * 2] == EMPTY:
# check if is possible to perform a eat move
if not is_dama(board[i + dir_i][j + dir_j]):
# it's a simple pawn, I can eat
return True
elif is_dama(board[i][j]):
# I can eat a dama if I'm a dama
return True
return False


Expand All @@ -143,7 +147,7 @@ def has_player_moves(color, board):
for j in range(SIZE):
if board[i][j] is not EMPTY:
if color_check(i, j, color, board):
# if the enemy can do a movement then it's not a win condition
# if the enemy can do a movement then it's not a win
if legal_moves(i, j, board):
return True

Expand Down Expand Up @@ -389,42 +393,51 @@ def board_forced_moves(color, board):
for i in range(SIZE):
for j in range(SIZE):
if color_check(i, j, color, board):
calculate_forced_moves(i, j, color, [(i, j)], [], is_dama(board[i][j]), board)
calculate_forced_moves(
i, j, color, [(i, j)], [], is_dama(board[i][j]), board)

return max_paths


# check recursively if an eat move can be performed in a direction
# editing and saving the path
def check_direction(i, dir_i, j, dir_j, color, path, eaten, dama, board):
if box_legal(i + dir_i, j + dir_j) and board[i + dir_i][j + dir_j] != EMPTY:
# if the box is occupied by the enemy
if not color_check(i + dir_i, j + dir_j, color, board):
# if the box after is empty
if box_legal(i + dir_i * 2, j + dir_j * 2) and board[i + dir_i*2][j + dir_j * 2] == EMPTY:
# it's not a dama
if not is_dama(board[i + dir_i][j + dir_j]):
# a pawn is eaten
new_eaten = copy_new_eaten(eaten, "p")
new_path = copy_new_path(path, (i + dir_i * 2, j + dir_j * 2))
# copy of the new board with move performed
new_board = copy_new_board(i, j, i + dir_i * 2, j + dir_j * 2, board)
calculate_forced_moves(i + dir_i * 2, j + dir_j * 2, color, new_path, new_eaten, dama, new_board)
return False
# if it's a dama and I'm a dama too
elif dama:
# a dama was eaten
new_eaten = copy_new_eaten(eaten, "d")
new_path = copy_new_path(path, (i + dir_i * 2, j + dir_j * 2))
new_board = copy_new_board(i, j, i + dir_i * 2, j + dir_j * 2, board)
calculate_forced_moves(i + dir_i * 2, j + dir_j * 2, color, new_path, new_eaten, dama, new_board)
return False
def check_direction(i, dir_i, j, dir_j, c, path, eaten, dama, board):
if box_legal(i + dir_i, j + dir_j):
if board[i + dir_i][j + dir_j] != EMPTY:
# if the box is occupied by the enemy
if not color_check(i + dir_i, j + dir_j, c, board):
# if the box after is empty
if box_legal(i + dir_i * 2, j + dir_j * 2):
if board[i + dir_i * 2][j + dir_j * 2] == EMPTY:
# it's not a dama
if not is_dama(board[i + dir_i][j + dir_j]):
# a pawn is eaten
n_e = copy_new_eaten(eaten, "p")
n_p = copy_new_path(
path, (i + dir_i * 2, j + dir_j * 2))
# copy of the new board with move performed
n_b = copy_new_board(
i, j, i + dir_i * 2, j + dir_j * 2, board)
calculate_forced_moves(
i + dir_i * 2, j + dir_j * 2, c, n_p, n_e, dama, n_b)
return False
# if it's a dama and I'm a dama too
elif dama:
# a dama was eaten
n_e = copy_new_eaten(eaten, "d")
n_p = copy_new_path(
path, (i + dir_i * 2, j + dir_j * 2))
n_b = copy_new_board(
i, j, i + dir_i * 2, j + dir_j * 2, board)
calculate_forced_moves(
i + dir_i * 2, j + dir_j * 2, c, n_p, n_e, dama, n_b)
return False

return True


# check in all direction if a forced moved is possible form a position.
# in the end register it
# in the end register it
def calculate_forced_moves(i, j, color, path, eaten, dama, board):
stop = True
dir_i = 1
Expand All @@ -442,8 +455,10 @@ def calculate_forced_moves(i, j, color, path, eaten, dama, board):
# if I'm a dama check the other two directions
if dama:
dir_i *= -1
stop = check_direction(i, dir_i, j, dx, color, path, eaten, dama, board)
stop = check_direction(i, dir_i, j, sx, color, path, eaten, dama, board)
stop = check_direction(i, dir_i, j, dx, color,
path, eaten, dama, board)
stop = check_direction(i, dir_i, j, sx, color,
path, eaten, dama, board)

# add the move to the set
if stop and len(path) > 1:
Expand Down

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