Python script for building the TIC-ROLL TIC-80 cartridge https://tic80.com/play?cart=1754

ticroll.py

#!/usr/bin/env python3

import wave
from io import BytesIO
from PIL import Image

wave_buffer = BytesIO()
data_len = 0

with wave.open('nevergonna-1920.wav', 'rb') as wav:
    while data_len < 58224:
        frames = wav.readframes(2)
        b0h = frames[0] // 16
        b1h = frames[1] // 16
        wave_buffer.write(bytes([b0h | (b1h << 4)]))
        data_len += 1

wave_data = wave_buffer.getvalue()
tile_data = wave_data[0x0000:0x2000]
sprite_data = wave_data[0x2000:0x4000]
map_data = wave_data[0x4000:0xbf80]
waveform_data = wave_data[0xbf80:0xc080]
sfx_data = wave_data[0xc080:0xd100]
music_pat_data = wave_data[0xd100:0xfe00]

with open('rick.gif', 'rb') as gif:
    cover_data = gif.read()

img = Image.open('rick.gif')
palette_data = bytes(img.getpalette()[:48])

program_data = b'''-- title:  TIC-roll
-- author: Gasman / Hooy-Program
-- desc:   PCM sample playback at 1.96kHz. I'm really sorry.
-- script: lua

addr=0
function TIC()
 poke(0xff9c,0x3c)
 poke(0xff9d,0xf0)
 if addr < 0xbf80 then
  memcpy(0xff9e,addr+0x4000,16)
 else
  memcpy(0xff9e,addr+0x4064,16)
 end
 addr=addr+16
 if addr>58224 then addr=17664 end
end
'''

def write_chunk(f, typ, data):
    tic.write(bytes([typ]))
    tic.write(bytes([len(data) & 0xFF]))
    tic.write(bytes([len(data) >> 8]))
    tic.write(bytes([0]))
    tic.write(data)

with open('ticroll.tic', 'wb') as tic:
    write_chunk(tic, 0x01, tile_data)
    write_chunk(tic, 0x02, sprite_data)
    write_chunk(tic, 0x03, cover_data)
    write_chunk(tic, 0x04, map_data)
    write_chunk(tic, 0x05, program_data)
    write_chunk(tic, 0x09, sfx_data)
    write_chunk(tic, 0x0a, waveform_data)
    write_chunk(tic, 0x0c, palette_data)
    write_chunk(tic, 0x0d, music_pat_data)