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219 lines
5.8 KiB
219 lines
5.8 KiB
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, |
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) |
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from protocol.types import Nbt, Slot |
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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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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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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 TimeUpdatePacket(Packet): |
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id = 0x4E |
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packet_name = 'time update' |
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definition = [ |
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{'world_age': Long}, |
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{'time_of_day': Long}, |
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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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