pyCraft/minecraft/networking/packets/clientbound/play/explosion_packet.py

from minecraft.networking.types import Vector, Float, Byte, Integer
from minecraft.networking.packets import Packet


class ExplosionPacket(Packet):
    @staticmethod
    def get_id(context):
        return 0x1E if context.protocol_version >= 389 else \
               0x1D if context.protocol_version >= 345 else \
               0x1C if context.protocol_version >= 332 else \
               0x1D if context.protocol_version >= 318 else \
               0x1C if context.protocol_version >= 80 else \
               0x1B if context.protocol_version >= 67 else \
               0x27

    packet_name = 'explosion'

    class Record(Vector):
        __slots__ = ()

    @property
    def position(self):
        return Vector(self.x, self.y, self.x)

    @position.setter
    def position(self, new_position):
        self.x, self.y, self.z = new_position

    @property
    def player_motion(self):
        return Vector(self.player_motion_x, self.player_motion_y,
                      self.player_motion_z)

    @player_motion.setter
    def player_motion(self, new_player_motion):
        self.player_motion_x, self.player_motion_y, self.player_motion_z \
            = new_player_motion

    def read(self, file_object):
        self.x = Float.read(file_object)
        self.y = Float.read(file_object)
        self.z = Float.read(file_object)
        self.radius = Float.read(file_object)
        records_count = Integer.read(file_object)
        self.records = []
        for i in range(records_count):
            rec_x = Byte.read(file_object)
            rec_y = Byte.read(file_object)
            rec_z = Byte.read(file_object)
            record = ExplosionPacket.Record(rec_x, rec_y, rec_z)
            self.records.append(record)
        self.player_motion_x = Float.read(file_object)
        self.player_motion_y = Float.read(file_object)
        self.player_motion_z = Float.read(file_object)

    def write_fields(self, packet_buffer):
        Float.send(self.x, packet_buffer)
        Float.send(self.y, packet_buffer)
        Float.send(self.z, packet_buffer)
        Float.send(self.radius, packet_buffer)
        Integer.send(len(self.records), packet_buffer)
        for record in self.records:
            Byte.send(record.x, packet_buffer)
            Byte.send(record.y, packet_buffer)
            Byte.send(record.z, packet_buffer)
        Float.send(self.player_motion_x, packet_buffer)
        Float.send(self.player_motion_y, packet_buffer)
        Float.send(self.player_motion_z, packet_buffer)