mirror of
https://github.com/pret/poketcg2.git
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384 lines
12 KiB
Python
384 lines
12 KiB
Python
#!/usr/bin/env python
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from __future__ import print_function
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import argparse
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import sys
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from constants import cards
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from constants import decks
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from constants import directions
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from constants import events
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from constants import maps
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from constants import mapgfx
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from constants import npcs
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from constants import sfxs
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from constants import songs
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from script_extractor import sort_and_filter
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from script_extractor import get_bank
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from script_extractor import get_relative_address
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from script_extractor import make_blob
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args = None
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rom = None
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# get absolute pointer stored at an address in the rom
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# if bank is None, assumes the pointer refers to the same bank as the bank it is located in
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def get_pointer(address, bank=None):
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raw_pointer = rom[address + 1] * 0x100 + rom[address]
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if raw_pointer < 0x4000:
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bank = 0
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if bank is None:
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bank = get_bank(address)
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return (raw_pointer % 0x4000) + bank * 0x4000
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def make_address_comment(address):
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if args.address_comments:
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return ": ; {:x} ({:x}:{:x})\n".format(address, get_bank(address), get_relative_address(address))
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else:
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return ":\n"
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def dump_npcs(function_address, map_name_camelcase):
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# the functions should always start with <ld hl, xxx_NPCs>
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if rom[function_address] == 0x21:
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table_start_address = get_pointer(function_address + 1)
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else:
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print("WARN: {}_NPCs table not found in function {:x}".format(map_name_camelcase, function_address))
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return []
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address = table_start_address
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label = map_name_camelcase + "_NPCs"
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output = label + make_address_comment(address)
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current_byte = rom[address]
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while current_byte != 0xff:
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npc_id = npcs[rom[address]]
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x_coord = rom[address+1]
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y_coord = rom[address+2]
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direction = directions[rom[address+3]]
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ptr = get_pointer(address+4)
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raw_ptr = rom[address+4] + (rom[address+5])*0x100
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if args.function_labels:
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output += "\tnpc {}, {}, {}, {}, Func_{:x}\n".format(
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npc_id, x_coord, y_coord, direction, ptr
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)
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else:
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output += "\tnpc {}, {}, {}, {}, ${:x}\n".format(
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npc_id, x_coord, y_coord, direction, raw_ptr
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)
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address += 6
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current_byte = rom[address]
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output += "\tdb $ff\n"
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return [make_blob(table_start_address, output, address+1)]
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def dump_stepevents(function_address, map_name_camelcase):
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# the functions should always have:
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# <ld hl, xxx_StepEvents>
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# <call Func_324d>
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temp = function_address
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while rom[temp] != 0xc9: # ret
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if rom[temp] == 0x21 and rom[temp+3] == 0xcd and rom[temp+4] == 0x4d and rom[temp+5] == 0x32:
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table_start_address = get_pointer(temp + 1)
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break
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temp += 1
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if table_start_address is None:
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print("WARN: {}_StepEvents table not found in function {:x}".format(map_name_camelcase, function_address))
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return []
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address = table_start_address
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label = map_name_camelcase + "_StepEvents"
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output = label + make_address_comment(address)
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current_byte = rom[address]
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while current_byte != 0xff:
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output += dump_ow_coordinate_function(address)
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address += 9
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current_byte = rom[address]
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output += "\tdb $ff\n"
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return [make_blob(table_start_address, output, address+1)]
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def dump_npcinteractions(function_address, map_name_camelcase):
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# the functions should always have:
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# <ld hl, xxx_NPCInteractions>
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# <call Func_328c>
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temp = function_address
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table_start_address = None
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while rom[temp] != 0xc9: # ret
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if rom[temp] == 0x21 and rom[temp+3] == 0xcd and rom[temp+4] == 0x8c and rom[temp+5] == 0x32:
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table_start_address = get_pointer(temp + 1)
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break
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temp += 1
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if table_start_address is None:
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print("WARN: {}_NPCInteractions table not found in function {:x}".format(map_name_camelcase, function_address))
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return []
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address = table_start_address
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label = map_name_camelcase + "_NPCInteractions"
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output = label + make_address_comment(address)
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current_byte = rom[address]
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while current_byte != 0xff:
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npc_id = npcs[rom[address]]
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ptr = get_pointer(address+2)
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bank = rom[address+1]
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raw_ptr = rom[address+2] + (rom[address+3])*0x100
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if args.function_labels:
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output += "\tnpc_script {}, Func_{:x}\n".format(npc_id,ptr)
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else:
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output += "\tnpc_script {}, ${:02x}, ${:x}\n".format(npc_id, bank, raw_ptr)
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address += 4
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current_byte = rom[address]
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output += "\tdb $ff\n"
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return [make_blob(table_start_address, output, address+1)]
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def dump_afterduelscripts(function_address, map_name_camelcase):
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# the functions should always have:
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# <ld hl, xxx_AfterDuelScripts>
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# <ld a, [$d60e]>
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temp = function_address
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table_start_address = None
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while rom[temp] != 0xc9: # ret
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if rom[temp] == 0x21:
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table_start_address = get_pointer(temp + 1)
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break
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temp += 1
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if table_start_address is None:
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print("WARN: {}_AfterDuelScripts table not found in function {:x}".format(map_name_camelcase, function_address))
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return []
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address = table_start_address
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label = map_name_camelcase +"_AfterDuelScripts"
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output = label + make_address_comment(address)
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current_byte = rom[address]
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while current_byte != 0xff:
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npc_id = npcs[rom[address]]
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ptr = get_pointer(address+2)
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bank = rom[address+1]
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raw_ptr = rom[address+2] + (rom[address+3])*0x100
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if args.function_labels:
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output += "\tnpc_script {}, Func_{:x}\n".format(npc_id,ptr)
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else:
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output += "\tnpc_script {}, ${:02x}, ${:x}\n".format(npc_id, bank, raw_ptr)
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address += 4
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current_byte = rom[address]
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output += "\tdb $ff\n"
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return [make_blob(table_start_address, output, address+1)]
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def dump_ow_coordinate_function(address):
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x_coord = rom[address]
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y_coord = rom[address+1]
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a_register = rom[address+2]
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d_register = rom[address+3]
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e_register = rom[address+4]
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b_register = rom[address+5]
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function_addr = get_pointer(address+7, rom[address+6])
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bank = rom[address+6]
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raw_ptr = rom[address+7] + (rom[address+8])*0x100
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# see map_exit macro
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if(function_addr == 0xd3c4):
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output = "\tmap_exit {}, {}, {}, {}, {}, {}\n".format(
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x_coord, y_coord, maps[a_register], d_register, e_register, directions[b_register]
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)
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# see ow_script macro
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elif a_register == 0 and d_register == 0 and e_register == 0 and b_register == 0:
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if args.function_labels:
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output = "\tow_script {}, {}, Func_{:x}\n".format(
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x_coord, y_coord, function_addr
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)
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else:
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output = "\tow_script {}, {}, ${:02x}, ${:x}\n".format(
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x_coord, y_coord, bank, raw_ptr
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)
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# generic case
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else:
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if args.function_labels:
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output = "\t_ow_coordinate_function {}, {}, {}, {}, {}, {}, Func_{:x}\n".format(
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x_coord, y_coord, a_register, d_register, e_register, b_register, function_addr
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)
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else:
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output = "\t_ow_coordinate_function {}, {}, {}, {}, {}, {}, ${:02x}, ${:x}\n".format(
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x_coord, y_coord, a_register, d_register, e_register, b_register, bank, raw_ptr
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)
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return output
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def dump_owinteractions(function_address, map_name_camelcase):
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# the functions should always have:
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# <ld hl, xxx_OWInteractions>
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# <call Func_32bf>
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table_start_address = None
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temp = function_address
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while rom[temp] != 0xc9: # ret
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if rom[temp] == 0x21 and rom[temp+3] == 0xcd and rom[temp+4] == 0xbf and rom[temp+5] == 0x32:
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table_start_address = get_pointer(temp + 1)
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break
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temp += 1
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if table_start_address is None:
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print("WARN: {}_OWInteractions table not found in function {:x}".format(map_name_camelcase,function_address))
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return []
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address = table_start_address
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label = map_name_camelcase + "_OWInteractions"
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output = label + make_address_comment(address)
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current_byte = rom[address]
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while current_byte != 0xff:
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output += dump_ow_coordinate_function(address)
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address += 9
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current_byte = rom[address]
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output += "\tdb $ff\n"
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return [make_blob(table_start_address, output, address+1)]
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def dump_mapscripts_table(address, map_name_camelcase):
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blobs = []
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start_address = address
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output = ""
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label = map_name_camelcase + "_MapScripts"
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output += label + make_address_comment(start_address)
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current_byte = rom[address]
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while current_byte != 0xff:
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script_type = rom[address]
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function_ptr = get_pointer(address+1)
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raw_ptr = rom[address+1] + (rom[address+2])*0x100
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if args.function_labels:
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output += "\tdbw ${:02x}, Func_{:x}\n".format(script_type, function_ptr)
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else:
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output += "\tdbw ${:02x}, ${:04x}\n".format(script_type, raw_ptr)
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if script_type == 6:
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blobs += dump_stepevents(function_ptr, map_name_camelcase)
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elif script_type == 7:
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blobs += dump_npcs(function_ptr, map_name_camelcase)
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elif script_type == 8:
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blobs += dump_npcinteractions(function_ptr, map_name_camelcase)
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blobs += dump_owinteractions(function_ptr, map_name_camelcase)
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elif script_type == 9:
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blobs += dump_afterduelscripts(function_ptr, map_name_camelcase)
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address += 3
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current_byte = rom[address]
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output += "\tdb $ff\n"
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blobs.append(make_blob(start_address, output, address+1))
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return blobs
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def dump_mapheader(start_address, map_name_camelcase):
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blobs = []
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output = ""
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address = start_address
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map_gfx = mapgfx[rom[address]]
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mapscripts_ptr = get_pointer(address+2, rom[address+1])
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music = songs[rom[address+4]]
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output = map_name_camelcase + "_MapHeader" + make_address_comment(start_address)
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output += "\tdb " + map_gfx + "\n"
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output += "\tdba " + map_name_camelcase + "_MapScripts\n"
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output += "\tdb " + music + "\n"
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blobs.append(make_blob(start_address, output, start_address+5))
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blobs += (dump_mapscripts_table(mapscripts_ptr, map_name_camelcase))
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return blobs
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def macro_case_to_pascalcase(name: str):
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return name.replace("MAP", "").replace("_", " ").title().replace(" ", "")
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def dump_mapheadersptrs_table(start_address):
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blobs = []
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output = "MapHeaderPtrs::\n"
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address = start_address
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# there are 0x73 maps in the game
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for i in range(0x73+1):
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current_map = maps[i]
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map_name_camelcase = macro_case_to_pascalcase(current_map)
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map_header_address = get_pointer(address+1, rom[address])
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output += "\tdba " + map_name_camelcase + "_MapHeader\n"
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blobs += dump_mapheader(map_header_address, map_name_camelcase)
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address += 3
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blobs.append(make_blob(start_address, output, address))
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return blobs
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def fill_gap(start, end):
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output = ""
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for address in range(start, end):
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output += "\tdb ${:x}\n".format(rom[address])
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output += "\n"
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return output
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def sort_and_filter(blobs):
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blobs.sort(key=lambda b: (b["start"], b["end"], not b["output"].startswith(";")))
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filtered = []
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for blob, next in zip(blobs, blobs[1:]+[None]):
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if next and blob["start"] == next["start"] and blob["output"] == next["output"]:
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continue
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if next and blob["end"] < next["start"] and get_bank(blob["end"]) == get_bank(next["start"]):
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if args.fill_gaps:
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blob["output"] += fill_gap(blob["end"], next["start"])
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else:
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blob["output"] += "; gap from 0x{:x} to 0x{:x}\n\n".format(blob["end"], next["start"])
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filtered.append(blob)
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if len(filtered) > 0:
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filtered[-1]["output"] = filtered[-1]["output"].rstrip("\n")
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return filtered
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if __name__ == "__main__":
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ap = argparse.ArgumentParser(description="Pokemon TCG 2 Script Extractor")
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ap.add_argument("-a", "--address-comments", action="store_true", help="add address comments after labels")
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ap.add_argument("-b", "--allow-backward-jumps", action="store_true", help="extract scripts that are found before the starting address")
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ap.add_argument("-g", "--fill-gaps", action="store_true", help="use 'db's to fill the gaps between visited locations")
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ap.add_argument("-f", "--function-labels", action="store_true", help="use function labels (Func_xxx) instead of raw bank/addr bytes")
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ap.add_argument("-i", "--ignore-errors", action="store_true", help="silently proceed to the next address if an error occurs")
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ap.add_argument("-r", "--rom", default="baserom.gbc", help="rom file to extract script from")
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ap.add_argument("-s", "--symfile", default="poketcg2.sym", help="symfile to extract symbols from")
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args = ap.parse_args()
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rom = bytearray(open(args.rom, "rb").read())
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blobs = []
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map_header_table_addr = 0xc651
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blobs += dump_mapheadersptrs_table(map_header_table_addr)
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blobs = sort_and_filter(blobs)
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output = ""
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for blob in blobs:
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output += blob["output"]
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print(output)
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