def unpack_chunk_section(self, overworld=True):
"""
Unpacks a chunk section. Returns a sequence of length 4096 (16x16x16).
"""
non_air, value_width = self.unpack('HB')
palette = self.unpack_chunk_section_palette(value_width)
array = self.unpack_chunk_section_array(value_width)
return BlockArray.from_bytes(bytes=array,
palette=palette,
registry=self.registry,
non_air=non_air,
value_width=value_width), None, None
def test_wikivg_example():
# Example from https://wiki.vg/Chunk_Format#Example
data = bitstring.BitArray(length=13 * 4096)
data[
0:
64] = '0b0000000000100000100001100011000101001000010000011000100001000001'
data[
64:
128] = '0b0000000100000001100010100111001001100000111101101000110010000111'
data = data.bytes
blocks = BlockArray.from_bytes(data, 5, OpaqueRegistry(13), [])
assert blocks[:24] == [
1, 2, 2, 3, 4, 4, 5, 6, 6, 4, 8, 0, 7, 4, 3, 13, 15, 16, 9, 14, 10, 12,
0, 2
]
def test_wikivg_example():
# Example from https://wiki.vg/Chunk_Format#Example
data = bitstring.BitArray(length=13*4096)
data[0:64] = '0b0000000100000000000110001000000011000000000001100000000000100000'
data[64:128] = '0b0000001000000000110100000000011010000000000001001100000000100000'
data = data.bytes
blocks = BlockArray.from_bytes(data, [], BitShiftRegistry(13), 10)
assert blocks[0] == (2, 0) # grass
assert blocks[1] == (3, 0) # dirt
assert blocks[2] == (3, 0) # dirt
assert blocks[3] == (3, 1) # coarse dirt
assert blocks[4] == (1, 0) # stone
assert blocks[5] == (1, 0) # stone
assert blocks[6] == (1, 3) # diorite
assert blocks[7] == (13, 0) # gravel
assert blocks[8] == (13, 0) # gravel
assert blocks[9] == (1, 0) # stone
def unpack_chunk_section(self, overworld=True):
"""
Unpacks a chunk section. Returns a 3-tuple of
``(blocks, block_lights, sky_lights)``, where *sky_lights* is ``None``
when *overworld* is ``False``. The returned values are sequences of
length 4096 (16x16x16).
"""
value_width = self.unpack('B')
palette = self.unpack_chunk_section_palette(value_width)
array = self.unpack_chunk_section_array(value_width)
blocks = BlockArray.from_bytes(bytes=array,
palette=palette,
registry=self.registry,
non_air=None,
value_width=value_width)
block_lights = PackedArray.from_light_bytes(self.read(2048))
if overworld:
sky_lights = PackedArray.from_light_bytes(self.read(2048))
else:
sky_lights = None
return blocks, block_lights, sky_lights