def expand(self):
"""Generate children"""
for action in possible_actions(self.state, player(self.state)):
new_child = self.new_child(apply_action(self.state, action), self)
new_child.action = action
self._children.append(new_child)
self.is_expanded = True
def greedy_action(self):
"""
:strategy: Choose the best action without considering opponent moves.
"""
best_eval, best_action, best_new_action = -inf, None, None
for action in possible_actions(self.state, self.colour):
new_state = apply_action(self.state, action)
new_eval = runner(new_state)[PLAYER_HASH[self.colour]]
if new_eval > best_eval:
best_eval = new_eval
best_action = action
if Z_hash(new_state) not in self.counts:
best_new_action = action
return best_new_action if not None else best_action
def update(self, colour, action):
"""
This method is called at the end of every turn (including your player’s
turns) to inform your player about the most recent, assumedly correct,
action."""
self.state = apply_action(self.state, action)
def update(self, colour, action):
"""
Updates a players action and adds a turn count.
"""
self.state = apply_action(self.state, action)
self.counts[Z_hash(self.state)] += 1