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Many updates 

-Set most flags for hard mode (todo: fix shield prices)
-Stop writing a flag that used to set pyramid respawns (it now messes with Cape quarter magic cost in the spike cave)
-KevinCathcart's checksum fix
-KevinCathcart fix for not placing Maps/Compasses
This commit is contained in:
AmazingAmpharos 2017-11-10 04:08:59 -06:00 committed by GitHub
parent f9b456313d
commit 0ebeac5727
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 40 additions and 10 deletions
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50
Rom.py
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@ -67,8 +67,7 @@ class LocalRom(object):
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 write_crc(self):
# this does not seem to work
crc = sum(self.buffer[:0x7FEB] + self.buffer[0x7FF5:]) % 0xFFFF
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])
@ -86,7 +85,7 @@ def patch_rom(world, rom, hashtable, beep='normal', sprite=None):
# Keys in their native dungeon should use the orignal item code for keys
if location.parent_region.dungeon:
dungeon = location.parent_region.dungeon
if location.item.key and dungeon.is_dungeon_item(location.item):
if location.item is not None and location.item.key and dungeon.is_dungeon_item(location.item):
if location.item.type == "BigKey":
itemid = 0x32
if location.item.type == "SmallKey":
@ -164,17 +163,46 @@ def patch_rom(world, rom, hashtable, beep='normal', sprite=None):
# handle difficulty
if world.difficulty == 'hard':
# Spike Cave Damage
rom.write_byte(0x180168, 0x02)
# Powdered Fairies Prize
rom.write_byte(0x36DD0, 0x79) # Bee
rom.write_byte(0x36DD0, 0xD8) # One Heart
# potion heal amount
rom.write_byte(0x180084, 0x28) # Five Hearts
# potion magic restore amount
rom.write_byte(0x180085, 0x40) # Half Magic
#Cape magic cost
rom.write_bytes(0x3ADA7, [0x02, 0x02, 0x02])
#Byrna residual magic cost
rom.write_bytes(0x3ADA7, [0x08, 0x08, 0x08])
#Disable catching fairies
rom.write_byte(0x34FD6, 0x80)
#To-do: Implement shield price hikes
elif world.difficulty == 'expert':
# Powdered Fairies Prize
rom.write_byte(0x36DD0, 0x79) # Bees
# potion heal amount
rom.write_byte(0x180084, 0x08) # One Heart
# potion magic restore amount
rom.write_byte(0x180085, 0x20) # Quarter Magic
#Cape magic cost
rom.write_bytes(0x3ADA7, [0x02, 0x02, 0x02])
#Byrna residual magic cost
rom.write_bytes(0x3ADA7, [0x08, 0x08, 0x08])
#Disable catching fairies
rom.write_byte(0x34FD6, 0x80)
elif world.difficulty == 'insane':
# Powdered Fairies Prize
rom.write_byte(0x36DD0, 0x79) # Bees
# potion heal amount
rom.write_byte(0x180084, 0x00) # No healing
# potion magic restore amount
rom.write_byte(0x180085, 0x00) # No healing
#Cape magic cost
rom.write_bytes(0x3ADA7, [0x02, 0x02, 0x02])
#Byrna residual magic cost
rom.write_bytes(0x3ADA7, [0x08, 0x08, 0x08])
#Disable catching fairies
rom.write_byte(0x34FD6, 0x80)
else:
# Spike Cave Damage
rom.write_byte(0x180168, 0x08)
# Powdered Fairies Prize
rom.write_byte(0x36DD0, 0xE3) # fairy
# potion heal amount
@ -211,7 +239,7 @@ def patch_rom(world, rom, hashtable, beep='normal', sprite=None):
rom.write_bytes(0x37A78, prizes)
# prize pack drop chances
if world.difficulty == 'hard':
if world.difficulty in ['hard', 'expert', 'insane']:
droprates = [0x01, 0x02, 0x03, 0x03, 0x03, 0x04, 0x04] # 50%, 25%, 3* 12.5%, 2* 6.25%
else:
droprates = [0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01] # 50%
@ -305,7 +333,9 @@ def patch_rom(world, rom, hashtable, beep='normal', sprite=None):
rom.write_byte(0x180030, 0x00) # Disable SRAM trace
rom.write_byte(0x180036, 0x0A) # Rupoor negative value
rom.write_byte(0x180169, 0x01 if world.lock_aga_door_in_escape else 0x00) # Lock or unlock aga tower door during escape sequence.
rom.write_byte(0x180170, 0x01 if world.ganon_at_pyramid else 0x00) # Enable respawning on pyramid after ganon death
# This seems to correlate to 1/4 magic Cape cost in the spike cave in v27. Important: figure out where this hack moved.
# rom.write_byte(0x180170, 0x01 if world.ganon_at_pyramid else 0x00) # Enable respawning on pyramid after ganon death
rom.write_byte(0x180168, 0x08) # Spike Cave Damage
rom.write_byte(0x180086, 0x00 if world.aga_randomness else 0x01) # set blue ball and ganon warp randomness
rom.write_byte(0x1800A1, 0x01) # enable overworld screen transition draining for water level inside swamp
if world.goal in ['ganon']: