import bisect
import io
import itertools
import json
import hashlib
import logging
import os
import random
import struct
import sys
import subprocess
import bps.apply
import bps.io

from BaseClasses import CollectionState, ShopType, Region, Location, OWEdge, Door, DoorType, RegionType, PotItem
from DoorShuffle import compass_data, DROptions, boss_indicator
from Dungeons import dungeon_music_addresses
from KeyDoorShuffle import count_locations_exclude_logic
from Regions import location_table, shop_to_location_table, retro_shops
from RoomData import DoorKind
from Text import MultiByteTextMapper, CompressedTextMapper, text_addresses, Credits, TextTable
from Text import Uncle_texts, Ganon1_texts, TavernMan_texts, Sahasrahla2_texts, Triforce_texts, Blind_texts, BombShop2_texts, junk_texts
from Text import KingsReturn_texts, Sanctuary_texts, Kakariko_texts, Blacksmiths_texts, DeathMountain_texts, LostWoods_texts, WishingWell_texts, DesertPalace_texts, MountainTower_texts, LinksHouse_texts, Lumberjacks_texts, SickKid_texts, FluteBoy_texts, Zora_texts, MagicShop_texts, Sahasrahla_names
from Utils import output_path, local_path, int16_as_bytes, int32_as_bytes, snes_to_pc
from Items import ItemFactory
from EntranceShuffle import door_addresses, exit_ids


JAP10HASH = '03a63945398191337e896e5771f77173'
RANDOMIZERBASEHASH = '35a3f01c05c95b6a420f9bd6220c56a2'


class JsonRom(object):

    def __init__(self, name=None, hash=None):
        self.name = name
        self.hash = hash
        self.orig_buffer = None
        self.patches = {}
        self.addresses = []

    def write_byte(self, address, value):
        self.write_bytes(address, [value])

    def write_bytes(self, startaddress, values):
        if not values:
            return
        values = list(values)

        pos = bisect.bisect_right(self.addresses, startaddress)
        intervalstart = self.addresses[pos-1] if pos else None
        intervalpatch = self.patches[str(intervalstart)] if pos else None

        if pos and startaddress <= intervalstart + len(intervalpatch): # merge with previous segment
            offset = startaddress - intervalstart
            intervalpatch[offset:offset+len(values)] = values
            startaddress = intervalstart
            values = intervalpatch
        else: # new segment
            self.addresses.insert(pos, startaddress)
            self.patches[str(startaddress)] = values
            pos = pos + 1

        while pos < len(self.addresses) and self.addresses[pos] <= startaddress + len(values): # merge the next segment into this one
            intervalstart = self.addresses[pos]
            values.extend(self.patches[str(intervalstart)][startaddress+len(values)-intervalstart:])
            del self.patches[str(intervalstart)]
            del self.addresses[pos]

    def write_to_file(self, file):
        with open(file, 'w') as stream:
            json.dump([self.patches], stream)

    def get_hash(self):
        h = hashlib.md5()
        h.update(json.dumps([self.patches]).encode('utf-8'))
        return h.hexdigest()


class LocalRom(object):

    def __init__(self, file, patch=True, name=None, hash=None):
        self.name = name
        self.hash = hash
        self.orig_buffer = None
        if not os.path.isfile(file):
            raise RuntimeError("Could not find valid local base rom for patching at expected path %s." % file)
        with open(file, 'rb') as stream:
            self.buffer = read_rom(stream)
        if patch:
            self.patch_base_rom()
            self.orig_buffer = self.buffer.copy()

    def write_byte(self, address, value):
        self.buffer[address] = value

    def write_bytes(self, startaddress, values):
        for i, value in enumerate(values):
            self.write_byte(startaddress + i, value)

    def write_to_file(self, file):
        with open(file, 'wb') as outfile:
            outfile.write(self.buffer)

    @staticmethod
    def fromJsonRom(rom, file, rom_size = 0x200000):
        ret = LocalRom(file, True, rom.name, rom.hash)
        ret.buffer.extend(bytearray([0x00] * (rom_size - len(ret.buffer))))
        for address, values in rom.patches.items():
            ret.write_bytes(int(address), values)
        return ret

    def patch_base_rom(self):
        # verify correct checksum of baserom
        basemd5 = hashlib.md5()
        basemd5.update(self.buffer)
        if JAP10HASH != basemd5.hexdigest():
            logging.getLogger('').warning('Supplied Base Rom does not match known MD5 for JAP(1.0) release. Will try to patch anyway.')

        orig_buffer = self.buffer.copy()

        # extend to 2MB
        self.buffer.extend(bytearray([0x00] * (0x200000 - len(self.buffer))))

        # load randomizer patches
        with open(local_path('data/base2current.bps'), 'rb') as stream:
            bps.apply.apply_to_bytearrays(bps.io.read_bps(stream), orig_buffer, self.buffer)

        self.create_json_patch(orig_buffer)

        # verify md5
        patchedmd5 = hashlib.md5()
        patchedmd5.update(self.buffer)
        if RANDOMIZERBASEHASH != patchedmd5.hexdigest():
            raise RuntimeError('Provided Base Rom unsuitable for patching. Please provide a JAP(1.0) "Zelda no Densetsu - Kamigami no Triforce (Japan).sfc" rom to use as a base.')

    def create_json_patch(self, orig_buffer):
        # extend to 2MB
        orig_buffer.extend(bytearray([0x00] * (len(self.buffer) - len(orig_buffer))))

        i = 0
        patches = []

        while i < len(self.buffer):
            if self.buffer[i] == orig_buffer[i]:
                i += 1
                continue

            patch_start = i
            patch_contents = []
            while self.buffer[i] != orig_buffer[i]:
                patch_contents.append(self.buffer[i])
                i += 1
            patches.append({patch_start: patch_contents})

        with open(local_path('data/base2current.json'), 'w') as fp:
            json.dump(patches, fp, separators=(',', ':'))


    def write_crc(self):
        crc = (sum(self.buffer[:0x7FDC] + self.buffer[0x7FE0:]) + 0x01FE) & 0xFFFF
        inv = crc ^ 0xFFFF
        self.write_bytes(0x7FDC, [inv & 0xFF, (inv >> 8) & 0xFF, crc & 0xFF, (crc >> 8) & 0xFF])

    def get_hash(self):
        h = hashlib.md5()
        h.update(self.buffer)
        return h.hexdigest()

def write_int16(rom, address, value):
    rom.write_bytes(address, int16_as_bytes(value))

def write_int32(rom, address, value):
    rom.write_bytes(address, int32_as_bytes(value))

def write_int16s(rom,  startaddress, values):
    for i, value in enumerate(values):
        write_int16(rom, startaddress + (i * 2), value)

def write_int32s(rom, startaddress, values):
    for i, value in enumerate(values):
        write_int32(rom, startaddress + (i * 4), value)

def read_rom(stream):
    "Reads rom into bytearray and strips off any smc header"
    buffer = bytearray(stream.read())
    if len(buffer)%0x400 == 0x200:
        buffer = buffer[0x200:]
    return buffer

def patch_enemizer(world, player, rom, baserom_path, enemizercli, random_sprite_on_hit):
    baserom_path = os.path.abspath(baserom_path)
    basepatch_path = os.path.abspath(local_path(os.path.join("data","base2current.json")))
    enemizer_basepatch_path = os.path.join(os.path.dirname(enemizercli), "enemizerBasePatch.json")
    randopatch_path = os.path.abspath(output_path('enemizer_randopatch.json'))
    options_path = os.path.abspath(output_path('enemizer_options.json'))
    enemizer_output_path = os.path.abspath(output_path('enemizer_output.json'))

    # write options file for enemizer
    options = {
        'RandomizeEnemies': world.enemy_shuffle[player] != 'none',
        'RandomizeEnemiesType': 3,
        'RandomizeBushEnemyChance': world.enemy_shuffle[player] == 'random',
        'RandomizeEnemyHealthRange': world.enemy_health[player] != 'default',
        'RandomizeEnemyHealthType': {'default': 0, 'easy': 0, 'normal': 1, 'hard': 2, 'expert': 3}[world.enemy_health[player]],
        'OHKO': False,
        'RandomizeEnemyDamage': world.enemy_damage[player] != 'default',
        'AllowEnemyZeroDamage': True,
        'ShuffleEnemyDamageGroups': world.enemy_damage[player] != 'default',
        'EnemyDamageChaosMode': world.enemy_damage[player] == 'random',
        'EasyModeEscape': False,
        'EnemiesAbsorbable': False,
        'AbsorbableSpawnRate': 10,
        'AbsorbableTypes': {
            'FullMagic': True, 'SmallMagic': True, 'Bomb_1': True, 'BlueRupee': True, 'Heart': True, 'BigKey': True, 'Key': True,
            'Fairy': True, 'Arrow_10': True, 'Arrow_5': True, 'Bomb_8': True, 'Bomb_4': True, 'GreenRupee': True, 'RedRupee': True
        },
        'BossMadness': False,
        'RandomizeBosses': True,
        'RandomizeBossesType': 0,
        'RandomizeBossHealth': False,
        'RandomizeBossHealthMinAmount': 0,
        'RandomizeBossHealthMaxAmount': 300,
        'RandomizeBossDamage': False,
        'RandomizeBossDamageMinAmount': 0,
        'RandomizeBossDamageMaxAmount': 200,
        'RandomizeBossBehavior': False,
        'RandomizeDungeonPalettes': False,
        'SetBlackoutMode': False,
        'RandomizeOverworldPalettes': False,
        'RandomizeSpritePalettes': False,
        'SetAdvancedSpritePalettes': False,
        'PukeMode': False,
        'NegativeMode': False,
        'GrayscaleMode': False,
        'GenerateSpoilers': False,
        'RandomizeLinkSpritePalette': False,
        'RandomizePots': False,
        'ShuffleMusic': False,
        'BootlegMagic': True,
        'CustomBosses': False,
        'AndyMode': False,
        'HeartBeepSpeed': 0,
        'AlternateGfx': False,
        'ShieldGraphics': "shield_gfx/normal.gfx",
        'SwordGraphics': "sword_gfx/normal.gfx",
        'BeeMizer': False,
        'BeesLevel': 0,
        'RandomizeTileTrapPattern': world.enemy_shuffle[player] == 'random',
        'RandomizeTileTrapFloorTile': False,
        'AllowKillableThief': bool(random.randint(0, 1)) if world.enemy_shuffle[player] == 'random' else world.enemy_shuffle[player] != 'none',
        'RandomizeSpriteOnHit': random_sprite_on_hit,
        'DebugMode': False,
        'DebugForceEnemy': False,
        'DebugForceEnemyId': 0,
        'DebugForceBoss': False,
        'DebugForceBossId': 0,
        'DebugOpenShutterDoors': False,
        'DebugForceEnemyDamageZero': False,
        'DebugShowRoomIdInRupeeCounter': False,
        'UseManualBosses': True,
        'ManualBosses': {
            'EasternPalace': world.get_dungeon("Eastern Palace", player).boss.enemizer_name,
            'DesertPalace': world.get_dungeon("Desert Palace", player).boss.enemizer_name,
            'TowerOfHera': world.get_dungeon("Tower of Hera", player).boss.enemizer_name,
            'AgahnimsTower': 'Agahnim',
            'PalaceOfDarkness': world.get_dungeon("Palace of Darkness", player).boss.enemizer_name,
            'SwampPalace': world.get_dungeon("Swamp Palace", player).boss.enemizer_name,
            'SkullWoods': world.get_dungeon("Skull Woods", player).boss.enemizer_name,
            'ThievesTown': world.get_dungeon("Thieves Town", player).boss.enemizer_name,
            'IcePalace': world.get_dungeon("Ice Palace", player).boss.enemizer_name,
            'MiseryMire': world.get_dungeon("Misery Mire", player).boss.enemizer_name,
            'TurtleRock': world.get_dungeon("Turtle Rock", player).boss.enemizer_name,
            'GanonsTower1': [x for x in world.dungeons if x.player == player and 'bottom' in x.bosses.keys()][0].bosses['bottom'].enemizer_name,
            'GanonsTower2': [x for x in world.dungeons if x.player == player and 'middle' in x.bosses.keys()][0].bosses['middle'].enemizer_name,
            'GanonsTower3': [x for x in world.dungeons if x.player == player and 'top' in x.bosses.keys()][0].bosses['top'].enemizer_name,
            'GanonsTower4': 'Agahnim2',
            'Ganon': 'Ganon',
        }
    }

    rom.write_to_file(randopatch_path)

    with open(options_path, 'w') as f:
        json.dump(options, f)

    try:
        subprocess.run([os.path.abspath(enemizercli),
                               '--rom', baserom_path,
                               '--seed', str(world.rom_seeds[player]),
                               '--base', basepatch_path,
                               '--randomizer', randopatch_path,
                               '--enemizer', options_path,
                               '--output', enemizer_output_path],
                              cwd=os.path.dirname(enemizercli),
                              check=True,
                              capture_output=True)
    except subprocess.CalledProcessError as e:
        from Main import EnemizerError
        enemizerMsg  = world.fish.translate("cli","cli","Enemizer returned exit code: ") + str(e.returncode) + "\n"
        enemizerMsg += world.fish.translate("cli","cli","enemizer.nothing.applied")
        logging.error(f'Enemizer error output: {e.stderr.decode("utf-8")}\n')
        raise EnemizerError(enemizerMsg)

    with open(enemizer_basepatch_path, 'r') as f:
        for patch in json.load(f):
            rom.write_bytes(patch["address"], patch["patchData"])

    with open(enemizer_output_path, 'r') as f:
        for patch in json.load(f):
            rom.write_bytes(patch["address"], patch["patchData"])

    if world.get_dungeon("Thieves Town", player).boss.enemizer_name == "Blind":
        rom.write_byte(0x04DE81, 0x6)  # maiden spawn
        # restore blind spawn code - necessary because the old enemizer clobbers this stuff
        # this line could be commented out if ijwu's enemizer is used exclusively
        # if keeping this line, note the jump to the dr_baserom's enemizer section
        rom.write_bytes(0xEA081, [0x5c, 0x00, 0x80, 0xb7, 0xc9, 0x6, 0xf0, 0x24,
                                  0xad, 0x3, 0x4, 0x29, 0x20, 0xf0, 0x1d])
        rom.write_byte(0x200101, 0)  # Do not close boss room door on entry.

    if random_sprite_on_hit:
        _populate_sprite_table()
        sprites = list(_sprite_table.values())
        if sprites:
            while len(sprites) < 32:
                sprites.extend(sprites)
            random.shuffle(sprites)

            for i, path in enumerate(sprites[:32]):
                sprite = Sprite(path)
                rom.write_bytes(0x300000 + (i * 0x8000), sprite.sprite)
                rom.write_bytes(0x307000 + (i * 0x8000), sprite.palette)
                rom.write_bytes(0x307078 + (i * 0x8000), sprite.glove_palette)

    try:
        os.remove(randopatch_path)
    except OSError:
        pass

    try:
        os.remove(options_path)
    except OSError:
        pass

    try:
        os.remove(enemizer_output_path)
    except OSError:
        pass

_sprite_table = {}
def _populate_sprite_table():
    if not _sprite_table:
        for dir in [local_path(os.path.join("data","sprites","official")), local_path(os.path.join("data","sprites","unofficial"))]:
            for file in os.listdir(dir):
                filepath = os.path.join(dir, file)
                if not os.path.isfile(filepath):
                    continue
                sprite = Sprite(filepath)
                if sprite.valid:
                    _sprite_table[sprite.name.lower()] = filepath

def get_sprite_from_name(name):
    _populate_sprite_table()
    name = name.lower()
    if name in ['random', 'randomonhit']:
        return Sprite(random.choice(list(_sprite_table.values())))
    if name == ('(default link)'):
        name = 'link'
    return Sprite(_sprite_table[name]) if name in _sprite_table else None

class Sprite(object):
    default_palette = [255, 127, 126, 35, 183, 17, 158, 54, 165, 20, 255, 1, 120, 16, 157,
                       89, 71, 54, 104, 59, 74, 10, 239, 18, 92, 42, 113, 21, 24, 122,
                       255, 127, 126, 35, 183, 17, 158, 54, 165, 20, 255, 1, 120, 16, 157,
                       89, 128, 105, 145, 118, 184, 38, 127, 67, 92, 42, 153, 17, 24, 122,
                       255, 127, 126, 35, 183, 17, 158, 54, 165, 20, 255, 1, 120, 16, 157,
                       89, 87, 16, 126, 69, 243, 109, 185, 126, 92, 42, 39, 34, 24, 122,
                       255, 127, 126, 35, 218, 17, 158, 54, 165, 20, 255, 1, 120, 16, 151,
                       61, 71, 54, 104, 59, 74, 10, 239, 18, 126, 86, 114, 24, 24, 122]

    default_glove_palette = [246, 82, 118, 3]

    def __init__(self, filename):
        with open(filename, 'rb') as file:
            filedata = bytearray(file.read())
        self.name = os.path.basename(filename)
        self.author_name = None
        self.valid = True
        if len(filedata) == 0x7000:
            # sprite file with graphics and without palette data
            self.sprite = filedata[:0x7000]
            self.palette = list(self.default_palette)
            self.glove_palette = list(self.default_glove_palette)
        elif len(filedata) == 0x7078:
            # sprite file with graphics and palette data
            self.sprite = filedata[:0x7000]
            self.palette = filedata[0x7000:]
            self.glove_palette = filedata[0x7036:0x7038] + filedata[0x7054:0x7056]
        elif len(filedata) == 0x707C:
            # sprite file with graphics and palette data including gloves
            self.sprite = filedata[:0x7000]
            self.palette = filedata[0x7000:0x7078]
            self.glove_palette = filedata[0x7078:]
        elif len(filedata) in [0x100000, 0x200000]:
            # full rom with patched sprite, extract it
            self.sprite = filedata[0x80000:0x87000]
            self.palette = filedata[0xDD308:0xDD380]
            self.glove_palette = filedata[0xDEDF5:0xDEDF9]
        elif filedata.startswith(b'ZSPR'):
            result = self.parse_zspr(filedata, 1)
            if result is None:
                self.valid = False
                return
            (sprite, palette, self.name, self.author_name) = result
            if len(sprite) != 0x7000:
                self.valid = False
                return
            self.sprite = sprite
            if len(palette) == 0:
                self.palette = list(self.default_palette)
                self.glove_palette = list(self.default_glove_palette)
            elif len(palette) == 0x78:
                self.palette = palette
                self.glove_palette = list(self.default_glove_palette)
            elif len(palette) == 0x7C:
                self.palette = palette[:0x78]
                self.glove_palette = palette[0x78:]
            else:
                self.valid = False
        else:
            self.valid = False

    @staticmethod
    def default_link_sprite():
        return get_sprite_from_name('Link')

    def decode8(self, pos):
        arr = [[0 for _ in range(8)] for _ in range(8)]
        for y in range(8):
            for x in range(8):
                position = 1<<(7-x)
                val = 0
                if self.sprite[pos+2*y] & position:
                    val += 1
                if self.sprite[pos+2*y+1] & position:
                    val += 2
                if self.sprite[pos+2*y+16] & position:
                    val += 4
                if self.sprite[pos+2*y+17] & position:
                    val += 8
                arr[y][x] = val
        return arr

    def decode16(self, pos):
        arr = [[0 for _ in range(16)] for _ in range(16)]
        top_left = self.decode8(pos)
        top_right = self.decode8(pos+0x20)
        bottom_left = self.decode8(pos+0x200)
        bottom_right = self.decode8(pos+0x220)
        for x in range(8):
            for y in range(8):
                arr[y][x] = top_left[y][x]
                arr[y][x+8] = top_right[y][x]
                arr[y+8][x] = bottom_left[y][x]
                arr[y+8][x+8] = bottom_right[y][x]
        return arr

    def parse_zspr(self, filedata, expected_kind):
        logger = logging.getLogger('')
        headerstr = "<4xBHHIHIHH6x"
        headersize = struct.calcsize(headerstr)
        if len(filedata) < headersize:
            return None
        (version, csum, icsum, sprite_offset, sprite_size, palette_offset, palette_size, kind) = struct.unpack_from(headerstr, filedata)
        if version not in [1]:
            logger.error('Error parsing ZSPR file: Version %g not supported', version)
            return None
        if kind != expected_kind:
            return None

        stream = io.BytesIO(filedata)
        stream.seek(headersize)

        def read_utf16le(stream):
            "Decodes a null-terminated UTF-16_LE string of unknown size from a stream"
            raw = bytearray()
            while True:
                char = stream.read(2)
                if char in [b'', b'\x00\x00']:
                    break
                raw += char
            return raw.decode('utf-16_le')

        sprite_name = read_utf16le(stream)
        author_name = read_utf16le(stream)

        # Ignoring the Author Rom name for the time being.

        real_csum = sum(filedata) % 0x10000
        if real_csum != csum or real_csum ^ 0xFFFF != icsum:
            logger.warning('ZSPR file has incorrect checksum. It may be corrupted.')

        sprite = filedata[sprite_offset:sprite_offset + sprite_size]
        palette = filedata[palette_offset:palette_offset + palette_size]

        if len(sprite) != sprite_size or len(palette) != palette_size:
            logger.error('Error parsing ZSPR file: Unexpected end of file')
            return None

        return (sprite, palette, sprite_name, author_name)

    def decode_palette(self):
        "Returns the palettes as an array of arrays of 15 colors"
        def array_chunk(arr, size):
            return list(zip(*[iter(arr)] * size))
        def make_int16(pair):
            return pair[1]<<8 | pair[0]
        def expand_color(i):
            return ((i & 0x1F) * 8, (i>>5 & 0x1F) * 8, (i>>10 & 0x1F) * 8)
        raw_palette = self.palette
        if raw_palette is None:
            raw_palette = Sprite.default_palette
        # turn palette data into a list of RGB tuples with 8 bit values
        palette_as_colors = [expand_color(make_int16(chnk)) for chnk in array_chunk(raw_palette, 2)]

        # split into palettes of 15 colors
        return array_chunk(palette_as_colors, 15)


def patch_rom(world, rom, player, team, enemized, is_mystery=False):
    random.seed(world.rom_seeds[player])

    # progressive bow silver arrow hint hack
    prog_bow_locs = world.find_items('Progressive Bow', player)
    if len(prog_bow_locs) > 1:
        # only pick a distingushed bow if we have at least two
        distinguished_prog_bow_loc = random.choice(prog_bow_locs)
        distinguished_prog_bow_loc.item.code = 0x65

    # patch items
    for location in world.get_locations():
        if location.player != player:
            continue

        itemid = location.item.code if location.item is not None else 0x5A

        if location.address is None or (type(location.address) is int and location.address >= 0x400000):
            continue

        if not location.crystal:
            if location.item is not None:
                # Keys in their native dungeon should use the original item code for keys
                if location.parent_region.dungeon:
                    if location.parent_region.dungeon.is_dungeon_item(location.item):
                        if location.item.bigkey:
                            itemid = 0x32
                        if location.item.smallkey:
                            itemid = 0x24
                        if location.item.map:
                            itemid = 0x33
                        if location.item.compass:
                            itemid = 0x25
                if world.remote_items[player]:
                    itemid = list(location_table.keys()).index(location.name) + 1
                    assert itemid < 0x100
                    rom.write_byte(location.player_address, 0xFF)
                elif location.item.player != player:
                    if location.player_address is not None:
                        rom.write_byte(location.player_address, location.item.player)
                    else:
                        itemid = 0x5A
            rom.write_byte(location.address, itemid)
        else:
            # crystals
            for address, value in zip(location.address, itemid):
                rom.write_byte(address, value)

            # patch music
            music_addresses = dungeon_music_addresses[location.name]
            if world.mapshuffle[player]:
                music = random.choice([0x11, 0x16])
            else:
                music = 0x11 if 'Pendant' in location.item.name else 0x16
            for music_address in music_addresses:
                rom.write_byte(music_address, music)

    if world.mapshuffle[player]:
        rom.write_byte(0x155C9, random.choice([0x11, 0x16]))  # Randomize GT music too with map shuffle

    if world.pot_contents[player]:
        write_pots_to_rom(rom, world.pot_contents[player])

    # patch overworld edges
    if world.owShuffle[player] != 'vanilla' or world.owSwap[player] != 'vanilla':
        rom.write_byte(0x18004C, 0x01) #patch for allowing Frogsmith to enter multi-entrance caves
        #patches map data specific for OW Shuffle
        rom.buffer[0x153B03] = rom.buffer[0x153B03] | 0x2 #convenient portal on WDM
        rom.buffer[0x153B1A] = rom.buffer[0x153B1A] | 0x2 #rocks added to prevent OWG hardlock
        rom.buffer[0x153B1B] = rom.buffer[0x153B1B] | 0x2 #rocks added to prevent OWG hardlock
        rom.buffer[0x153B22] = rom.buffer[0x153B22] | 0x2 #rocks added to prevent OWG hardlock
        rom.buffer[0x153B3F] = rom.buffer[0x153B3F] | 0x2 #added C to terrain
        rom.buffer[0x153B43] = rom.buffer[0x153B43] | 0x2 #convenient portal on WDDM
        rom.buffer[0x153B5A] = rom.buffer[0x153B5A] | 0x2 #rocks added to prevent OWG hardlock
        rom.buffer[0x153B5B] = rom.buffer[0x153B5B] | 0x2 #rocks added to prevent OWG hardlock
        rom.buffer[0x153B62] = rom.buffer[0x153B62] | 0x2 #rocks added to prevent OWG hardlock
        rom.buffer[0x153B7F] = rom.buffer[0x153B7F] | 0x2 #added C to terrain


        owMode = 0
        if world.owShuffle[player] == 'parallel':
            owMode = 1
        elif world.owShuffle[player] == 'full':
            owMode = 2
        
        if world.owSwap[player] == 'mixed':
            owMode |= 0x100
            world.fix_fake_world[player] = True
        elif world.owSwap[player] == 'crossed':
            owMode |= 0x200
            world.fix_fake_world[player] = True
        
        write_int16(rom, 0x150002, owMode)

        owFlags = 0
        if world.owKeepSimilar[player]:
            owFlags |= 0x1

        write_int16(rom, 0x150004, owFlags)

        if world.owSwap[player] == 'mixed':
            for b in world.owswaps[player][0]:
                # load inverted maps
                v = rom.buffer[0x153B00 + b]
                v = (v & 0xFE) | ((v + 1) % 2)
                rom.buffer[0x153B00 + b] = v

                # set world flag
                v = rom.buffer[0x153A00 + b]
                v = (v & 0xBF) | ((((v >> 6) + 1) % 2) << 6)
                rom.buffer[0x153A00 + b] = v
        
        for edge in world.owedges:
            if edge.dest is not None and isinstance(edge.dest, OWEdge) and edge.player == player:
                write_int16(rom, edge.getAddress() + 0x0a, edge.vramLoc)
                write_int16(rom, edge.getAddress() + 0x0e, edge.getTarget())
    
    # patch entrance/exits/holes
    for region in world.regions:
        for exit in region.exits:
            if exit.target is not None and exit.player == player:
                if isinstance(exit.addresses, tuple):
                    offset = exit.target
                    room_id, ow_area, vram_loc, scroll_y, scroll_x, link_y, link_x, camera_y, camera_x, unknown_1, unknown_2, door_1, door_2 = exit.addresses
                    #room id is deliberately not written


                    rom.write_byte(0x15B8C + offset, ow_area)
                    write_int16(rom, 0x15BDB + 2 * offset, vram_loc)
                    write_int16(rom, 0x15C79 + 2 * offset, scroll_y)
                    write_int16(rom, 0x15D17 + 2 * offset, scroll_x)

                    # for positioning fixups we abuse the roomid as a way of identifying which exit data we are appling
                    # Thanks to Zarby89 for originally finding these values
                    # todo fix screen scrolling

                    if world.shuffle[player] not in ['insanity', 'insanity_legacy', 'madness_legacy'] and \
                            exit.name in ['Eastern Palace Exit', 'Tower of Hera Exit', 'Thieves Town Exit', 'Ice Palace Exit', 'Misery Mire Exit',
                                          'Palace of Darkness Exit', 'Swamp Palace Exit', 'Ganons Tower Exit', 'Desert Palace Exit (North)', 'Agahnims Tower Exit', 'Spiral Cave Exit (Top)',
                                          'Superbunny Cave Exit (Bottom)', 'Turtle Rock Ledge Exit (East)']:
                        # For exits that connot be reached from another, no need to apply offset fixes.
                        write_int16(rom, 0x15DB5 + 2 * offset, link_y) # same as final else
                    elif room_id == 0x0059 and world.fix_skullwoods_exit[player]:
                        write_int16(rom, 0x15DB5 + 2 * offset, 0x00F8)
                    elif room_id == 0x004a and world.fix_palaceofdarkness_exit[player]:
                        write_int16(rom, 0x15DB5 + 2 * offset, 0x0640)
                    elif room_id == 0x00d6 and world.fix_trock_exit[player]:
                        write_int16(rom, 0x15DB5 + 2 * offset, 0x0134)
                    elif room_id == 0x000c and world.fix_gtower_exit: # fix ganons tower exit point
                        write_int16(rom, 0x15DB5 + 2 * offset, 0x00A4)
                    else:
                        write_int16(rom, 0x15DB5 + 2 * offset, link_y)

                    write_int16(rom, 0x15E53 + 2 * offset, link_x)
                    write_int16(rom, 0x15EF1 + 2 * offset, camera_y)
                    write_int16(rom, 0x15F8F + 2 * offset, camera_x)
                    rom.write_byte(0x1602D + offset, unknown_1)
                    rom.write_byte(0x1607C + offset, unknown_2)
                    write_int16(rom, 0x160CB + 2 * offset, door_1)
                    write_int16(rom, 0x16169 + 2 * offset, door_2)
                elif isinstance(exit.addresses, list):
                    # is hole
                    for address in exit.addresses:
                        rom.write_byte(address, exit.target)
                else:
                    # patch door table
                    rom.write_byte(0xDBB73 + exit.addresses, exit.target)
    if world.mode[player] == 'inverted':
        patch_shuffled_dark_sanc(world, rom, player)

    # setup dr option flags based on experimental, etc.
    dr_flags = DROptions.Eternal_Mini_Bosses if world.doorShuffle[player] == 'vanilla' else DROptions.Town_Portal
    if world.doorShuffle[player] == 'crossed':
        dr_flags |= DROptions.Map_Info
    if world.experimental[player] and world.goal[player] != 'triforcehunt':
        dr_flags |= DROptions.Debug
    if world.doorShuffle[player] == 'crossed' and world.logic[player] != 'nologic'\
       and world.mixed_travel[player] == 'prevent':
        dr_flags |= DROptions.Rails
    if world.standardize_palettes[player] == 'original':
        dr_flags |= DROptions.OriginalPalettes
    if world.experimental[player]:
        dr_flags |= DROptions.DarkWorld_Spawns


    # fix hc big key problems (map and compass too)
    if world.doorShuffle[player] == 'crossed' or world.keydropshuffle[player]:
        rom.write_byte(0x151f1, 2)
        rom.write_byte(0x15270, 2)
        sanctuary = world.get_region('Sanctuary', player)
        rom.write_byte(0x1597b, sanctuary.dungeon.dungeon_id*2)
        update_compasses(rom, world, player)

    def should_be_bunny(region, mode):
        if mode != 'inverted':
            return region.is_dark_world and not region.is_light_world
        else:
            return region.is_light_world and not region.is_dark_world

    # dark world spawns
    sanc_region = world.get_region('Sanctuary', player)
    if should_be_bunny(sanc_region, world.mode[player]):
        rom.write_bytes(0x13fff2, [0x12, 0x00])

    lh_name = 'Links House'
    links_house = world.get_region(lh_name, player)
    if should_be_bunny(links_house, world.mode[player]):
        rom.write_bytes(0x13fff0, [0x04, 0x01])

    old_man_house = world.get_region('Old Man House', player)
    if should_be_bunny(old_man_house, world.mode[player]):
        rom.write_bytes(0x13fff4, [0xe4, 0x00])

    # patch doors
    if world.doorShuffle[player] == 'crossed':
        rom.write_byte(0x138002, 2)
        for name, layout in world.key_layout[player].items():
            offset = compass_data[name][4]//2
            if world.retro[player]:
                rom.write_byte(0x13f030+offset, layout.max_chests + layout.max_drops)
            else:
                rom.write_byte(0x13f020+offset, layout.max_chests + layout.max_drops)  # not currently used
                rom.write_byte(0x13f030+offset, layout.max_chests)
            builder = world.dungeon_layouts[player][name]
            rom.write_byte(0x13f080+offset, builder.location_cnt % 10)
            rom.write_byte(0x13f090+offset, builder.location_cnt // 10)
            rom.write_byte(0x13f0a0+offset, builder.location_cnt)
            bk_status = 1 if builder.bk_required else 0
            bk_status = 2 if builder.bk_provided else bk_status
            rom.write_byte(0x13f040+offset*2, bk_status)
        if player in world.sanc_portal.keys():
            rom.write_byte(0x159a6, world.sanc_portal[player].ent_offset)
            sanc_region = world.sanc_portal[player].door.entrance.parent_region
            if sanc_region.is_dark_world and not sanc_region.is_light_world:
                rom.write_byte(0x13ff00, 1)
        for room in world.rooms:
            if room.player == player and room.palette is not None:
                rom.write_byte(0x13f200+room.index, room.palette)
    if world.doorShuffle[player] == 'basic':
        rom.write_byte(0x138002, 1)
    for door in world.doors:
        if door.dest is not None and isinstance(door.dest, Door) and\
             door.player == player and door.type in [DoorType.Normal, DoorType.SpiralStairs,
                                                     DoorType.Open, DoorType.StraightStairs, DoorType.Ladder]:
            rom.write_bytes(door.getAddress(), door.dest.getTarget(door))
    for paired_door in world.paired_doors[player]:
        rom.write_bytes(paired_door.address_a(world, player), paired_door.rom_data_a(world, player))
        rom.write_bytes(paired_door.address_b(world, player), paired_door.rom_data_b(world, player))
    if world.doorShuffle[player] != 'vanilla':
        if not world.experimental[player]:
            for builder in world.dungeon_layouts[player].values():
                for stonewall in builder.pre_open_stonewalls:
                    if stonewall.name == 'Desert Wall Slide NW':
                        dr_flags |= DROptions.Open_Desert_Wall
                    elif stonewall.name == 'PoD Bow Statue Down Ladder':
                        dr_flags |= DROptions.Open_PoD_Wall
        for name, pair in boss_indicator.items():
            dungeon_id, boss_door = pair
            opposite_door = world.get_door(boss_door, player).dest
            if opposite_door and isinstance(opposite_door, Door) and opposite_door.roomIndex > -1:
                dungeon_name = opposite_door.entrance.parent_region.dungeon.name
                dungeon_id = boss_indicator[dungeon_name][0]
                rom.write_byte(0x13f000+dungeon_id, opposite_door.roomIndex)
            elif not opposite_door:
                rom.write_byte(0x13f000+dungeon_id, 0)  # no supertile preceeding boss
    if is_mystery:
        dr_flags |= DROptions.Hide_Total
    rom.write_byte(0x138004, dr_flags.value & 0xff)
    rom.write_byte(0x138005, (dr_flags.value & 0xff00) >> 8)
    if dr_flags & DROptions.Town_Portal and world.mode[player] == 'inverted':
        rom.write_byte(0x138006, 1)

    # swap in non-ER Lobby Shuffle Inverted - but only then
    if world.mode[player] == 'inverted' and world.intensity[player] >= 3 and world.doorShuffle[player] != 'vanilla' and world.shuffle[player] == 'vanilla':
        aga_portal = world.get_portal('Agahnims Tower', player)
        gt_portal = world.get_portal('Ganons Tower', player)
        aga_portal.exit_offset, gt_portal.exit_offset = gt_portal.exit_offset, aga_portal.exit_offset
        aga_portal.default = False
        gt_portal.default = False

    for portal in world.dungeon_portals[player]:
        if not portal.default:
            offset = portal.ent_offset
            rom.write_byte(0x14577 + offset*2, portal.current_room())
            rom.write_bytes(0x14681 + offset*8, portal.relative_coords())
            rom.write_bytes(0x14aa9 + offset*2, portal.scroll_x())
            rom.write_bytes(0x14bb3 + offset*2, portal.scroll_y())
            rom.write_bytes(0x14cbd + offset*2, portal.link_y())
            rom.write_bytes(0x14dc7 + offset*2, portal.link_x())
            rom.write_bytes(0x14fdb + offset*2, portal.camera_x())
            rom.write_byte(0x152f9 + offset, portal.bg_setting())
            rom.write_byte(0x1537e + offset, portal.hv_scroll())
            rom.write_byte(0x15403 + offset, portal.scroll_quad())
            rom.write_byte(0x15aee + portal.exit_offset, portal.current_room())
            if portal.boss_exit_idx > -1:
                rom.write_byte(0x7939 + portal.boss_exit_idx, portal.current_room())

    # fix exits, if not fixed during exit patching
    if world.fix_skullwoods_exit[player] and world.shuffle[player] == 'vanilla':
        write_int16(rom, 0x15DB5 + 2 * exit_ids['Skull Woods Final Section Exit'][1], 0x00F8)
    elif world.force_fix[player]['sw']:
        write_int16(rom, 0x15DB5 + world.force_fix[player]['sw'].exit_offset, 0x00F8)
    if world.force_fix[player]['pod']:
        write_int16(rom, 0x15DB5 + world.force_fix[player]['pod'].exit_offset, 0x0640)
    if world.force_fix[player]['tr']:
        write_int16(rom, 0x15DB5 + world.force_fix[player]['tr'].exit_offset, 0x0134)
    if world.force_fix[player]['gt']:
        write_int16(rom, 0x15DB5 + world.force_fix[player]['gt'].exit_offset, 0x00A4)

    write_custom_shops(rom, world, player)

    def credits_digit(num):
        # top: $54 is 1, 55 2, etc , so 57=4, 5C=9
        # bot: $7A is 1, 7B is 2, etc so 7D=4, 82=9 (zero unknown...)
        return 0x53+int(num), 0x79+int(num)

    credits_total = 216
    if world.keydropshuffle[player]:
        credits_total += 33
    if world.shopsanity[player]:
        credits_total += 32
    if world.retro[player]:
        credits_total += 9 if world.shopsanity[player] else 5

    if world.keydropshuffle[player]:
        rom.write_byte(0x140000, 1)
    multiClientFlags = ((0x1 if world.keydropshuffle[player] else 0) | (0x2 if world.shopsanity[player] else 0)
                        | (0x4 if world.retro[player] else 0))
    rom.write_byte(0x140001, multiClientFlags)

    write_int16(rom, 0x187010, credits_total)  # dynamic credits
    if credits_total != 216:
        # collection rate address:
        cr_address = 0x2391BE
        cr_pc = cr_address - 0x120000  # convert to pc
        mid_top, mid_bot = credits_digit((credits_total // 10) % 10)
        last_top, last_bot = credits_digit(credits_total % 10)
        # top half
        rom.write_byte(cr_pc+0x1c, mid_top)
        rom.write_byte(cr_pc+0x1d, last_top)
        # bottom half
        rom.write_byte(cr_pc+0x3a, mid_bot)
        rom.write_byte(cr_pc+0x3b, last_bot)

    if world.keydropshuffle[player] or world.doorShuffle[player] != 'vanilla':
        gt = world.dungeon_layouts[player]['Ganons Tower']
        gt_logic = world.key_logic[player]['Ganons Tower']
        total = 0
        for region in gt.master_sector.regions:
            total += count_locations_exclude_logic(region.locations, gt_logic)
        # rom.write_byte(0x187012, total)  # dynamic credits
        # gt big key address:
        gtbk_address = 0x2390E0
        gtbk_pc = gtbk_address - 0x120000  # convert to pc
        mid_top, mid_bot = credits_digit(total // 10)
        last_top, last_bot = credits_digit(total % 10)
        # top half
        rom.write_byte(gtbk_pc+0x1c, mid_top)
        rom.write_byte(gtbk_pc+0x1d, last_top)
        # bottom half
        rom.write_byte(gtbk_pc+0x3a, mid_bot)
        rom.write_byte(gtbk_pc+0x3b, last_bot)

    # patch medallion requirements
    if world.required_medallions[player][0] == 'Bombos':
        rom.write_byte(0x180022, 0x00)  # requirement
        rom.write_byte(0x4FF2, 0x31)  # sprite
        rom.write_byte(0x50D1, 0x80)
        rom.write_byte(0x51B0, 0x00)
    elif world.required_medallions[player][0] == 'Quake':
        rom.write_byte(0x180022, 0x02)  # requirement
        rom.write_byte(0x4FF2, 0x31)  # sprite
        rom.write_byte(0x50D1, 0x88)
        rom.write_byte(0x51B0, 0x00)
    if world.required_medallions[player][1] == 'Bombos':
        rom.write_byte(0x180023, 0x00)  # requirement
        rom.write_byte(0x5020, 0x31)  # sprite
        rom.write_byte(0x50FF, 0x90)
        rom.write_byte(0x51DE, 0x00)
    elif world.required_medallions[player][1] == 'Ether':
        rom.write_byte(0x180023, 0x01)  # requirement
        rom.write_byte(0x5020, 0x31)  # sprite
        rom.write_byte(0x50FF, 0x98)
        rom.write_byte(0x51DE, 0x00)

    # set open mode:
    if world.mode[player] in ['open', 'inverted']:
        rom.write_byte(0x180032, 0x01)  # open mode
    elif world.mode[player] == 'standard':
        rom.write_byte(0x180032, 0x00)  # standard mode

    set_inverted_mode(world, player, rom)

    uncle_location = world.get_location('Link\'s Uncle', player)
    if uncle_location.item is None or uncle_location.item.name not in ['Master Sword', 'Tempered Sword', 'Fighter Sword', 'Golden Sword', 'Progressive Sword']:
        # disable sword sprite from uncle
        rom.write_bytes(0x6D263, [0x00, 0x00, 0xf6, 0xff, 0x00, 0x0E])
        rom.write_bytes(0x6D26B, [0x00, 0x00, 0xf6, 0xff, 0x00, 0x0E])
        rom.write_bytes(0x6D293, [0x00, 0x00, 0xf6, 0xff, 0x00, 0x0E])
        rom.write_bytes(0x6D29B, [0x00, 0x00, 0xf7, 0xff, 0x00, 0x0E])
        rom.write_bytes(0x6D2B3, [0x00, 0x00, 0xf6, 0xff, 0x02, 0x0E])
        rom.write_bytes(0x6D2BB, [0x00, 0x00, 0xf6, 0xff, 0x02, 0x0E])
        rom.write_bytes(0x6D2E3, [0x00, 0x00, 0xf7, 0xff, 0x02, 0x0E])
        rom.write_bytes(0x6D2EB, [0x00, 0x00, 0xf7, 0xff, 0x02, 0x0E])
        rom.write_bytes(0x6D31B, [0x00, 0x00, 0xe4, 0xff, 0x08, 0x0E])
        rom.write_bytes(0x6D323, [0x00, 0x00, 0xe4, 0xff, 0x08, 0x0E])

    # set light cones
    rom.write_byte(0x180038, 0x01 if world.sewer_light_cone[player] else 0x00)
    rom.write_byte(0x180039, 0x01 if world.light_world_light_cone else 0x00)
    rom.write_byte(0x18003A, 0x01 if world.dark_world_light_cone else 0x00)

    GREEN_TWENTY_RUPEES = 0x47
    TRIFORCE_PIECE = ItemFactory('Triforce Piece', player).code
    GREEN_CLOCK = ItemFactory('Green Clock', player).code

    rom.write_byte(0x18004F, 0x01)  # Byrna Invulnerability: on

    # handle difficulty_adjustments
    if world.difficulty_adjustments[player] == 'hard':
        rom.write_byte(0x180181, 0x01) # Make silver arrows work only on ganon
        rom.write_byte(0x180182, 0x00) # Don't auto equip silvers on pickup
        # Powdered Fairies Prize
        rom.write_byte(0x36DD0, 0xD8)  # One Heart
        # potion heal amount
        rom.write_byte(0x180084, 0x38)  # Seven Hearts
        # potion magic restore amount
        rom.write_byte(0x180085, 0x40)  # Half Magic
        #Cape magic cost
        rom.write_bytes(0x3ADA7, [0x02, 0x04, 0x08])
        # Byrna Invulnerability: off
        rom.write_byte(0x18004F, 0x00)
        #Disable catching fairies
        rom.write_byte(0x34FD6, 0x80)
        overflow_replacement = GREEN_TWENTY_RUPEES
        # Rupoor negative value
        write_int16(rom, 0x180036, world.rupoor_cost)
        # Set stun items
        rom.write_byte(0x180180, 0x02) # Hookshot only
    elif world.difficulty_adjustments[player] == 'expert':
        rom.write_byte(0x180181, 0x01) # Make silver arrows work only on ganon
        rom.write_byte(0x180182, 0x00) # Don't auto equip silvers on pickup
        # Powdered Fairies Prize
        rom.write_byte(0x36DD0, 0xD8)  # One Heart
        # potion heal amount
        rom.write_byte(0x180084, 0x20)  # 4 Hearts
        # potion magic restore amount
        rom.write_byte(0x180085, 0x20)  # Quarter Magic
        #Cape magic cost
        rom.write_bytes(0x3ADA7, [0x02, 0x04, 0x08])
        # Byrna Invulnerability: off
        rom.write_byte(0x18004F, 0x00)
        #Disable catching fairies
        rom.write_byte(0x34FD6, 0x80)
        overflow_replacement = GREEN_TWENTY_RUPEES
        # Rupoor negative value
        write_int16(rom, 0x180036, world.rupoor_cost)
        # Set stun items
        rom.write_byte(0x180180, 0x00) # Nothing
    else:
        rom.write_byte(0x180181, 0x00) # Make silver arrows freely usable
        rom.write_byte(0x180182, 0x01) # auto equip silvers on pickup
        # Powdered Fairies Prize
        rom.write_byte(0x36DD0, 0xE3)  # fairy
        # potion heal amount
        rom.write_byte(0x180084, 0xA0)  # full
        # potion magic restore amount
        rom.write_byte(0x180085, 0x80)  # full
        #Cape magic cost
        rom.write_bytes(0x3ADA7, [0x04, 0x08, 0x10])
        # Byrna Invulnerability: on
        rom.write_byte(0x18004F, 0x01)
        #Enable catching fairies
        rom.write_byte(0x34FD6, 0xF0)
        # Rupoor negative value
        write_int16(rom, 0x180036, world.rupoor_cost)
        # Set stun items
        rom.write_byte(0x180180, 0x03) # All standard items
        #Set overflow items for progressive equipment
        if world.timer in ['timed', 'timed-countdown', 'timed-ohko']:
            overflow_replacement = GREEN_CLOCK
        else:
            overflow_replacement = GREEN_TWENTY_RUPEES

    #Byrna residual magic cost
    rom.write_bytes(0x45C42, [0x04, 0x02, 0x01])

    difficulty = world.difficulty_requirements[player]

    #Set overflow items for progressive equipment
    rom.write_bytes(0x180090,
                    [difficulty.progressive_sword_limit if world.swords[player] != 'swordless' else 0, overflow_replacement,
                     difficulty.progressive_shield_limit, overflow_replacement,
                     difficulty.progressive_armor_limit, overflow_replacement,
                     difficulty.progressive_bottle_limit, overflow_replacement])

    #Work around for json patch ordering issues - write bow limit separately so that it is replaced in the patch
    rom.write_bytes(0x180098, [difficulty.progressive_bow_limit, overflow_replacement])

    if difficulty.progressive_bow_limit < 2 and world.swords[player] == 'swordless':
        rom.write_bytes(0x180098, [2, overflow_replacement])

    # set up game internal RNG seed
    for i in range(1024):
        rom.write_byte(0x178000 + i, random.randint(0, 255))

    # shuffle prize packs
    prizes = [0xD8, 0xD8, 0xD8, 0xD8, 0xD9, 0xD8, 0xD8, 0xD9, 0xDA, 0xD9, 0xDA, 0xDB, 0xDA, 0xD9, 0xDA, 0xDA, 0xE0, 0xDF, 0xDF, 0xDA, 0xE0, 0xDF, 0xD8, 0xDF,
              0xDC, 0xDC, 0xDC, 0xDD, 0xDC, 0xDC, 0xDE, 0xDC, 0xE1, 0xD8, 0xE1, 0xE2, 0xE1, 0xD8, 0xE1, 0xE2, 0xDF, 0xD9, 0xD8, 0xE1, 0xDF, 0xDC, 0xD9, 0xD8,
              0xD8, 0xE3, 0xE0, 0xDB, 0xDE, 0xD8, 0xDB, 0xE2, 0xD9, 0xDA, 0xDB, 0xD9, 0xDB, 0xD9, 0xDB]
    dig_prizes = [0xB2, 0xD8, 0xD8, 0xD8, 0xD8, 0xD8, 0xD8, 0xD8, 0xD8,
                  0xD9, 0xD9, 0xD9, 0xD9, 0xD9, 0xDA, 0xDA, 0xDA, 0xDA, 0xDA,
                  0xDB, 0xDB, 0xDB, 0xDB, 0xDB, 0xDC, 0xDC, 0xDC, 0xDC, 0xDC,
                  0xDD, 0xDD, 0xDD, 0xDD, 0xDD, 0xDE, 0xDE, 0xDE, 0xDE, 0xDE,
                  0xDF, 0xDF, 0xDF, 0xDF, 0xDF, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
                  0xE1, 0xE1, 0xE1, 0xE1, 0xE1, 0xE2, 0xE2, 0xE2, 0xE2, 0xE2,
                  0xE3, 0xE3, 0xE3, 0xE3, 0xE3]

    def chunk(l,n):
        return [l[i:i+n] for i in range(0, len(l), n)]

    # randomize last 7 slots
    prizes [-7:] = random.sample(prizes, 7)

    #shuffle order of 7 main packs
    packs = chunk(prizes[:56], 8)
    random.shuffle(packs)
    prizes[:56] = [drop for pack in packs for drop in pack]

    if world.difficulty_adjustments[player] in ['hard', 'expert']:
        prize_replacements = {0xE0: 0xDF, # Fairy -> heart
                              0xE3: 0xD8} # Big magic -> small magic
        prizes = [prize_replacements.get(prize, prize) for prize in prizes]
        dig_prizes = [prize_replacements.get(prize, prize) for prize in dig_prizes]

    if world.retro[player]:
        prize_replacements = {0xE1: 0xDA, #5 Arrows -> Blue Rupee
                              0xE2: 0xDB} #10 Arrows -> Red Rupee
        prizes = [prize_replacements.get(prize, prize) for prize in prizes]
        dig_prizes = [prize_replacements.get(prize, prize) for prize in dig_prizes]
    rom.write_bytes(0x180100, dig_prizes)

    # write tree pull prizes
    rom.write_byte(0xEFBD4, prizes.pop())
    rom.write_byte(0xEFBD5, prizes.pop())
    rom.write_byte(0xEFBD6, prizes.pop())

    # rupee crab prizes
    rom.write_byte(0x329C8, prizes.pop())  # first prize
    rom.write_byte(0x329C4, prizes.pop())  # final prize

    # stunned enemy prize
    rom.write_byte(0x37993, prizes.pop())

    # saved fish prize
    rom.write_byte(0xE82CC, prizes.pop())

    # fill enemy prize packs
    rom.write_bytes(0x37A78, prizes)

    # set bonk prizes
    bonk_prizes = [0x79, 0xE3, 0x79, 0xAC, 0xAC, 0xE0, 0xDC, 0xAC, 0xE3, 0xE3, 0xDA, 0xE3, 0xDA, 0xD8, 0xAC, 0xAC, 0xE3, 0xD8, 0xE3, 0xE3, 0xE3, 0xE3, 0xE3, 0xE3, 0xDC, 0xDB, 0xE3, 0xDA, 0x79, 0x79, 0xE3, 0xE3,
                   0xDA, 0x79, 0xAC, 0xAC, 0x79, 0xE3, 0x79, 0xAC, 0xAC, 0xE0, 0xDC, 0xE3, 0x79, 0xDE, 0xE3, 0xAC, 0xDB, 0x79, 0xE3, 0xD8, 0xAC, 0x79, 0xE3, 0xDB, 0xDB, 0xE3, 0xE3, 0x79, 0xD8, 0xDD]
    bonk_addresses = [0x4CF6C, 0x4CFBA, 0x4CFE0, 0x4CFFB, 0x4D018, 0x4D01B, 0x4D028, 0x4D03C, 0x4D059, 0x4D07A, 0x4D09E, 0x4D0A8, 0x4D0AB, 0x4D0AE, 0x4D0BE, 0x4D0DD,
                      0x4D16A, 0x4D1E5, 0x4D1EE, 0x4D20B, 0x4CBBF, 0x4CBBF, 0x4CC17, 0x4CC1A, 0x4CC4A, 0x4CC4D, 0x4CC53, 0x4CC69, 0x4CC6F, 0x4CC7C, 0x4CCEF, 0x4CD51,
                      0x4CDC0, 0x4CDC3, 0x4CDC6, 0x4CE37, 0x4D2DE, 0x4D32F, 0x4D355, 0x4D367, 0x4D384, 0x4D387, 0x4D397, 0x4D39E, 0x4D3AB, 0x4D3AE, 0x4D3D1, 0x4D3D7,
                      0x4D3F8, 0x4D416, 0x4D420, 0x4D423, 0x4D42D, 0x4D449, 0x4D48C, 0x4D4D9, 0x4D4DC, 0x4D4E3, 0x4D504, 0x4D507, 0x4D55E, 0x4D56A]
    if world.shuffle_bonk_prizes:
        random.shuffle(bonk_prizes)
    for prize, address in zip(bonk_prizes, bonk_addresses):
        rom.write_byte(address, prize)

    # Fill in item substitutions table
    rom.write_bytes(0x184000, [
        # original_item, limit, replacement_item, filler
        0x12, 0x01, 0x35, 0xFF, # lamp -> 5 rupees
        0x51, 0x06, 0x52, 0xFF, # 6 +5 bomb upgrades -> +10 bomb upgrade
        0x53, 0x06, 0x54, 0xFF, # 6 +5 arrow upgrades -> +10 arrow upgrade
        0x58, 0x01, 0x36 if world.retro[player] else 0x43, 0xFF, # silver arrows -> single arrow (red 20 in retro mode)
        0x3E, difficulty.boss_heart_container_limit, 0x47, 0xff, # boss heart -> green 20
        0x17, difficulty.heart_piece_limit, 0x47, 0xff, # piece of heart -> green 20
        0xFF, 0xFF, 0xFF, 0xFF, # end of table sentinel
    ])

    # set Fountain bottle exchange items
    if world.difficulty[player] in ['hard', 'expert']:
        rom.write_byte(0x348FF, [0x16, 0x2B, 0x2C, 0x2D, 0x3C, 0x48][random.randint(0, 5)])
        rom.write_byte(0x3493B, [0x16, 0x2B, 0x2C, 0x2D, 0x3C, 0x48][random.randint(0, 5)])
    else:
        rom.write_byte(0x348FF, [0x16, 0x2B, 0x2C, 0x2D, 0x3C, 0x3D, 0x48][random.randint(0, 6)])
        rom.write_byte(0x3493B, [0x16, 0x2B, 0x2C, 0x2D, 0x3C, 0x3D, 0x48][random.randint(0, 6)])

    #enable Fat Fairy Chests
    rom.write_bytes(0x1FC16, [0xB1, 0xC6, 0xF9, 0xC9, 0xC6, 0xF9])
    # set Fat Fairy Bow/Sword prizes to be disappointing
    rom.write_byte(0x34914, 0x3A)  # Bow and Arrow
    rom.write_byte(0x180028, 0x49)  # Fighter Sword
    # enable Waterfall fairy chests
    rom.write_bytes(0xE9AE, [0x14, 0x01])
    rom.write_bytes(0xE9CF, [0x14, 0x01])
    rom.write_bytes(0x1F714, [225, 0, 16, 172, 13, 41, 154, 1, 88, 152, 15, 17, 177, 97, 252, 77, 129, 32, 218, 2, 44, 225, 97, 252, 190, 129, 97, 177, 98, 84, 218, 2,
                              253, 141, 131, 68, 225, 98, 253, 30, 131, 49, 165, 201, 49, 164, 105, 49, 192, 34, 77, 164, 105, 49, 198, 249, 73, 198, 249, 16, 153, 160, 92, 153,
                              162, 11, 152, 96, 13, 232, 192, 85, 232, 192, 11, 146, 0, 115, 152, 96, 254, 105, 0, 152, 163, 97, 254, 107, 129, 254, 171, 133, 169, 200, 97, 254,
                              174, 129, 255, 105, 2, 216, 163, 98, 255, 107, 131, 255, 43, 135, 201, 200, 98, 255, 46, 131, 254, 161, 0, 170, 33, 97, 254, 166, 129, 255, 33, 2,
                              202, 33, 98, 255, 38, 131, 187, 35, 250, 195, 35, 250, 187, 43, 250, 195, 43, 250, 187, 83, 250, 195, 83, 250, 176, 160, 61, 152, 19, 192, 152, 82,
                              192, 136, 0, 96, 144, 0, 96, 232, 0, 96, 240, 0, 96, 152, 202, 192, 216, 202, 192, 216, 19, 192, 216, 82, 192, 252, 189, 133, 253, 29, 135, 255,
                              255, 255, 255, 240, 255, 128, 46, 97, 14, 129, 14, 255, 255])
    # set Waterfall fairy prizes to be disappointing
    rom.write_byte(0x348DB, 0x3A)  # Red Boomerang becomes Red Boomerang
    rom.write_byte(0x348EB, 0x05)  # Blue Shield becomes Blue Shield

    # Remove Statues for upgrade fairy
    rom.write_bytes(0x01F810, [0x1A, 0x1E, 0x01, 0x1A, 0x1E, 0x01])


    rom.write_byte(0x180029, 0x01) # Smithy quick item give

    # set swordless mode settings
    rom.write_byte(0x18003F, 0x01 if world.swords[player] == 'swordless' else 0x00)  # hammer can harm ganon
    rom.write_byte(0x180040, 0x01 if world.swords[player] == 'swordless' else 0x00)  # open curtains
    rom.write_byte(0x180041, 0x01 if world.swords[player] == 'swordless' else 0x00)  # swordless medallions
    rom.write_byte(0x180043, 0xFF if world.swords[player] == 'swordless' else 0x00)  # starting sword for link
    rom.write_byte(0x180044, 0x01 if world.swords[player] == 'swordless' else 0x00)  # hammer activates tablets

    # set up clocks for timed modes
    if world.shuffle[player] == 'vanilla':
        ERtimeincrease = 0
    elif world.shuffle[player] in ['dungeonssimple', 'dungeonsfull']:
        ERtimeincrease = 10
    else:
        ERtimeincrease = 20
    if world.keyshuffle[player] or world.bigkeyshuffle[player] or world.mapshuffle[player]:
        ERtimeincrease = ERtimeincrease + 15
    if world.clock_mode == 'none':
        rom.write_bytes(0x180190, [0x00, 0x00, 0x00])  # turn off clock mode
        write_int32(rom, 0x180200, 0)  # red clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180204, 0)  # blue clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180208, 0)  # green clock adjustment time (in frames, sint32)
        write_int32(rom, 0x18020C, 0)  # starting time (in frames, sint32)
    elif world.clock_mode == 'ohko':
        rom.write_bytes(0x180190, [0x01, 0x02, 0x01])  # ohko timer with resetable timer functionality
        write_int32(rom, 0x180200, 0)  # red clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180204, 0)  # blue clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180208, 0)  # green clock adjustment time (in frames, sint32)
        write_int32(rom, 0x18020C, 0)  # starting time (in frames, sint32)
    elif world.clock_mode == 'countdown-ohko':
        rom.write_bytes(0x180190, [0x01, 0x02, 0x01])  # ohko timer with resetable timer functionality
        write_int32(rom, 0x180200, -100 * 60 * 60 * 60)  # red clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180204, 2 * 60 * 60)  # blue clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180208, 4 * 60 * 60)  # green clock adjustment time (in frames, sint32)
        if world.difficulty_adjustments[player] == 'normal':
            write_int32(rom, 0x18020C, (10 + ERtimeincrease) * 60 * 60)  # starting time (in frames, sint32)
        else:
            write_int32(rom, 0x18020C, int((5 + ERtimeincrease / 2) * 60 * 60))  # starting time (in frames, sint32)
    if world.clock_mode == 'stopwatch':
        rom.write_bytes(0x180190, [0x02, 0x01, 0x00])  # set stopwatch mode
        write_int32(rom, 0x180200, -2 * 60 * 60)  # red clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180204, 2 * 60 * 60)  # blue clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180208, 4 * 60 * 60)  # green clock adjustment time (in frames, sint32)
        write_int32(rom, 0x18020C, 0)  # starting time (in frames, sint32)
    if world.clock_mode == 'countdown':
        rom.write_bytes(0x180190, [0x01, 0x01, 0x00])  # set countdown, with no reset available
        write_int32(rom, 0x180200, -2 * 60 * 60)  # red clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180204, 2 * 60 * 60)  # blue clock adjustment time (in frames, sint32)
        write_int32(rom, 0x180208, 4 * 60 * 60)  # green clock adjustment time (in frames, sint32)
        write_int32(rom, 0x18020C, (40 + ERtimeincrease) * 60 * 60)  # starting time (in frames, sint32)

    # set up goals for treasure hunt
    rom.write_bytes(0x180165, [0x0E, 0x28] if world.treasure_hunt_icon[player] == 'Triforce Piece' else [0x0D, 0x28])
    if world.goal[player] == 'triforcehunt':
        rom.write_byte(0x180167, int(world.treasure_hunt_count[player]) % 256)
    rom.write_byte(0x180194, 1)  # Must turn in triforced pieces (instant win not enabled)

    rom.write_bytes(0x180213, [0x00, 0x01])  # Not a Tournament Seed

    gametype = 0x04 # item
    if world.shuffle[player] != 'vanilla' or world.doorShuffle[player] != 'vanilla' or world.keydropshuffle[player]:
        gametype |= 0x02  # entrance/door
    if enemized:
        gametype |= 0x01  # enemizer
    rom.write_byte(0x180211, gametype)  # Game type

    # assorted fixes
    rom.write_byte(0x1800A2, 0x01 if world.fix_fake_world else 0x00)  # remain in real dark world when dying in dark world dungeon before killing aga1
    rom.write_byte(0x180169, 0x01 if world.lock_aga_door_in_escape else 0x00)  # Lock or unlock aga tower door during escape sequence.
    if world.mode[player] == 'inverted':
        rom.write_byte(0x180169, 0x02)  # lock aga/ganon tower door with crystals in inverted
    rom.write_byte(0x180171, 0x01 if world.ganon_at_pyramid[player] else 0x00)  # Enable respawning on pyramid after ganon death
    rom.write_byte(0x180173, 0x01) # Bob is enabled
    rom.write_byte(0x180168, 0x08)  # Spike Cave Damage
    rom.write_bytes(0x18016B, [0x04, 0x02, 0x01]) # Set spike cave and MM spike room Byrna usage
    rom.write_bytes(0x18016E, [0x04, 0x08, 0x10]) # Set spike cave and MM spike room Cape usage
    rom.write_bytes(0x50563, [0x3F, 0x14]) # disable below ganon chest
    rom.write_byte(0x50599, 0x00) # disable below ganon chest
    rom.write_bytes(0xE9A5, [0x7E, 0x00, 0x24]) # disable below ganon chest
    rom.write_byte(0x18008B, 0x01 if world.open_pyramid[player] else 0x00) # pre-open Pyramid Hole
    rom.write_byte(0x18008C, 0x01 if world.crystals_needed_for_gt[player] == 0 else 0x00) # GT pre-opened if crystal requirement is 0
    rom.write_byte(0xF5D73, 0xF0) # bees are catchable
    rom.write_byte(0xF5F10, 0xF0) # bees are catchable
    rom.write_byte(0x180086, 0x00 if world.aga_randomness else 0x01)  # set blue ball and ganon warp randomness
    rom.write_byte(0x1800A0, 0x01)  # return to light world on s+q without mirror
    rom.write_byte(0x1800A1, 0x01)  # enable overworld screen transition draining for water level inside swamp
    rom.write_byte(0x180174, 0x01 if world.fix_fake_world[player] else 0x00)
    rom.write_byte(0x18017E, 0x01) # Fairy fountains only trade in bottles

    # Starting equipment
    equip = [0] * (0x340 + 0x4F)
    equip[0x36C] = 0x18
    equip[0x36D] = 0x18
    equip[0x379] = 0x68
    starting_max_bombs = 10
    starting_max_arrows = 30

    startingstate = CollectionState(world)

    if startingstate.has('Bow', player):
        equip[0x340] = 3 if startingstate.has('Silver Arrows', player) else 1
        equip[0x38E] |= 0x20  # progressive flag to get the correct hint in all cases
        if not world.retro[player]:
            equip[0x38E] |= 0x80
    if startingstate.has('Silver Arrows', player):
        equip[0x38E] |= 0x40

    if startingstate.has('Titans Mitts', player):
        equip[0x354] = 2
    elif startingstate.has('Power Glove', player):
        equip[0x354] = 1

    if startingstate.has('Golden Sword', player):
        equip[0x359] = 4
    elif startingstate.has('Tempered Sword', player):
        equip[0x359] = 3
    elif startingstate.has('Master Sword', player):
        equip[0x359] = 2
    elif startingstate.has('Fighter Sword', player):
        equip[0x359] = 1

    if startingstate.has('Mirror Shield', player):
        equip[0x35A] = 3
    elif startingstate.has('Red Shield', player):
        equip[0x35A] = 2
    elif startingstate.has('Blue Shield', player):
        equip[0x35A] = 1

    if startingstate.has('Red Mail', player):
        equip[0x35B] = 2
    elif startingstate.has('Blue Mail', player):
        equip[0x35B] = 1

    if startingstate.has('Magic Upgrade (1/4)', player):
        equip[0x37B] = 2
        equip[0x36E] = 0x80
    elif startingstate.has('Magic Upgrade (1/2)', player):
        equip[0x37B] = 1
        equip[0x36E] = 0x80

    for item in world.precollected_items:
        if item.player != player:
            continue

        if item.name in ['Bow', 'Silver Arrows', 'Progressive Bow', 'Progressive Bow (Alt)',
                         'Titans Mitts', 'Power Glove', 'Progressive Glove',
                         'Golden Sword', 'Tempered Sword', 'Master Sword', 'Fighter Sword', 'Progressive Sword',
                         'Mirror Shield', 'Red Shield', 'Blue Shield', 'Progressive Shield',
                         'Red Mail', 'Blue Mail', 'Progressive Armor',
                         'Magic Upgrade (1/4)', 'Magic Upgrade (1/2)']:
            continue

        set_table = {'Book of Mudora': (0x34E, 1), 'Hammer': (0x34B, 1), 'Bug Catching Net': (0x34D, 1), 'Hookshot': (0x342, 1), 'Magic Mirror': (0x353, 2),
                     'Cape': (0x352, 1), 'Lamp': (0x34A, 1), 'Moon Pearl': (0x357, 1), 'Cane of Somaria': (0x350, 1), 'Cane of Byrna': (0x351, 1),
                     'Fire Rod': (0x345, 1), 'Ice Rod': (0x346, 1), 'Bombos': (0x347, 1), 'Ether': (0x348, 1), 'Quake': (0x349, 1)}
        or_table = {'Green Pendant': (0x374, 0x04), 'Red Pendant': (0x374, 0x01), 'Blue Pendant': (0x374, 0x02),
                    'Crystal 1': (0x37A, 0x02), 'Crystal 2': (0x37A, 0x10), 'Crystal 3': (0x37A, 0x40), 'Crystal 4': (0x37A, 0x20),
                    'Crystal 5': (0x37A, 0x04), 'Crystal 6': (0x37A, 0x01), 'Crystal 7': (0x37A, 0x08),
                    'Big Key (Eastern Palace)': (0x367, 0x20), 'Compass (Eastern Palace)': (0x365, 0x20), 'Map (Eastern Palace)': (0x369, 0x20),
                    'Big Key (Desert Palace)': (0x367, 0x10), 'Compass (Desert Palace)': (0x365, 0x10), 'Map (Desert Palace)': (0x369, 0x10),
                    'Big Key (Tower of Hera)': (0x366, 0x20), 'Compass (Tower of Hera)': (0x364, 0x20), 'Map (Tower of Hera)': (0x368, 0x20),
                    'Big Key (Escape)': (0x367, 0xC0), 'Compass (Escape)': (0x365, 0xC0), 'Map (Escape)': (0x369, 0xC0),
                    'Big Key (Agahnims Tower)': (0x367, 0x08), 'Compass (Agahnims Tower)': (0x365, 0x08), 'Map (Agahnims Tower)': (0x369, 0x08),
                    'Big Key (Palace of Darkness)': (0x367, 0x02), 'Compass (Palace of Darkness)': (0x365, 0x02), 'Map (Palace of Darkness)': (0x369, 0x02),
                    'Big Key (Thieves Town)': (0x366, 0x10), 'Compass (Thieves Town)': (0x364, 0x10), 'Map (Thieves Town)': (0x368, 0x10),
                    'Big Key (Skull Woods)': (0x366, 0x80), 'Compass (Skull Woods)': (0x364, 0x80), 'Map (Skull Woods)': (0x368, 0x80),
                    'Big Key (Swamp Palace)': (0x367, 0x04), 'Compass (Swamp Palace)': (0x365, 0x04), 'Map (Swamp Palace)': (0x369, 0x04),
                    'Big Key (Ice Palace)': (0x366, 0x40), 'Compass (Ice Palace)': (0x364, 0x40), 'Map (Ice Palace)': (0x368, 0x40),
                    'Big Key (Misery Mire)': (0x367, 0x01), 'Compass (Misery Mire)': (0x365, 0x01), 'Map (Misery Mire)': (0x369, 0x01),
                    'Big Key (Turtle Rock)': (0x366, 0x08), 'Compass (Turtle Rock)': (0x364, 0x08), 'Map (Turtle Rock)': (0x368, 0x08),
                    'Big Key (Ganons Tower)': (0x366, 0x04), 'Compass (Ganons Tower)': (0x364, 0x04), 'Map (Ganons Tower)': (0x368, 0x04)}
        set_or_table = {'Flippers': (0x356, 1, 0x379, 0x02),'Pegasus Boots': (0x355, 1, 0x379, 0x04),
                        'Shovel': (0x34C, 1, 0x38C, 0x04), 'Ocarina': (0x34C, 3, 0x38C, 0x01),
                        'Mushroom': (0x344, 1, 0x38C, 0x20 | 0x08), 'Magic Powder': (0x344, 2, 0x38C, 0x10),
                        'Blue Boomerang': (0x341, 1, 0x38C, 0x80), 'Red Boomerang': (0x341, 2, 0x38C, 0x40)}
        keys = {'Small Key (Eastern Palace)': [0x37E], 'Small Key (Desert Palace)': [0x37F],
                'Small Key (Tower of Hera)': [0x386],
                'Small Key (Agahnims Tower)': [0x380], 'Small Key (Palace of Darkness)': [0x382],
                'Small Key (Thieves Town)': [0x387],
                'Small Key (Skull Woods)': [0x384], 'Small Key (Swamp Palace)': [0x381],
                'Small Key (Ice Palace)': [0x385],
                'Small Key (Misery Mire)': [0x383], 'Small Key (Turtle Rock)': [0x388],
                'Small Key (Ganons Tower)': [0x389],
                'Small Key (Universal)': [0x38B], 'Small Key (Escape)': [0x37C, 0x37D]}
        bottles = {'Bottle': 2, 'Bottle (Red Potion)': 3, 'Bottle (Green Potion)': 4, 'Bottle (Blue Potion)': 5,
                   'Bottle (Fairy)': 6, 'Bottle (Bee)': 7, 'Bottle (Good Bee)': 8}
        rupees = {'Rupee (1)': 1, 'Rupees (5)': 5, 'Rupees (20)': 20, 'Rupees (50)': 50, 'Rupees (100)': 100, 'Rupees (300)': 300}
        bomb_caps = {'Bomb Upgrade (+5)': 5, 'Bomb Upgrade (+10)': 10}
        arrow_caps = {'Arrow Upgrade (+5)': 5, 'Arrow Upgrade (+10)': 10}
        bombs = {'Single Bomb': 1, 'Bombs (3)': 3, 'Bombs (10)': 10}
        arrows = {'Single Arrow': 1, 'Arrows (10)': 10}

        if item.name in set_table:
            equip[set_table[item.name][0]] = set_table[item.name][1]
        elif item.name in or_table:
            equip[or_table[item.name][0]] |= or_table[item.name][1]
        elif item.name in set_or_table:
            equip[set_or_table[item.name][0]] = set_or_table[item.name][1]
            equip[set_or_table[item.name][2]] |= set_or_table[item.name][3]
        elif item.name in keys:
            for address in keys[item.name]:
                equip[address] = min(equip[address] + 1, 99)
        elif item.name in bottles:
            if equip[0x34F] < world.difficulty_requirements[player].progressive_bottle_limit:
                equip[0x35C + equip[0x34F]] = bottles[item.name]
                equip[0x34F] += 1
        elif item.name in rupees:
            equip[0x360:0x362] = list(min(equip[0x360] + (equip[0x361] << 8) + rupees[item.name], 9999).to_bytes(2, byteorder='little', signed=False))
            equip[0x362:0x364] = list(min(equip[0x362] + (equip[0x363] << 8) + rupees[item.name], 9999).to_bytes(2, byteorder='little', signed=False))
        elif item.name in bomb_caps:
            starting_max_bombs = min(starting_max_bombs + bomb_caps[item.name], 50)
        elif item.name in arrow_caps:
            starting_max_arrows = min(starting_max_arrows + arrow_caps[item.name], 70)
        elif item.name in bombs:
            equip[0x343] += bombs[item.name]
        elif item.name in arrows:
            if world.retro[player]:
                equip[0x38E] |= 0x80
                equip[0x377] = 1
            else:
                equip[0x377] += arrows[item.name]
        elif item.name in ['Piece of Heart', 'Boss Heart Container', 'Sanctuary Heart Container']:
            if item.name == 'Piece of Heart':
                equip[0x36B] = (equip[0x36B] + 1) % 4
            if item.name != 'Piece of Heart' or equip[0x36B] == 0:
                equip[0x36C] = min(equip[0x36C] + 0x08, 0xA0)
                equip[0x36D] = min(equip[0x36D] + 0x08, 0xA0)
        else:
            raise RuntimeError(f'Unsupported item in starting equipment: {item.name}')

    equip[0x343] = min(equip[0x343], starting_max_bombs)
    rom.write_byte(0x180034, starting_max_bombs)
    equip[0x377] = min(equip[0x377], starting_max_arrows)
    rom.write_byte(0x180035, starting_max_arrows)
    rom.write_bytes(0x180046, equip[0x360:0x362])
    if equip[0x359]:
        rom.write_byte(0x180043, equip[0x359])

    assert equip[:0x340] == [0] * 0x340
    rom.write_bytes(0x183000, equip[0x340:])
    rom.write_bytes(0x271A6, equip[0x340:0x340+60])

    rom.write_byte(0x18004A, 0x00 if world.mode[player] != 'inverted' else 0x01)  # Inverted mode
    rom.write_byte(0x18005D, 0x00) # Hammer always breaks barrier
    rom.write_byte(0x2AF79, 0xD0 if world.mode[player] != 'inverted' else 0xF0) # vortexes: Normal  (D0=light to dark, F0=dark to light, 42 = both)
    rom.write_byte(0x3A943, 0xD0 if world.mode[player] != 'inverted' else 0xF0) # Mirror: Normal  (D0=Dark to Light, F0=light to dark, 42 = both)
    rom.write_byte(0x3A96D, 0xF0 if world.mode[player] != 'inverted' else 0xD0) # Residual Portal: Normal  (F0= Light Side, D0=Dark Side, 42 = both (Darth Vader))
    rom.write_byte(0x3A9A7, 0xD0) # Residual Portal: Normal  (D0= Light Side, F0=Dark Side, 42 = both (Darth Vader))

    rom.write_bytes(0x180080, [50, 50, 70, 70]) # values to fill for Capacity Upgrades (Bomb5, Bomb10, Arrow5, Arrow10)

    rom.write_byte(0x18004D, ((0x01 if 'arrows' in world.escape_assist[player] else 0x00) |
                              (0x02 if 'bombs' in world.escape_assist[player] else 0x00) |
                              (0x04 if 'magic' in world.escape_assist[player] else 0x00))) # Escape assist

    if world.goal[player] in ['pedestal', 'triforcehunt']:
        rom.write_byte(0x18003E, 0x01)  # make ganon invincible
    elif world.goal[player] in ['dungeons']:
        rom.write_byte(0x18003E, 0x02)  # make ganon invincible until all dungeons are beat
    elif world.goal[player] in ['crystals']:
        rom.write_byte(0x18003E, 0x04)  # make ganon invincible until all crystals
    else:
        rom.write_byte(0x18003E, 0x03)  # make ganon invincible until all crystals and aga 2 are collected

    rom.write_byte(0x18005E, world.crystals_needed_for_gt[player])
    rom.write_byte(0x18005F, world.crystals_needed_for_ganon[player])

    # block HC upstairs doors in rain state in standard mode
    prevent_rain = world.mode[player] == "standard" and world.shuffle[player] != 'vanilla'
    rom.write_byte(0x18008A, 0x01 if prevent_rain else 0x00)
    # block sanc door in rain state and the dungeon is not vanilla
    rom.write_byte(0x13f0fa, 0x01 if world.mode[player] == "standard" and world.doorShuffle[player] != 'vanilla' else 0x00)

    if prevent_rain:
        portals = [world.get_portal('Hyrule Castle East', player), world.get_portal('Hyrule Castle West', player)]
        for idx, portal in enumerate(portals):
            x = idx*2
            room_idx = portal.door.roomIndex
            room = world.get_room(room_idx, player)
            write_int16(rom, 0x13f0f0+x, room_idx)
            rom.write_byte(0x13f0f6+x, room.position(portal.door).value)
            rom.write_byte(0x13f0f7+x, room.kind(portal.door).value)

    # Bitfield - enable text box to show with free roaming items
    #
    # ---o bmcs
    # o - enabled for outside dungeon items
    # b - enabled for inside big keys
    # m - enabled for inside maps
    # c - enabled for inside compasses
    # s - enabled for inside small keys
    rom.write_byte(0x18016A, 0x10 | ((0x01 if world.keyshuffle[player] else 0x00)
                                     | (0x02 if world.compassshuffle[player] else 0x00)
                                     | (0x04 if world.mapshuffle[player] else 0x00)
                                     | (0x08 if world.bigkeyshuffle[player] else 0x00)))  # free roaming item text boxes
    rom.write_byte(0x18003B, 0x01 if world.mapshuffle[player] else 0x00)  # maps showing crystals on overworld

    # compasses showing dungeon count
    if world.clock_mode != 'none' or world.dungeon_counters[player] == 'off':
        rom.write_byte(0x18003C, 0x00)  # Currently must be off if timer is on, because they use same HUD location
    elif world.dungeon_counters[player] == 'on':
        rom.write_byte(0x18003C, 0x02)  # always on
    elif world.compassshuffle[player] or world.doorShuffle[player] != 'vanilla' or world.dungeon_counters[player] == 'pickup':
        rom.write_byte(0x18003C, 0x01)  # show on pickup
    else:
        rom.write_byte(0x18003C, 0x00)

     # Bitfield - enable free items to show up in menu
     #
     # ----dcba
     # d - Compass
     # c - Map
     # b - Big Key
     # a - Small Key
     #
    rom.write_byte(0x180045, ((0x01 if world.keyshuffle[player] else 0x00)
                              | (0x02 if world.bigkeyshuffle[player] else 0x00)
                              | (0x04 if world.mapshuffle[player] else 0x00)
                              | (0x08 if world.compassshuffle[player] else 0x00)))  # free roaming items in menu

    # Map reveals
    reveal_bytes = {
        "Eastern Palace": 0x2000,
        "Desert Palace": 0x1000,
        "Tower of Hera": 0x0020,
        "Palace of Darkness": 0x0200,
        "Thieves Town": 0x0010,
        "Skull Woods": 0x0080,
        "Swamp Palace": 0x0400,
        "Ice Palace": 0x0040,
        "Misery Mire'": 0x0100,
        "Turtle Rock": 0x0008,
    }

    def get_reveal_bytes(itemName):
        locations = world.find_items(itemName, player)
        if len(locations) < 1:
            return 0x0000
        location = locations[0]
        if location.parent_region and location.parent_region.dungeon:
            return reveal_bytes.get(location.parent_region.dungeon.name, 0x0000)
        return 0x0000

    write_int16(rom, 0x18017A, get_reveal_bytes('Green Pendant') if world.mapshuffle[player] else 0x0000) # Sahasrahla reveal
    write_int16(rom, 0x18017C, get_reveal_bytes('Crystal 5')|get_reveal_bytes('Crystal 6') if world.mapshuffle[player] else 0x0000) # Bomb Shop Reveal

    rom.write_byte(0x180172, 0x01 if world.retro[player] else 0x00)  # universal keys
    rom.write_byte(0x180175, 0x01 if world.retro[player] else 0x00)  # rupee bow
    rom.write_byte(0x180176, 0x0A if world.retro[player] else 0x00)  # wood arrow cost
    rom.write_byte(0x180178, 0x32 if world.retro[player] else 0x00)  # silver arrow cost
    rom.write_byte(0x301FC, 0xDA if world.retro[player] else 0xE1)  # rupees replace arrows under pots
    rom.write_byte(0x30052, 0xDB if world.retro[player] else 0xE2) # replace arrows in fish prize from bottle merchant
    rom.write_bytes(0xECB4E, [0xA9, 0x00, 0xEA, 0xEA] if world.retro[player] else [0xAF, 0x77, 0xF3, 0x7E])  # Thief steals rupees instead of arrows
    rom.write_bytes(0xF0D96, [0xA9, 0x00, 0xEA, 0xEA] if world.retro[player] else [0xAF, 0x77, 0xF3, 0x7E])  # Pikit steals rupees instead of arrows
    rom.write_bytes(0xEDA5, [0x35, 0x41] if world.retro[player] else [0x43, 0x44])  # Chest game gives rupees instead of arrows
    digging_game_rng = random.randint(1, 30)  # set rng for digging game
    rom.write_byte(0x180020, digging_game_rng)
    rom.write_byte(0xEFD95, digging_game_rng)
    rom.write_byte(0x1800A3, 0x01)  # enable correct world setting behaviour after agahnim kills
    rom.write_byte(0x1800A4, 0x01 if world.logic[player] != 'nologic' else 0x00)  # enable POD EG fix
    rom.write_byte(0x180042, 0x01 if world.save_and_quit_from_boss else 0x00)  # Allow Save and Quit after boss kill

    # remove shield from uncle
    rom.write_bytes(0x6D253, [0x00, 0x00, 0xf6, 0xff, 0x00, 0x0E])
    rom.write_bytes(0x6D25B, [0x00, 0x00, 0xf6, 0xff, 0x00, 0x0E])
    rom.write_bytes(0x6D283, [0x00, 0x00, 0xf6, 0xff, 0x00, 0x0E])
    rom.write_bytes(0x6D28B, [0x00, 0x00, 0xf7, 0xff, 0x00, 0x0E])
    rom.write_bytes(0x6D2CB, [0x00, 0x00, 0xf6, 0xff, 0x02, 0x0E])
    rom.write_bytes(0x6D2FB, [0x00, 0x00, 0xf7, 0xff, 0x02, 0x0E])
    rom.write_bytes(0x6D313, [0x00, 0x00, 0xe4, 0xff, 0x08, 0x0E])

    rom.write_byte(0x18004E, 0)  # Escape Fill (nothing)
    write_int16(rom, 0x180183, 300)  # Escape fill rupee bow
    rom.write_bytes(0x180185, [0, 0, 0])  # Uncle respawn refills (magic, bombs, arrows)
    rom.write_bytes(0x180188, [0, 0, 0])  # Zelda respawn refills (magic, bombs, arrows)
    rom.write_bytes(0x18018B, [0, 0, 0])  # Mantle respawn refills (magic, bombs, arrows)
    bow_max, bomb_max, magic_max = 0, 0, 0
    bow_small, magic_small = 0, 0
    if world.mode[player] == 'standard':
        if uncle_location.item is not None and uncle_location.item.name in ['Bow', 'Progressive Bow']:
            rom.write_byte(0x18004E, 1)  # Escape Fill (arrows)
            write_int16(rom, 0x180183, 300)  # Escape fill rupee bow
            rom.write_bytes(0x180185, [0, 0, 70])  # Uncle respawn refills (magic, bombs, arrows)
            rom.write_bytes(0x180188, [0, 0, 10])  # Zelda respawn refills (magic, bombs, arrows)
            rom.write_bytes(0x18018B, [0, 0, 10])  # Mantle respawn refills (magic, bombs, arrows)
            bow_max, bow_small = 70, 10
        elif uncle_location.item is not None and uncle_location.item.name in ['Bombs (10)']:
            rom.write_byte(0x18004E, 2)  # Escape Fill (bombs)
            rom.write_bytes(0x180185, [0, 50, 0])  # Uncle respawn refills (magic, bombs, arrows)
            rom.write_bytes(0x180188, [0, 3, 0])  # Zelda respawn refills (magic, bombs, arrows)
            rom.write_bytes(0x18018B, [0, 3, 0])  # Mantle respawn refills (magic, bombs, arrows)
            bomb_max = 50
        elif uncle_location.item is not None and uncle_location.item.name in ['Cane of Somaria', 'Cane of Byrna', 'Fire Rod']:
            rom.write_byte(0x18004E, 4)  # Escape Fill (magic)
            rom.write_bytes(0x180185, [0x80, 0, 0])  # Uncle respawn refills (magic, bombs, arrows)
            rom.write_bytes(0x180188, [0x20, 0, 0])  # Zelda respawn refills (magic, bombs, arrows)
            rom.write_bytes(0x18018B, [0x20, 0, 0])  # Mantle respawn refills (magic, bombs, arrows)
            magic_max, magic_small = 0x80, 0x20
        if world.doorShuffle[player] == 'crossed':
            # Uncle respawn refills (magic, bombs, arrows)
            rom.write_bytes(0x180185, [max(0x20, magic_max), max(3, bomb_max), max(10, bow_max)])
            rom.write_bytes(0x180188, [0x20, 3, 10])  # Zelda respawn refills (magic, bombs, arrows)
            rom.write_bytes(0x18018B, [0x20, 3, 10])  # Mantle respawn refills (magic, bombs, arrows)
        elif world.doorShuffle[player] == 'basic':  # just in case a bomb is needed to get to a chest
            rom.write_bytes(0x180185, [max(0x00, magic_max), max(3, bomb_max), max(0, bow_max)])
            rom.write_bytes(0x180188, [magic_small, 3, bow_small])  # Zelda respawn refills (magic, bombs, arrows)
            rom.write_bytes(0x18018B, [magic_small, 3, bow_small])  # Mantle respawn refills (magic, bombs, arrows)

    # patch swamp: Need to enable permanent drain of water as dam or swamp were moved
    rom.write_byte(0x18003D, 0x01 if world.swamp_patch_required[player] else 0x00)

    # powder patch: remove the need to leave the screen after powder, since it causes problems for potion shop at race game
    # temporarally we are just nopping out this check we will conver this to a rom fix soon.
    rom.write_bytes(0x02F539, [0xEA, 0xEA, 0xEA, 0xEA, 0xEA] if world.powder_patch_required[player] else [0xAD, 0xBF, 0x0A, 0xF0, 0x4F])

    # allow smith into multi-entrance caves in appropriate shuffles
    if world.shuffle[player] in ['restricted', 'full', 'crossed', 'insanity'] or (world.shuffle[player] == 'simple' and world.mode[player] == 'inverted'):
        rom.write_byte(0x18004C, 0x01)

    # set correct flag for hera basement item
    hera_basement = world.get_location('Tower of Hera - Basement Cage', player)
    is_small_key_this_dungeon = False
    if hera_basement.item is not None and hera_basement.item.smallkey:
        item_dungeon = hera_basement.item.name.split('(')[1][:-1]
        if item_dungeon == 'Escape':
            item_dungeon = 'Hyrule Castle'
        is_small_key_this_dungeon = hera_basement.parent_region.dungeon.name == item_dungeon
    if is_small_key_this_dungeon:
        rom.write_byte(0x4E3BB, 0xE4)
    else:
        rom.write_byte(0x4E3BB, 0xEB)

    # fix trock doors for reverse entrances
    if world.fix_trock_doors[player]:
        if world.get_door('TR Lazy Eyes SE', player).entranceFlag:
            world.get_room(0x23, player).change(0, DoorKind.CaveEntrance)
        if world.get_door('TR Eye Bridge SW', player).entranceFlag:
            world.get_room(0xd5, player).change(0, DoorKind.CaveEntrance)
        # do this unconditionally - gets overwritten by RoomData in doorShufflemodes
        rom.write_byte(0xFED31, 0x0E)  # preopen bombable exit
        rom.write_byte(0xFEE41, 0x0E)  # preopen bombable exit

    if world.doorShuffle[player] != 'vanilla' or world.keydropshuffle[player]:
        for room in world.rooms:
            if room.player == player and room.modified:
                rom.write_bytes(room.address(), room.rom_data())

    write_strings(rom, world, player, team)

    rom.write_byte(0x18636C, 1 if world.remote_items[player] else 0)

    # set rom name
    # 21 bytes
    from Main import __version__
    # todo: change to DR when Enemizer is okay with DR
    rom.name = bytearray(f'ER{__version__.split("-")[0].replace(".","")[0:3]}_{team+1}_{player}_{world.seed:09}\0', 'utf8')[:21]
    rom.name.extend([0] * (21 - len(rom.name)))
    rom.write_bytes(0x7FC0, rom.name)

    # set player names
    for p in range(1, min(world.players, 255) + 1):
        rom.write_bytes(0x195FFC + ((p - 1) * 32), hud_format_text(world.player_names[p][team]))

    # Write title screen Code
    hashint = int(rom.get_hash(), 16)
    code = [
        (hashint >> 20) & 0x1F,
        (hashint >> 15) & 0x1F,
        (hashint >> 10) & 0x1F,
        (hashint >> 5) & 0x1F,
        hashint & 0x1F,
    ]
    rom.write_bytes(0x180215, code)
    rom.hash = code

    return rom

try:
    import RaceRom
except ImportError:
    RaceRom = None

def patch_race_rom(rom):
    rom.write_bytes(0x180213, [0x01, 0x00]) # Tournament Seed

    if 'RaceRom' in sys.modules:
        RaceRom.encrypt(rom)

def write_custom_shops(rom, world, player):
    shops = [shop for shop in world.shops[player] if shop.custom and shop.region.player == player]

    shop_data = bytearray()
    items_data = bytearray()

    for shop_id, shop in enumerate(shops):
        if shop_id == len(shops) - 1:
            shop_id = 0xFF
        bytes = shop.get_bytes()
        bytes[0] = shop_id
        bytes[-1] = shop.sram_address
        shop_data.extend(bytes)
        # [id][item][price-low][price-high][max][repl_id][repl_price-low][repl_price-high][player][sram]
        for index, item in enumerate(shop.inventory):
            if item is None:
                break
            if world.shopsanity[player] or shop.type == ShopType.TakeAny:
                rom.write_byte(0x186560 + shop.sram_address + index, 1)
            if world.shopsanity[player] and shop.region.name in shop_to_location_table:
                loc_item = world.get_location(shop_to_location_table[shop.region.name][index], player).item
            elif world.shopsanity[player] and shop.region.name in retro_shops:
                loc_item = world.get_location(retro_shops[shop.region.name][index], player).item
            else:
                loc_item = ItemFactory(item['item'], player)
            if (not world.shopsanity[player] and shop.region.name == 'Capacity Upgrade'
               and world.difficulty[player] != 'normal'):
                continue  # skip cap upgrades except in normal/shopsanity
            item_id = loc_item.code
            price = int16_as_bytes(item['price'])
            replace = ItemFactory(item['replacement'], player).code if item['replacement'] else 0xFF
            replace_price = int16_as_bytes(item['replacement_price'])
            item_player = 0 if item['player'] == player else item['player']
            item_data = [shop_id,  item_id] + price + [item['max'], replace] + replace_price + [item_player]
            items_data.extend(item_data)

    rom.write_bytes(0x184800, shop_data)

    items_data.extend([0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF])
    rom.write_bytes(0x184900, items_data)


def hud_format_text(text):
    output = bytes()
    for char in text.lower():
        if 'a' <= char <= 'z':
            output += bytes([0x5d + ord(char) - ord('a'), 0x29])
        elif '0' <= char <= '8':
            output += bytes([0x77 + ord(char) - ord('0'), 0x29])
        elif char == '9':
            output += b'\x4b\x29'
        elif char == ' ':
            output += b'\x7f\x00'
        else:
            output += b'\x2a\x29'
    while len(output) < 32:
        output += b'\x7f\x00'
    return output[:32]


def apply_rom_settings(rom, beep, color, quickswap, fastmenu, disable_music, sprite, ow_palettes, uw_palettes):
    if sprite and not isinstance(sprite, Sprite):
        sprite = Sprite(sprite) if os.path.isfile(sprite) else get_sprite_from_name(sprite)

    # enable instant item menu
    if fastmenu == 'instant':
        rom.write_byte(0x6DD9A, 0x20)
        rom.write_byte(0x6DF2A, 0x20)
        rom.write_byte(0x6E0E9, 0x20)
    else:
        rom.write_byte(0x6DD9A, 0x11)
        rom.write_byte(0x6DF2A, 0x12)
        rom.write_byte(0x6E0E9, 0x12)
    if fastmenu == 'instant':
        rom.write_byte(0x180048, 0xE8)
    elif fastmenu == 'double':
        rom.write_byte(0x180048, 0x10)
    elif fastmenu == 'triple':
        rom.write_byte(0x180048, 0x18)
    elif fastmenu == 'quadruple':
        rom.write_byte(0x180048, 0x20)
    elif fastmenu == 'half':
        rom.write_byte(0x180048, 0x04)
    else:
        rom.write_byte(0x180048, 0x08)

    rom.write_byte(0x18004B, 0x01 if quickswap else 0x00)

    rom.write_byte(0x0CFE18, 0x00 if disable_music else rom.orig_buffer[0x0CFE18] if rom.orig_buffer else 0x70)
    rom.write_byte(0x0CFEC1, 0x00 if disable_music else rom.orig_buffer[0x0CFEC1] if rom.orig_buffer else 0xC0)
    rom.write_bytes(0x0D0000, [0x00, 0x00] if disable_music else rom.orig_buffer[0x0D0000:0x0D0002] if rom.orig_buffer else [0xDA, 0x58])
    rom.write_bytes(0x0D00E7, [0xC4, 0x58] if disable_music else rom.orig_buffer[0x0D00E7:0x0D00E9] if rom.orig_buffer else [0xDA, 0x58])

    rom.write_byte(0x18021A, 1 if disable_music else 0x00)

    # set heart beep rate
    rom.write_byte(0x180033, {'off': 0x00, 'half': 0x40, 'quarter': 0x80, 'normal': 0x20, 'double': 0x10}[beep])

    # set heart color
    if color == 'random':
        color = random.choice(['red', 'blue', 'green', 'yellow'])
    rom.write_byte(0x6FA1E, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x6FA20, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x6FA22, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x6FA24, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x6FA26, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x6FA28, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x6FA2A, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x6FA2C, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x6FA2E, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x6FA30, {'red': 0x24, 'blue': 0x2C, 'green': 0x3C, 'yellow': 0x28}[color])
    rom.write_byte(0x65561, {'red': 0x05, 'blue': 0x0D, 'green': 0x19, 'yellow': 0x09}[color])

    # write link sprite if required
    if sprite is not None:
        write_sprite(rom, sprite)

    default_ow_palettes(rom)
    if ow_palettes == 'random':
        randomize_ow_palettes(rom)
    elif ow_palettes == 'blackout':
        blackout_ow_palettes(rom)

    default_uw_palettes(rom)
    if uw_palettes == 'random':
        randomize_uw_palettes(rom)
    elif uw_palettes == 'blackout':
        blackout_uw_palettes(rom)

    if isinstance(rom, LocalRom):
        rom.write_crc()


def write_sprite(rom, sprite):
    if not sprite.valid:
        return
    rom.write_bytes(0x80000, sprite.sprite)
    rom.write_bytes(0xDD308, sprite.palette)
    rom.write_bytes(0xDEDF5, sprite.glove_palette)

def set_color(rom, address, color, shade):
    r = round(min(color[0], 0xFF) * pow(0.8, shade) * 0x1F / 0xFF)
    g = round(min(color[1], 0xFF) * pow(0.8, shade) * 0x1F / 0xFF)
    b = round(min(color[2], 0xFF) * pow(0.8, shade) * 0x1F / 0xFF)

    rom.write_bytes(address, ((b << 10) | (g << 5) | (r << 0)).to_bytes(2, byteorder='little', signed=False))

def default_ow_palettes(rom):
    if not rom.orig_buffer:
        return
    rom.write_bytes(0xDE604, rom.orig_buffer[0xDE604:0xDEBB4])

    for address in [0x067FB4, 0x067F94, 0x067FC6, 0x067FE6, 0x067FE1, 0x05FEA9, 0x05FEB3]:
        rom.write_bytes(address, rom.orig_buffer[address:address+2])

def randomize_ow_palettes(rom):
    grass, grass2, grass3, dirt, dirt2, water, clouds, dwdirt,\
        dwgrass, dwwater, dwdmdirt, dwdmgrass, dwdmclouds1, dwdmclouds2 = [[random.randint(60, 215) for _ in range(3)] for _ in range(14)]
    dwtree = [c + random.randint(-20, 10) for c in dwgrass]
    treeleaf = [c + random.randint(-20, 10) for c in grass]

    patches = {0x067FB4: (grass, 0), 0x067F94: (grass, 0), 0x067FC6: (grass, 0), 0x067FE6: (grass, 0), 0x067FE1: (grass, 3), 0x05FEA9: (grass, 0), 0x05FEB3: (dwgrass, 1),
               0x0DD4AC: (grass, 2), 0x0DE6DE: (grass2, 2), 0x0DE6E0: (grass2, 1), 0x0DD4AE: (grass2, 1), 0x0DE9FA: (grass2, 1), 0x0DEA0E: (grass2, 1), 0x0DE9FE: (grass2, 0),
               0x0DD3D2: (grass2, 2), 0x0DE88C: (grass2, 2), 0x0DE8A8: (grass2, 2), 0x0DE9F8: (grass2, 2), 0x0DEA4E: (grass2, 2), 0x0DEAF6: (grass2, 2), 0x0DEB2E: (grass2, 2), 0x0DEB4A: (grass2, 2),
               0x0DE892: (grass, 1), 0x0DE886: (grass, 0), 0x0DE6D2: (grass, 0), 0x0DE6FA: (grass, 3), 0x0DE6FC: (grass, 0), 0x0DE6FE: (grass, 0), 0x0DE70A: (grass, 0), 0x0DE708: (grass, 2), 0x0DE70C: (grass, 1),
               0x0DE6D4: (dirt, 2), 0x0DE6CA: (dirt, 5), 0x0DE6CC: (dirt, 4), 0x0DE6CE: (dirt, 3), 0x0DE6E2: (dirt, 2), 0x0DE6D8: (dirt, 5), 0x0DE6DA: (dirt, 4), 0x0DE6DC: (dirt, 2),
               0x0DE6F0: (dirt, 2), 0x0DE6E6: (dirt, 5), 0x0DE6E8: (dirt, 4), 0x0DE6EA: (dirt, 2), 0x0DE6EC: (dirt, 4), 0x0DE6EE: (dirt, 2),
               0x0DE91E: (grass, 0),
               0x0DE920: (dirt, 2), 0x0DE916: (dirt, 3), 0x0DE934: (dirt, 3),
               0x0DE92C: (grass, 0), 0x0DE93A: (grass, 0), 0x0DE91C: (grass, 1), 0x0DE92A: (grass, 1), 0x0DEA1C: (grass, 0), 0x0DEA2A: (grass, 0), 0x0DEA30: (grass, 0),
               0x0DEA2E: (dirt, 5),
               0x0DE884: (grass, 3), 0x0DE8AE: (grass, 3), 0x0DE8BE: (grass, 3), 0x0DE8E4: (grass, 3), 0x0DE938: (grass, 3), 0x0DE9C4: (grass, 3), 0x0DE6D0: (grass, 4),
               0x0DE890: (treeleaf, 1), 0x0DE894: (treeleaf, 0),
               0x0DE924: (water, 3), 0x0DE668: (water, 3), 0x0DE66A: (water, 2), 0x0DE670: (water, 1), 0x0DE918: (water, 1), 0x0DE66C: (water, 0), 0x0DE91A: (water, 0), 0x0DE92E: (water, 1), 0x0DEA1A: (water, 1), 0x0DEA16: (water, 3), 0x0DEA10: (water, 4),
               0x0DE66E: (dirt, 3), 0x0DE672: (dirt, 2), 0x0DE932: (dirt, 4), 0x0DE936: (dirt, 2), 0x0DE93C: (dirt, 1),
               0x0DE756: (dirt2, 4), 0x0DE764: (dirt2, 4), 0x0DE772: (dirt2, 4), 0x0DE994: (dirt2, 4), 0x0DE9A2: (dirt2, 4), 0x0DE758: (dirt2, 3), 0x0DE766: (dirt2, 3), 0x0DE774: (dirt2, 3),
               0x0DE996: (dirt2, 3), 0x0DE9A4: (dirt2, 3), 0x0DE75A: (dirt2, 2), 0x0DE768: (dirt2, 2), 0x0DE776: (dirt2, 2), 0x0DE778: (dirt2, 2), 0x0DE998: (dirt2, 2), 0x0DE9A6: (dirt2, 2),
               0x0DE9AC: (dirt2, 1), 0x0DE99E: (dirt2, 1), 0x0DE760: (dirt2, 1), 0x0DE77A: (dirt2, 1), 0x0DE77C: (dirt2, 1), 0x0DE798: (dirt2, 1), 0x0DE980: (dirt2, 1),
               0x0DE75C: (grass3, 2), 0x0DE786: (grass3, 2), 0x0DE794: (grass3, 2), 0x0DE99A: (grass3, 2), 0x0DE75E: (grass3, 1), 0x0DE788: (grass3, 1), 0x0DE796: (grass3, 1), 0x0DE99C: (grass3, 1),
               0x0DE76A: (clouds, 2), 0x0DE9A8: (clouds, 2), 0x0DE76E: (clouds, 0), 0x0DE9AA: (clouds, 0), 0x0DE8DA: (clouds, 0), 0x0DE8D8: (clouds, 0), 0x0DE8D0: (clouds, 0), 0x0DE98C: (clouds, 2), 0x0DE990: (clouds, 0),
               0x0DEB34: (dwtree, 4), 0x0DEB30: (dwtree, 3), 0x0DEB32: (dwtree, 1),
               0x0DE710: (dwdirt, 5), 0x0DE71E: (dwdirt, 5), 0x0DE72C: (dwdirt, 5), 0x0DEAD6: (dwdirt, 5), 0x0DE712: (dwdirt, 4), 0x0DE720: (dwdirt, 4), 0x0DE72E: (dwdirt, 4), 0x0DE660: (dwdirt, 4),
               0x0DEAD8: (dwdirt, 4), 0x0DEADA: (dwdirt, 3), 0x0DE714: (dwdirt, 3), 0x0DE722: (dwdirt, 3), 0x0DE730: (dwdirt, 3), 0x0DE732: (dwdirt, 3), 0x0DE734: (dwdirt, 2), 0x0DE736: (dwdirt, 2),
               0x0DE728: (dwdirt, 2), 0x0DE71A: (dwdirt, 2), 0x0DE664: (dwdirt, 2), 0x0DEAE0: (dwdirt, 2),
               0x0DE716: (dwgrass, 3), 0x0DE740: (dwgrass, 3), 0x0DE74E: (dwgrass, 3), 0x0DEAC0: (dwgrass, 3), 0x0DEACE: (dwgrass, 3), 0x0DEADC: (dwgrass, 3), 0x0DEB24: (dwgrass, 3), 0x0DE752: (dwgrass, 2),
               0x0DE718: (dwgrass, 1), 0x0DE742: (dwgrass, 1), 0x0DE750: (dwgrass, 1), 0x0DEB26: (dwgrass, 1), 0x0DEAC2: (dwgrass, 1), 0x0DEAD0: (dwgrass, 1), 0x0DEADE: (dwgrass, 1),
               0x0DE65A: (dwwater, 5), 0x0DE65C: (dwwater, 3), 0x0DEAC8: (dwwater, 3), 0x0DEAD2: (dwwater, 2), 0x0DEABC: (dwwater, 2), 0x0DE662: (dwwater, 2), 0x0DE65E: (dwwater, 1), 0x0DEABE: (dwwater, 1), 0x0DEA98: (dwwater, 2),
               0x0DE79A: (dwdmdirt, 6), 0x0DE7A8: (dwdmdirt, 6), 0x0DE7B6: (dwdmdirt, 6), 0x0DEB60: (dwdmdirt, 6), 0x0DEB6E: (dwdmdirt, 6), 0x0DE93E: (dwdmdirt, 6), 0x0DE94C: (dwdmdirt, 6), 0x0DEBA6: (dwdmdirt, 6),
               0x0DE79C: (dwdmdirt, 4), 0x0DE7AA: (dwdmdirt, 4), 0x0DE7B8: (dwdmdirt, 4), 0x0DEB70: (dwdmdirt, 4), 0x0DEBA8: (dwdmdirt, 4), 0x0DEB72: (dwdmdirt, 3), 0x0DEB74: (dwdmdirt, 3), 0x0DE79E: (dwdmdirt, 3), 0x0DE7AC: (dwdmdirt, 3), 0x0DEBAA: (dwdmdirt, 3), 0x0DE7A0: (dwdmdirt, 3),
               0x0DE7BC: (dwdmgrass, 3),
               0x0DEBAC: (dwdmdirt, 2), 0x0DE7AE: (dwdmdirt, 2), 0x0DE7C2: (dwdmdirt, 2), 0x0DE7A6: (dwdmdirt, 2), 0x0DEB7A: (dwdmdirt, 2), 0x0DEB6C: (dwdmdirt, 2), 0x0DE7C0: (dwdmdirt, 2),
               0x0DE7A2: (dwdmgrass, 3), 0x0DE7BE: (dwdmgrass, 3), 0x0DE7CC: (dwdmgrass, 3), 0x0DE7DA: (dwdmgrass, 3), 0x0DEB6A: (dwdmgrass, 3), 0x0DE948: (dwdmgrass, 3), 0x0DE956: (dwdmgrass, 3), 0x0DE964: (dwdmgrass, 3), 0x0DE7CE: (dwdmgrass, 1), 0x0DE7A4: (dwdmgrass, 1), 0x0DEBA2: (dwdmgrass, 1), 0x0DEBB0: (dwdmgrass, 1),
               0x0DE644: (dwdmclouds1, 2), 0x0DEB84: (dwdmclouds1, 2), 0x0DE648: (dwdmclouds1, 1), 0x0DEB88: (dwdmclouds1, 1),
               0x0DEBAE: (dwdmclouds2, 2), 0x0DE7B0: (dwdmclouds2, 2), 0x0DE7B4: (dwdmclouds2, 0), 0x0DEB78: (dwdmclouds2, 0), 0x0DEBB2: (dwdmclouds2, 0)
               }
    for address, (color, shade) in patches.items():
        set_color(rom, address, color, shade)

def blackout_ow_palettes(rom):
    rom.write_bytes(0xDE604, [0] * 0xC4)
    for i in range(0xDE6C8, 0xDE86C, 70):
        rom.write_bytes(i, [0] * 64)
        rom.write_bytes(i+66, [0] * 4)
    rom.write_bytes(0xDE86C, [0] * 0x348)

    for address in [0x067FB4, 0x067F94, 0x067FC6, 0x067FE6, 0x067FE1, 0x05FEA9, 0x05FEB3]:
        rom.write_bytes(address, [0,0])

def default_uw_palettes(rom):
    if not rom.orig_buffer:
        return
    rom.write_bytes(0xDD734, rom.orig_buffer[0xDD734:0xDE544])

def randomize_uw_palettes(rom):
    for dungeon in range(20):
        wall, pot, chest, floor1, floor2, floor3 = [[random.randint(60, 240) for _ in range(3)] for _ in range(6)]

        for i in range(5):
            shade = 10 - (i * 2)
            set_color(rom, 0x0DD734 + (0xB4 * dungeon) + (i * 2), wall, shade)
            set_color(rom, 0x0DD770 + (0xB4 * dungeon) + (i * 2), wall, shade)
            set_color(rom, 0x0DD744 + (0xB4 * dungeon) + (i * 2), wall, shade)
            if dungeon == 0:
                set_color(rom, 0x0DD7CA + (0xB4 * dungeon) + (i * 2), wall, shade)

        if dungeon == 2:
            set_color(rom, 0x0DD74E + (0xB4 * dungeon), wall, 3)
            set_color(rom, 0x0DD750 + (0xB4 * dungeon), wall, 5)
            set_color(rom, 0x0DD73E + (0xB4 * dungeon), wall, 3)
            set_color(rom, 0x0DD740 + (0xB4 * dungeon), wall, 5)

        set_color(rom, 0x0DD7E4 + (0xB4 * dungeon), wall, 4)
        set_color(rom, 0x0DD7E6 + (0xB4 * dungeon), wall, 2)

        set_color(rom, 0xDD7DA + (0xB4 * dungeon), wall, 10)
        set_color(rom, 0xDD7DC + (0xB4 * dungeon), wall, 8)

        set_color(rom, 0x0DD75A + (0xB4 * dungeon), pot, 7)
        set_color(rom, 0x0DD75C + (0xB4 * dungeon), pot, 1)
        set_color(rom, 0x0DD75E + (0xB4 * dungeon), pot, 3)

        set_color(rom, 0x0DD76A + (0xB4 * dungeon), wall, 7)
        set_color(rom, 0x0DD76C + (0xB4 * dungeon), wall, 2)
        set_color(rom, 0x0DD76E + (0xB4 * dungeon), wall, 4)

        set_color(rom, 0x0DD7AE + (0xB4 * dungeon), chest, 2)
        set_color(rom, 0x0DD7B0 + (0xB4 * dungeon), chest, 0)

        for i in range(3):
            shade = 6 - (i * 2)
            set_color(rom, 0x0DD764 + (0xB4 * dungeon) + (i * 2), floor1, shade)
            set_color(rom, 0x0DD782 + (0xB4 * dungeon) + (i * 2), floor1, shade + 3)

            set_color(rom, 0x0DD7A0 + (0xB4 * dungeon) + (i * 2), floor2, shade)
            set_color(rom, 0x0DD7BE + (0xB4 * dungeon) + (i * 2), floor2, shade + 3)

        set_color(rom, 0x0DD7E2 + (0xB4 * dungeon), floor3, 3)
        set_color(rom, 0x0DD796 + (0xB4 * dungeon), floor3, 4)

def blackout_uw_palettes(rom):
    for i in range(0xDD734, 0xDE544, 180):
        rom.write_bytes(i, [0] * 38)
        rom.write_bytes(i+44, [0] * 76)
        rom.write_bytes(i+136, [0] * 44)

def get_hash_string(hash):
    return ", ".join([hash_alphabet[code & 0x1F] for code in hash])

def write_string_to_rom(rom, target, string):
    address, maxbytes = text_addresses[target]
    rom.write_bytes(address, MultiByteTextMapper.convert(string, maxbytes))


def write_strings(rom, world, player, team):
    tt = TextTable()
    tt.removeUnwantedText()

    # Let's keep this guy's text accurate to the shuffle setting.
    if world.shuffle[player] in ['vanilla', 'dungeonsfull', 'dungeonssimple']:
        tt['kakariko_flophouse_man_no_flippers'] = 'I really hate mowing my yard.\n{PAGEBREAK}\nI should move.'
        tt['kakariko_flophouse_man'] = 'I really hate mowing my yard.\n{PAGEBREAK}\nI should move.'

    def hint_text(dest, ped_hint=False):
        if not dest:
            return "nothing"
        if ped_hint:
            hint = dest.pedestal_hint_text if dest.pedestal_hint_text else "unknown item"
        else:
            if isinstance(dest, Region) and dest.type == RegionType.Dungeon and dest.dungeon:
                hint = dest.dungeon.name
            else:
                hint = dest.hint_text if dest.hint_text else "something"
        if dest.player != player:
            if ped_hint:
                hint += f" for {world.player_names[dest.player][team]}!"
            elif type(dest) in [Region, Location]:
                hint += f" in {world.player_names[dest.player][team]}'s world"
            else:
                hint += f" for {world.player_names[dest.player][team]}"
        return hint

    # For hints, first we write hints about entrances, some from the inconvenient list others from all reasonable entrances.
    if world.hints[player]:
        tt['sign_north_of_links_house'] = '> Randomizer The telepathic tiles can have hints!'
        hint_locations = HintLocations.copy()
        random.shuffle(hint_locations)
        all_entrances = [entrance for entrance in world.get_entrances() if entrance.player == player]
        random.shuffle(all_entrances)

        #First we take care of the one inconvenient dungeon in the appropriately simple shuffles.
        entrances_to_hint = {}
        entrances_to_hint.update(InconvenientDungeonEntrances)
        if world.shuffle_ganon:
            if world.mode[player] == 'inverted':
                entrances_to_hint.update({'Agahnims Tower': 'The sealed castle door'})
            else:
                entrances_to_hint.update({'Ganons Tower': 'Ganon\'s Tower'})
        if world.shuffle[player] in ['simple', 'restricted', 'restricted_legacy']:
            for entrance in all_entrances:
                if entrance.name in entrances_to_hint:
                    this_hint = entrances_to_hint[entrance.name] + ' leads to ' + hint_text(entrance.connected_region) + '.'
                    tt[hint_locations.pop(0)] = this_hint
                    entrances_to_hint = {}
                    break
        #Now we write inconvenient locations for most shuffles and finish taking care of the less chaotic ones.
        entrances_to_hint.update(InconvenientOtherEntrances)
        if world.shuffle[player] in ['vanilla', 'dungeonssimple', 'dungeonsfull']:
            hint_count = 0
        elif world.shuffle[player] in ['simple', 'restricted', 'restricted_legacy']:
            hint_count = 2
        else:
            hint_count = 4
        for entrance in all_entrances:
            if entrance.name in entrances_to_hint:
                if hint_count > 0:
                    this_hint = entrances_to_hint[entrance.name] + ' leads to ' + hint_text(entrance.connected_region) + '.'
                    tt[hint_locations.pop(0)] = this_hint
                    entrances_to_hint.pop(entrance.name)
                    hint_count -= 1
                else:
                    break

        #Next we handle hints for randomly selected other entrances, curating the selection intelligently based on shuffle.
        if world.shuffle[player] not in ['simple', 'restricted', 'restricted_legacy']:
            entrances_to_hint.update(ConnectorEntrances)
            entrances_to_hint.update(DungeonEntrances)
            if world.mode[player] == 'inverted':
                entrances_to_hint.update({'Ganons Tower': 'The dark mountain tower'})
            else:
                entrances_to_hint.update({'Agahnims Tower': 'The sealed castle door'})
        elif world.shuffle[player] == 'restricted':
            entrances_to_hint.update(ConnectorEntrances)
        entrances_to_hint.update(OtherEntrances)
        entrances_to_hint.update({'Dark Sanctuary Hint': 'The dark sanctuary cave'})
        entrances_to_hint.update({'Big Bomb Shop': 'The old bomb shop'})
        if world.shuffle[player] in ['insanity', 'madness_legacy', 'insanity_legacy']:
            entrances_to_hint.update(InsanityEntrances)
            if world.shuffle_ganon:
                if world.mode[player] == 'inverted':
                    entrances_to_hint.update({'Inverted Pyramid Entrance': 'The extra castle passage'})
                else:
                    entrances_to_hint.update({'Pyramid Ledge': 'The pyramid ledge'})
        hint_count = 4 if world.shuffle[player] not in ['vanilla', 'dungeonssimple', 'dungeonsfull'] else 0
        for entrance in all_entrances:
            if entrance.name in entrances_to_hint:
                if hint_count > 0:
                    this_hint = entrances_to_hint[entrance.name] + ' leads to ' + hint_text(entrance.connected_region) + '.'
                    tt[hint_locations.pop(0)] = this_hint
                    entrances_to_hint.pop(entrance.name)
                    hint_count -= 1
                else:
                    break

        # Next we write a few hints for specific inconvenient locations. We don't make many because in entrance this is highly unpredictable.
        locations_to_hint = InconvenientLocations.copy()
        if world.doorShuffle[player] != 'crossed':
            locations_to_hint.extend(InconvenientDungeonLocations)
        if world.shuffle[player] in ['vanilla', 'dungeonssimple', 'dungeonsfull']:
            locations_to_hint.extend(InconvenientVanillaLocations)
        random.shuffle(locations_to_hint)
        hint_count = 3 if world.shuffle[player] not in ['vanilla', 'dungeonssimple', 'dungeonsfull'] else 5
        hint_count -= 2 if world.doorShuffle[player] == 'crossed' else 0
        del locations_to_hint[hint_count:]
        for location in locations_to_hint:
            if location == 'Swamp Left':
                if random.randint(0, 1) == 0:
                    first_item = hint_text(world.get_location('Swamp Palace - West Chest', player).item)
                    second_item = hint_text(world.get_location('Swamp Palace - Big Key Chest', player).item)
                else:
                    second_item = hint_text(world.get_location('Swamp Palace - West Chest', player).item)
                    first_item = hint_text(world.get_location('Swamp Palace - Big Key Chest', player).item)
                this_hint = ('The westmost chests in Swamp Palace contain ' + first_item + ' and ' + second_item + '.')
                tt[hint_locations.pop(0)] = this_hint
            elif location == 'Mire Left':
                if random.randint(0, 1) == 0:
                    first_item = hint_text(world.get_location('Misery Mire - Compass Chest', player).item)
                    second_item = hint_text(world.get_location('Misery Mire - Big Key Chest', player).item)
                else:
                    second_item = hint_text(world.get_location('Misery Mire - Compass Chest', player).item)
                    first_item = hint_text(world.get_location('Misery Mire - Big Key Chest', player).item)
                this_hint = ('The westmost chests in Misery Mire contain ' + first_item + ' and ' + second_item + '.')
                tt[hint_locations.pop(0)] = this_hint
            elif location == 'Tower of Hera - Big Key Chest':
                this_hint = 'Waiting in the Tower of Hera basement leads to ' + hint_text(world.get_location(location, player).item) + '.'
                tt[hint_locations.pop(0)] = this_hint
            elif location == 'Ganons Tower - Big Chest':
                this_hint = 'The big chest in Ganon\'s Tower contains ' + hint_text(world.get_location(location, player).item) + '.'
                tt[hint_locations.pop(0)] = this_hint
            elif location == 'Thieves\' Town - Big Chest':
                this_hint = 'The big chest in Thieves\' Town contains ' + hint_text(world.get_location(location, player).item) + '.'
                tt[hint_locations.pop(0)] = this_hint
            elif location == 'Ice Palace - Big Chest':
                this_hint = 'The big chest in Ice Palace contains ' + hint_text(world.get_location(location, player).item) + '.'
                tt[hint_locations.pop(0)] = this_hint
            elif location == 'Eastern Palace - Big Key Chest':
                this_hint = 'The antifairy guarded chest in Eastern Palace contains ' + hint_text(world.get_location(location, player).item) + '.'
                tt[hint_locations.pop(0)] = this_hint
            elif location == 'Sahasrahla':
                this_hint = 'Sahasrahla seeks a green pendant for ' + hint_text(world.get_location(location, player).item) + '.'
                tt[hint_locations.pop(0)] = this_hint
            elif location == 'Graveyard Cave':
                this_hint = 'The cave north of the graveyard contains ' + hint_text(world.get_location(location, player).item) + '.'
                tt[hint_locations.pop(0)] = this_hint
            else:
                this_hint = location + ' contains ' + hint_text(world.get_location(location, player).item) + '.'
                tt[hint_locations.pop(0)] = this_hint

        # Adding a guaranteed hint for the Flute in overworld shuffle.
        if world.owShuffle[player] in ['parallel','full']:
            this_location = world.find_items_not_key_only('Ocarina', player)
            if this_location:
                this_hint = this_location[0].item.hint_text + ' can be found ' + hint_text(this_location[0]) + '.'
                tt[hint_locations.pop(0)] = this_hint

        # Lastly we write hints to show where certain interesting items are. It is done the way it is to re-use the silver code and also to give one hint per each type of item regardless of how many exist. This supports many settings well.
        items_to_hint = RelevantItems.copy()
        if world.owShuffle[player] in ['parallel','full']:
            items_to_hint.remove('Ocarina')
        if world.keyshuffle[player]:
            items_to_hint.extend(SmallKeys)
        if world.bigkeyshuffle[player]:
            items_to_hint.extend(BigKeys)
        random.shuffle(items_to_hint)
        hint_count = 5 if world.shuffle[player] not in ['vanilla', 'dungeonssimple', 'dungeonsfull'] else 8
        hint_count += 2 if world.doorShuffle[player] == 'crossed' else 0
        hint_count += 1 if world.owShuffle[player] in ['parallel', 'full'] else 0
        while hint_count > 0:
            this_item = items_to_hint.pop(0)
            this_location = world.find_items_not_key_only(this_item, player)
            random.shuffle(this_location)
            if this_location:
                this_hint = this_location[0].item.hint_text + ' can be found ' + hint_text(this_location[0]) + '.'
                tt[hint_locations.pop(0)] = this_hint
                hint_count -= 1

        # Adding a hint for the Thieves' Town Attic location in Crossed door shuffle.
        if world.doorShuffle[player] in ['crossed']:
            attic_hint = world.get_location("Thieves' Town - Attic", player).parent_region.dungeon.name
            this_hint = 'A cracked floor can be found in ' + attic_hint + '.'
            if world.intensity[player] < 2 and hint_locations[0] == 'telepathic_tile_thieves_town_upstairs':
                tt[hint_locations.pop(1)] = this_hint
            else:
                tt[hint_locations.pop(0)] = this_hint

        # All remaining hint slots are filled with junk hints. It is done this way to ensure the same junk hint isn't selected twice.
        junk_hints = junk_texts.copy()
        random.shuffle(junk_hints)
        for location in hint_locations:
            tt[location] = junk_hints.pop(0)

    # We still need the older hints of course. Those are done here.


    silverarrows = world.find_items('Silver Arrows', player)
    random.shuffle(silverarrows)
    silverarrow_hint = (' %s?' % hint_text(silverarrows[0]).replace('Ganon\'s', 'my')) if silverarrows else '?\nI think not!'
    tt['ganon_phase_3_no_silvers'] = 'Did you find the silver arrows%s' % silverarrow_hint
    tt['ganon_phase_3_no_silvers_alt'] = 'Did you find the silver arrows%s' % silverarrow_hint

    prog_bow_locs = world.find_items('Progressive Bow', player)
    distinguished_prog_bow_loc = next((location for location in prog_bow_locs if location.item.code == 0x65), None)
    progressive_silvers = world.difficulty_requirements[player].progressive_bow_limit >= 2 or world.swords[player] == 'swordless'
    if distinguished_prog_bow_loc:
        prog_bow_locs.remove(distinguished_prog_bow_loc)
        silverarrow_hint = (' %s?' % hint_text(distinguished_prog_bow_loc).replace('Ganon\'s', 'my')) if progressive_silvers else '?\nI think not!'
        tt['ganon_phase_3_no_silvers'] = 'Did you find the silver arrows%s' % silverarrow_hint

    if any(prog_bow_locs):
        silverarrow_hint = (' %s?' % hint_text(random.choice(prog_bow_locs)).replace('Ganon\'s', 'my')) if progressive_silvers else '?\nI think not!'
        tt['ganon_phase_3_no_silvers_alt'] = 'Did you find the silver arrows%s' % silverarrow_hint

    crystal5 = world.find_items('Crystal 5', player)[0]
    crystal6 = world.find_items('Crystal 6', player)[0]
    tt['bomb_shop'] = 'Big Bomb?\nMy supply is blocked until you clear %s and %s.' % (crystal5.hint_text, crystal6.hint_text)

    greenpendant = world.find_items('Green Pendant', player)[0]
    tt['sahasrahla_bring_courage'] = 'I lost my family heirloom in %s' % greenpendant.hint_text

    tt['sign_ganons_tower'] = ('You need %d crystal to enter.' if world.crystals_needed_for_gt[player] == 1 else 'You need %d crystals to enter.') % world.crystals_needed_for_gt[player]

    ganon_crystals_singular = 'You need %d crystal to beat Ganon.'
    ganon_crystals_plural = 'You need %d crystals to beat Ganon.'

    if world.goal[player] == 'ganon':
        ganon_crystals_singular = 'To beat Ganon you must collect %d crystal and defeat his minion at the top of his tower.'
        ganon_crystals_plural = 'To beat Ganon you must collect %d crystals and defeat his minion at the top of his tower.'

    tt['sign_ganon'] = (ganon_crystals_singular if world.crystals_needed_for_ganon[player] == 1 else ganon_crystals_plural) % world.crystals_needed_for_ganon[player]

    if world.goal[player] in ['dungeons']:
        tt['sign_ganon'] = 'You need to complete all the dungeons.'

    tt['uncle_leaving_text'] = Uncle_texts[random.randint(0, len(Uncle_texts) - 1)]
    tt['end_triforce'] = "{NOBORDER}\n" + Triforce_texts[random.randint(0, len(Triforce_texts) - 1)]
    tt['bomb_shop_big_bomb'] = BombShop2_texts[random.randint(0, len(BombShop2_texts) - 1)]

    # this is what shows after getting the green pendant item in rando
    tt['sahasrahla_quest_have_master_sword'] = Sahasrahla2_texts[random.randint(0, len(Sahasrahla2_texts) - 1)]
    tt['blind_by_the_light'] = Blind_texts[random.randint(0, len(Blind_texts) - 1)]

    if world.goal[player] in ['triforcehunt']:
        tt['ganon_fall_in_alt'] = 'Why are you even here?\n You can\'t even hurt me! Get the Triforce Pieces.'
        tt['ganon_phase_3_alt'] = 'Seriously? Go Away, I will not Die.'
        tt['sign_ganon'] = 'Go find the Triforce pieces... Ganon is invincible!'
        tt['murahdahla'] = "Hello @. I\nam Murahdahla, brother of\nSahasrahla and Aginah. Behold the power of\ninvisibility.\n\n\n\n… … …\n\nWait! you can see me? I knew I should have\nhidden in  a hollow tree. If you bring\n%d triforce pieces, I can reassemble it." % int(world.treasure_hunt_count[player])
    elif world.goal[player] in ['pedestal']:
        tt['ganon_fall_in_alt'] = 'Why are you even here?\n You can\'t even hurt me! Your goal is at the pedestal.'
        tt['ganon_phase_3_alt'] = 'Seriously? Go Away, I will not Die.'
        tt['sign_ganon'] = 'You need to get to the pedestal... Ganon is invincible!'
    else:
        tt['ganon_fall_in'] = Ganon1_texts[random.randint(0, len(Ganon1_texts) - 1)]
        tt['ganon_fall_in_alt'] = 'You cannot defeat me until you finish your goal!'
        tt['ganon_phase_3_alt'] = 'Got wax in\nyour ears?\nI can not die!'

    tt['kakariko_tavern_fisherman'] = TavernMan_texts[random.randint(0, len(TavernMan_texts) - 1)]

    pedestalitem = world.get_location('Master Sword Pedestal', player).item
    pedestal_text = 'Some Hot Air' if pedestalitem is None else hint_text(pedestalitem, True) if pedestalitem.pedestal_hint_text is not None else 'Unknown Item'
    tt['mastersword_pedestal_translated'] = pedestal_text
    pedestal_credit_text = 'and the Hot Air' if pedestalitem is None else pedestalitem.pedestal_credit_text if pedestalitem.pedestal_credit_text is not None else 'and the Unknown Item'

    etheritem = world.get_location('Ether Tablet', player).item
    ether_text = 'Some Hot Air' if etheritem is None else hint_text(etheritem, True) if etheritem.pedestal_hint_text is not None else 'Unknown Item'
    tt['tablet_ether_book'] = ether_text
    bombositem = world.get_location('Bombos Tablet', player).item
    bombos_text = 'Some Hot Air' if bombositem is None else hint_text(bombositem, True) if bombositem.pedestal_hint_text is not None else 'Unknown Item'
    tt['tablet_bombos_book'] = bombos_text

    # attic hint
    if world.doorShuffle[player] in ['crossed']:
        attic_hint = world.get_location("Thieves' Town - Attic", player).parent_region.dungeon.name
        tt['blind_not_that_way'] = f'{attic_hint} is too bright for my eyes'
        # see tagalog.asm tables at 957,967 or Follower_HandleTrigger in JPDASM
        # also the baserom table at org $09A4C2 in hooks.asm (Escort text)
        rom.write_byte(0x04a4be, 0xac)  # change the room to blind's room
        rom.write_byte(0x04a526, 0xb8)  # y coordinate, shifted down
        rom.write_byte(0x04a529, 0x19)  # x tile shifted right a few tiles
        rom.write_byte(0x04a52e, 0x06)  # follower set to blind maiden

    # inverted spawn menu changes
    if world.mode[player] == 'inverted':
        tt['menu_start_2'] = "{MENU}\n{SPEED0}\n≥@'s house\n Dark Chapel\n{CHOICE3}"
        tt['menu_start_3'] = "{MENU}\n{SPEED0}\n≥@'s house\n Dark Chapel\n Mountain Cave\n{CHOICE2}"
        tt['intro_main'] = CompressedTextMapper.convert(
                            "{INTRO}\n Episode  III\n{PAUSE3}\n A Link to\n   the Past\n"
                            + "{PAUSE3}\nInverted\n  Randomizer\n{PAUSE3}\nAfter mostly disregarding what happened in the first two games.\n"
                            + "{PAUSE3}\nLink has been transported to the Dark World\n{PAUSE3}\nWhile he was slumbering\n"
                            + "{PAUSE3}\nWhatever will happen?\n{PAUSE3}\n{CHANGEPIC}\nGanon has moved around all the items in Hyrule.\n"
                            + "{PAUSE7}\nYou will have to find all the items necessary to beat Ganon.\n"
                            + "{PAUSE7}\nThis is your chance to be a hero.\n{PAUSE3}\n{CHANGEPIC}\n"
                            + "You must get the 7 crystals to beat Ganon.\n{PAUSE9}\n{CHANGEPIC}", False)
    rom.write_bytes(0xE0000, tt.getBytes())

    credits = Credits()

    sickkiditem = world.get_location('Sick Kid', player).item
    sickkiditem_text = random.choice(SickKid_texts) if sickkiditem is None or sickkiditem.sickkid_credit_text is None else sickkiditem.sickkid_credit_text

    zoraitem = world.get_location('King Zora', player).item
    zoraitem_text = random.choice(Zora_texts) if zoraitem is None or zoraitem.zora_credit_text is None else zoraitem.zora_credit_text

    magicshopitem = world.get_location('Potion Shop', player).item
    magicshopitem_text = random.choice(MagicShop_texts) if magicshopitem is None or magicshopitem.magicshop_credit_text is None else magicshopitem.magicshop_credit_text

    fluteboyitem = world.get_location('Flute Spot', player).item
    fluteboyitem_text = random.choice(FluteBoy_texts) if fluteboyitem is None or fluteboyitem.fluteboy_credit_text is None else fluteboyitem.fluteboy_credit_text

    credits.update_credits_line('castle', 0, random.choice(KingsReturn_texts))
    credits.update_credits_line('sanctuary', 0, random.choice(Sanctuary_texts))

    credits.update_credits_line('kakariko', 0, random.choice(Kakariko_texts).format(random.choice(Sahasrahla_names)))
    credits.update_credits_line('desert', 0, random.choice(DesertPalace_texts))
    credits.update_credits_line('hera', 0, random.choice(MountainTower_texts))
    credits.update_credits_line('house', 0, random.choice(LinksHouse_texts))
    credits.update_credits_line('zora', 0, zoraitem_text)
    credits.update_credits_line('witch', 0, magicshopitem_text)
    credits.update_credits_line('lumberjacks', 0, random.choice(Lumberjacks_texts))
    credits.update_credits_line('grove', 0, fluteboyitem_text)
    credits.update_credits_line('well', 0, random.choice(WishingWell_texts))
    credits.update_credits_line('smithy', 0, random.choice(Blacksmiths_texts))
    credits.update_credits_line('kakariko2', 0, sickkiditem_text)
    credits.update_credits_line('bridge', 0, random.choice(DeathMountain_texts))
    credits.update_credits_line('woods', 0, random.choice(LostWoods_texts))
    credits.update_credits_line('pedestal', 0, pedestal_credit_text)

    (pointers, data) = credits.get_bytes()
    rom.write_bytes(0x181500, data)
    rom.write_bytes(0x76CC0, [byte for p in pointers for byte in [p & 0xFF, p >> 8 & 0xFF]])

def set_inverted_mode(world, player, rom):
    if world.mode[player] == 'inverted':
        # load inverted maps
        for b in range(0x00, 0x82):
            v = rom.buffer[0x153B00 + b]
            rom.buffer[0x153B00 + b] = (v & 0xFE) | ((v + 1) % 2)
    
        rom.write_byte(snes_to_pc(0x0283E0), 0xF0) # residual portals
        rom.write_byte(snes_to_pc(0x02B34D), 0xF0)
        rom.write_byte(snes_to_pc(0x06DB78), 0x8B) # dark-style portal

        rom.write_byte(snes_to_pc(0x0DB3C5), 0xC6) #vortex

        rom.write_byte(snes_to_pc(0x07A3F4), 0xF0) # duck
        rom.write_byte(snes_to_pc(0x08D40C), 0xD0) # morph poof
        rom.write_byte(snes_to_pc(0x0ABFBB), 0x90) # move mirror portal indicator to correct map (0xB0 normally)
        rom.write_byte(snes_to_pc(0x0280A6), 0xD0) # use starting point prompt instead of start at pyramid
        
        write_int16(rom, snes_to_pc(0x02D8D4), 0x112) # change sanctuary spawn point to dark sanc
        rom.write_bytes(snes_to_pc(0x02D8E8), [0x22, 0x22, 0x22, 0x23, 0x04, 0x04, 0x04, 0x05])
        write_int16(rom, snes_to_pc(0x02D91A), 0x0400)
        write_int16(rom, snes_to_pc(0x02D928), 0x222E)
        write_int16(rom, snes_to_pc(0x02D936), 0x229A)
        write_int16(rom, snes_to_pc(0x02D944), 0x0480)
        write_int16(rom, snes_to_pc(0x02D952), 0x00A5)
        write_int16(rom, snes_to_pc(0x02D960), 0x007F)
        rom.write_byte(snes_to_pc(0x02D96D), 0x14)
        rom.write_byte(snes_to_pc(0x02D974), 0x00)
        rom.write_byte(snes_to_pc(0x02D97B), 0xFF)
        rom.write_byte(snes_to_pc(0x02D982), 0x00)
        rom.write_byte(snes_to_pc(0x02D989), 0x02)
        rom.write_byte(snes_to_pc(0x02D990), 0x00)
        write_int16(rom, snes_to_pc(0x02D998), 0x0000)
        write_int16(rom, snes_to_pc(0x02D9A6), 0x005A)
        rom.write_byte(snes_to_pc(0x02D9B3), 0x12)

        if world.shuffle[player] == 'vanilla':
            rom.write_byte(0xDBB73 + 0x23, 0x37)  # switch AT and GT
            rom.write_byte(0xDBB73 + 0x36, 0x24)
            if world.doorShuffle[player] == 'vanilla' or world.intensity[player] < 3:
                write_int16(rom, 0x15AEE + 2*0x38, 0x00E0)
                write_int16(rom, 0x15AEE + 2*0x25, 0x000C)
        
    if (world.mode[player] == 'inverted') != (0x03 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        write_int16(rom, snes_to_pc(0x02E849), 0x0043) #flute spot
        if world.shuffle[player] in ['vanilla', 'dungeonsfull', 'dungeonssimple']:
            rom.write_bytes(snes_to_pc(0x308350), [0x00, 0x00, 0x01]) # mountain cave starts on OW
            
            write_int16(rom, snes_to_pc(0x02D8DE), 0x00F1) # change mountain cave spawn point to just outside old man cave
            rom.write_bytes(snes_to_pc(0x02D910), [0x1F, 0x1E, 0x1F, 0x1F, 0x03, 0x02, 0x03, 0x03])
            write_int16(rom, snes_to_pc(0x02D924), 0x0300)
            write_int16(rom, snes_to_pc(0x02D932), 0x1F10)
            write_int16(rom, snes_to_pc(0x02D940), 0x1FC0)
            write_int16(rom, snes_to_pc(0x02D94E), 0x0378)
            write_int16(rom, snes_to_pc(0x02D95C), 0x0187)
            write_int16(rom, snes_to_pc(0x02D96A), 0x017F)
            rom.write_byte(snes_to_pc(0x02D972), 0x06)
            rom.write_byte(snes_to_pc(0x02D979), 0x00)
            rom.write_byte(snes_to_pc(0x02D980), 0xFF)
            rom.write_byte(snes_to_pc(0x02D987), 0x00)
            rom.write_byte(snes_to_pc(0x02D98E), 0x22)
            rom.write_byte(snes_to_pc(0x02D995), 0x12)
            write_int16(rom, snes_to_pc(0x02D9A2), 0x0000)
            write_int16(rom, snes_to_pc(0x02D9B0), 0x0007)
            rom.write_byte(snes_to_pc(0x02D9B8), 0x12)

            rom.write_bytes(0x180247, [0x00, 0x5A, 0x00, 0x00, 0x00, 0x00, 0x00]) #indicates the overworld door being used for the single entrance spawn point
        
            rom.write_byte(0xDBB73 + 0x6F, 0x07)  # DDM fairy entrance to old man fetch east UW
            write_int16(rom, 0x15AEE + 2*0x18, 0x00F1) # old man fetch UW to DDM fairy entrance
            rom.write_byte(0x15B8C + 0x18, 0x43)
            write_int16(rom, 0x15BDB + 2 * 0x18, 0x1400)
            write_int16(rom, 0x15C79 + 2 * 0x18, 0x0294)
            write_int16(rom, 0x15D17 + 2 * 0x18, 0x0600)
            write_int16(rom, 0x15DB5 + 2 * 0x18, 0x02E8)
            write_int16(rom, 0x15E53 + 2 * 0x18, 0x0678)
            write_int16(rom, 0x15EF1 + 2 * 0x18, 0x0303)
            write_int16(rom, 0x15F8F + 2 * 0x18, 0x0685)
            rom.write_byte(0x1602D + 0x18, 0x0A)
            rom.write_byte(0x1607C + 0x18, 0xF6)
            write_int16(rom, 0x160CB + 2 * 0x18, 0x0000)
            write_int16(rom, 0x16169 + 2 * 0x18, 0x0000)
            
            rom.write_byte(0xDBB73 + 0x06, 0x2E) # old man fetch east entrance to DMD west UW
            write_int16(rom, 0x15AEE + 2*0x08, 0x00E6) # DMD west UW to old man fetch east entrance 
            if (world.mode[player] == 'inverted') != (0x0A in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
                rom.write_byte(0xDBB73 + 0x16, 0x5E) # bumper cave top entrance to DDM Fairy UW
            else:
                rom.write_byte(0xDBB73 + 0x2D, 0x5E) # DMD west entrance to DDM Fairy
    if (world.mode[player] == 'inverted') != (0x05 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        rom.write_bytes(snes_to_pc(0x1BC655), [0x4A, 0x1D, 0x82])  # add warp under rock
    if (world.mode[player] == 'inverted') != (0x07 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        rom.write_bytes(snes_to_pc(0x1BC387), [0xDD, 0xD1])  # add warps under rocks
        rom.write_bytes(snes_to_pc(0x1BD1DD), [0xA4, 0x06, 0x82, 0x9E, 0x06, 0x82, 0xFF, 0xFF]) # add warps under rocks
        rom.write_byte(0x180089, 0x01)  # open TR after exit
        rom.write_bytes(0x0086E, [0x5C, 0x00, 0xA0, 0xA1]) # TR tail
        if world.shuffle[player] in ['vanilla']:
            world.fix_trock_doors[player] = True
    if (world.mode[player] == 'inverted') != (0x0A in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        if world.shuffle[player] in ['vanilla', 'dungeonssimple', 'dungeonsfull']:
            rom.write_byte(0xDBB73 + 0x15, 0x06)  # bumper cave bottom entrance to old man fetch west UW
            write_int16(rom, 0x15AEE + 2*0x17, 0x00F0)  # old man fetch west UW to bumper cave bottom entrance
            rom.write_byte(0xDBB73 + 0x05, 0x16) # old man fetch west entrance to bumper cave bottom UW
            write_int16(rom, 0x15AEE + 2*0x07, 0x00FB) # bumper cave bottom UW to old man fetch west entrance
            rom.write_byte(0xDBB73 + 0x2D, 0x17) # DMD west entrance to bumper cave top UW
            write_int16(rom, 0x15AEE + 2*0x2F, 0x00EB) # bumper cave top UW to DMD west entrance
            if (world.mode[player] == 'inverted') == (0x03 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
                rom.write_byte(0xDBB73 + 0x16, 0x2E) # bumper cave top entrance to DMD west UW
                write_int16(rom, 0x15AEE + 2*0x18, 0x00E6) # DMD west UW to bumper cave top entrance
    if (world.mode[player] == 'inverted') != (0x10 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        rom.write_bytes(snes_to_pc(0x1BC67A), [0x2E, 0x0B, 0x82])  # add warp under rock
    if (world.mode[player] == 'inverted') != (0x16 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        write_int16(rom, snes_to_pc(0x02E84B), 0x0056) #flute spot
    if (world.mode[player] == 'inverted') != (0x18 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        write_int16(rom, snes_to_pc(0x02E84D), 0x0058) #flute spot
        write_int16(rom, snes_to_pc(0x02E8D5), 0x07C8) #flute spot
        write_int16(rom, snes_to_pc(0x02E8F7), 0x01F8) #flute spot
    if (world.mode[player] == 'inverted') != (0x1B in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        write_int16(rom, 0x15AEE + 2 * 0x06, 0x0020)  # post aga hyrule castle spawn
        rom.write_byte(0x15B8C + 0x06, 0x1B)
        write_int16(rom, 0x15BDB + 2 * 0x06, 0x00AE)
        write_int16(rom, 0x15C79 + 2 * 0x06, 0x0610)
        write_int16(rom, 0x15D17 + 2 * 0x06, 0x077E)
        write_int16(rom, 0x15DB5 + 2 * 0x06, 0x0672)
        write_int16(rom, 0x15E53 + 2 * 0x06, 0x07F8)
        write_int16(rom, 0x15EF1 + 2 * 0x06, 0x067D)
        write_int16(rom, 0x15F8F + 2 * 0x06, 0x0803)
        rom.write_byte(0x1602D + 0x06, 0x00)
        rom.write_byte(0x1607C + 0x06, 0xF2)
        write_int16(rom, 0x160CB + 2 * 0x06, 0x0000)
        write_int16(rom, 0x16169 + 2 * 0x06, 0x0000)
        
        write_int16(rom, snes_to_pc(0x02E859), 0x001B)  # move flute spot 9
        write_int16(rom, snes_to_pc(0x02E87B), 0x00AE)
        write_int16(rom, snes_to_pc(0x02E89D), 0x0610)
        write_int16(rom, snes_to_pc(0x02E8BF), 0x077E)
        write_int16(rom, snes_to_pc(0x02E8E1), 0x0672)
        write_int16(rom, snes_to_pc(0x02E903), 0x07F8)
        write_int16(rom, snes_to_pc(0x02E925), 0x067D)
        write_int16(rom, snes_to_pc(0x02E947), 0x0803)
        write_int16(rom, snes_to_pc(0x02E969), 0x0000)
        write_int16(rom, snes_to_pc(0x02E98B), 0xFFF2)

        #new pyramid hole mask position
        rom.write_bytes(snes_to_pc(0x1AF730), [0x6A, 0x9E, 0x0C, 0x00, 0x7A, 0x9E, 0x0C,
                                            0x00, 0x8A, 0x9E, 0x0C, 0x00, 0x6A, 0xAE,
                                            0x0C, 0x00, 0x7A, 0xAE, 0x0C, 0x00, 0x8A,
                                            0xAE, 0x0C, 0x00, 0x67, 0x97, 0x0C, 0x00,
                                            0x8D, 0x97, 0x0C, 0x00])
        
        rom.write_byte(snes_to_pc(0x00D009), 0x31)  # castle hole graphics
        rom.write_byte(snes_to_pc(0x00D0E8), 0xE0)
        rom.write_byte(snes_to_pc(0x00D1C7), 0x00)
        write_int16(rom, snes_to_pc(0x1BE8DA), 0x39AD) # add color for shading for castle hole
        
        #castle hole map16 data
        write_int16s(rom, snes_to_pc(0x0FF1C8), [0x190F, 0x190F, 0x190F, 0x194C, 0x190F,
                                                    0x194B, 0x190F, 0x195C, 0x594B, 0x194C,
                                                    0x19EE, 0x19EE, 0x194B, 0x19EE, 0x19EE,
                                                    0x19EE, 0x594B, 0x190F, 0x595C, 0x190F,
                                                    0x190F, 0x195B, 0x190F, 0x190F, 0x19EE,
                                                    0x19EE, 0x195C, 0x19EE, 0x19EE, 0x19EE,
                                                    0x19EE, 0x595C, 0x595B, 0x190F, 0x190F,
                                                    0x190F])
        write_int16s(rom, snes_to_pc(0x0FA480), [0x190F, 0x196B, 0x9D04, 0x9D04, 0x196B,
                                                    0x190F, 0x9D04, 0x9D04])

        write_int16s(rom, snes_to_pc(0x1BB810), [0x00BE, 0x00C0, 0x013E]) # update pyramid hole entrance
        write_int16s(rom, snes_to_pc(0x1BB836), [0x001B, 0x001B, 0x001B])
        
        write_int16(rom, snes_to_pc(0x308300), 0x0140) #add extra pyramid hole
        write_int16(rom, snes_to_pc(0x308320), 0x001B)
        if world.shuffle[player] in ['vanilla', 'dungeonssimple', 'dungeonsfull']:
            rom.write_byte(snes_to_pc(0x308340), 0x7B)
        
        rom.write_byte(snes_to_pc(0x00DB9D), 0x1A) # make retreat bat gfx available in HC area
        rom.write_byte(snes_to_pc(0x00DC09), 0x1A)

        rom.write_byte(snes_to_pc(0x1AF696), 0xF0)  # bat sprite retreat : bat X position
        rom.write_byte(snes_to_pc(0x1AF6B2), 0x33)  # bat sprite retreat : bat delay
        
        write_int16(rom, snes_to_pc(0x1af504), 0x148B) # prioritize retreat Bat and use 3rd sprite group
        write_int16(rom, snes_to_pc(0x1af50c), 0x149B)
        write_int16(rom, snes_to_pc(0x1af514), 0x14A4)
        write_int16(rom, snes_to_pc(0x1af51c), 0x1489)
        write_int16(rom, snes_to_pc(0x1af524), 0x14AC)
        write_int16(rom, snes_to_pc(0x1af52c), 0x54AC)
        write_int16(rom, snes_to_pc(0x1af534), 0x148C)
        write_int16(rom, snes_to_pc(0x1af53c), 0x548C)
        write_int16(rom, snes_to_pc(0x1af544), 0x1484)
        write_int16(rom, snes_to_pc(0x1af54c), 0x5484)
        write_int16(rom, snes_to_pc(0x1af554), 0x14A2)
        write_int16(rom, snes_to_pc(0x1af55c), 0x54A2)
        write_int16(rom, snes_to_pc(0x1af564), 0x14A0)
        write_int16(rom, snes_to_pc(0x1af56c), 0x54A0)
        write_int16(rom, snes_to_pc(0x1af574), 0x148E)
        write_int16(rom, snes_to_pc(0x1af57c), 0x548E)
        write_int16(rom, snes_to_pc(0x1af584), 0x14AE)
        write_int16(rom, snes_to_pc(0x1af58c), 0x54AE)
        
        rom.write_byte(0xF6E58, 0x80)  # no whirlpool under castle gate
        rom.write_byte(snes_to_pc(0x09D436), 0xF3)  # replace whirlpool with harmless sprite
        
        write_int16(rom, 0xDB96F + 2 * 0x35, 0x001B)  # move pyramid exit door
        write_int16(rom, 0xDBA71 + 2 * 0x35, 0x011C)
        if world.shuffle[player] in ['vanilla', 'dungeonssimple', 'dungeonsfull']:
            rom.write_byte(0xDBB73 + 0x35, 0x36)
        
        if world.shuffle[player] in ['vanilla', 'dungeonssimple', 'dungeonsfull']:
            write_int16(rom, 0x15AEE + 2 * 0x37, 0x0010)  # pyramid exit to new hc area
            rom.write_byte(0x15B8C + 0x37, 0x1B)
            write_int16(rom, 0x15BDB + 2 * 0x37, 0x000E)
            write_int16(rom, 0x15C79 + 2 * 0x37, 0x0600)
            write_int16(rom, 0x15D17 + 2 * 0x37, 0x0676)
            write_int16(rom, 0x15DB5 + 2 * 0x37, 0x0604)
            write_int16(rom, 0x15E53 + 2 * 0x37, 0x06E8)
            write_int16(rom, 0x15EF1 + 2 * 0x37, 0x066D)
            write_int16(rom, 0x15F8F + 2 * 0x37, 0x06F3)
            rom.write_byte(0x1602D + 0x37, 0x00)
            rom.write_byte(0x1607C + 0x37, 0x0A)
            write_int16(rom, 0x160CB + 2 * 0x37, 0x0000)
            write_int16(rom, 0x16169 + 2 * 0x37, 0x811c)
    if (world.mode[player] == 'inverted') != (0x29 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        rom.write_bytes(snes_to_pc(0x06B2AB), [0xF0, 0xE1, 0x05]) #frog pickup on contact
    if (world.mode[player] == 'inverted') != (0x2C in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        write_int16(rom, snes_to_pc(0x02E84F), 0x006C) #flute spot
        if world.shuffle[player] in ['vanilla', 'dungeonssimple', 'dungeonsfull']:
            rom.write_byte(0x15B8C, 0x6C) #exit links at bomb shop area
            rom.write_byte(0xDBB73 + 0x00, 0x53)  # switch bomb shop and links house
            rom.write_byte(0xDBB73 + 0x52, 0x01)
    if (world.mode[player] == 'inverted') != (0x2F in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        write_int16(rom, snes_to_pc(0x02E851), 0x006F) #flute spot
        rom.write_bytes(snes_to_pc(0x1BC80D), [0xB2, 0x0B, 0x82])  # add warp under rock
    if (world.mode[player] == 'inverted') != (0x30 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        write_int16(rom, snes_to_pc(0x02E853), 0x0070) #flute spot
        rom.write_bytes(snes_to_pc(0x1BC81E), [0x94, 0x1D, 0x82])  # add warp under rock
    if (world.mode[player] == 'inverted') != (0x33 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        rom.write_bytes(snes_to_pc(0x1BC3DF), [0xD8, 0xD1])  # add warp under rock
        rom.write_bytes(snes_to_pc(0x1BD1D8), [0xA8, 0x02, 0x82, 0xFF, 0xFF])  # add warp under rock
    if (world.mode[player] == 'inverted') != (0x35 in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        rom.write_bytes(snes_to_pc(0x1BC85A), [0x50, 0x0F, 0x82])  # add warp under rock
    if (world.mode[player] == 'inverted') != (0x3B in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        write_int16(rom, snes_to_pc(0x02E855), 0x007B) #flute spot
    if (world.mode[player] == 'inverted') != (0x3F in world.owswaps[player][0] and world.owSwap[player] == 'mixed'):
        write_int16(rom, snes_to_pc(0x02E857), 0x007F) #flute spot
    
    if world.mode[player] == 'inverted':
        rom.write_byte(0x15B8C + 0x3D, rom.buffer[0x15B8C])  # houlihan exit
        write_int16(rom, 0x15BDB + 2 * 0x3D, rom.buffer[0x15BDB] + (rom.buffer[0x15BDC] << 8))
        write_int16(rom, 0x15C79 + 2 * 0x3D, rom.buffer[0x15C79] + (rom.buffer[0x15C7A] << 8))
        write_int16(rom, 0x15D17 + 2 * 0x3D, rom.buffer[0x15D17] + (rom.buffer[0x15D18] << 8))
        write_int16(rom, 0x15DB5 + 2 * 0x3D, rom.buffer[0x15DB5] + (rom.buffer[0x15DB6] << 8))
        write_int16(rom, 0x15E53 + 2 * 0x3D, rom.buffer[0x15E53] + (rom.buffer[0x15E54] << 8))
        write_int16(rom, 0x15EF1 + 2 * 0x3D, rom.buffer[0x15EF1] + (rom.buffer[0x15EF2] << 8))
        write_int16(rom, 0x15F8F + 2 * 0x3D, rom.buffer[0x15F8F] + (rom.buffer[0x15F90] << 8))
        rom.write_byte(0x1602D + 0x3D, rom.buffer[0x1602D])
        rom.write_byte(0x1607C + 0x3D, rom.buffer[0x1607C])
        write_int16(rom, 0x160CB + 2 * 0x3D, rom.buffer[0x160CB] + (rom.buffer[0x160CC] << 8))
        write_int16(rom, 0x16169 + 2 * 0x3D, rom.buffer[0x16169] + (rom.buffer[0x1616A] << 8))
        
def patch_shuffled_dark_sanc(world, rom, player):
    dark_sanc = world.get_region('Dark Sanctuary Hint', player)
    dark_sanc_entrance = str([i for i in dark_sanc.entrances if i.parent_region.name != 'Menu'][0].name)
    room_id, ow_area, vram_loc, scroll_y, scroll_x, link_y, link_x, camera_y, camera_x, unknown_1, unknown_2, door_1, door_2 = door_addresses[dark_sanc_entrance][1]
    door_index = door_addresses[str(dark_sanc_entrance)][0]

    rom.write_byte(0x180241, 0x01)
    rom.write_byte(0x180248, door_index + 1)
    write_int16(rom, 0x180250, room_id)
    rom.write_byte(0x180252, ow_area)
    write_int16s(rom, 0x180253, [vram_loc, scroll_y, scroll_x, link_y, link_x, camera_y, camera_x])
    rom.write_bytes(0x180262, [unknown_1, unknown_2, 0x00])


def update_compasses(rom, world, player):
    layouts = world.dungeon_layouts[player]
    provided_dungeon = False
    for name, builder in layouts.items():
        dungeon_id = compass_data[name][4]
        rom.write_byte(0x187000 + dungeon_id//2, builder.location_cnt)
        if builder.bk_provided:
            if provided_dungeon:
                logging.getLogger('').warning('Multiple dungeons have forced BKs! Compass code might need updating?')
            rom.write_byte(0x186FFF, dungeon_id)
            provided_dungeon = True
    if not provided_dungeon:
        rom.write_byte(0x186FFF, 0xff)



InconvenientDungeonEntrances = {'Turtle Rock': 'Turtle Rock Main',
                                'Misery Mire': 'Misery Mire',
                                'Ice Palace': 'Ice Palace',
                                'Skull Woods Final Section': 'The back of Skull Woods',
                                }

InconvenientOtherEntrances = {'Death Mountain Return Cave (West)': 'The SW DM foothills cave',
                              'Mimic Cave': 'Mimic Ledge',
                              'Dark World Hammer Peg Cave': 'The rows of pegs',
                              'Pyramid Fairy': 'The crack on the pyramid'
                              }

ConnectorEntrances = {'Elder House (East)': 'Elder House',
                      'Elder House (West)': 'Elder House',
                      'Two Brothers House (East)': 'Eastern Quarreling Brothers\' house',
                      'Old Man Cave (West)': 'The lower DM entrance',
                      'Bumper Cave (Bottom)': 'The lower Bumper Cave',
                      'Superbunny Cave (Top)': 'The summit of dark DM cave',
                      'Superbunny Cave (Bottom)': 'The base of east dark DM',
                      'Hookshot Cave': 'The rock on dark DM',
                      'Two Brothers House (West)': 'The door near the race game',
                      'Old Man Cave (East)': 'The SW-most cave on west DM',
                      'Old Man House (Bottom)': 'A cave with a door on west DM',
                      'Old Man House (Top)': 'The eastmost cave on west DM',
                      'Death Mountain Return Cave (East)': 'The westmost cave on west DM',
                      'Spectacle Rock Cave Peak': 'The highest cave on west DM',
                      'Spectacle Rock Cave': 'The right ledge on west DM',
                      'Spectacle Rock Cave (Bottom)': 'The left ledge on west DM',
                      'Paradox Cave (Bottom)': 'The right paired cave on east DM',
                      'Paradox Cave (Middle)': 'The southmost cave on east DM',
                      'Paradox Cave (Top)': 'The east DM summit cave',
                      'Fairy Ascension Cave (Bottom)': 'The east DM cave behind rocks',
                      'Fairy Ascension Cave (Top)': 'The central ledge on east DM',
                      'Spiral Cave': 'The left ledge on east DM',
                      'Spiral Cave (Bottom)': 'The SWmost cave on east DM'
                      }

DungeonEntrances = {'Eastern Palace': 'Eastern Palace',
                    'Hyrule Castle Entrance (South)': 'The ground level castle door',
                    'Thieves Town': 'Thieves\' Town',
                    'Swamp Palace': 'Swamp Palace',
                    'Dark Death Mountain Ledge (West)': 'The East dark DM connector ledge',
                    'Dark Death Mountain Ledge (East)': 'The East dark DM connector ledge',
                    'Desert Palace Entrance (South)': 'The book sealed passage',
                    'Tower of Hera': 'The Tower of Hera',
                    'Palace of Darkness': 'Palace of Darkness',
                    'Hyrule Castle Entrance (West)': 'The left castle door',
                    'Hyrule Castle Entrance (East)': 'The right castle door',
                    'Desert Palace Entrance (West)': 'The westmost building in the desert',
                    'Desert Palace Entrance (North)': 'The northmost cave in the desert'
                    }

OtherEntrances = {'Blinds Hideout': 'Blind\'s old house',
                  'Lake Hylia Fairy': 'A cave NE of Lake Hylia',
                  'Light Hype Fairy': 'The cave south of your house',
                  'Desert Fairy': 'The cave near the desert',
                  'Chicken House': 'The chicken lady\'s house',
                  'Aginahs Cave': 'The open desert cave',
                  'Sahasrahlas Hut': 'The house near armos',
                  'Cave Shop (Lake Hylia)': 'The cave NW Lake Hylia',
                  'Blacksmiths Hut': 'The old smithery',
                  'Sick Kids House': 'The central house in Kakariko',
                  'Lost Woods Gamble': 'A tree trunk door',
                  'Fortune Teller (Light)': 'A building NE of Kakariko',
                  'Snitch Lady (East)': 'A house guarded by a snitch',
                  'Snitch Lady (West)': 'A house guarded by a snitch',
                  'Bush Covered House': 'A house with an uncut lawn',
                  'Tavern (Front)': 'A building with a backdoor',
                  'Light World Bomb Hut': 'A Kakariko building with no door',
                  'Kakariko Shop': 'The old Kakariko shop',
                  'Mini Moldorm Cave': 'The cave south of Lake Hylia',
                  'Long Fairy Cave': 'The eastmost portal cave',
                  'Good Bee Cave': 'The open cave SE Lake Hylia',
                  '20 Rupee Cave': 'The rock SE Lake Hylia',
                  '50 Rupee Cave': 'The rock near the desert',
                  'Ice Rod Cave': 'The sealed cave SE Lake Hylia',
                  'Library': 'The old library',
                  'Potion Shop': 'The witch\'s building',
                  'Dam': 'The old dam',
                  'Lumberjack House': 'The lumberjack house',
                  'Lake Hylia Fortune Teller': 'The building NW Lake Hylia',
                  'Kakariko Gamble Game': 'The old Kakariko gambling den',
                  'Waterfall of Wishing': 'Going behind the waterfall',
                  'Capacity Upgrade': 'The cave on the island',
                  'Bonk Rock Cave': 'The rock pile near Sanctuary',
                  'Graveyard Cave': 'The graveyard ledge',
                  'Checkerboard Cave': 'The NE desert ledge',
                  'Cave 45': 'The ledge south of haunted grove',
                  'Kings Grave': 'The northeastmost grave',
                  'Bonk Fairy (Light)': 'The rock pile near your home',
                  'Hookshot Fairy': 'The left paired cave on east DM',
				  'Bonk Fairy (Dark)': 'The rock pile near the old bomb shop',
                  'Dark Lake Hylia Fairy': 'The cave NE dark Lake Hylia',
                  'C-Shaped House': 'The NE house in Village of Outcasts',
                  'Dark Death Mountain Fairy': 'The SW cave on dark DM',
                  'Dark Lake Hylia Shop': 'The building NW dark Lake Hylia',
                  'Dark World Shop': 'The hammer sealed building',
                  'Red Shield Shop': 'The fenced in building',
                  'Mire Shed': 'The western hut in the mire',
                  'East Dark World Hint': 'The dark cave near the eastmost portal',
                  'Dark Desert Hint': 'The cave east of the mire',
                  'Spike Cave': 'The ledge cave on west dark DM',
                  'Palace of Darkness Hint': 'The building south of Kiki',
                  'Dark Lake Hylia Ledge Spike Cave': 'The rock SE dark Lake Hylia',
                  'Cave Shop (Dark Death Mountain)': 'The base of east dark DM',
                  'Dark World Potion Shop': 'The building near the catfish',
                  'Archery Game': 'The old archery game',
                  'Dark World Lumberjack Shop': 'The northmost Dark World building',
                  'Hype Cave': 'The cave south of the old bomb shop',
                  'Brewery': 'The Village of Outcasts building with no door',
                  'Dark Lake Hylia Ledge Hint': 'The open cave SE dark Lake Hylia',
                  'Chest Game': 'The westmost building in the Village of Outcasts',
                  'Dark Desert Fairy': 'The eastern hut in the mire',
                  'Dark Lake Hylia Ledge Fairy': 'The sealed cave SE dark Lake Hylia',
                  'Fortune Teller (Dark)': 'The building NE the Village of Outcasts'
                  }

InsanityEntrances = {'Sanctuary': 'Sanctuary',
                     'Lumberjack Tree Cave': 'The cave Behind Lumberjacks',
                     'Lost Woods Hideout Stump': 'The stump in Lost Woods',
                     'North Fairy Cave': 'The cave East of Graveyard',
                     'Bat Cave Cave': 'The cave in eastern Kakariko',
                     'Kakariko Well Cave': 'The cave in northern Kakariko',
                     'Hyrule Castle Secret Entrance Stairs': 'The tunnel near the castle',
                     'Skull Woods First Section Door': 'The southeastmost skull',
                     'Skull Woods Second Section Door (East)': 'The central open skull',
                     'Skull Woods Second Section Door (West)': 'The westmost open skull',
                     'Desert Palace Entrance (East)': 'The eastern building in the desert',
                     'Turtle Rock Isolated Ledge Entrance': 'The isolated ledge on east dark DM',
                     'Bumper Cave (Top)': 'The upper Bumper Cave',
                     'Hookshot Cave Back Entrance': 'The stairs on the floating island'
                     }

HintLocations = ['telepathic_tile_eastern_palace',
                 'telepathic_tile_tower_of_hera_floor_4',
                 'telepathic_tile_spectacle_rock',
                 'telepathic_tile_swamp_entrance',
                 'telepathic_tile_thieves_town_upstairs',
                 'telepathic_tile_misery_mire',
                 'telepathic_tile_palace_of_darkness',
                 'telepathic_tile_desert_bonk_torch_room',
                 'telepathic_tile_castle_tower',
                 'telepathic_tile_ice_large_room',
                 'telepathic_tile_turtle_rock',
                 'telepathic_tile_ice_entrance',
                 'telepathic_tile_ice_stalfos_knights_room',
                 'telepathic_tile_tower_of_hera_entrance',
                 'telepathic_tile_south_east_darkworld_cave',
                 'dark_palace_tree_dude',
                 'dark_sanctuary_hint_0',
                 'dark_sanctuary_hint_1',
                 'dark_sanctuary_yes',
                 'dark_sanctuary_hint_2']

InconvenientLocations = ['Spike Cave',
                         'Sahasrahla',
                         'Purple Chest',
                         'Magic Bat']

InconvenientDungeonLocations = ['Swamp Left',
                                'Mire Left',
                                'Eastern Palace - Big Key Chest',
                                'Tower of Hera - Big Key Chest',
                                'Thieves\' Town - Big Chest',
                                'Ice Palace - Big Chest',
                                'Ganons Tower - Big Chest']

InconvenientVanillaLocations = ['Graveyard Cave',
                                'Mimic Cave']

RelevantItems = ['Bow',
                 'Progressive Bow',
                 'Book of Mudora',
                 'Hammer',
                 'Hookshot',
                 'Magic Mirror',
                 'Ocarina',
                 'Pegasus Boots',
                 'Power Glove',
                 'Cape',
                 'Mushroom',
                 'Shovel',
                 'Lamp',
                 'Magic Powder',
                 'Moon Pearl',
                 'Cane of Somaria',
                 'Fire Rod',
                 'Flippers',
                 'Ice Rod',
                 'Titans Mitts',
                 'Ether',
                 'Bombos',
                 'Quake',
                 'Bottle',
                 'Bottle (Red Potion)',
                 'Bottle (Green Potion)',
                 'Bottle (Blue Potion)',
                 'Bottle (Fairy)',
                 'Bottle (Bee)',
                 'Bottle (Good Bee)',
                 'Master Sword',
                 'Tempered Sword',
                 'Fighter Sword',
                 'Golden Sword',
                 'Progressive Sword',
                 'Progressive Glove',
                 'Master Sword',
                 'Power Star',
                 'Triforce Piece',
                 'Single Arrow',
                 'Blue Mail',
                 'Red Mail',
                 'Progressive Armor',
                 'Blue Boomerang',
                 'Red Boomerang',
                 'Blue Shield',
                 'Red Shield',
                 'Mirror Shield',
                 'Progressive Shield',
                 'Bug Catching Net',
                 'Cane of Byrna',
                 'Magic Upgrade (1/2)',
                 'Magic Upgrade (1/4)'
                 ]

SmallKeys = ['Small Key (Eastern Palace)',
             'Small Key (Escape)',
             'Small Key (Desert Palace)',
             'Small Key (Tower of Hera)',
             'Small Key (Agahnims Tower)',
             'Small Key (Palace of Darkness)',
             'Small Key (Thieves Town)',
             'Small Key (Swamp Palace)',
             'Small Key (Skull Woods)',
             'Small Key (Ice Palace)',
             'Small Key (Misery Mire)',
             'Small Key (Turtle Rock)',
             'Small Key (Ganons Tower)',
             ]

BigKeys = ['Big Key (Eastern Palace)',
           'Big Key (Desert Palace)',
           'Big Key (Tower of Hera)',
           'Big Key (Palace of Darkness)',
           'Big Key (Thieves Town)',
           'Big Key (Swamp Palace)',
           'Big Key (Skull Woods)',
           'Big Key (Ice Palace)',
           'Big Key (Misery Mire)',
           'Big Key (Turtle Rock)',
           'Big Key (Ganons Tower)'
           ]

hash_alphabet = [
    "Bow", "Boomerang", "Hookshot", "Bomb", "Mushroom", "Powder", "Rod", "Pendant", "Bombos", "Ether", "Quake",
    "Lamp", "Hammer", "Shovel", "Ocarina", "Bug Net", "Book", "Bottle", "Potion", "Cane", "Cape", "Mirror", "Boots",
    "Gloves", "Flippers", "Pearl", "Shield", "Tunic", "Heart", "Map", "Compass", "Key"
]

pot_item_room_table_lookup = 0xDB67

###
# Pointer to pot location and contents for each non-empty pot in a supertile
# Format: [(x, y, item)] FF FF (Note: x,y are bit packed to include layer)
pot_item_table = 0xDDE7
pot_item_table_end = 0xE6B0

def write_pots_to_rom(rom, pot_contents):
    n = pot_item_table
    rom.write_bytes(n, [0xFF,0xFF])
    n += 2
    for i in range(0x140):
        if i in pot_contents:
            pots = [pot for pot in pot_contents[i] if pot.item != PotItem.Nothing]
            if len(pots) > 0:
                write_int16(rom, pot_item_room_table_lookup + 2*i, n)
                rom.write_bytes(n, itertools.chain(*((pot.x,pot.y,pot.item) for pot in pots)))
                n += 3*len(pots) + 2
                rom.write_bytes(n - 2, [0xFF,0xFF])
            else:
                write_int16(rom, pot_item_room_table_lookup + 2*i, n-2)
        else:
            write_int16(rom, pot_item_room_table_lookup + 2*i, n-2)
    assert n <= pot_item_table_end