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()
})
def pack(self, rom: Rom) -> Rom:
text_block = OutputStream()
text_lut = OutputStream()
next_addr = self.lut[0]
text_block_offset = Rom.pointer_to_offset(next_addr)
for index, data in enumerate(self.strings):
if data is not None:
text_lut.put_u32(next_addr)
text_block.put_bytes(data)
next_addr += len(data)
else:
text_lut.put_u32(self.lut[0])
patches = {
self.lut_offset: text_lut.get_buffer(),
text_block_offset: text_block.get_buffer()
}
return rom.apply_patches(patches)