def write(self, rom: Rom) -> Rom:
# Since there's a LUT and the data that it points to, create two output streams.
# This should work because both are continuous.
data_lut_stream = OutputStream()
shop_inventory = OutputStream()
next_shop_addr = self.shop_data_pointers[0].pointer
start_size = 0
for index in range(51):
new_shop_length = self.shop_inventories[index].write(
shop_inventory)
sdp = self.shop_data_pointers[index]
sdp.contents = (
(sdp.shop_graphic << 4) & 0xf0) | (new_shop_length & 0x0f)
sdp.pointer = next_shop_addr
sdp.write(data_lut_stream)
# Because the size of the data varies by shop, we have to keep track of how
# large the output buffer was and move the pointer up by the difference.
next_shop_addr += (shop_inventory.size() - start_size)
start_size = shop_inventory.size()
# Make a dictionary for the two parts so we only have to write the new Rom once.
patches = {
0x1E070C:
data_lut_stream.get_buffer(),
Rom.pointer_to_offset(self.shop_data_pointers[0].pointer):
shop_inventory.get_buffer()
}
return rom.apply_patches(patches)
def add_credits(rom: Rom) -> Rom:
credits_lut = rom.get_lut(0x1D871C, 128)
base_addr = credits_lut[0]
new_lut = OutputStream()
data_stream = OutputStream()
for index, line in enumerate(CREDITS_TEXT.splitlines()[1:]):
line = line.strip()
if len(line) > 0:
encoded = TextBlock.encode_text(line)
new_lut.put_u32(base_addr + data_stream.size())
data_stream.put_bytes(encoded)
else:
new_lut.put_u32(0x0)
# And EOF marker
new_lut.put_u32(0xffffffff)
# Change the duration so it doesn't take so long to scroll
duration = OutputStream()
duration.put_u16(60 * 60)
return rom.apply_patches({
0x016848:
duration.get_buffer(),
0x1D871C:
new_lut.get_buffer(),
Rom.pointer_to_offset(base_addr):
data_stream.get_buffer()
})