import copy import logging import json from collections import OrderedDict class World(object): def __init__(self, shuffle, logic, mode, difficulty, timer, progressive, goal, algorithm, place_dungeon_items, check_beatable_only, shuffle_ganon, quickswap, fastmenu, disable_music, keysanity, custom, customitemarray): self.shuffle = shuffle self.logic = logic self.mode = mode self.difficulty = difficulty self.timer = timer self.progressive = progressive self.goal = goal self.algorithm = algorithm self.dungeons = [] self.regions = [] self.itempool = [] self.seed = None self.state = CollectionState(self) self.required_medallions = ['Ether', 'Quake'] self._cached_locations = None self._entrance_cache = {} self._region_cache = {} self._entrance_cache = {} self._location_cache = {} self.required_locations = [] self.place_dungeon_items = place_dungeon_items # configurable in future self.shuffle_bonk_prizes = False self.swamp_patch_required = False self.ganon_at_pyramid = True self.sewer_light_cone = mode == 'standard' self.light_world_light_cone = False self.dark_world_light_cone = False self.treasure_hunt_count = 0 self.treasure_hunt_icon = 'Triforce Piece' self.clock_mode = 'off' self.rupoor_cost = 10 self.aga_randomness = True self.lock_aga_door_in_escape = False self.fix_trock_doors = self.shuffle != 'vanilla' self.save_and_quite_from_boss = False self.check_beatable_only = check_beatable_only self.fix_skullwoods_exit = self.shuffle not in ['vanilla', 'simple', 'restricted', 'dungeonssimple'] self.fix_palaceofdarkness_exit = self.shuffle not in ['vanilla', 'simple', 'restricted', 'dungeonssimple'] self.fix_trock_exit = self.shuffle not in ['vanilla', 'simple', 'restricted', 'dungeonssimple'] self.shuffle_ganon = shuffle_ganon self.fix_gtower_exit = self.shuffle_ganon self.can_access_trock_eyebridge = None self.quickswap = quickswap self.fastmenu = fastmenu self.disable_music = disable_music self.keysanity = keysanity self.custom = custom self.customitemarray = customitemarray self.can_take_damage = True self.difficulty_requirements = None self.fix_fake_world = True self.spoiler = Spoiler(self) def intialize_regions(self): for region in self.regions: region.world = self def get_region(self, regionname): if isinstance(regionname, Region): return regionname try: return self._region_cache[regionname] except KeyError: for region in self.regions: if region.name == regionname: self._region_cache[regionname] = region return region raise RuntimeError('No such region %s' % regionname) def get_entrance(self, entrance): if isinstance(entrance, Entrance): return entrance try: return self._entrance_cache[entrance] except KeyError: for region in self.regions: for exit in region.exits: if exit.name == entrance: self._entrance_cache[entrance] = exit return exit raise RuntimeError('No such entrance %s' % entrance) def get_location(self, location): if isinstance(location, Location): return location try: return self._location_cache[location] except KeyError: for region in self.regions: for r_location in region.locations: if r_location.name == location: self._location_cache[location] = r_location return r_location raise RuntimeError('No such location %s' % location) def get_all_state(self, keys=False): ret = CollectionState(self) def soft_collect(item): if item.name.startswith('Progressive '): if 'Sword' in item.name: if ret.has('Golden Sword'): pass elif ret.has('Tempered Sword') and self.difficulty_requirements.progressive_sword_limit >= 4: ret.prog_items.append('Golden Sword') elif ret.has('Master Sword') and self.difficulty_requirements.progressive_sword_limit >= 3: ret.prog_items.append('Tempered Sword') elif ret.has('Fighter Sword') and self.difficulty_requirements.progressive_sword_limit >= 2: ret.prog_items.append('Master Sword') elif self.difficulty_requirements.progressive_sword_limit >= 1: ret.prog_items.append('Fighter Sword') elif 'Glove' in item.name: if ret.has('Titans Mitts'): pass elif ret.has('Power Glove'): ret.prog_items.append('Titans Mitts') else: ret.prog_items.append('Power Glove') elif 'Shield' in item.name: if ret.has('Mirror Shield'): pass elif ret.has('Red Shield') and self.difficulty_requirements.progressive_shield_limit >= 3: ret.prog_items.append('Mirror Shield') elif ret.has('Blue Shield') and self.difficulty_requirements.progressive_shield_limit >= 2: ret.prog_items.append('Red Shield') elif self.difficulty_requirements.progressive_shield_limit >= 1: ret.prog_items.append('Blue Shield') elif item.name.startswith('Bottle'): if ret.bottle_count() < self.difficulty_requirements.progressive_bottle_limit: ret.prog_items.append(item.name) elif item.advancement or item.key: ret.prog_items.append(item.name) for item in self.itempool: soft_collect(item) if keys: from Items import ItemFactory for item in ItemFactory(['Small Key (Escape)', 'Big Key (Eastern Palace)', 'Big Key (Desert Palace)', 'Small Key (Desert Palace)', 'Big Key (Tower of Hera)', 'Small Key (Tower of Hera)', 'Small Key (Agahnims Tower)', 'Small Key (Agahnims Tower)', 'Big Key (Palace of Darkness)'] + ['Small Key (Palace of Darkness)'] * 6 + ['Big Key (Thieves Town)', 'Small Key (Thieves Town)', 'Big Key (Skull Woods)'] + ['Small Key (Skull Woods)'] * 3 + ['Big Key (Swamp Palace)', 'Small Key (Swamp Palace)', 'Big Key (Ice Palace)'] + ['Small Key (Ice Palace)'] * 2 + ['Big Key (Misery Mire)', 'Big Key (Turtle Rock)', 'Big Key (Ganons Tower)'] + ['Small Key (Misery Mire)'] * 3 + ['Small Key (Turtle Rock)'] * 4 + ['Small Key (Ganons Tower)'] * 4): soft_collect(item) ret.sweep_for_events() ret.clear_cached_unreachable() return ret def get_items(self): return [loc.item for loc in self.get_filled_locations()] + self.itempool def find_items(self, item): return [location for location in self.get_locations() if location.item is not None and location.item.name == item] def push_item(self, location, item, collect=True): if not isinstance(location, Location): location = self.get_location(location) if location.can_fill(self.state, item, False): location.item = item item.location = location if collect: self.state.collect(item, location.event, location) logging.getLogger('').debug('Placed %s at %s', item, location) else: raise RuntimeError('Cannot assign item %s to location %s.' % (item, location)) def get_locations(self): if self._cached_locations is None: self._cached_locations = [] for region in self.regions: self._cached_locations.extend(region.locations) return self._cached_locations def get_unfilled_locations(self): return [location for location in self.get_locations() if location.item is None] def get_filled_locations(self): return [location for location in self.get_locations() if location.item is not None] def get_reachable_locations(self, state=None): if state is None: state = self.state return [location for location in self.get_locations() if state.can_reach(location)] def get_placeable_locations(self, state=None): if state is None: state = self.state return [location for location in self.get_locations() if location.item is None and state.can_reach(location)] def unlocks_new_location(self, item): temp_state = self.state.copy() temp_state.clear_cached_unreachable() temp_state.collect(item, True) for location in self.get_unfilled_locations(): if temp_state.can_reach(location) and not self.state.can_reach(location): return True return False def has_beaten_game(self, state): if state.has('Triforce'): return True if self.goal in ['triforcehunt']: if state.item_count('Triforce Piece') + state.item_count('Power Star') > self.treasure_hunt_count: return True return False def can_beat_game(self, starting_state=None): if starting_state: state = starting_state.copy() else: state = CollectionState(self) if self.has_beaten_game(state): return True prog_locations = [location for location in self.get_locations() if location.item is not None and (location.item.advancement or location.event) and location not in state.locations_checked] treasure_pieces_collected = state.item_count('Triforce Piece') + state.item_count('Power Star') while prog_locations: sphere = [] # build up spheres of collection radius. Everything in each sphere is independent from each other in dependencies and only depends on lower spheres for location in prog_locations: if state.can_reach(location): if location.item.name == 'Triforce': return True elif location.item.name in ['Triforce Piece', 'Power Star']: treasure_pieces_collected += 1 if self.goal in ['triforcehunt'] and treasure_pieces_collected >= self.treasure_hunt_count: return True sphere.append(location) if not sphere: # ran out of places and did not find triforce yet, quit return False for location in sphere: prog_locations.remove(location) state.collect(location.item, True, location) return False @property def option_identifier(self): logic = 0 if self.logic == 'noglitches' else 1 mode = ['standard', 'open', 'swordless'].index(self.mode) dungeonitems = 0 if self.place_dungeon_items else 1 goal = ['ganon', 'pedestal', 'dungeons', 'triforcehunt', 'crystals'].index(self.goal) shuffle = ['vanilla', 'simple', 'restricted', 'full', 'madness', 'insanity', 'dungeonsfull', 'dungeonssimple'].index(self.shuffle) difficulty = ['easy', 'normal', 'hard', 'expert', 'insane'].index(self.difficulty) timer = ['none', 'display', 'timed', 'timed-ohko', 'timed-countdown', 'ohko'].index(self.timer) progressive = ['on', 'off', 'random'].index(self.progressive) algorithm = ['freshness', 'flood', 'vt21', 'vt22', 'vt25', 'vt26', 'balanced'].index(self.algorithm) beatableonly = 1 if self.check_beatable_only else 0 shuffleganon = 1 if self.shuffle_ganon else 0 keysanity = 1 if self.keysanity else 0 return logic | (beatableonly << 1) | (dungeonitems << 2) | (shuffleganon << 3) | (goal << 4) | (shuffle << 7) | (difficulty << 11) | (algorithm << 13) | (mode << 16) | (keysanity << 18) | (timer << 19) | (progressive << 21) class CollectionState(object): def __init__(self, parent): self.prog_items = [] self.world = parent self.region_cache = {} self.location_cache = {} self.entrance_cache = {} self.recursion_count = 0 self.events = [] self.path = {} self.locations_checked = set() def clear_cached_unreachable(self): # we only need to invalidate results which were False, places we could reach before we can still reach after adding more items self.region_cache = {k: v for k, v in self.region_cache.items() if v} self.location_cache = {k: v for k, v in self.location_cache.items() if v} self.entrance_cache = {k: v for k, v in self.entrance_cache.items() if v} def copy(self): ret = CollectionState(self.world) ret.prog_items = copy.copy(self.prog_items) ret.region_cache = copy.copy(self.region_cache) ret.location_cache = copy.copy(self.location_cache) ret.entrance_cache = copy.copy(self.entrance_cache) ret.events = copy.copy(self.events) ret.path = copy.copy(self.path) ret.locations_checked = copy.copy(self.locations_checked) return ret def can_reach(self, spot, resolution_hint=None): try: spot_type = spot.spot_type if spot_type == 'Location': correct_cache = self.location_cache elif spot_type == 'Region': correct_cache = self.region_cache elif spot_type == 'Entrance': correct_cache = self.entrance_cache else: raise AttributeError except AttributeError: # try to resolve a name if resolution_hint == 'Location': spot = self.world.get_location(spot) correct_cache = self.location_cache elif resolution_hint == 'Entrance': spot = self.world.get_entrance(spot) correct_cache = self.entrance_cache else: # default to Region spot = self.world.get_region(spot) correct_cache = self.region_cache if spot.recursion_count > 0: return False if spot not in correct_cache: # for the purpose of evaluating results, recursion is resolved by always denying recursive access (as that ia what we are trying to figure out right now in the first place spot.recursion_count += 1 self.recursion_count += 1 can_reach = spot.can_reach(self) spot.recursion_count -= 1 self.recursion_count -= 1 # we only store qualified false results (i.e. ones not inside a hypothetical) if not can_reach: if self.recursion_count == 0: correct_cache[spot] = can_reach else: correct_cache[spot] = can_reach return can_reach return correct_cache[spot] def sweep_for_events(self, key_only=False): # this may need improvement new_locations = True checked_locations = 0 while new_locations: reachable_events = [location for location in self.world.get_filled_locations() if location.event and (not key_only or location.item.key) and self.can_reach(location)] for event in reachable_events: if event.name not in self.events: self.events.append(event.name) self.collect(event.item, True, event) new_locations = len(reachable_events) > checked_locations checked_locations = len(reachable_events) def has(self, item, count=1): if count == 1: return item in self.prog_items return self.item_count(item) >= count def item_count(self, item): return len([pritem for pritem in self.prog_items if pritem == item]) def can_lift_rocks(self): return self.has('Power Glove') or self.has('Titans Mitts') def has_bottle(self): return self.bottle_count() > 0 def bottle_count(self): return len([pritem for pritem in self.prog_items if pritem.startswith('Bottle')]) def has_hearts(self, count): # Warning: This oncly considers items that are marked as advancement items return self.heart_count() >= count def heart_count(self): # Warning: This oncly considers items that are marked as advancement items return ( self.item_count('Boss Heart Container') + self.item_count('Sanctuary Heart Container') + self.item_count('Piece of Heart') // 4 + 3 # starting hearts ) def can_lift_heavy_rocks(self): return self.has('Titans Mitts') def can_extend_magic(self, smallmagic=8, fullrefill=False): #This reflects the total magic Link has, not the total extra he has. basemagic = 8 if self.has('Quarter Magic'): basemagic = 32 elif self.has('Half Magic'): basemagic = 16 if self.world.difficulty == 'hard' and fullrefill == False: basemagic = basemagic + int(basemagic * 0.5 * self.bottle_count()) elif self.world.difficulty == 'expert' and fullrefill == False: basemagic = basemagic + int(basemagic * 0.25 * self.bottle_count()) elif self.world.difficulty == 'insane' and fullrefill == False: basemagic = basemagic else: basemagic = basemagic + basemagic * self.bottle_count() return basemagic >= smallmagic # FIXME bottle should really also have a requirement that we can reach some shop that sells green or blue potions def can_kill_most_things(self, enemies=5): return (self.has_blunt_weapon() or self.has('Cane of Somaria') or (self.has('Cane of Byrna') and (enemies < 6 or self.can_extend_Magic())) or self.has('Bow') or self.has('Fire Rod') ) def has_sword(self): return self.has('Fighter Sword') or self.has('Master Sword') or self.has('Tempered Sword') or self.has('Golden Sword') def has_beam_sword(self): return self.has('Master Sword') or self.has('Tempered Sword') or self.has('Golden Sword') def has_blunt_weapon(self): return self.has_sword() or self.has('Hammer') def has_Mirror(self): return self.has('Magic Mirror') def has_Boots(self): return self.has('Pegasus Boots') def has_Pearl(self): return self.has('Moon Pearl') def has_fire_source(self): return self.has('Fire Rod') or self.has('Lamp') def has_misery_mire_medallion(self): return self.has(self.world.required_medallions[0]) def has_turtle_rock_medallion(self): return self.has(self.world.required_medallions[1]) def collect(self, item, event=False, location=None): if location: self.locations_checked.add(location) changed = False if item.name.startswith('Progressive '): if 'Sword' in item.name: if self.has('Golden Sword'): pass elif self.has('Tempered Sword') and self.world.difficulty_requirements.progressive_sword_limit >= 4: self.prog_items.append('Golden Sword') changed = True elif self.has('Master Sword') and self.world.difficulty_requirements.progressive_sword_limit >= 3: self.prog_items.append('Tempered Sword') changed = True elif self.has('Fighter Sword') and self.world.difficulty_requirements.progressive_sword_limit >= 2: self.prog_items.append('Master Sword') changed = True elif self.world.difficulty_requirements.progressive_sword_limit >= 1: self.prog_items.append('Fighter Sword') changed = True elif 'Glove' in item.name: if self.has('Titans Mitts'): pass elif self.has('Power Glove'): self.prog_items.append('Titans Mitts') changed = True else: self.prog_items.append('Power Glove') changed = True elif 'Shield' in item.name: if self.has('Mirror Shield'): pass elif self.has('Red Shield') and self.world.difficulty_requirements.progressive_shield_limit >= 3: self.prog_items.append('Mirror Shield') changed = True elif self.has('Blue Shield') and self.world.difficulty_requirements.progressive_shield_limit >= 2: self.prog_items.append('Red Shield') changed = True elif self.world.difficulty_requirements.progressive_shield_limit >= 1: self.prog_items.append('Blue Shield') changed = True elif item.name.startswith('Bottle'): if self.bottle_count() < self.world.difficulty_requirements.progressive_bottle_limit: self.prog_items.append(item.name) changed = True elif event or item.advancement: self.prog_items.append(item.name) changed = True if changed: self.clear_cached_unreachable() if not event: self.sweep_for_events() self.clear_cached_unreachable() def remove(self, item): if item.advancement: to_remove = item.name if to_remove.startswith('Progressive '): if 'Sword' in to_remove: if self.has('Golden Sword'): to_remove = 'Golden Sword' elif self.has('Tempered Sword'): to_remove = 'Tempered Sword' elif self.has('Master Sword'): to_remove = 'Master Sword' elif self.has('Fighter Sword'): to_remove = 'Fighter Sword' else: to_remove = None elif 'Glove' in item.name: if self.has('Titans Mitts'): to_remove = 'Titans Mitts' elif self.has('Power Glove'): to_remove = 'Power Glove' else: to_remove = None if to_remove is not None: try: self.prog_items.remove(to_remove) except ValueError: return # invalidate caches, nothing can be trusted anymore now self.region_cache = {} self.location_cache = {} self.entrance_cache = {} self.recursion_count = 0 def __getattr__(self, item): if item.startswith('can_reach_'): return self.can_reach(item[10]) elif item.startswith('has_'): return self.has(item[4]) raise RuntimeError('Cannot parse %s.' % item) class Region(object): def __init__(self, name): self.name = name self.entrances = [] self.exits = [] self.locations = [] self.dungeon = None self.world = None self.is_light_world = False # will be set aftermaking connections. self.spot_type = 'Region' self.hint_text = 'Hyrule' self.recursion_count = 0 def can_reach(self, state): for entrance in self.entrances: if state.can_reach(entrance): if not self in state.path: state.path[self] = (self.name, state.path.get(entrance, None)) return True return False def can_fill(self, item): is_dungeon_item = item.key or item.map or item.compass sewer_hack = self.world.mode == 'standard' and item.name == 'Small Key (Escape)' if sewer_hack or (is_dungeon_item and not self.world.keysanity): return self.dungeon and self.dungeon.is_dungeon_item(item) return True def __str__(self): return str(self.__unicode__()) def __unicode__(self): return '%s' % self.name class Entrance(object): def __init__(self, name='', parent=None): self.name = name self.parent_region = parent self.connected_region = None self.target = None self.addresses = None self.spot_type = 'Entrance' self.recursion_count = 0 self.vanilla = None self.access_rule = lambda state: True def can_reach(self, state): if self.access_rule(state) and state.can_reach(self.parent_region): if not self in state.path: state.path[self] = (self.name, state.path.get(self.parent_region, (self.parent_region.name, None))) return True return False def connect(self, region, addresses=None, target=None, vanilla=None): self.connected_region = region self.target = target self.addresses = addresses self.vanilla = vanilla region.entrances.append(self) def __str__(self): return str(self.__unicode__()) def __unicode__(self): return '%s' % self.name class Dungeon(object): def __init__(self, name, regions, big_key, small_keys, dungeon_items): self.name = name self.regions = regions self.big_key = big_key self.small_keys = small_keys self.dungeon_items = dungeon_items @property def keys(self): return self.small_keys + ([self.big_key] if self.big_key else []) @property def all_items(self): return self.dungeon_items + self.keys def is_dungeon_item(self, item): return item.name in [dungeon_item.name for dungeon_item in self.all_items] def __str__(self): return str(self.__unicode__()) def __unicode__(self): return '%s' % self.name class Location(object): def __init__(self, name='', address=None, crystal=False, hint_text=None, parent=None): self.name = name self.parent_region = parent self.item = None self.crystal = crystal self.address = address self.spot_type = 'Location' self.hint_text = hint_text if hint_text is not None else 'Hyrule' self.recursion_count = 0 self.staleness_count = 0 self.event = False self.always_allow = lambda item, state: False self.access_rule = lambda state: True self.item_rule = lambda item: True def can_fill(self, state, item, check_access=True): return self.always_allow(item, self) or (self.parent_region.can_fill(item) and self.item_rule(item) and (not check_access or self.can_reach(state))) def can_reach(self, state): if self.access_rule(state) and state.can_reach(self.parent_region): return True return False def __str__(self): return str(self.__unicode__()) def __unicode__(self): return '%s' % self.name class Item(object): def __init__(self, name='', advancement=False, priority=False, type=None, code=None, pedestal_hint=None, pedestal_credit=None, sickkid_credit=None, zora_credit=None, witch_credit=None, fluteboy_credit=None): self.name = name self.advancement = advancement self.priority = priority self.type = type self.pedestal_hint_text = pedestal_hint self.pedestal_credit_text = pedestal_credit self.sickkid_credit_text = sickkid_credit self.zora_credit_text = zora_credit self.magicshop_credit_text = witch_credit self.fluteboy_credit_text = fluteboy_credit self.code = code self.location = None @property def key(self): return self.type == 'SmallKey' or self.type == 'BigKey' @property def crystal(self): return self.type == 'Crystal' @property def map(self): return self.type == 'Map' @property def compass(self): return self.type == 'Compass' def __str__(self): return str(self.__unicode__()) def __unicode__(self): return '%s' % self.name # have 6 address that need to be filled class Crystal(Item): pass class Spoiler(object): def __init__(self, world): self.world = world self.entrances = [] self.medallions = {} self.playthrough = {} self.locations = {} self.paths = {} self.metadata = {} def set_entrance(self, entrance, exit, direction): self.entrances.append(OrderedDict([('entrance', entrance), ('exit', exit), ('direction', direction)])) def parse_data(self): self.medallions = OrderedDict([('Misery Mire', self.world.required_medallions[0]), ('Turtle Rock', self.world.required_medallions[1])]) self.locations = {'other locations': OrderedDict([(str(location), str(location.item) if location.item is not None else 'Nothing') for location in self.world.get_locations()])} from Main import __version__ as ERVersion self.metadata = {'version': ERVersion, 'seed': self.world.seed, 'logic': self.world.logic, 'mode': self.world.mode, 'goal': self.world.goal, 'shuffle': self.world.shuffle, 'algorithm': self.world.algorithm, 'difficulty': self.world.difficulty, 'timer': self.world.timer, 'progressive': self.world.progressive, 'completeable': not self.world.check_beatable_only, 'dungeonitems': self.world.place_dungeon_items, 'quickswap': self.world.quickswap, 'fastmenu': self.world.fastmenu, 'disable_music': self.world.disable_music, 'keysanity': self.world.keysanity} def to_json(self): self.parse_data() out = OrderedDict() out['entrances'] = self.entrances out.update(self.locations) out['medallions'] = self.medallions out['playthrough'] = self.playthrough out['paths'] = self.paths out['meta'] = self.metadata return json.dumps(out) def to_file(self, filename): self.parse_data() with open(filename, 'w') as outfile: outfile.write('ALttP Entrance Randomizer Version %s - Seed: %s\n\n' % (self.metadata['version'], self.metadata['seed'])) outfile.write('Logic: %s\n' % self.metadata['logic']) outfile.write('Mode: %s\n' % self.metadata['mode']) outfile.write('Goal: %s\n' % self.metadata['goal']) outfile.write('Entrance Shuffle: %s\n' % self.metadata['shuffle']) outfile.write('Filling Algorithm: %s\n' % self.metadata['algorithm']) outfile.write('All Locations Accessible: %s\n' % ('Yes' if self.metadata['completeable'] else 'No, some locations may be unreachable')) outfile.write('Maps and Compasses in Dungeons: %s\n' % ('Yes' if self.metadata['dungeonitems'] else 'No')) outfile.write('L\\R Quickswap enabled: %s\n' % ('Yes' if self.metadata['quickswap'] else 'No')) outfile.write('Menu speed: %s\n' % self.metadata['fastmenu']) outfile.write('Keysanity enabled: %s' % ('Yes' if self.metadata['keysanity'] else 'No')) if self.entrances: outfile.write('\n\nEntrances:\n\n') outfile.write('\n'.join(['%s %s %s' % (entry['entrance'], '<=>' if entry['direction'] == 'both' else '<=' if entry['direction'] == 'exit' else '=>', entry['exit']) for entry in self.entrances])) outfile.write('\n\nMedallions') outfile.write('\n\nMisery Mire Medallion: %s' % self.medallions['Misery Mire']) outfile.write('\nTurtle Rock Medallion: %s' % self.medallions['Turtle Rock']) outfile.write('\n\nLocations:\n\n') outfile.write('\n'.join(['%s: %s' % (location, item) for (location, item) in self.locations['other locations'].items()])) outfile.write('\n\nPlaythrough:\n\n') outfile.write('\n'.join(['%s: {\n%s\n}' % (sphere_nr, '\n'.join([' %s: %s' % (location, item) for (location, item) in sphere.items()])) for (sphere_nr, sphere) in self.playthrough.items()])) outfile.write('\n\nPaths:\n\n') path_listings = [] for location, path in sorted(self.paths.items()): path_lines = [] for region, exit in path: if exit is not None: path_lines.append("{} -> {}".format(region, exit)) else: path_lines.append(region) path_listings.append("{}\n {}".format(location, "\n => ".join(path_lines))) outfile.write('\n'.join(path_listings))