A very basic 'tool' to read sprite data from NES ROMs (well, at least Super Mario Bros. 3) and either dump them all out or write specific patterns. This is mostly a learning experiment and therefore is not complete/useful, but if there is one person out there who finds it useful then it was all worth it.
An example of usage can be found in example_reader.py. The general idea is to
import nes_sprite_reader into your code and then instantiate an
NESSpriteReader with the path to the ROM and the color palette definitions:
rom = nes_sprite_reader.NESSpriteReader(
'./super_mario_3.nes',
smb3_palettes.PALETTES,
)From there, you can use rom.DrawSprite(...) to draw a specific sprite,
rom.WriteAndNumberAllSprites to dump a BMP that contains all sprites (with the
beginning of each row numbered, for reference), or rom.DrawSpriteBlock, which
will draw a block of sprites (see roms/smb3/smb3_sprites.py for an example).
That will let you combine arbitrary sprites, such as:
