def update()

in textworld/generator/game.py [0:0]

• 13 lines of code
• 13 McCabe index (conditional complexity)

    def update(self, action: Optional[Action] = None, state: Optional[State] = None) -> None:
        """ Update event progression given available information.

        Args:
            action: Action potentially affecting the event progression.
            state: Current game state.
        """
        if self.done:
            return  # Nothing to do, the quest is already done.

        if state is not None:
            # Check if event is triggered.
            self._triggered = self.event.is_triggering(state)

            # Try compressing the winning policy given the new game state.
            if self.compress_policy(state):
                return  # A shorter winning policy has been found.

        if action is not None and not self._tree.empty:
            # Determine if we moved away from the goal or closer to it.
            changed, reverse_action = self._tree.remove(action)
            if changed and reverse_action is None:  # Irreversible action.
                self._untriggerable = True  # Can't track quest anymore.

            if changed and reverse_action is not None:
                # Rebuild policy.
                self._policy = tuple(self._tree.flatten())