def unpack(self, fname):
outData = RulesData()
with file(fname, 'rb') as rfile:
header = rfile.read(2)
assert header == '\x00\x00'
# Chunk 1
format = '<H'
numEntries = unpack(rfile, format)
format = '<2B'
chunk1PointArray = []
for i in xrange(numEntries / 2):
y, x = unpack(rfile, format)
chunk1PointArray.append(PointData(x, y))
outData.chunk1PointArray = chunk1PointArray
# Chunk 2 - character data
format = '<H'
numEntries = unpack(rfile, format)
assert numEntries <= 40
characters = []
for i in xrange(numEntries):
cData = CharacterData()
format = '<4H2b8B'
(posX, posY, posAltitude, frameArray, _rulesBuffer2_5, _rulesBuffer2_6, _rulesBuffer2_7,
spriteSize, direction, _rulesBuffer2_10, _rulesBuffer2_11, _rulesBuffer2_12,
_rulesBuffer2_13_posX, _rulesBuffer2_14_posY) = unpack(rfile, format)
cData.posX = posX if posX == 0xFFFF else ((posX << 3) + 4)
cData.posY = posY if posY == 0xFFFF else ((posY << 3) + 4)
cData.posAltitude = posAltitude & 0xFF
cData.frameArray = frameArray
cData._rulesBuffer2_5 = _rulesBuffer2_5
cData._rulesBuffer2_6 = _rulesBuffer2_6
cData._rulesBuffer2_7 = _rulesBuffer2_7
cData.spriteSize = spriteSize
cData.direction = direction
cData._rulesBuffer2_10 = _rulesBuffer2_10
cData._rulesBuffer2_11 = _rulesBuffer2_11
cData._rulesBuffer2_12 = _rulesBuffer2_12
cData._rulesBuffer2_13_posX = _rulesBuffer2_13_posX
cData._rulesBuffer2_14_posY = _rulesBuffer2_14_posY
format = '32B'
cData.variables = unpack(rfile, format)
cData._rulesBuffer2_16 = unpack(rfile, format)
characters.append(cData)
outData.characters = characters
# Chunk 3 & 4 - packed strings and associated indexes
format = '<2H' # this might actually be signed, going by the ScummVM Robin code.
numEntries, size = unpack(rfile, format)
stringIndexes = unpack(rfile, '<' + str(numEntries) + 'H') # not used, because we cheat below
stringData = rfile.read(size)
# Assume all strings are terminated by \x00, and all strings are used/listed in the index table.
strings = stringData.split('\x00')
del strings[-1]
def unpackString(inChar):
global packedStringLookup
val = ord(inChar)
if val < 0x80:
return inChar
return packedStringLookup[0xFF - val]
for i, packedString in enumerate(strings):
strings[i] = ''.join(map(unpackString, packedString))
outData.strings = strings
# Chunk 5 - scripts
format = '<H'
numEntries = unpack(rfile, format)
scripts = rfile.read(numEntries * 2) # each entry is a uint16
outData.scripts = ScriptData('scripts', scripts)
# Chunk 6 - menu scripts
format = '<H'
numEntries = unpack(rfile, format)
menuScripts = rfile.read(numEntries * 2) # each entry is a uint16
outData.menuScripts = ScriptData('menuScripts', menuScripts)
# Chunk 7 & 8 - game scripts and indexes
format = '<H'
numEntries = unpack(rfile, format)
gameScriptIndexes = unpack(rfile, '<' + str(numEntries) + 'H')
size = unpack(rfile, format)
# Here's an unnecessarily clever way to calculate the sizes of each script block.
script_sizes = map(lambda x, y: (y if y is not None else size) - x, gameScriptIndexes, gameScriptIndexes[1:])
gameScripts = []
for i, script_size in enumerate(script_sizes):
script_data = ScriptData('gameScript_{}'.format(i + 1), rfile.read(script_size))
gameScripts.append(script_data)
outData.gameScripts = gameScripts
# Chunk 9
format = '60B'
outData.rulesChunk9 = unpack(rfile, format)
# Chunk 10 & 11
numEntries = unpack(rfile, 'B')
assert numEntries <= 20
chunk10Sizes = []
if numEntries:
totalSize = 0
for i in xrange(numEntries):
val = unpack(rfile, 'B')
chunk10Sizes.append(val)
totalSize += val
if totalSize:
rulesChunk11 = []
for size in chunk10Sizes:
format = '{}B'.format(size)
data = unpack(rfile, format)
rulesChunk11.append(data)
outData.rulesChunk11 = rulesChunk11
# Chunk 12 - rectangles
format = '<H'
numEntries = unpack(rfile, format)
rectangles = []
format = '8B'
for i in xrange(numEntries):
rectData = RectData(
*(unpack(rfile, format))
)
rectangles.append(rectData)
outData.rectangles = rectangles
# Chunk 13 - interface hotspots
format = '20B' # I think the first entry is actually numEntries, since it's 19
outData.interfaceTwoStepAction = unpack(rfile, format) # might be a byte array
format = '<20h'
outData.interfaceHotspotsX = unpack(rfile, format)
outData.interfaceHotspotsY = unpack(rfile, format)
format = '20B'
outData.keyboardMapping = unpack(rfile, format)
return outData
def decode_objects(dct):
try:
type_val = dct['__type__']
except KeyError:
return dct
if type_val == 'RulesData':
rules = RulesData()
rules.chunk1PointArray = dct['chunk1PointArray']
rules.characters = dct['characters']
rules.strings = dct['strings']
rules.scripts = dct['scripts']
rules.menuScripts = dct['menuScripts']
#rules.gameScriptIndexes = dct['gameScriptIndexes']
rules.gameScripts = dct['gameScripts']
rules.rulesChunk9 = dct['rulesChunk9']
#rules.chunk10Indexes = dct['chunk10Indexes']
rules.rulesChunk11 = dct['rulesChunk11']
rules.rectangles = dct['rectangles']
rules.interfaceTwoStepAction = dct['hotspots']['interfaceTwoStepAction']
rules.interfaceHotspotsX = dct['hotspots']['interfaceHotspotsX']
rules.interfaceHotspotsY = dct['hotspots']['interfaceHotspotsY']
rules.keyboardMapping = dct['hotspots']['keyboardMapping']
return rules
elif type_val == 'PointData':
point = PointData()
point.x = dct['x']
point.y = dct['y']
return point
elif type_val == 'CharacterData':
character = CharacterData()
character.posX = dct['posX']
character.posY = dct['posY']
character.posAltitude = dct['posAltitude']
character.frameArray = dct['frameArray']
character._rulesBuffer2_5 = dct['_rulesBuffer2_5']
character._rulesBuffer2_6 = dct['_rulesBuffer2_6']
character._rulesBuffer2_7 = dct['_rulesBuffer2_7']
character.spriteSize = dct['spriteSize']
character.direction = dct['direction']
character._rulesBuffer2_10 = dct['_rulesBuffer2_10']
character._rulesBuffer2_11 = dct['_rulesBuffer2_11']
character._rulesBuffer2_12 = dct['_rulesBuffer2_12']
character._rulesBuffer2_13_posX = dct['_rulesBuffer2_13_posX']
character._rulesBuffer2_14_posY = dct['_rulesBuffer2_14_posY']
character.variables = dct['variables']
character._rulesBuffer2_16 = dct['_rulesBuffer2_16']
return character
elif type_val == 'RectData':
rect = RectData()
rect.maxX = dct['maxX']
rect.minX = dct['minX']
rect.maxY = dct['maxY']
rect.minY = dct['minY']
rect.topLeftPosY = dct['topLeftPosY']
rect.topLeftPosX = dct['topLeftPosX']
rect.bottomRightPosY = dct['bottomRightPosY']
rect.bottomRightPosX = dct['bottomRightPosX']
return rect
elif type_val == 'RawData':
id = dct['id']
base_name = dct['path']
path_name = os.path.split(json_file_name)[0]
raw_fname = os.path.join(path_name, base_name)
raw_data = RawData(id, None) # Data will be populated later
external_files.append(
(raw_data, raw_fname)
)
return raw_data
elif type_val == 'ScriptData':
id = dct['id']
base_name = dct['path']
path_name = os.path.split(json_file_name)[0]
script_fname = os.path.join(path_name, 'scripts', base_name)
script_data = ScriptData(id, None) # Data will be populated later
external_files.append(
(script_data, script_fname)
)
return script_data
