Leahnaya/pokemon-reverse-engineering-tools
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stop writing 0x4000 everywhere

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This commit is contained in:
Bryan Bishop
2013-11-10 14:13:20 -06:00
parent 271cce5319
commit b36e42494d
1 changed files with 28 additions and 20 deletions
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48
pokemontools/vba/vba.py
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@@ -35,6 +35,21 @@ import vba_wrapper
button_masks = vba_wrapper.core.VBA.button_masks
button_combiner = vba_wrapper.core.VBA.button_combine
def calculate_bank(address):
"""
Which bank does this address exist in?
"""
return address / 0x4000
def calculate_address(address):
"""
Gives the relative address once the bank is loaded.
This is not the same as the calculate_pointer in the
pokemontools.crystal.pointers module.
"""
return (address % 0x4000) + 0x4000
def translate_chars(charz):
"""
Translate a string from the in-game format to readable form. This is
@@ -118,15 +133,15 @@ class crystal(object):
return state
def call(self, address):
def call(self, address, bank=None):
"""
Jumps into a function at a certain address.
Go into the start menu, pause the game and try call(1, 0x1078) to see a
string printed to the screen.
"""
bank = address / 0x4000
address = (address % 0x4000) + 0x4000
if not bank:
bank = calculate_bank(address)
push = [
self.registers.pc,
@@ -619,12 +634,6 @@ class crystal(object):
self.text_wait()
loop_limit -= 1
def broken_start_random_battle(self):
address = None
self.push_stack([self.registers.pc])
self.registers["pc"] = address % 0x4000
self.call(address)
def start_trainer_battle(self, trainer_group=0x1, trainer_id=0x1):
"""
This will fail after the first mon is defeated.
@@ -648,9 +657,10 @@ class crystal(object):
ScriptPos = 0xd43a
memory = self.vba.memory
memory[ScriptBank] = address / 0x4000
memory[ScriptPos] = (((address % 0x4000) + 0x4000) & 0xff00) >> 8
memory[ScriptPos] = ((address % 0x4000) + 0x4000) & 0xff
memory[ScriptBank] = calculate_bank(address)
pointer = calculate_address(address)
memory[ScriptPos] = (calculate_address(address) & 0xff00) >> 8
memory[ScriptPos] = calculate_address(address) & 0xff
# TODO: determine if this is necessary
#memory[ScriptRunning] = 0xff
@@ -681,14 +691,14 @@ class crystal(object):
ScriptPos = 0xd43a
memory = self.vba.memory
memory[ScriptBank] = RockSmashBattleScript_address / 0x4000
memory[ScriptPos] = ((RockSmashBattleScript_address % 0x4000 + 0x4000) & 0xff00) >> 8
memory[ScriptPos+1] = ((RockSmashBattleScript_address % 0x4000 + 0x4000) & 0xff)
memory[ScriptBank] = calculate_bank(RockSmashBattleScript_address)
memory[ScriptPos] = (calculate_address(RockSmashBattleScript_address) & 0xff00) >> 8
memory[ScriptPos+1] = calculate_address(RockSmashBattleScript_address) & 0xff
memory[ScriptRunning] = 0xff
self.vba.memory = memory
self.vba.registers["af"] = ((RockSmashBattleScript_address / 0x4000) << 8) | (self.vba.registers.af & 0xff)
self.vba.registers["hl"] = (RockSmashBattleScript_address % 0x4000) + 0x4000
self.vba.registers["af"] = (calculate_bank(RockSmashBattleScript_address) << 8) | (self.vba.registers.af & 0xff)
self.vba.registers["hl"] = calculate_address(RockSmashBattleScript_address)
self.call(CallScript_address)
#def attempt_start_battle_by_startbattle(self):
@@ -715,9 +725,7 @@ class crystal(object):
#self.call(RockSmashEncounter_address)
#self.push_stack([self.registers.pc])
#memory[ScriptBank] = script / 0x4000
#memory[ScriptPos] = ((script % 0x4000) & 0xff00) >> 8
#memory[ScriptPos+1] = ((script % 0x4000) & 0xff)
#self.set_script(script)
#memory[ScriptRunning] = 0xff
#self.call(start_wild_battle)