#!/usr/bin/env python3
import shutil
import sys
import os
############
#Options go here.
############
ROM_NAME = "BPEE0.gba" #the name of your rom
OFFSET_TO_PUT = 0x8800000
SEARCH_FREE_SPACE = True #Set to True if you want the script to search for free space;Set to False if you don't want to search for free space as you for example update the engine
CLEAR_ALL_OLDTABLES = True #Set to True if you want to clear all old tables
CLEAR_OLD_MOVETABLE = True #Set to True if you want to clear the old move table
CLEAR_OLD_LEARNSETTABLE = True #Set to True if you want to clear the old learnsets table
CLEAR_OLD_TYPEEFFECTIVENESSTABLE = True #Set to True if you want to clear the old type effectiveness table
CLEAR_OLD_MOVESDESCRIPTIONTABLE = True #Set to True if you want to clear the old move description table
#############
#Options end here.
#############
###############
#Functions start here.
###############
def align_x100(offset):
mod_x100 = offset % 0x100
if mod_x100 != 0x0: #not aligned properly
offset += (0x100 - mod_x100)
return offset
def find_offset_to_put(rom, needed_bytes, start_loc):
offset = start_loc
rom.seek(0, 2)
max_pos = rom.tell()
found_bytes = 0
while found_bytes < needed_bytes:
if offset + found_bytes >= max_pos:
print("End of file reached. Not enough free space.")
return 0
found_bytes += 1
rom.seek(offset + found_bytes)
if rom.read(1) != b'\xFF':
offset = align_x100(offset + found_bytes)
found_bytes = 0
return offset
def file_change_line(file_path, line_to_change, replacement):
file = open(file_path, 'r+')
copy = file.read()
file.seek(0x0)
line_no = 1
for line in file:
if (line_no == line_to_change):
copy = copy.replace(line, replacement)
break
line_no += 1
file.seek(0x0)
file.write(copy)
file.close()
def edit_linker(offset):
file_change_line("linker.ld", 4, "\t\trom : ORIGIN = (0x08000000 + " + hex(offset) + "), LENGTH = 32M\n")
def edit_insert(offset):
file_change_line("./scripts/insert.py", 11, "OFFSET_TO_PUT = " + hex(offset) + '\n')
def build_code():
os.system("python scripts/build.py")
def insert_code():
os.system("python scripts/insert.py")
def clear_from_to(rom, from_, to_):
rom.seek(from_)
for i in range(0, to_ - from_):
rom.write(b'\xFF')
##############
#Functions end here.
##############
with open(ROM_NAME, 'rb+') as rom:
offset = OFFSET_TO_PUT
if SEARCH_FREE_SPACE == True:
offset = find_offset_to_put(rom, 0x50000, align_x100(offset))
edit_linker(offset)
edit_insert(offset)
build_code()
insert_code()
rom.close()
with open("test.gba", 'rb+') as new_rom:
if CLEAR_OLD_MOVETABLE == True or CLEAR_ALL_OLDTABLES == True:
clear_from_to(new_rom, 0x31C898, 0x31D93C)
if CLEAR_OLD_LEARNSETTABLE == True or CLEAR_ALL_OLDTABLES == True:
clear_from_to(new_rom, 0x3230DC, 0x32531C) #clear actual old learnsets
clear_from_to(new_rom, 0x32937C, 0x3299EC) #clear pointers to moves
if CLEAR_OLD_TYPEEFFECTIVENESSTABLE == True or CLEAR_ALL_OLDTABLES == True:
clear_from_to(new_rom, 0x31ACE8, 0x31AE38)
if CLEAR_OLD_MOVESDESCRIPTIONTABLE == True or CLEAR_ALL_OLDTABLES == True:
clear_from_to(new_rom, 0x61C524, 0x61CAAC)
new_rom.close()
