Structure of sprite type 0 in TWG

structure_of_sprite_type_0_in_twg.txt

offset    length      description
0         0x42        header string
0x42      2           number of sprites <N>
0x44      60          zero padding bytes
0x80      x           N * (each sprite)

each sprite
offset    length      description
0         4           total length of compressed data <L>
4         2           width. 320 >= width
6         2           height. 200 >= height
8         2           unknown
10        2           unknown
12        L           compressed data

compressed data
offset    length      description
0         2           number of blocks <B>
2         x           B * (each block)

each block
offset    length      description
0         2           number of blank pixels
2         1           m
3         1           n
4         4 * m + n   painted pixels. palette indices.

verifier
https://gist.github.com/heisvoid/bf8ac365d5e474642a82

extractor
https://gist.github.com/heisvoid/c179122c0ecc2d30cc54