mirror of
https://github.com/ammaraskar/pyCraft.git
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110 lines
4.0 KiB
Python
110 lines
4.0 KiB
Python
from minecraft.networking.packets import (
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Packet, PacketBuffer
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)
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from minecraft.networking.types import (
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VarInt, Integer, UnsignedByte, Position
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)
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class BlockChangePacket(Packet):
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@staticmethod
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def get_id(context):
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return 0x0B if context.protocol_version >= 332 else \
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0x0C if context.protocol_version >= 318 else \
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0x0B if context.protocol_version >= 67 else \
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0x24 if context.protocol_version >= 62 else \
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0x23
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packet_name = 'block change'
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def read(self, file_object):
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self.location = Position.read(file_object)
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blockData = VarInt.read(file_object)
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if self.context.protocol_version >= 347:
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# See comments on MultiBlockChangePacket.OpaqueRecord.
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self.blockStateId = blockData
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else:
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self.blockId = (blockData >> 4)
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self.blockMeta = (blockData & 0xF)
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def write(self, socket, compression_threshold=None):
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packet_buffer = PacketBuffer()
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(x, y, z) = self.location
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Position.send(x, y, z, packet_buffer)
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blockData = ((self.blockId << 4) | (self.blockMeta & 0xF))
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VarInt.send(blockData)
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self._write_buffer(socket, packet_buffer, compression_threshold)
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class MultiBlockChangePacket(Packet):
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@staticmethod
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def get_id(context):
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return 0x0F if context.protocol_version >= 343 else \
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0x10 if context.protocol_version >= 332 else \
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0x11 if context.protocol_version >= 318 else \
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0x10 if context.protocol_version >= 67 else \
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0x22
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packet_name = 'multi block change'
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class BaseRecord(object):
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__slots__ = 'x', 'y', 'z'
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def __init__(self, horizontal_position, y_coordinate):
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self.x = (horizontal_position & 0xF0) >> 4
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self.y = y_coordinate
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self.z = (horizontal_position & 0x0F)
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def __str__(self):
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return self.__repr__()
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@classmethod
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def get_subclass(cls, context):
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return MultiBlockChangePacket.OpaqueRecord \
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if context.protocol_version >= 347 else \
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MultiBlockChangePacket.Record
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class Record(BaseRecord):
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__slots__ = 'blockId', 'blockMeta'
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def __init__(self, h_position, y_coordinate, blockData):
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super(MultiBlockChangePacket.Record, self).__init__(
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h_position, y_coordinate)
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self.blockId = (blockData >> 4)
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self.blockMeta = (blockData & 0xF)
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def __repr__(self):
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return ('Record(x=%s, y=%s, z=%s, blockId=%s)'
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% (self.x, self.y, self.z, self.blockId))
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'''The structure of the block data changed in protocol 347 (17w47b,
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between 1.12.2 and 1.13), which this class reflects: instead of a
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separate blockId and blockMeta number, there is a single opaque
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blockStateId whose meaning may change between minor versions.'''
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class OpaqueRecord(BaseRecord):
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__slots__ = 'blockStateId'
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def __init__(self, h_position, y_coordinate, blockData):
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super(MultiBlockChangePacket.OpaqueRecord, self).__init__(
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h_position, y_coordinate)
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self.blockStateId = blockData
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def __repr__(self):
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return ('OpaqueRecord(x=%s, y=%s, z=%s, blockStateId=%s)'
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% (self.x, self.y, self.z, self.blockStateId))
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def read(self, file_object):
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self.chunk_x = Integer.read(file_object)
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self.chunk_z = Integer.read(file_object)
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records_count = VarInt.read(file_object)
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record_type = self.BaseRecord.get_subclass(self.context)
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self.records = []
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for i in range(records_count):
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record = record_type(h_position=UnsignedByte.read(file_object),
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y_coordinate=UnsignedByte.read(file_object),
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blockData=VarInt.read(file_object))
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self.records.append(record)
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def write(self, socket, compression_threshold=None):
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raise NotImplementedError
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