ref: 0e50b4c79833bbe07058a08fa91e59f4307e83a3
dir: /extras/gfx.py/
# -*- coding: utf-8 -*-
import os
import sys
import png
from math import sqrt, floor, ceil
from crystal import load_rom
from pokemon_constants import pokemon_constants
from trainers import trainer_group_names
if __name__ != "__main__":
rom = load_rom()
def mkdir_p(path):
try:
os.makedirs(path)
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST:
pass
else: raise
def hex_dump(input, debug = True):
"""display hex dump in rows of 16 bytes"""
dump = ''
output = ''
stream = ''
address = 0x00
margin = 2 + len(hex(len(input))[2:])
# dump
for byte in input:
cool = hex(byte)[2:].zfill(2)
dump += cool + ' '
if debug: stream += cool
# convenient for testing quick edits in bgb
if debug: output += stream + '\n'
# get dump info
bytes_per_line = 16
chars_per_byte = 3 # '__ '
chars_per_line = bytes_per_line * chars_per_byte
num_lines = int(ceil(float(len(dump)) / float(chars_per_line)))
# top
# margin
for char in range(margin):
output += ' '
#
for byte in range(bytes_per_line):
output += hex(byte)[2:].zfill(2) + ' '
output = output[:-1] # last space
# print hex
for line in range(num_lines):
# address
output += '\n' + hex(address)[2:].zfill(margin - 2) + ': '
# contents
start = line * chars_per_line
end = chars_per_line + start - 1 # ignore last space
output += dump[start:end]
address += 0x10
return output
def get_tiles(image):
"""split a 2bpp image into 8x8 tiles"""
tiles = []
tile = []
bytes_per_tile = 16
cur_byte = 0
for byte in image:
# build tile
tile.append(byte)
cur_byte += 1
# done building?
if cur_byte >= bytes_per_tile:
# push completed tile
tiles.append(tile)
tile = []
cur_byte = 0
return tiles
def connect(tiles):
"""combine 8x8 tiles into a 2bpp image"""
out = []
for tile in tiles:
for byte in tile:
out.append(byte)
return out
def transpose(tiles):
"""transpose a tile arrangement along line y=x"""
# horizontal <-> vertical
# 00 01 02 03 04 05 00 06 0c 12 18 1e
# 06 07 08 09 0a 0b 01 07 0d 13 19 1f
# 0c 0d 0e 0f 10 11 <-> 02 08 0e 14 1a 20
# 12 13 14 15 16 17 <-> 03 09 0f 15 1b 21
# 18 19 1a 1b 1c 1d 04 0a 10 16 1c 22
# 1e 1f 20 21 22 23 05 0b 11 17 1d 23
# etc
flipped = []
t = 0 # which tile we're on
w = int(sqrt(len(tiles))) # assume square image
for tile in tiles:
flipped.append(tiles[t])
t += w
# end of row?
if t >= w*w:
# wrap around
t -= w*w
# next row
t += 1
return flipped
def to_file(filename, data):
file = open(filename, 'wb')
for byte in data:
file.write('%c' % byte)
file.close()
# basic rundown of crystal's compression scheme:
# a control command consists of
# the command (bits 5-7)
# and the count (bits 0-4)
# followed by additional params
lz_lit = 0
# print literal for [count] bytes
lz_iter = 1
# print one byte [count] times
lz_alt = 2
# print alternating bytes (2 params) for [count] bytes
lz_zeros = 3
# print 00 for [count] bytes
# repeater control commands have a signed parameter used to determine the start point
# wraparound is simulated
# positive values are added to the start address of the decompressed data
# and negative values are subtracted from the current position
lz_repeat = 4
# print [count] bytes from decompressed data
lz_flip = 5
# print [count] bytes from decompressed data in bit order 01234567
lz_reverse = 6
# print [count] bytes from decompressed data backwards
lz_hi = 7
# -used when the count exceeds 5 bits. uses a 10-bit count instead
# -bits 2-4 now contain the control code, bits 0-1 are bits 8-9 of the count
# -the following byte contains bits 0-7 of the count
lz_end = 0xff
# if 0xff is encountered the decompression ends
# since frontpics have animation tiles lumped onto them,
# sizes must be grabbed from base stats to know when to stop reading them
max_length = 1 << 10 # can't go higher than 10 bits
lowmax = 1 << 5 # standard 5-bit param
class Compressed:
"""compress 2bpp data"""
def __init__(self, image = None, mode = 'horiz', size = None):
assert image, 'need something to compress!'
image = list(image)
self.image = image
self.pic = []
self.animtiles = []
# only transpose pic (animtiles were never transposed in decompression)
if size != None:
for byte in range((size*size)*16):
self.pic += image[byte]
for byte in range(((size*size)*16),len(image)):
self.animtiles += image[byte]
else:
self.pic = image
if mode == 'vert':
self.tiles = get_tiles(self.pic)
self.tiles = transpose(self.tiles)
self.pic = connect(self.tiles)
self.image = self.pic + self.animtiles
self.end = len(self.image)
self.byte = None
self.address = 0
self.stream = []
self.zeros = []
self.alts = []
self.iters = []
self.repeats = []
self.flips = []
self.reverses = []
self.literals = []
self.output = []
self.compress()
def compress(self):
"""incomplete, but outputs working compressed data"""
self.address = 0
# todo
#self.scanRepeats()
while ( self.address < self.end ):
#if (self.repeats):
# self.doRepeats()
#if (self.flips):
# self.doFlips()
#if (self.reverses):
# self.doReverses
if (self.checkWhitespace()):
self.doLiterals()
self.doWhitespace()
elif (self.checkIter()):
self.doLiterals()
self.doIter()
elif (self.checkAlts()):
self.doLiterals()
self.doAlts()
else: # doesn't fit any pattern -> literal
self.addLiteral()
self.next()
self.doStream()
# add any literals we've been sitting on
self.doLiterals()
# done
self.output.append(lz_end)
def getCurByte(self):
if self.address < self.end:
self.byte = ord(self.image[self.address])
else: self.byte = None
def next(self):
self.address += 1
self.getCurByte()
def addLiteral(self):
self.getCurByte()
self.literals.append(self.byte)
if len(self.literals) > max_length:
raise Exception, "literals exceeded max length and the compressor didn't catch it"
elif len(self.literals) == max_length:
self.doLiterals()
def doLiterals(self):
if len(self.literals) > lowmax:
self.output.append( (lz_hi << 5) | (lz_lit << 2) | ((len(self.literals) - 1) >> 8) )
self.output.append( (len(self.literals) - 1) & 0xff )
elif len(self.literals) > 0:
self.output.append( (lz_lit << 5) | (len(self.literals) - 1) )
for byte in self.literals:
self.output.append(byte)
self.literals = []
def doStream(self):
for byte in self.stream:
self.output.append(byte)
self.stream = []
def scanRepeats(self):
"""works, but doesn't do flipped/reversed streams yet
this takes up most of the compress time and only saves a few bytes
it might be more feasible to exclude it entirely"""
self.repeats = []
self.flips = []
self.reverses = []
# make a 5-letter word list of the sequence
letters = 5 # how many bytes it costs to use a repeat over a literal
# any shorter and it's not worth the trouble
num_words = len(self.image) - letters
words = []
for i in range(self.address,num_words):
word = []
for j in range(letters):
word.append( ord(self.image[i+j]) )
words.append((word, i))
zeros = []
for zero in range(letters):
zeros.append( 0 )
# check for matches
def get_matches():
# TODO:
# append to 3 different match lists instead of yielding to one
#
#flipped = []
#for byte in enumerate(this[0]):
# flipped.append( sum(1<<(7-i) for i in range(8) if (this[0][byte])>>i&1) )
#reversed = this[0][::-1]
#
for whereabout, this in enumerate(words):
for that in range(whereabout+1,len(words)):
if words[that][0] == this[0]:
if words[that][1] - this[1] >= letters:
# remove zeros
if this[0] != zeros:
yield [this[0], this[1], words[that][1]]
matches = list(get_matches())
# remove more zeros
buffer = []
for match in matches:
# count consecutive zeros in a word
num_zeros = 0
highest = 0
for j in range(letters):
if match[0][j] == 0:
num_zeros += 1
else:
if highest < num_zeros: highest = num_zeros
num_zeros = 0
if highest < 4:
# any more than 3 zeros in a row isn't worth it
# (and likely to already be accounted for)
buffer.append(match)
matches = buffer
# combine overlapping matches
buffer = []
for this, match in enumerate(matches):
if this < len(matches) - 1: # special case for the last match
if matches[this+1][1] <= (match[1] + len(match[0])): # check overlap
if match[1] + len(match[0]) < match[2]:
# next match now contains this match's bytes too
# this only appends the last byte (assumes overlaps are +1
match[0].append(matches[this+1][0][-1])
matches[this+1] = match
elif match[1] + len(match[0]) == match[2]:
# we've run into the thing we matched
buffer.append(match)
# else we've gone past it and we can ignore it
else: # no more overlaps
buffer.append(match)
else: # last match, so there's nothing to check
buffer.append(match)
matches = buffer
# remove alternating sequences
buffer = []
for match in matches:
for i in range(6 if letters > 6 else letters):
if match[0][i] != match[0][i&1]:
buffer.append(match)
break
matches = buffer
self.repeats = matches
def doRepeats(self):
"""doesn't output the right values yet"""
unusedrepeats = []
for repeat in self.repeats:
if self.address >= repeat[2]:
# how far in we are
length = (len(repeat[0]) - (self.address - repeat[2]))
# decide which side we're copying from
if (self.address - repeat[1]) <= 0x80:
self.doLiterals()
self.stream.append( (lz_repeat << 5) | length - 1 )
# wrong?
self.stream.append( (((self.address - repeat[1])^0xff)+1)&0xff )
else:
self.doLiterals()
self.stream.append( (lz_repeat << 5) | length - 1 )
# wrong?
self.stream.append(repeat[1]>>8)
self.stream.append(repeat[1]&0xff)
#print hex(self.address) + ': ' + hex(len(self.output)) + ' ' + hex(length)
self.address += length
else: unusedrepeats.append(repeat)
self.repeats = unusedrepeats
def checkWhitespace(self):
self.zeros = []
self.getCurByte()
original_address = self.address
if ( self.byte == 0 ):
while ( self.byte == 0 ) & ( len(self.zeros) <= max_length ):
self.zeros.append(self.byte)
self.next()
if len(self.zeros) > 1:
return True
self.address = original_address
return False
def doWhitespace(self):
if (len(self.zeros) + 1) >= lowmax:
self.stream.append( (lz_hi << 5) | (lz_zeros << 2) | ((len(self.zeros) - 1) >> 8) )
self.stream.append( (len(self.zeros) - 1) & 0xff )
elif len(self.zeros) > 1:
self.stream.append( lz_zeros << 5 | (len(self.zeros) - 1) )
else:
raise Exception, "checkWhitespace() should prevent this from happening"
def checkAlts(self):
self.alts = []
self.getCurByte()
original_address = self.address
num_alts = 0
# make sure we don't check for alts at the end of the file
if self.address+3 >= self.end: return False
self.alts.append(self.byte)
self.alts.append(ord(self.image[self.address+1]))
# are we onto smething?
if ( ord(self.image[self.address+2]) == self.alts[0] ):
cur_alt = 0
while (ord(self.image[(self.address)+1]) == self.alts[num_alts&1]) & (num_alts <= max_length):
num_alts += 1
self.next()
# include the last alternated byte
num_alts += 1
self.address = original_address
if num_alts > lowmax:
return True
elif num_alts > 2:
return True
return False
def doAlts(self):
original_address = self.address
self.getCurByte()
#self.alts = []
#num_alts = 0
#self.alts.append(self.byte)
#self.alts.append(ord(self.image[self.address+1]))
#i = 0
#while (ord(self.image[self.address+1]) == self.alts[i^1]) & (num_alts <= max_length):
# num_alts += 1
# i ^=1
# self.next()
## include the last alternated byte
#num_alts += 1
num_alts = len(self.iters) + 1
if num_alts > lowmax:
self.stream.append( (lz_hi << 5) | (lz_alt << 2) | ((num_alts - 1) >> 8) )
self.stream.append( num_alts & 0xff )
self.stream.append( self.alts[0] )
self.stream.append( self.alts[1] )
elif num_alts > 2:
self.stream.append( (lz_alt << 5) | (num_alts - 1) )
self.stream.append( self.alts[0] )
self.stream.append( self.alts[1] )
else:
raise Exception, "checkAlts() should prevent this from happening"
self.address = original_address
self.address += num_alts
def checkIter(self):
self.iters = []
self.getCurByte()
iter = self.byte
original_address = self.address
while (self.byte == iter) & (len(self.iters) < max_length):
self.iters.append(self.byte)
self.next()
self.address = original_address
if len(self.iters) > 3:
# 3 or fewer isn't worth the trouble and actually longer
# if part of a larger literal set
return True
return False
def doIter(self):
self.getCurByte()
iter = self.byte
original_address = self.address
self.iters = []
while (self.byte == iter) & (len(self.iters) < max_length):
self.iters.append(self.byte)
self.next()
if (len(self.iters) - 1) >= lowmax:
self.stream.append( (lz_hi << 5) | (lz_iter << 2) | ((len(self.iters)-1) >> 8) )
self.stream.append( (len(self.iters) - 1) & 0xff )
self.stream.append( iter )
elif len(self.iters) > 3:
# 3 or fewer isn't worth the trouble and actually longer
# if part of a larger literal set
self.stream.append( (lz_iter << 5) | (len(self.iters) - 1) )
self.stream.append( iter )
else:
self.address = original_address
raise Exception, "checkIter() should prevent this from happening"
class Decompressed:
"""parse compressed 2bpp data
parameters:
[compressed 2bpp data]
[tile arrangement] default: 'vert'
[size of pic] default: None
[start] (optional)
splits output into pic [size] and animation tiles if applicable
data can be fed in from rom if [start] is specified"""
def __init__(self, lz = None, mode = None, size = None, start = 0):
# todo: play nice with Compressed
assert lz, 'need something to compress!'
self.lz = lz
self.byte = None
self.address = 0
self.start = start
self.output = []
self.decompress()
debug = False
# print tuple containing start and end address
if debug: print '(' + hex(self.start) + ', ' + hex(self.start + self.address+1) + '),'
# only transpose pic
self.pic = []
self.animtiles = []
if size != None:
self.tiles = get_tiles(self.output)
self.pic = connect(self.tiles[:(size*size)])
self.animtiles = connect(self.tiles[(size*size):])
else: self.pic = self.output
if mode == 'vert':
self.tiles = get_tiles(self.pic)
self.tiles = transpose(self.tiles)
self.pic = connect(self.tiles)
self.output = self.pic + self.animtiles
def decompress(self):
"""replica of crystal's decompression"""
self.output = []
while True:
self.getCurByte()
if (self.byte == lz_end):
break
self.cmd = (self.byte & 0b11100000) >> 5
if self.cmd == lz_hi: # 10-bit param
self.cmd = (self.byte & 0b00011100) >> 2
self.length = (self.byte & 0b00000011) << 8
self.next()
self.length += self.byte + 1
else: # 5-bit param
self.length = (self.byte & 0b00011111) + 1
# literals
if self.cmd == lz_lit:
self.doLiteral()
elif self.cmd == lz_iter:
self.doIter()
elif self.cmd == lz_alt:
self.doAlt()
elif self.cmd == lz_zeros:
self.doZeros()
else: # repeaters
self.next()
if self.byte > 0x7f: # negative
self.displacement = self.byte & 0x7f
self.displacement = len(self.output) - self.displacement - 1
else: # positive
self.displacement = self.byte * 0x100
self.next()
self.displacement += self.byte
if self.cmd == lz_flip:
self.doFlip()
elif self.cmd == lz_reverse:
self.doReverse()
else: # lz_repeat
self.doRepeat()
self.address += 1
#self.next() # somewhat of a hack
def getCurByte(self):
self.byte = ord(self.lz[self.start+self.address])
def next(self):
self.address += 1
self.getCurByte()
def doLiteral(self):
# copy 2bpp data directly
for byte in range(self.length):
self.next()
self.output.append(self.byte)
def doIter(self):
# write one byte repeatedly
self.next()
for byte in range(self.length):
self.output.append(self.byte)
def doAlt(self):
# write alternating bytes
self.alts = []
self.next()
self.alts.append(self.byte)
self.next()
self.alts.append(self.byte)
for byte in range(self.length):
self.output.append(self.alts[byte&1])
def doZeros(self):
# write zeros
for byte in range(self.length):
self.output.append(0x00)
def doFlip(self):
# repeat flipped bytes from 2bpp output
# eg 11100100 -> 00100111
# quat 3 2 1 0 -> 0 2 1 3
for byte in range(self.length):
flipped = sum(1<<(7-i) for i in range(8) if self.output[self.displacement+byte]>>i&1)
self.output.append(flipped)
def doReverse(self):
# repeat reversed bytes from 2bpp output
for byte in range(self.length):
self.output.append(self.output[self.displacement-byte])
def doRepeat(self):
# repeat bytes from 2bpp output
for byte in range(self.length):
self.output.append(self.output[self.displacement+byte])
sizes = [
5, 6, 7, 5, 6, 7, 5, 6, 7, 5, 5, 7, 5, 5, 7, 5,
6, 7, 5, 6, 5, 7, 5, 7, 5, 7, 5, 6, 5, 6, 7, 5,
6, 7, 5, 6, 6, 7, 5, 6, 5, 7, 5, 6, 7, 5, 7, 5,
7, 5, 7, 5, 7, 5, 7, 5, 7, 5, 7, 5, 6, 7, 5, 6,
7, 5, 7, 7, 5, 6, 7, 5, 6, 5, 6, 6, 6, 7, 5, 7,
5, 6, 6, 5, 7, 6, 7, 5, 7, 5, 7, 7, 6, 6, 7, 6,
7, 5, 7, 5, 5, 7, 7, 5, 6, 7, 6, 7, 6, 7, 7, 7,
6, 6, 7, 5, 6, 6, 7, 6, 6, 6, 7, 6, 6, 6, 7, 7,
6, 7, 7, 5, 5, 6, 6, 6, 6, 5, 6, 5, 6, 7, 7, 7,
7, 7, 5, 6, 7, 7, 5, 5, 6, 7, 5, 6, 7, 5, 6, 7,
6, 6, 5, 7, 6, 6, 5, 7, 7, 6, 6, 5, 5, 5, 5, 7,
5, 6, 5, 6, 7, 7, 5, 7, 6, 7, 5, 6, 7, 5, 5, 6,
6, 5, 6, 6, 6, 6, 7, 6, 5, 6, 7, 5, 7, 6, 6, 7,
6, 6, 5, 7, 5, 6, 6, 5, 7, 5, 6, 5, 6, 6, 5, 6,
6, 7, 7, 6, 7, 7, 5, 7, 6, 7, 7, 5, 7, 5, 6, 6,
6, 7, 7, 7, 7, 5, 6, 7, 7, 7, 5,
]
def make_sizes():
"""front pics have specified sizes"""
top = 251
base_stats = 0x51424
# print monster sizes
address = base_stats + 0x11
output = ''
for id in range(top):
size = (ord(rom[address])) & 0x0f
if id % 16 == 0: output += '\n\t'
output += str(size) + ', '
address += 0x20
print output
fxs = 0xcfcf6
num_fx = 40
def decompress_fx_by_id(id):
address = fxs + id*4 # len_fxptr
# get size
num_tiles = ord(rom[address]) # # tiles
# get pointer
bank = ord(rom[address+1])
address = (ord(rom[address+3]) << 8) + ord(rom[address+2])
address = (bank * 0x4000) + (address & 0x3fff)
# decompress
fx = Decompressed(rom, 'horiz', num_tiles, address)
return fx
def decompress_fx():
for id in range(num_fx):
fx = decompress_fx_by_id(id)
filename = '../gfx/fx/' + str(id).zfill(3) + '.2bpp' # ../gfx/fx/039.2bpp
to_file(filename, fx.pic)
num_pics = 2
front = 0
back = 1
monsters = 0x120000
num_monsters = 251
unowns = 0x124000
num_unowns = 26
unown_dex = 201
def decompress_monster_by_id(id = 0, type = front):
# no unowns here
if id + 1 == unown_dex: return None
# get size
if type == front:
size = sizes[id]
else: size = None
# get pointer
address = monsters + (id*2 + type)*3 # bank, address
bank = ord(rom[address]) + 0x36 # crystal
address = (ord(rom[address+2]) << 8) + ord(rom[address+1])
address = (bank * 0x4000) + (address & 0x3fff)
# decompress
monster = Decompressed(rom, 'vert', size, address)
return monster
def decompress_monsters(type = front):
for id in range(num_monsters):
# decompress
monster = decompress_monster_by_id(id, type)
if monster != None: # no unowns here
if not type: # front
filename = 'front.2bpp'
folder = '../gfx/pics/' + str(id+1).zfill(3) + '/'
to_file(folder+filename, monster.pic)
filename = 'tiles.2bpp'
folder = '../gfx/pics/' + str(id+1).zfill(3) + '/'
to_file(folder+filename, monster.animtiles)
else: # back
filename = 'back.2bpp'
folder = '../gfx/pics/' + str(id+1).zfill(3) + '/'
to_file(folder+filename, monster.pic)
def decompress_unown_by_id(letter, type = front):
# get size
if type == front:
size = sizes[unown_dex-1]
else: size = None
# get pointer
address = unowns + (letter*2 + type)*3 # bank, address
bank = ord(rom[address]) + 0x36 # crystal
address = (ord(rom[address+2]) << 8) + ord(rom[address+1])
address = (bank * 0x4000) + (address & 0x3fff)
# decompress
unown = Decompressed(rom, 'vert', size, address)
return unown
def decompress_unowns(type = front):
for letter in range(num_unowns):
# decompress
unown = decompress_unown_by_id(letter, type)
if not type: # front
filename = 'front.2bpp'
folder = '../gfx/pics/' + str(unown_dex).zfill(3) + chr(ord('a') + letter) + '/'
to_file(folder+filename, unown.pic)
filename = 'tiles.2bpp'
folder = '../gfx/anim/'
to_file(folder+filename, unown.animtiles)
else: # back
filename = 'back.2bpp'
folder = '../gfx/pics/' + str(unown_dex).zfill(3) + chr(ord('a') + letter) + '/'
to_file(folder+filename, unown.pic)
trainers = 0x128000
num_trainers = 67
def decompress_trainer_by_id(id):
# get pointer
address = trainers + id*3 # bank, address
bank = ord(rom[address]) + 0x36 # crystal
address = (ord(rom[address+2]) << 8) + ord(rom[address+1])
address = (bank * 0x4000) + (address & 0x3fff)
# decompress
trainer = Decompressed(rom, 'vert', None, address)
return trainer
def decompress_trainers():
for id in range(num_trainers):
# decompress
trainer = decompress_trainer_by_id(id)
filename = '../gfx/trainers/' + str(id).zfill(3) + '.2bpp' # ../gfx/trainers/066.2bpp
to_file(filename, trainer.pic)
# in order of use (sans repeats)
intro_gfx = [
('logo', 0x109407),
('001', 0xE641D), # tilemap
('unowns', 0xE5F5D),
('pulse', 0xE634D),
('002', 0xE63DD), # tilemap
('003', 0xE5ECD), # tilemap
('background', 0xE5C7D),
('004', 0xE5E6D), # tilemap
('005', 0xE647D), # tilemap
('006', 0xE642D), # tilemap
('pichu_wooper', 0xE592D),
('suicune_run', 0xE555D),
('007', 0xE655D), # tilemap
('008', 0xE649D), # tilemap
('009', 0xE76AD), # tilemap
('suicune_jump', 0xE6DED),
('unown_back', 0xE785D),
('010', 0xE764D), # tilemap
('011', 0xE6D0D), # tilemap
('suicune_close', 0xE681D),
('012', 0xE6C3D), # tilemap
('013', 0xE778D), # tilemap
('suicune_back', 0xE72AD),
('014', 0xE76BD), # tilemap
('015', 0xE676D), # tilemap
('crystal_unowns', 0xE662D),
('017', 0xE672D), # tilemap
]
def decompress_intro():
for name, address in intro_gfx:
filename = '../gfx/intro/' + name + '.2bpp'
gfx = Decompressed( rom, 'horiz', None, address )
to_file(filename, gfx.output)
title_gfx = [
('suicune', 0x10EF46),
('logo', 0x10F326),
('crystal', 0x10FCEE),
]
def decompress_title():
for name, address in title_gfx:
filename = '../gfx/title/' + name + '.2bpp'
gfx = Decompressed( rom, 'horiz', None, address )
to_file(filename, gfx.output)
def decompress_tilesets():
tileset_headers = 0x4d596
len_tileset = 15
num_tilesets = 0x25
for tileset in range(num_tilesets):
ptr = tileset*len_tileset + tileset_headers
address = (ord(rom[ptr])*0x4000) + (((ord(rom[ptr+1]))+ord(rom[ptr+2])*0x100)&0x3fff)
tiles = Decompressed( rom, 'horiz', None, address )
filename = '../gfx/tilesets/'+str(tileset).zfill(2)+'.2bpp'
to_file( filename, tiles.output )
#print '(' + hex(address) + ', '+ hex(address+tiles.address+1) + '),'
misc = [
('player', 0x2BA1A, 'vert'),
('dude', 0x2BBAA, 'vert'),
('town_map', 0xF8BA0, 'horiz'),
('pokegear', 0x1DE2E4, 'horiz'),
('pokegear_sprites', 0x914DD, 'horiz'),
]
def decompress_misc():
for name, address, mode in misc:
filename = '../gfx/misc/' + name + '.2bpp'
gfx = Decompressed( rom, mode, None, address )
to_file(filename, gfx.output)
def decompress_all(debug = False):
"""decompress all known compressed data in baserom"""
if debug: print 'fronts'
decompress_monsters(front)
if debug: print 'backs'
decompress_monsters(back)
if debug: print 'unown fronts'
decompress_unowns(front)
if debug: print 'unown backs'
decompress_unowns(back)
if debug: print 'trainers'
decompress_trainers()
if debug: print 'fx'
decompress_fx()
if debug: print 'intro'
decompress_intro()
if debug: print 'title'
decompress_title()
if debug: print 'tilesets'
decompress_tilesets()
if debug: print 'misc'
decompress_misc()
return
def decompress_from_address(address, mode='horiz', filename = 'de.2bpp', size = None):
"""write decompressed data from an address to a 2bpp file"""
image = Decompressed(rom, mode, size, address)
to_file(filename, image.pic)
def decompress_file(filein, fileout, mode = 'horiz', size = None):
f = open(filein, 'rb')
image = f.read()
f.close()
de = Decompressed(image, mode, size)
to_file(fileout, de.pic)
def compress_file(filein, fileout, mode = 'horiz'):
f = open(filein, 'rb')
image = f.read()
f.close()
lz = Compressed(image, mode)
to_file(fileout, lz.output)
def compress_monster_frontpic(id, fileout):
mode = 'vert'
fpic = '../gfx/pics/' + str(id).zfill(3) + '/front.2bpp'
fanim = '../gfx/pics/' + str(id).zfill(3) + '/tiles.2bpp'
pic = open(fpic, 'rb').read()
anim = open(fanim, 'rb').read()
image = pic + anim
lz = Compressed(image, mode, sizes[id-1])
out = '../gfx/pics/' + str(id).zfill(3) + '/front.lz'
to_file(out, lz.output)
def get_uncompressed_gfx(start, num_tiles, filename):
"""grab tiles directly from rom and write to file"""
bytes_per_tile = 0x10
length = num_tiles*bytes_per_tile
end = start + length
rom = load_rom()
image = []
for address in range(start,end):
image.append(ord(rom[address]))
to_file(filename, image)
def hex_to_rgb(word):
red = word & 0b11111
word >>= 5
green = word & 0b11111
word >>= 5
blue = word & 0b11111
return (red, green, blue)
def grab_palettes(address, length = 0x80):
output = ''
for word in range(length/2):
color = ord(rom[address+1])*0x100 + ord(rom[address])
address += 2
color = hex_to_rgb(color)
red = str(color[0]).zfill(2)
green = str(color[1]).zfill(2)
blue = str(color[2]).zfill(2)
output += '\tRGB '+red+', '+green+', '+blue
output += '\n'
return output
def dump_monster_pals():
rom = load_rom()
pals = 0xa8d6
pal_length = 0x4
for mon in range(251):
name = pokemon_constants[mon+1].title().replace('_','')
num = str(mon+1).zfill(3)
dir = 'gfx/pics/'+num+'/'
address = pals + mon*pal_length*2
pal_data = []
for byte in range(pal_length):
pal_data.append(ord(rom[address]))
address += 1
filename = 'normal.pal'
to_file('../'+dir+filename, pal_data)
spacing = ' ' * (15 - len(name))
#print name+'Palette:'+spacing+' INCBIN "'+dir+filename+'"'
pal_data = []
for byte in range(pal_length):
pal_data.append(ord(rom[address]))
address += 1
filename = 'shiny.pal'
to_file('../'+dir+filename, pal_data)
spacing = ' ' * (10 - len(name))
#print name+'ShinyPalette:'+spacing+' INCBIN "'+dir+filename+'"'
def dump_trainer_pals():
rom = load_rom()
pals = 0xb0d2
pal_length = 0x4
for trainer in range(67):
name = trainer_group_names[trainer+1]['constant'].title().replace('_','')
num = str(trainer).zfill(3)
dir = 'gfx/trainers/'
address = pals + trainer*pal_length
pal_data = []
for byte in range(pal_length):
pal_data.append(ord(rom[address]))
address += 1
filename = num+'.pal'
to_file('../'+dir+filename, pal_data)
spacing = ' ' * (12 - len(name))
print name+'Palette:'+spacing+' INCBIN"'+dir+filename+'"'
def flatten(planar):
"""
Flattens planar 2bpp image data into a quaternary pixel map.
"""
strips = []
for pair in range(len(planar)/2):
bottom = ord(planar[(pair*2) ])
top = ord(planar[(pair*2)+1])
strip = []
for i in range(7,-1,-1):
color = ((bottom >> i) & 1) + (((top >> i-1) if i > 0 else (top << 1-i)) & 2)
strip.append(color)
strips += strip
return strips
def to_lines(image, width):
"""
Converts a tiled quaternary pixel map to lines of quaternary pixels.
"""
tile = 8 * 8
# so we know how many strips of 8px we're putting into a line
num_columns = width / 8
# number of lines
height = len(image) / width
lines = []
for cur_line in range(height):
tile_row = int(cur_line / 8)
line = []
for column in range(num_columns):
anchor = num_columns*tile_row*tile + column*tile + (cur_line%8)*8
line += image[anchor:anchor+8]
lines.append(line)
return lines
def dmg2rgb(word):
red = word & 0b11111
word >>= 5
green = word & 0b11111
word >>= 5
blue = word & 0b11111
alpha = 255
return ((red<<3)+0b100, (green<<3)+0b100, (blue<<3)+0b100, alpha)
def rgb_to_dmg(color):
word = (color['r'] / 8)
word += (color['g'] / 8) << 5
word += (color['b'] / 8) << 10
return word
def png_pal(filename):
palette = []
with open(filename, 'rb') as pal_data:
words = pal_data.read()
dmg_pals = []
for word in range(len(words)/2):
dmg_pals.append(ord(words[word*2]) + ord(words[word*2+1])*0x100)
white = (255,255,255,255)
black = (000,000,000,255)
for word in dmg_pals: palette += [dmg2rgb(word)]
if white not in dmg_pals and len(palette) < 4: palette = [white] + palette
if black not in dmg_pals and len(palette) < 4: palette += [black]
return palette
def to_png(filein, fileout=None, pal_file=None, height=None, width=None):
"""
Takes a planar 2bpp graphics file and converts it to png.
"""
if fileout == None: fileout = '.'.join(filein.split('.')[:-1]) + '.png'
image = open(filein, 'rb').read()
num_pixels = len(image) * 4
if num_pixels == 0: return 'empty image!'
# unless the pic is square, at least one dimension should be given
if width == None and height == None:
width = int(sqrt(num_pixels))
height = width
elif height == None:
height = num_pixels / width
elif width == None:
width = num_pixels / height
# but try to see if it can be made rectangular
if width * height != num_pixels:
# look for possible combos of width/height that would form a rectangle
matches = []
# this is pretty inefficient, and there is probably a simpler way
for width in range(8,256+1,8): # we only want dimensions that fit in tiles
height = num_pixels / width
if height % 8 == 0:
matches.append((width, height))
# go for the most square image
width, height = sorted(matches, key=lambda (x,y): x+y)[0] # favors height
# if it can't, the only option is a width of 1 tile
if width * height != num_pixels:
width = 8
height = num_pixels / width
# if this still isn't rectangular, then the image isn't made of tiles
# for now we'll just spit out a warning
if width * height != num_pixels:
print 'Warning! ' + fileout + ' is ' + width + 'x' + height + '(' + width*height + ' pixels),\n' +\
'but ' + filein + ' is ' + num_pixels + ' pixels!'
# map it out
lines = to_lines(flatten(image), width)
if pal_file == None:
if os.path.exists(os.path.splitext(fileout)[0]+'.pal'):
pal_file = os.path.splitext(fileout)[0]+'.pal'
if pal_file == None:
palette = None
greyscale = True
bitdepth = 2
inverse = { 0:3, 1:2, 2:1, 3:0 }
map = [[inverse[pixel] for pixel in line] for line in lines]
else: # gbc color
palette = png_pal(pal_file)
greyscale = False
bitdepth = 8
map = [[pixel for pixel in line] for line in lines]
w = png.Writer(width, height, palette=palette, compression = 9, greyscale = greyscale, bitdepth = bitdepth)
with open(fileout, 'wb') as file:
w.write(file, map)
def to_2bpp(filein, fileout=None, palout=None):
"""
Takes a png and converts it to planar 2bpp.
"""
if fileout == None: fileout = '.'.join(filein.split('.')[:-1]) + '.2bpp'
with open(filein, 'rb') as file:
r = png.Reader(file)
info = r.asRGBA8()
width = info[0]
height = info[1]
rgba = list(info[2])
greyscale = info[3]['greyscale']
padding = { 'left': 0,
'right': 0,
'top': 0,
'bottom': 0, }
#if width % 8 != 0:
# padding['left'] = int(ceil((width / 8 + 8 - width) / 2))
# padding['right'] = int(floor((width / 8 + 8 - width) / 2))
#if height % 8 != 0:
# padding['top'] = int(ceil((height / 8 + 8 - height) / 2))
# padding['bottom'] = int(floor((height / 8 + 8 - height) / 2))
# turn the flat values into something more workable
pixel_length = 4 # rgba
image = []
# while we're at it, let's size up the palette
palette = []
for line in rgba:
newline = []
for pixel in range(len(line)/pixel_length):
i = pixel * pixel_length
color = { 'r': line[i ],
'g': line[i+1],
'b': line[i+2],
'a': line[i+3], }
newline += [color]
if color not in palette: palette += [color]
image.append(newline)
# pad out any small palettes
hues = {
'white': { 'r': 0xff, 'g': 0xff, 'b': 0xff, 'a': 0xff },
'black': { 'r': 0x00, 'g': 0x00, 'b': 0x00, 'a': 0xff },
'grey': { 'r': 0x55, 'g': 0x55, 'b': 0x55, 'a': 0xff },
'gray': { 'r': 0xaa, 'g': 0xaa, 'b': 0xaa, 'a': 0xff },
}
while len(palette) < 4:
for hue in hues.values():
if not any(color is hue for color in palette):
palette += [hue]
if len(palette) >= 4: break
assert len(palette) <= 4, 'Palette should be 4 colors, is really ' + str(len(palette))
# sort by luminance
def luminance(color):
# this is actually in reverse, thanks to dmg/cgb palette ordering
rough = { 'r': 4.7,
'g': 1.4,
'b': 13.8, }
return sum(color[key] * -rough[key] for key in rough.keys())
palette = sorted(palette, key=luminance)
# spit out a new .pal file
# disable this if it causes problems with paletteless images
if palout == None:
if os.path.exists(os.path.splitext(fileout)[0]+'.pal'):
palout = os.path.splitext(fileout)[0]+'.pal'
if palout != None:
output = []
for color in palette:
word = rgb_to_dmg(color)
output += [word & 0xff]
output += [word >> 8]
to_file(palout, output)
# create a new map of quaternary color ids
map = []
if padding['top']: map += [0] * (width + padding['left'] + padding['right']) * padding['top']
for line in image:
if padding['left']: map += [0] * padding['left']
for color in line:
map.append(palette.index(color))
if padding['right']: map += [0] * padding['right']
if padding['bottom']: map += [0] * (width + padding['left'] + padding['right']) * padding['bottom']
# split it into strips of 8, and make them planar
num_columns = width / 8
num_rows = height / 8
tile = 8 * 8
image = []
for row in range(num_rows):
for column in range(num_columns):
for strip in range(tile / 8):
anchor = row*num_columns*tile + column*tile/8 + strip*width
line = map[anchor:anchor+8]
bottom = 0
top = 0
for bit, quad in enumerate(line):
bottom += (quad & 1) << (7-bit)
top += ((quad & 2) >> 1) << (7-bit)
image.append(bottom)
image.append(top)
to_file(fileout, image)
def png_to_lz(filein):
name = os.path.splitext(filein)[0]
to_2bpp(filein)
image = open(name+'.2bpp', 'rb').read()
to_file(name+'.lz', Compressed(image).output)
def mass_to_png(debug=False):
# greyscale
for root, dirs, files in os.walk('../gfx/'):
for name in files:
if debug: print os.path.splitext(name), os.path.join(root, name)
if os.path.splitext(name)[1] == '.2bpp':
to_png(os.path.join(root, name))
def mass_to_colored_png(debug=False):
# greyscale, unless a palette is detected
for root, dirs, files in os.walk('../gfx/'):
if 'pics' not in root and 'trainers' not in root:
for name in files:
if debug: print os.path.splitext(name), os.path.join(root, name)
if os.path.splitext(name)[1] == '.2bpp':
to_png(os.path.join(root, name))
os.utime(os.path.join(root, name), None)
# only monster and trainer pics for now
for root, dirs, files in os.walk('../gfx/pics/'):
for name in files:
if debug: print os.path.splitext(name), os.path.join(root, name)
if os.path.splitext(name)[1] == '.2bpp':
if 'normal.pal' in files:
to_png(os.path.join(root, name), None, os.path.join(root, 'normal.pal'))
else:
to_png(os.path.join(root, name))
os.utime(os.path.join(root, name), None)
for root, dirs, files in os.walk('../gfx/trainers/'):
for name in files:
if debug: print os.path.splitext(name), os.path.join(root, name)
if os.path.splitext(name)[1] == '.2bpp':
to_png(os.path.join(root, name))
os.utime(os.path.join(root, name), None)
def mass_decompress(debug=False):
for root, dirs, files in os.walk('../gfx/'):
for name in files:
if 'lz' in name:
if '/pics' in root:
if 'front' in name:
id = root.split('pics/')[1][:3]
if id != 'egg':
with open(os.path.join(root, name), 'rb') as lz: de = Decompressed(lz.read(), 'vert', sizes[int(id)-1])
else:
with open(os.path.join(root, name), 'rb') as lz: de = Decompressed(lz.read(), 'vert', 4)
to_file(os.path.join(root, 'front.2bpp'), de.pic)
to_file(os.path.join(root, 'tiles.2bpp'), de.animtiles)
elif 'back' in name:
with open(os.path.join(root, name), 'rb') as lz: de = Decompressed(lz.read(), 'vert')
to_file(os.path.join(root, 'back.2bpp'), de.output)
elif '/trainers' in root or '/fx' in root:
with open(os.path.join(root, name), 'rb') as lz: de = Decompressed(lz.read(), 'vert')
to_file(os.path.join(root, os.path.splitext(name)[0]+'.2bpp'), de.output)
else:
with open(os.path.join(root, name), 'rb') as lz: de = Decompressed(lz.read())
to_file(os.path.join(root, os.path.splitext(name)[0]+'.2bpp'), de.output)
os.utime(os.path.join(root, name), None)
def append_terminator_to_lzs(directory):
# fix lzs that were extracted with a missing terminator
for root, dirs, files in os.walk(directory):
for file in files:
if '.lz' in file:
data = open(root+file,'rb').read()
if data[-1] != chr(0xff):
data += chr(0xff)
new = open(root+file,'wb')
new.write(data)
new.close()
def lz_to_png_by_file(filename):
"""
Converts a lz file to png. Dumps a 2bpp file too.
"""
assert filename[-3:] == ".lz"
lz_data = open(filename, "rb").read()
bpp = Decompressed(lz_data).output
bpp_filename = filename.replace(".lz", ".2bpp")
to_file(bpp_filename, bpp)
to_png(bpp_filename)
def dump_tileset_pngs():
"""
Converts .lz format tilesets into .png format tilesets. Also, leaves a
bunch of wonderful .2bpp files everywhere for your amusement.
"""
for tileset_id in range(37):
tileset_filename = "../gfx/tilesets/" + str(tileset_id).zfill(2) + ".lz"
lz_to_png_by_file(tileset_filename)
def decompress_frontpic(lz_file):
"""
Convert the pic portion of front.lz to front.2bpp
"""
lz = open(lz_file, 'rb').read()
to_file(Decompressed(lz).pic, os.path.splitext(filein)[0] + '.2bpp')
def decompress_frontpic_anim(lz_file):
"""
Convert the animation tile portion of front.lz to tiles.2bpp
"""
lz = open(lz_file, 'rb').read()
to_file(Decompressed(lz).animtiles, 'tiles.2bpp')
def expand_pic_palettes():
"""
Add white and black to palette files with fewer than 4 colors.
Pokemon Crystal only defines two colors for a pic palette to
save space, filling in black/white at runtime.
Instead of managing palette files of varying length, black
and white are added to pic palettes and excluded from incbins.
"""
for root, dirs, files in os.walk('../gfx/'):
if 'gfx/pics' in root or 'gfx/trainers' in root:
for name in files:
if os.path.splitext(name)[1] == '.pal':
filename = os.path.join(root, name)
palette = bytearray(open(filename, 'rb').read())
w = bytearray([0xff, 0x7f])
b = bytearray([0x00, 0x00])
if len(palette) == 4:
with open(filename, 'wb') as out:
out.write(w + palette + b)
if __name__ == "__main__":
debug = False
argv = [None] * 5
for i, arg in enumerate(sys.argv):
argv[i] = arg
if argv[1] == 'dump-pngs':
mass_to_colored_png()
elif argv[1] == 'mass-decompress':
mass_decompress()
elif argv[1] == 'front-to-2bpp':
decompress_frontpic(argv[2])
elif argv[1] == 'anim-from-front':
decompress_frontpic_anim(argv[2])
elif argv[1] == 'lz-to-2bpp':
name = os.path.splitext(argv[3])[0]
lz = open(name+'.lz', 'rb').read()
if argv[2] == '--vert':
to_file(name+'.2bpp', Decompressed(lz, 'vert').output)
else:
to_file(name+'.2bpp', Decompressed(lz).output)
elif argv[1] == 'lz-to-png':
if argv[2] == '--vert':
name = os.path.splitext(argv[3])[0]
lz = open(name+'.lz', 'rb').read()
to_file(name+'.2bpp', Decompressed(lz, 'vert').output)
pic = open(name+'.2bpp', 'rb').read()
to_file(name+'.png', to_png(pic))
else:
lz_to_png_by_file(argv[2])
elif argv[1] == 'png-to-lz':
# python gfx.py png-to-lz [--front anim(2bpp) | --vert] [png]
if argv[2] == '--front':
# front.2bpp and tiles.2bpp are combined before compression,
# so we have to pass in the anim file and pic size
name = os.path.splitext(argv[4])[0]
to_2bpp(name+'.png', name+'.2bpp')
pic = open(name+'.2bpp', 'rb').read()
anim = open(argv[3], 'rb').read()
size = int(sqrt(len(pic)/16)) # assume square pic
to_file(name+'.lz', Compressed(pic + anim, 'vert', size).output)
elif argv[2] == '--vert':
name = os.path.splitext(argv[3])[0]
to_2bpp(name+'.png', name+'.2bpp')
pic = open(name+'.2bpp', 'rb').read()
to_file(name+'.lz', Compressed(pic, 'vert').output)
else:
png_to_lz(argv[2])
elif argv[1] == 'png-to-2bpp':
to_2bpp(argv[2])
elif argv[1] == '2bpp-to-lz':
if argv[2] == '--vert':
filein = argv[3]
fileout = argv[4]
compress_file(filein, fileout, 'vert')
else:
filein = argv[2]
fileout = argv[3]
compress_file(filein, fileout)
elif argv[1] == '2bpp-to-png':
to_png(argv[2])