def removeOwlEvents(rom):
# Remove all the owl events from the entity tables.
for room in range(0x100):
re = RoomEditor(rom, room)
if re.hasEntity(0x41):
re.removeEntities(0x41)
re.store(rom)
# Clear texts used by the owl. Potentially reused somewhere else.
rom.texts[0x0D9] = b'\xff' # used by boomerang
# 1 Used by empty chest (master stalfos message)
# 9 used by keysanity items
# 1 used by bowwow in chest
# 1 used by item for other player message
# 2 used by arrow chest messages
# 2 used by tunics
for idx in range(0x0BE, 0x0CE):
rom.texts[idx] = b'\xff'
def patch(self, rom, option, *, multiworld=None):
if option != SWORD or multiworld is not None:
# Set the heart piece data
super().patch(rom, option, multiworld=multiworld)
# Patch the room to contain a heart piece instead of the sword on the beach
re = RoomEditor(rom, 0x0F2)
re.removeEntities(0x31) # remove sword
re.addEntity(5, 5, 0x35) # add heart piece
re.store(rom)
# Prevent shield drops from the like-like from turning into swords.
rom.patch(0x03,
0x1B9C,
ASM("ld a, [$DB4E]"),
ASM("ld a, $01"),
fill_nop=True)
rom.patch(0x03,
0x244D,
ASM("ld a, [$DB4E]"),
ASM("ld a, $01"),
fill_nop=True)
def doubleTrouble(rom):
for n in range(0x316):
if n == 0x2FF:
continue
re = RoomEditor(rom, n)
# Bosses
if re.hasEntity(0x59): # Moldorm (TODO; double heart container drop)
re.removeEntities(0x59)
re.entities += [(3, 2, 0x59), (4, 2, 0x59)]
re.store(rom)
if re.hasEntity(0x5C): # Ghini
re.removeEntities(0x5C)
re.entities += [(3, 2, 0x5C), (4, 2, 0x5C)]
re.store(rom)
if re.hasEntity(0x5B): # slime eye
re.removeEntities(0x5B)
re.entities += [(3, 2, 0x5B), (6, 2, 0x5B)]
re.store(rom)
if re.hasEntity(0x65): # angler fish
re.removeEntities(0x65)
re.entities += [(6, 2, 0x65), (6, 5, 0x65)]
re.store(rom)
# Slime eel bugs out on death if duplicated.
# if re.hasEntity(0x5D): # slime eel
# re.removeEntities(0x5D)
# re.entities += [(6, 2, 0x5D), (6, 5, 0x5D)]
# re.store(rom)
if re.hasEntity(
0x5A): # facade (TODO: Drops two hearts, shared health?)
re.removeEntities(0x5A)
re.entities += [(2, 3, 0x5A), (6, 3, 0x5A)]
re.store(rom)
# Evil eagle causes a crash, and messes up the intro sequence and generally is just a mess if I spawn multiple
# if re.hasEntity(0x63): # evil eagle
# re.removeEntities(0x63)
# re.entities += [(3, 4, 0x63), (2, 4, 0x63)]
# re.store(rom)
# # Remove that links movement is blocked
# rom.patch(0x05, 0x2258, ASM("ldh [$A1], a"), "0000")
# rom.patch(0x05, 0x1AE3, ASM("ldh [$A1], a"), "0000")
# rom.patch(0x05, 0x1C5D, ASM("ldh [$A1], a"), "0000")
# rom.patch(0x05, 0x1C8D, ASM("ldh [$A1], a"), "0000")
# rom.patch(0x05, 0x1CAF, ASM("ldh [$A1], a"), "0000")
if re.hasEntity(0x62): # hot head (TODO: Drops thwo hearts)
re.removeEntities(0x62)
re.entities += [(2, 2, 0x62), (4, 4, 0x62)]
re.store(rom)
if re.hasEntity(0xF9): # hardhit beetle
re.removeEntities(0xF9)
re.entities += [(2, 2, 0xF9), (5, 4, 0xF9)]
re.store(rom)
# Minibosses
if re.hasEntity(0x89):
re.removeEntities(0x89)
re.entities += [(2, 3, 0x89), (6, 3, 0x89)]
re.store(rom)
if re.hasEntity(0x81):
re.removeEntities(0x81)
re.entities += [(2, 3, 0x81), (6, 3, 0x81)]
re.store(rom)
if re.hasEntity(0x60):
dodongo = [e for e in re.entities if e[2] == 0x60]
x = (dodongo[0][0] + dodongo[1][0]) // 2
y = (dodongo[0][1] + dodongo[1][1]) // 2
re.entities += [(x, y, 0x60)]
re.store(rom)
if re.hasEntity(0x8e):
re.removeEntities(0x8e)
re.entities += [(1, 1, 0x8e), (7, 1, 0x8e)]
re.store(rom)
if re.hasEntity(0x92):
re.removeEntities(0x92)
re.entities += [(2, 3, 0x92), (4, 3, 0x92)]
re.store(rom)
if re.hasEntity(0xf4):
re.removeEntities(0xf4)
re.entities += [(2, 1, 0xf4), (6, 1, 0xf4)]
re.store(rom)
if re.hasEntity(0xf8):
re.removeEntities(0xf8)
re.entities += [(2, 2, 0xf8), (6, 2, 0xf8)]
re.store(rom)
if re.hasEntity(0xe4):
re.removeEntities(0xe4)
re.entities += [(5, 2, 0xe4), (5, 5, 0xe4)]
re.store(rom)
if re.hasEntity(0x88): # Armos knight (TODO: double item drop)
re.removeEntities(0x88)
re.entities += [(3, 3, 0x88), (6, 3, 0x88)]
re.store(rom)
if re.hasEntity(
0x87
): # Lanmola (TODO: killing one drops the item, and marks as done)
re.removeEntities(0x87)
re.entities += [(2, 2, 0x87), (1, 1, 0x87)]
re.store(rom)
def removeOwlEvents(rom):
# Remove all the owl events from the entity tables.
for room in range(0x100):
re = RoomEditor(rom, room)
if re.hasEntity(0x41):
re.removeEntities(0x41)
re.store(rom)
# Clear texts used by the owl. Potentially reused somewhere o else.
rom.texts[0x0D9] = b'\xff' # used by boomerang
# 1 Used by empty chest (master stalfos message)
# 8 unused (0x0C0-0x0C7)
# 1 used by bowwow in chest
# 1 used by item for other player message
# 2 used by arrow chest messages
# 2 used by tunics
for idx in range(0x0BE, 0x0CE):
rom.texts[idx] = b'\xff'
# Patch the owl entity into a ghost to allow refill of powder/bombs/arrows
rom.texts[0xC0] = formatText("Everybody hates me, so I give away free things in the hope people will love me. Want something?", ask="Okay No")
rom.texts[0xC1] = formatText("Good for you.")
rom.patch(0x06, 0x27F5, 0x2A77, ASM("""
; Check if we have powder or bombs.
ld e, INV_SIZE
ld hl, $DB00
loop:
ldi a, [hl]
cp $02 ; bombs
jr z, hasProperItem
cp $0C ; powder
jr z, hasProperItem
cp $05 ; bow
jr z, hasProperItem
dec e
jr nz, loop
ret
hasProperItem:
; Render ghost
ld de, sprite
call $3BC0
call $64C6 ; check if game is busy (pops this stack frame if busy)
ldh a, [$E7] ; frame counter
swap a
and $01
call $3B0C ; set entity sprite variant
call $641A ; check collision
ldh a, [$F0] ;entity state
rst 0
dw waitForTalk
dw talking
waitForTalk:
call $645D ; check if talked to
ret nc
ld a, $C0
call $2385 ; open dialog
call $3B12 ; increase entity state
ret
talking:
; Check if we are still talking
ld a, [$C19F]
and a
ret nz
call $3B12 ; increase entity state
ld [hl], $00 ; set to state 0
ld a, [$C177] ; get which option we selected
and a
ret nz
; Give powder
ld a, [$DB4C]
cp $10
jr nc, doNotGivePowder
ld a, $10
ld [$DB4C], a
doNotGivePowder:
ld a, [$DB4D]
cp $10
jr nc, doNotGiveBombs
ld a, $10
ld [$DB4D], a
doNotGiveBombs:
ld a, [$DB45]
cp $10
jr nc, doNotGiveArrows
ld a, $10
ld [$DB45], a
doNotGiveArrows:
ld a, $C1
call $2385 ; open dialog
ret
sprite:
db $76, $09, $78, $09, $7A, $09, $7C, $09
""", 0x67F5), fill_nop=True)
rom.patch(0x20, 0x0322 + 0x41 * 2, "734A", "564B") # Remove the owl init handler
re = RoomEditor(rom, 0x2A3)
re.entities.append((7, 6, 0x41))
re.store(rom)
def fixBowwow(rom, everywhere=False):
### BowWow patches
rom.patch(0x03, 0x1E0E, ASM("ld [$DB56], a"), "", fill_nop=True
) # Do not mark BowWow as kidnapped after we complete dungeon 1.
rom.patch(0x15,
0x06B6,
ASM("ld a, [$DB56]\ncp $80"),
ASM("xor a"),
fill_nop=True) # always load the moblin boss
rom.patch(0x03, 0x182D, ASM("ld a, [$DB56]\ncp $80"),
ASM("ld a, [$DAE2]\nand $10")
) # load the cave moblins if the chest is not opened
rom.patch(0x07, 0x3947, ASM("ld a, [$DB56]\ncp $80"),
ASM("ld a, [$DAE2]\nand $10")
) # load the cave moblin with sword if the chest is not opened
# Modify the moblin cave to contain a chest at the end, which contains bowwow
re = RoomEditor(rom, 0x2E2)
re.removeEntities(0x6D)
re.changeObject(8, 3, 0xA0)
re.store(rom)
# Place bowwow in the chest table
rom.banks[0x14][0x560 + 0x2E2] = 0x81
# Patch bowwow follower sprite to be used from 2nd vram bank
rom.patch(
0x05, 0x001C, b"40034023"
b"42034223"
b"44034603"
b"48034A03"
b"46234423"
b"4A234823"
b"4C034C23", b"500B502B"
b"520B522B"
b"540B560B"
b"580B5A0B"
b"562B542B"
b"5A2B582B"
b"5C0B5C2B")
# Patch to use the chain sprite from second vram bank (however, the chain bugs out various things)
rom.patch(
0x05,
0x0282,
ASM("ld a, $4E\njr nz, $02\nld a, $7E\nld [de], a\ninc de\nld a, $00"),
ASM("ld a, $5E\nld [de], a\ninc de\nld a, $08"),
fill_nop=True)
# Never load the bowwow tiles in the first VRAM bank, as we do not need them.
rom.patch(0x00,
0x2EB0,
ASM("ld a, [$DB56]\ncp $01\nld a, $A4\njr z, $18"),
"",
fill_nop=True)
# Patch the location where bowwow stores chain X/Y positions so it does not conflict with a lot of other things
rom.patch(0x05, 0x00BE, ASM("ld hl, $D100"), ASM("ld hl, $D180"))
rom.patch(0x05, 0x0275, ASM("ld hl, $D100"), ASM("ld hl, $D180"))
rom.patch(0x05, 0x03AD, ASM("ld [$D100], a"), ASM("ld [$D180], a"))
rom.patch(0x05, 0x03BD, ASM("ld de, $D100"), ASM("ld de, $D180"))
rom.patch(0x05, 0x049F, ASM("ld hl, $D100"), ASM("ld hl, $D180"))
rom.patch(0x05, 0x04C2, ASM("ld a, [$D100]"), ASM("ld a, [$D180]"))
rom.patch(0x05, 0x03C0, ASM("ld hl, $D101"), ASM("ld hl, $D181"))
rom.patch(0x05, 0x0418, ASM("ld [$D106], a"), ASM("ld [$D186], a"))
rom.patch(0x05, 0x0423, ASM("ld de, $D106"), ASM("ld de, $D186"))
rom.patch(0x05, 0x0426, ASM("ld hl, $D105"), ASM("ld hl, $D185"))
rom.patch(0x19, 0x3A4E, ASM("ld hl, $D100"), ASM("ld hl, $D180"))
rom.patch(0x19, 0x3A5A, ASM("ld hl, $D110"), ASM("ld hl, $D190"))
rom.patch(0x05, 0x00D9, ASM("ld hl, $D110"), ASM("ld hl, $D190"))
rom.patch(0x05, 0x026E, ASM("ld hl, $D110"), ASM("ld hl, $D190"))
rom.patch(0x05, 0x03BA, ASM("ld [$D110], a"), ASM("ld [$D190], a"))
rom.patch(0x05, 0x03DD, ASM("ld de, $D110"), ASM("ld de, $D190"))
rom.patch(0x05, 0x0480, ASM("ld hl, $D110"), ASM("ld hl, $D190"))
rom.patch(0x05, 0x04B5, ASM("ld a, [$D110]"), ASM("ld a, [$D190]"))
rom.patch(0x05, 0x03E0, ASM("ld hl, $D111"), ASM("ld hl, $D191"))
rom.patch(0x05, 0x0420, ASM("ld [$D116], a"), ASM("ld [$D196], a"))
rom.patch(0x05, 0x044d, ASM("ld de, $D116"), ASM("ld de, $D196"))
rom.patch(0x05, 0x0450, ASM("ld hl, $D115"), ASM("ld hl, $D195"))
rom.patch(0x05, 0x0039, ASM("ld [$D154], a"), "", fill_nop=True
) # normally this stores the index to bowwow, for the kiki fight
rom.patch(0x05, 0x013C, ASM("ld [$D150], a"), ASM("ld [$D197], a"))
rom.patch(0x05, 0x0144, ASM("ld [$D151], a"), ASM("ld [$D198], a"))
rom.patch(0x05, 0x02F9, ASM("ld [$D152], a"), ASM("ld [$D199], a"))
rom.patch(0x05, 0x0335, ASM("ld a, [$D152]"), ASM("ld a, [$D199]"))
rom.patch(0x05, 0x0485, ASM("ld a, [$D151]"), ASM("ld a, [$D198]"))
rom.patch(0x05, 0x04A4, ASM("ld a, [$D150]"), ASM("ld a, [$D197]"))
# Patch the bowwow create code to call our custom check of we are in swamp function.
if everywhere:
# Load followers in dungeons, caves, etc
rom.patch(0x01, 0x1FC1, ASM("ret z"), "", fill_nop=True)
rom.patch(0x01, 0x1FC4, ASM("ret z"), "", fill_nop=True)
rom.patch(0x01, 0x1FC7, ASM("ret z"), "", fill_nop=True)
rom.patch(0x01, 0x1FCA, ASM("ret c"), "", fill_nop=True) # dungeon
rom.patch(0x01, 0x1FBC, ASM("ret nz"), "",
fill_nop=True) # sidescroller
else:
# Patch the bowwow create code to call our custom check of we are in swamp function.
rom.patch(
0x01,
0x211F,
ASM("ldh a, [$F6]\ncp $A7\nret z\nld a, [$DB56]\ncp $01\njr nz, $36"
),
ASM("""
ld a, $07
rst 8
ld a, e
and a
ret z
"""),
fill_nop=True)
# Patch bowwow to not stay around when we move from map to map
rom.patch(0x05,
0x0049,
0x0054,
ASM("""
cp [hl]
jr z, Continue
ld hl, $C280
add hl, bc
ld [hl], b
ret
Continue:
"""),
fill_nop=True)
# Patch madam meow meow to not take bowwow
rom.patch(0x06,
0x1BD7,
ASM("ld a, [$DB66]\nand $02"),
ASM("ld a, $00\nand $02"),
fill_nop=True)
# Patch kiki not to react to bowwow, as bowwow is not with link at this map
rom.patch(0x07,
0x18A8,
ASM("ld a, [$DB56]\ncp $01"),
ASM("ld a, $00\ncp $01"),
fill_nop=True)
# Patch the color dungeon entrance not to check for bowwow
rom.patch(0x02, 0x340D, ASM("ld hl, $DB56\nor [hl]"), "", fill_nop=True)
# Patch richard to ignore bowwow
rom.patch(0x06, 0x006C, ASM("ld a, [$DB56]"), ASM("xor a"), fill_nop=True)
# Patch to modify how bowwow eats enemies, normally it just unloads them, but we call our handler in bank 3E
rom.patch(0x05,
0x03A0,
0x03A8,
ASM("""
push bc
ld b, d
ld c, e
ld a, $08
rst 8
pop bc
ret
"""),
fill_nop=True)
rom.patch(0x05, 0x0387, ASM("ld a, $03\nldh [$F2], a"), "",
fill_nop=True) # remove the default chomp sfx
# Various enemies
rom.banks[0x14][0x1218 + 0xC5] = 0x01 # Urchin
rom.banks[0x14][0x1218 + 0x93] = 0x01 # MadBomber
rom.banks[0x14][0x1218 +
0x51] = 0x01 # Swinging ball&chain golden leaf enemy
rom.banks[0x14][0x1218 + 0xF2] = 0x01 # Color dungeon flying hopper
rom.banks[0x14][0x1218 + 0xF3] = 0x01 # Color dungeon hopper
rom.banks[0x14][0x1218 + 0xE9] = 0x01 # Color dungeon shell
rom.banks[0x14][0x1218 + 0xEA] = 0x01 # Color dungeon shell
rom.banks[0x14][0x1218 + 0xEB] = 0x01 # Color dungeon shell
rom.banks[0x14][0x1218 + 0xEC] = 0x01 # Color dungeon thing
rom.banks[0x14][0x1218 + 0xED] = 0x01 # Color dungeon thing
rom.banks[0x14][0x1218 + 0xEE] = 0x01 # Color dungeon thing
rom.banks[0x14][0x1218 + 0x87] = 0x01 # Lanmola (for D4 key)
rom.banks[0x14][0x1218 + 0x88] = 0x01 # Armos knight (for D6 key)
rom.banks[0x14][0x1218 + 0x16] = 0x01 # Spark
rom.banks[0x14][0x1218 + 0x17] = 0x01 # Spark
rom.banks[0x14][0x1218 + 0x2C] = 0x01 # Spiked beetle
rom.banks[0x14][0x1218 + 0x90] = 0x01 # Three of a kind (screw these guys)
rom.banks[0x14][0x1218 + 0x18] = 0x01 # Pols voice
rom.banks[0x14][0x1218 + 0x50] = 0x01 # Boo buddy
rom.banks[0x14][0x1218 + 0xA2] = 0x01 # Pirana plant
rom.banks[0x14][0x1218 + 0x52] = 0x01 # Tractor device
rom.banks[0x14][0x1218 + 0x53] = 0x01 # Tractor device (D3)
rom.banks[0x14][0x1218 + 0x55] = 0x01 # Bounding bombite
rom.banks[0x14][0x1218 + 0x56] = 0x01 # Timer bombite
rom.banks[0x14][0x1218 + 0x57] = 0x01 # Pairod
rom.banks[0x14][0x1218 + 0x15] = 0x01 # Antifairy
rom.banks[0x14][0x1218 + 0xA0] = 0x01 # Peahat
rom.banks[0x14][0x1218 + 0x9C] = 0x01 # Star
rom.banks[0x14][0x1218 + 0xA1] = 0x01 # Snake
rom.banks[0x14][0x1218 + 0xBD] = 0x01 # Vire
rom.banks[0x14][0x1218 + 0xE4] = 0x01 # Moblin boss
# Bosses
rom.banks[0x14][0x1218 + 0x59] = 0x01 # Moldorm
rom.banks[0x14][0x1218 + 0x5C] = 0x01 # Genie
rom.banks[0x14][0x1218 + 0x5B] = 0x01 # Slime Eye
rom.patch(0x04, 0x0AC4, ASM("ld [hl], $28"),
ASM("ld [hl], $FF")) # give more time before slimeeye unsplits
rom.patch(0x04, 0x0B05, ASM("ld [hl], $50"),
ASM("ld [hl], $FF")) # give more time before slimeeye unsplits
rom.banks[0x14][0x1218 + 0x65] = 0x01 # Angler fish
rom.banks[0x14][0x1218 + 0x5D] = 0x01 # Slime eel
rom.banks[0x14][0x1218 + 0x5A] = 0x01 # Facade
rom.banks[0x14][0x1218 + 0x63] = 0x01 # Eagle
rom.banks[0x14][0x1218 + 0x62] = 0x01 # Hot head
rom.banks[0x14][0x1218 + 0xF9] = 0x01 # Hardhit beetle
rom.banks[0x14][0x1218 + 0xE6] = 0x01 # Nightmare
# Minibosses
rom.banks[0x14][0x1218 + 0x81] = 0x01 # Rolling bones
rom.banks[0x14][0x1218 + 0x89] = 0x01 # Hinox
rom.banks[0x14][0x1218 + 0x8E] = 0x01 # Cue ball
rom.banks[0x14][0x1218 + 0x5E] = 0x01 # Gnoma
rom.banks[0x14][0x1218 + 0x5F] = 0x01 # Master stalfos
rom.banks[0x14][0x1218 + 0x92] = 0x01 # Smasher
rom.banks[0x14][0x1218 + 0xBC] = 0x01 # Grim creeper
rom.banks[0x14][0x1218 + 0xBE] = 0x01 # Blaino
rom.banks[0x14][0x1218 + 0xF8] = 0x01 # Giant buzz blob
rom.banks[0x14][0x1218 + 0xF4] = 0x01 # Avalaunch
# NPCs
rom.banks[0x14][0x1218 + 0x6F] = 0x01 # Dog
rom.banks[0x14][0x1218 + 0x6E] = 0x01 # Butterfly
rom.banks[0x14][0x1218 + 0x6C] = 0x01 # Cucco
rom.banks[0x14][0x1218 + 0x70] = 0x01 # Kid
rom.banks[0x14][0x1218 + 0x71] = 0x01 # Kid
rom.banks[0x14][0x1218 + 0x72] = 0x01 # Kid
rom.banks[0x14][0x1218 + 0x73] = 0x01 # Kid
rom.banks[0x14][0x1218 + 0xD0] = 0x01 # Animal
rom.banks[0x14][0x1218 + 0xD1] = 0x01 # Animal
rom.banks[0x14][0x1218 + 0xD2] = 0x01 # Animal
rom.banks[0x14][0x1218 + 0xD3] = 0x01 # Animal
rom.banks[0x14][0x1218 + 0xFA] = 0x01 # Photographer
def removeOwlEvents(rom):
# Remove all the owl events from the entity tables.
for room in range(0x100):
re = RoomEditor(rom, room)
if re.hasEntity(0x41):
re.removeEntities(0x41)
re.store(rom)
# Clear texts used by the owl. Potentially reused somewhere else.
rom.texts[0x0D9] = b'\xff' # used by boomerang
# 1 Used by empty chest (master stalfos message)
# 8 unused (0x0C0-0x0C7)
# 1 used by bowwow in chest
# 1 used by item for other player message
# 2 used by arrow chest messages
# 2 used by tunics
for idx in range(0x0BE, 0x0CE):
rom.texts[idx] = b'\xff'
# Patch the owl entity to allow refill of powder/bombs
rom.texts[0xC0] = formatText("Hoot!\nHoot!\nOut of stock?", ask="Okay No")
rom.texts[0xC1] = formatText(
"Hoot!\nHoot! Hoot!\nHoot!\nHere are a few things for you.")
rom.patch(0x06,
0x27F5,
0x2A77,
ASM(
"""
; Render owl
ld de, sprite
call $3BC0
call $64C6 ; check if game is busy (pops this stack frame if busy)
ldh a, [$E7] ; frame counter
cp $F0
jr c, eyesOpen
ld a, $01
jr setSpriteVariant
eyesOpen:
xor a
setSpriteVariant:
call $3B0C ; set entity sprite variant
call $641A ; check collision
ldh a, [$F0] ;entity state
rst 0
dw waitForTalk
dw talking
waitForTalk:
call $645D ; check if talked to
ret nc
ld a, $C0
call $2385 ; open dialog
call $3B12 ; increase entity state
ret
talking:
; Check if we are still talking
ld a, [$C19F]
and a
ret nz
call $3B12 ; increase entity state
ld [hl], $00 ; set to state 0
ld a, [$C177] ; get which option we selected
and a
ret nz
; Give powder
ld a, [$DB4C]
cp $10
jr nc, doNotGivePowder
ld a, $10
ld [$DB4C], a
doNotGivePowder:
ld a, [$DB4D]
cp $10
jr nc, doNotGiveBombs
ld a, $10
ld [$DB4D], a
doNotGiveBombs:
ld a, $C1
call $2385 ; open dialog
ret
sprite:
db $78, $01, $78, $21, $7A, $01, $7A, $21
""", 0x67F5),
fill_nop=True)