Reenable support for old 1.12-era chunks
This commit is contained in:
gmcnew
@@ -119,17 +119,6 @@ class World(object):
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"World at %s is not compatible with Overviewer")
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% self.worlddir)
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# Check for versions of minecraft after the 17w47a changes
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if 'Version' in data:
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version = int(data['Version']["Id"])
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if version < 1519:
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raise UnsupportedVersion(
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"Sorry, This version of Minecraft-Overviewer only works "
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"with versions of Minecraft 1.13 and newer\n"
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"This is due to a change in the map chunk format and changes "
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"to texture names")
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# This isn't much data, around 15 keys and values for vanilla worlds.
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self.leveldat = data
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@@ -675,6 +664,75 @@ class RegionSet(object):
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result = numpy.asarray(result, numpy.uint16)
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return result
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def _get_blockdata_v113(self, section, unrecognized_block_types):
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# Translate each entry in the palette to a 1.2-era (block, data) int pair.
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num_palette_entries = len(section['Palette'])
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palette_translated = [] # (block, data) pairs, num_palette_entries in length
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palette_block_counts = [] # ints, num_palette_entries in length
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unrecognized_palette_entries = []
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for i in range(num_palette_entries):
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key = section['Palette'][i]
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palette_block_counts.append(0)
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try:
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palette_translated.append(self._get_block(key))
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except KeyError as e:
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# Unknown block type? Track it, treat it as air, and move on.
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unrecognized_palette_entries.append(i)
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palette_translated.append(self._blockmap['minecraft:air'])
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# Turn the BlockStates array into a 16x16x16 numpy matrix of shorts.
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blocks = numpy.zeros((4096,), dtype=numpy.uint16)
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data = numpy.zeros((4096,), dtype=numpy.uint8)
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block_states = self._packed_longarray_to_shorts(section['BlockStates'], 4096)
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for i in range(4096):
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palette_index = block_states[i]
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(blocks[i], data[i]) = palette_translated[palette_index]
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palette_block_counts[palette_index] += 1
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# Turn the Data array into a 16x16x16 matrix, same as SkyLight
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blocks = blocks.reshape((16, 16, 16))
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data = data.reshape((16, 16, 16))
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for i in unrecognized_palette_entries:
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if palette_block_counts[i] > 0:
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palette_entry = section['Palette'][i]
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k = palette_entry['Name']
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if 'Properties' in palette_entry:
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k += " %s" % str(palette_entry['Properties'])
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unrecognized_block_types[k] = unrecognized_block_types.get(k, 0) + palette_block_counts[i]
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return (blocks, data)
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def _get_blockdata_v112(self, section):
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# Turn the Data array into a 16x16x16 matrix, same as SkyLight
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data = numpy.frombuffer(section['Data'], dtype=numpy.uint8)
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data = data.reshape((16,16,8))
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data_expanded = numpy.empty((16,16,16), dtype=numpy.uint8)
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data_expanded[:,:,::2] = data & 0x0F
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data_expanded[:,:,1::2] = (data & 0xF0) >> 4
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# Turn the Blocks array into a 16x16x16 numpy matrix of shorts,
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# adding in the additional block array if included.
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blocks = numpy.frombuffer(section['Blocks'], dtype=numpy.uint8)
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# Cast up to uint16, blocks can have up to 12 bits of data
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blocks = blocks.astype(numpy.uint16)
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blocks = blocks.reshape((16,16,16))
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if "Add" in section:
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# This section has additional bits to tack on to the blocks
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# array. Add is a packed array with 4 bits per slot, so
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# it needs expanding
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additional = numpy.frombuffer(section['Add'], dtype=numpy.uint8)
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additional = additional.astype(numpy.uint16).reshape((16,16,8))
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additional_expanded = numpy.empty((16,16,16), dtype=numpy.uint16)
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additional_expanded[:,:,::2] = (additional & 0x0F) << 8
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additional_expanded[:,:,1::2] = (additional & 0xF0) << 4
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blocks += additional_expanded
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del additional
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del additional_expanded
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del section['Add'] # Save some memory
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return (blocks, data_expanded)
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#@log_other_exceptions
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def get_chunk(self, x, z):
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"""Returns a dictionary object representing the "Level" NBT Compound
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@@ -759,47 +817,21 @@ class RegionSet(object):
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# Empty is self-explanatory, and liquid_carved and carved seem to correspond
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# to SkyLight not being calculated, which results in mostly-black chunks,
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# so we'll just pretend they aren't there.
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if chunk_data['Status'] in ("empty", "carved", "liquid_carved", "decorated"):
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if chunk_data.get("Status", "") in ("empty", "carved", "liquid_carved", "decorated"):
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raise ChunkDoesntExist("Chunk %s,%s doesn't exist" % (x,z))
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# Turn the Biomes array into a 16x16 numpy array
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biomes = numpy.asarray(chunk_data['Biomes'])
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try:
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biomes = numpy.frombuffer(chunk_data['Biomes'], dtype=numpy.uint8)
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biomes = biomes.reshape((16,16))
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except KeyError:
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# worlds converted by Jeb's program may be missing the Biomes key
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biomes = numpy.zeros((16, 16), dtype=numpy.uint8)
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chunk_data['Biomes'] = biomes
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unrecognized_block_types = {}
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for section in chunk_data['Sections']:
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# Translate each entry in the palette to a 1.2-era (block, data) int pair.
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num_palette_entries = len(section['Palette'])
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palette_translated = [] # (block, data) pairs, num_palette_entries in length
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palette_block_counts = [] # ints, num_palette_entries in length
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unrecognized_palette_entries = []
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for i in range(num_palette_entries):
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key = section['Palette'][i]
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palette_block_counts.append(0)
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try:
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palette_translated.append(self._get_block(key))
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except KeyError as e:
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# Unknown block type? Track it, treat it as air, and move on.
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unrecognized_palette_entries.append(i)
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palette_translated.append(self._blockmap['minecraft:air'])
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# Turn the BlockStates array into a 16x16x16 numpy matrix of shorts.
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blocks = numpy.zeros((4096,), dtype=numpy.uint16)
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data = numpy.zeros((4096,), dtype=numpy.uint8)
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block_states = self._packed_longarray_to_shorts(section['BlockStates'], 4096)
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for i in range(4096):
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palette_index = block_states[i]
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(blocks[i], data[i]) = palette_translated[palette_index]
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palette_block_counts[palette_index] += 1
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# Turn the Data array into a 16x16x16 matrix, same as SkyLight
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section['Blocks'] = blocks.reshape((16, 16, 16))
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section['Data'] = data.reshape((16, 16, 16))
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del blocks
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del data
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# Turn the skylight array into a 16x16x16 matrix. The array comes
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# packed 2 elements per byte, so we need to expand it.
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try:
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@@ -819,6 +851,13 @@ class RegionSet(object):
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blocklight_expanded[:,:,1::2] = (blocklight & 0xF0) >> 4
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del blocklight
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section['BlockLight'] = blocklight_expanded
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if 'Palette' in section:
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(blocks, data) = self._get_blockdata_v113(section, unrecognized_block_types)
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else:
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(blocks, data) = self._get_blockdata_v112(section)
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(section['Blocks'], section['Data']) = (blocks, data)
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except ValueError:
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# iv'e seen at least 1 case where numpy raises a value error during the reshapes. i'm not
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# sure what's going on here, but let's treat this as a corrupt chunk error
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@@ -827,16 +866,8 @@ class RegionSet(object):
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logging.debug("Full traceback:", exc_info=1)
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raise nbt.CorruptChunkError()
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for i in unrecognized_palette_entries:
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if palette_block_counts[i] > 0:
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palette_entry = section['Palette'][i]
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k = palette_entry['Name']
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if 'Properties' in palette_entry:
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k += " %s" % str(palette_entry['Properties'])
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unrecognized_block_types[k] = unrecognized_block_types.get(k, 0) + palette_block_counts[i]
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for k in unrecognized_block_types:
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logging.warning("Found %d blocks of unknown type %s" % (unrecognized_block_types[k], k))
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logging.debug("Found %d blocks of unknown type %s" % (unrecognized_block_types[k], k))
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return chunk_data
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