def save(self):
"""
Save any changes in difficulty to the yaml save file
"""
dikt = save_file.load()
dikt['difficulty'] = self.difficulty
save_file.save(dikt)
def load_previous(self, code_str):
"""
Load a previous board from memory
"""
if code_str is None or code_str == '':
return self.show_turns(code_str)
# Load fens from file
fens = save_file.load().setdefault('fens', [])
fen = fens[int(code_str)]
self.referee.board.set_fen(fen)
self.show_board()
def commit_fen(self):
"""
Add the current board state to the board, so if there is a crash or
mistake, we can reset the board to a previous state.
"""
dikt = save_file.load()
dikt.setdefault('fens', [])
# Add to the front of the fens list (nicer looking)
dikt['fens'].insert(0, self.board.fen())
# Only keep (for now) the past 10 board states
while len(dikt['fens']) > 10:
dikt['fens'].pop()
save_file.save(dikt)
def __init__(self, difficulty=None, turn_time=timedelta(seconds=10)):
"""
Creates a stockfish AI chess player.
The AI difficulty is modulated by limiting stockfish's intelligence
(difficulty is float [0-1], roughly what % of it's brain it can to use)
The amount of time stockfish can spend
thinking on a turn is limited to the given turn_time (default 10)
"""
self.turn_time = turn_time
# If we were given a difficulty, use that
if difficulty is not None:
self.difficulty = difficulty
# Otherwise, load it from file (default of .5)
else:
self.difficulty = save_file.load()['difficulty']
def show_turns(self, code_str):
"""
Show previous boards stored in memory
"""
# Board so we can print expected fen load
board = self.referee.board.copy()
# Load fens from file
fens = save_file.load().setdefault('fens', [])
self.hear('Previously played boards:')
for i, fen in enumerate(fens):
board.set_fen(fen)
player_name = self.referee.active_player(board).name
# Get string explain that saved fen
s = f'\n#{i} {player_name}:\n{fen}\n{board}'
# Add indentation
s = '\n '.join(s.split('\n'))
self.hear(s)
self.hear('\nTo load one of these, use the prev code.\n'
'Eg, to load #5, input: "*prev 5"')