364 lines
9.6 KiB
Python
364 lines
9.6 KiB
Python
from math import floor
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from minecraft.networking.packets import Packet, PacketBuffer
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from minecraft.networking.types import (
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VarInt, Integer, UnsignedByte, Position, Vector, MutableRecord,
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attribute_alias, multi_attribute_alias, Long, Boolean, VarLong,
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Short, UnsignedLong, Byte, BlockFace, String, UUID, Angle, Double,
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Float,
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)
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from protocol.types import Nbt, Slot, Entry
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import blocks
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class ChunkDataPacket(Packet):
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id = 0x20
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packet_name = 'chunk data'
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fields = 'x', 'bit_mask_y', 'z', 'full_chunk'
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def read(self, file_object):
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self.x = Integer.read(file_object)
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self.z = Integer.read(file_object)
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self.full_chunk = Boolean.read(file_object)
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self.bit_mask_y = VarInt.read(file_object)
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self.heightmaps = Nbt.read(file_object)
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self.biomes = []
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if self.full_chunk:
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biomes_length = VarInt.read(file_object)
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for i in range(biomes_length):
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self.biomes.append(VarInt.read(file_object))
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size = VarInt.read(file_object)
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self.data = file_object.read(size)
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size_entities = VarInt.read(file_object)
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self.entities = []
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for i in range(size_entities):
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self.entities.append(Nbt.read(file_object))
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self.decode_chunk_data()
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def write_fields(self, packet_buffer):
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Integer.send(self.x, packet_buffer)
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Integer.send(self.z, packet_buffer)
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Boolean.send(self.full_chunk, packet_buffer)
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VarInt.send(self.bit_mask_y, packet_buffer)
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Nbt.send(self.heightmaps, packet_buffer)
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if self.full_chunk:
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for i in range(1024):
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Integer.send(self.biomes[i], packet_buffer)
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VarInt.send(len(self.data), packet_buffer)
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packet_buffer.send(self.data)
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VarInt.send(len(self.entities), packet_buffer)
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for e in self.entities:
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Nbt.send(e, packet_buffer)
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def decode_chunk_data(self):
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packet_data = PacketBuffer()
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packet_data.send(self.data)
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packet_data.reset_cursor()
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self.chunks = {}
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for i in range(16): #0-15
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self.chunks[i] = Chunk(self.x, i, self.z)
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if self.bit_mask_y & (1 << i):
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self.chunks[i].read(packet_data)
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for e in self.entities:
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y = e['y']
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self.chunks[floor(y/16)].entities.append(e)
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class Chunk:
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position = multi_attribute_alias(Vector, 'x', 'y', 'z')
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def __init__(self, x, y, z, empty=True):
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self.x = x
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self.y = y
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self.z = z
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self.empty = empty
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self.entities = []
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self.sub_index = {}
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def __repr__(self):
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return 'Chunk(%r, %r, %r)' % (self.x, self.y, self.z)
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def read(self, file_object):
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self.empty = False
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self.block_count = Short.read(file_object)
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self.bpb = UnsignedByte.read(file_object)
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if self.bpb <= 4:
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self.bpb = 4
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if self.bpb <= 8: # Indirect palette
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self.palette = []
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size = VarInt.read(file_object)
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for i in range(size):
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self.palette.append(VarInt.read(file_object))
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else: # Direct palette
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self.palette = None
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size = VarInt.read(file_object)
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longs = []
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for i in range(size):
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longs.append(UnsignedLong.read(file_object))
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self.blocks = []
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mask = (1 << self.bpb)-1
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bits_used = int(64 / self.bpb) * self.bpb
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for i in range(4096):
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l1 = int((i*self.bpb)/bits_used)
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offset = (i*self.bpb)%bits_used
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n = longs[l1] >> offset
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n &= mask
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if self.palette:
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n = self.palette[n]
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self.blocks.append(n)
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if n in blocks.INDEXED_IDS:
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if n not in self.sub_index:
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self.sub_index[n] = []
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self.sub_index[n].append(i)
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def write_fields(self, packet_buffer):
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pass # TODO
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def get_block_at(self, x, y, z):
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if self.empty:
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return 0
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return self.blocks[x+y*256+z*16]
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def set_block_at(self, x, y, z, block):
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if self.empty:
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self.init_empty()
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self.blocks[x+y*256+z*16] = block
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def init_empty(self):
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self.blocks = []
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for i in range(4096):
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self.blocks.append(0)
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self.empty = False
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@property
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def origin(self):
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return self.position*16
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class AcknowledgePlayerDiggingPacket(Packet):
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id = 0x07
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packet_name = 'acknowledge player digging'
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definition = [
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{'location': Position},
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{'block': VarInt},
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{'status': VarInt},
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{'successful': Boolean},
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]
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class BlockBreakAnimationPacket(Packet):
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id = 0x08
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packet_name = 'block break animation'
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definition = [
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{'entity_id': VarInt},
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{'location': Position},
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{'destroy_stage': Byte},
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]
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class SetSlotPacket(Packet):
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id = 0x15
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packet_name = 'set slot'
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definition = [
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{'window_id': Byte},
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{'slot': Short},
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{'slot_data': Slot},
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]
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class PlayerDiggingPacket(Packet):
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# used when player mines / breaks blocks
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# https://wiki.vg/Protocol#Player_Digging
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id = 0x1B
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packet_name = 'player digging'
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definition = [
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{'status': VarInt},
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{'location': Position},
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{'face': VarInt},
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]
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STARTED = 0
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CANCELLED = 1
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FINISHED = 2
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# PlayerBlockPlacementPacket.Face is an alias for BlockFace.
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Face = BlockFace
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class PickItemPacket(Packet):
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# used when player picks item (middle click)
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# https://wiki.vg/Protocol#Pick_Item
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id = 0x18
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packet_name = 'pick item'
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definition = [
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{'slot_to_use': VarInt},
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]
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class HeldItemChangePacket(Packet):
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# Sent when the player changes the slot selection
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# https://wiki.vg/Protocol#Held_Item_Change_.28serverbound.29
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id = 0x25
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packet_name = 'held item change'
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definition = [
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{'slot': Short},
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]
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class OpenWindowPacket(Packet):
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# Sent to the client when it should open an inventory, such as a chest, workbench, or furnace
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# https://wiki.vg/Protocol#Open_Window
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id = 0x2D
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packet_name = 'open window'
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definition = [
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{'window_id': VarInt},
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{'window_type': VarInt},
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{'window_title': String},
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]
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class CloseWindowPacket(Packet):
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# Sent by the client when closing a window
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# https://wiki.vg/Protocol#Close_Window_.28serverbound.29
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id = 0x0A
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packet_name = 'close window'
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definition = [
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{'window_id': UnsignedByte},
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]
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class ClickWindowPacket(Packet):
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# Sent by the player when it clicks on a slot in a window
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# https://wiki.vg/Protocol#Click_Window
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id = 0x09
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packet_name = 'click window'
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definition = [
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{'window_id': UnsignedByte},
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{'slot': Short},
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{'button': Byte},
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{'action_number': Short},
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{'mode': VarInt},
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{'clicked_item': Slot},
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]
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class ClientWindowConfirmationPacket(Packet):
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# Sent by the server indicating whether a request from the client was accepted
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# https://wiki.vg/Protocol#Window_Confirmation_.28clientbound.29
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id = 0x11
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packet_name = 'client window confirmation'
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definition = [
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{'window_id': Byte},
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{'action_number': Short},
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{'accepted': Boolean},
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]
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class ServerWindowConfirmationPacket(Packet):
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# Sent by the client to confirm an unaccepted click
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# https://wiki.vg/Protocol#Window_Confirmation_.28serverbound.29
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id = 0x07
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packet_name = 'client window confirmation'
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definition = [
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{'window_id': Byte},
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{'action_number': Short},
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{'accepted': Boolean},
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]
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class EntityMetadataPacket(Packet):
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# Updates one or more metadata properties for an existing entity
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# https://wiki.vg/Protocol#Entity_Metadata
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id = 0x44
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packet_name = 'entity metadata'
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fields = 'entity_id', 'metadata'
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class Entry:
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__slots__ = 'index', 'type', 'value'
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def read(self, file_object):
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self.entity_id = VarInt.read(file_object)
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self.metadata = []
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for _ in range(99):
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entry = Entry.read(file_object, self.context)
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if not entry: break
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self.metadata.append(entry)
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class SpawnLivingEntityPacket(Packet):
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# Sent by the server when a living entity is spawned
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# https://wiki.vg/Protocol#Spawn_Entity
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id = 0x02
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packet_name = 'spawn living entity'
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definition = [
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{'entity_id': VarInt},
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{'entity_uuid': UUID},
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{'type': VarInt},
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{'x': Double},
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{'y': Double},
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{'z': Double},
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{'yaw': Angle},
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{'pitch': Angle},
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{'head_pitch': Angle},
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{'velocity_x': Short},
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{'velocity_y': Short},
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{'velocity_z': Short},
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]
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class EntityPositionRotationPacket(Packet):
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# Sent by the server when an entity rotates and moves
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# https://wiki.vg/Protocol#Entity_Position_and_Rotation
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id = 0x28
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packet_name = 'entity position and rotation'
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definition = [
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{'entity_id': VarInt},
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{'delta_x': Short},
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{'delta_y': Short},
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{'delta_z': Short},
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{'yaw': Angle},
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{'pitch': Angle},
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{'on_ground': Boolean},
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]
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class DestroyEntitiesPacket(Packet):
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# Sent by the server when a list of entities is to be destroyed on the client
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# https://wiki.vg/Protocol#Destroy_Entities
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id = 0x36
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packet_name = 'destroy entities'
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fields = 'count', 'entity_ids'
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def read(self, file_object):
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self.count = VarInt.read(file_object)
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self.entity_ids = []
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for _ in range(self.count):
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eid = VarInt.read(file_object)
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self.entity_ids.append(eid)
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