from minecraft.networking.packets import Packet from minecraft.networking.types.utility import descriptor from minecraft.networking.types import ( VarInt, UUID, Byte, Double, Integer, UnsignedByte, Short, Enum, Vector, PositionAndLook, attribute_alias, multi_attribute_alias, ) class SpawnObjectPacket(Packet): @staticmethod def get_id(context): return 0x00 if context.protocol_version >= 67 else \ 0x0E packet_name = 'spawn object' fields = ('entity_id', 'object_uuid', 'type_id', 'x', 'y', 'z', 'pitch', 'yaw') @descriptor def EntityType(desc, self, cls): # pylint: disable=no-self-argument if self is None: # EntityType is being accessed as a class attribute. raise AttributeError( 'This interface is deprecated:\n\n' 'As of pyCraft\'s support for Minecraft 1.14, the nested ' 'class "SpawnObjectPacket.EntityType" cannot be accessed as a ' 'class attribute, because it depends on the protocol version. ' 'There are two ways to access the correct version of the ' 'class:\n\n' '1. Access the "EntityType" attribute of a ' '"SpawnObjectPacket" instance with its "context" property ' 'set.\n\n' '2. Call "SpawnObjectPacket.field_enum(\'type_id\', ' 'context)".') else: # EntityType is being accessed as an instance attribute. return self.field_enum('type_id', self.context) @classmethod def field_enum(cls, field, context): if field != 'type_id' or context is None: return pv = context.protocol_version name = 'EntityType_%d' % pv if hasattr(cls, name): return getattr(cls, name) class EntityType(Enum): ACTIVATED_TNT = 50 if pv < 458 else 55 # PrimedTnt AREA_EFFECT_CLOUD = 3 if pv < 458 else 0 ARMORSTAND = 78 if pv < 458 else 1 ARROW = 60 if pv < 458 else 2 BOAT = 1 if pv < 458 else 5 DRAGON_FIREBALL = 93 if pv < 458 else 13 EGG = 62 if pv < 458 else 74 # ThrownEgg ENDERCRYSTAL = 51 if pv < 458 else 16 ENDERPEARL = 65 if pv < 458 else 75 # ThrownEnderpearl EVOCATION_FANGS = 79 if pv < 458 else 20 EXP_BOTTLE = 75 if pv < 458 else 76 # ThrownExpBottle EYE_OF_ENDER = 72 if pv < 458 else 23 # EyeOfEnderSignal FALLING_OBJECT = 70 if pv < 458 else 24 # FallingSand FIREBALL = 63 if pv < 458 else 34 # Fireball (ghast) FIRECHARGE = 64 if pv < 458 else 65 # SmallFireball (blaze) FIREWORK_ROCKET = 76 if pv < 458 else 25 # FireworksRocketEntity FISHING_HOOK = 90 if pv < 458 else 93 # Fishing bobber ITEM_FRAMES = 71 if pv < 458 else 33 # ItemFrame ITEM_STACK = 2 if pv < 458 else 32 # Item LEASH_KNOT = 77 if pv < 458 else 35 LLAMA_SPIT = 68 if pv < 458 else 37 MINECART = 10 if pv < 458 else 39 # MinecartRideable POTION = 73 if pv < 458 else 77 # ThrownPotion SHULKER_BULLET = 67 if pv < 458 else 60 SNOWBALL = 61 if pv < 458 else 67 SPECTRAL_ARROW = 91 if pv < 458 else 68 WITHER_SKULL = 66 if pv < 458 else 85 if pv >= 393: TRIDENT = 94 if pv >= 458: MINECART_CHEST = 40 MINECART_COMMAND_BLOCK = 41 MINECART_FURNACE = 42 MINECART_HOPPER = 43 MINECART_SPAWNER = 44 MINECART_TNT = 45 setattr(cls, name, EntityType) return EntityType def read(self, file_object): self.entity_id = VarInt.read(file_object) if self.context.protocol_version >= 49: self.object_uuid = UUID.read(file_object) if self.context.protocol_version >= 458: self.type_id = VarInt.read(file_object) else: self.type_id = Byte.read(file_object) xyz_type = Double if self.context.protocol_version >= 100 else Integer for attr in 'x', 'y', 'z': setattr(self, attr, xyz_type.read(file_object)) for attr in 'pitch', 'yaw': setattr(self, attr, UnsignedByte.read(file_object)) self.data = Integer.read(file_object) if self.context.protocol_version >= 49 or self.data > 0: for attr in 'velocity_x', 'velocity_y', 'velocity_z': setattr(self, attr, Short.read(file_object)) def write_fields(self, packet_buffer): VarInt.send(self.entity_id, packet_buffer) if self.context.protocol_version >= 49: UUID.send(self.object_uuid, packet_buffer) if self.context.protocol_version >= 458: VarInt.send(self.type_id, packet_buffer) else: Byte.send(self.type_id, packet_buffer) # pylint: disable=no-member xyz_type = Double if self.context.protocol_version >= 100 else Integer for coord in self.x, self.y, self.z: xyz_type.send(coord, packet_buffer) for coord in self.pitch, self.yaw: UnsignedByte.send(coord, packet_buffer) Integer.send(self.data, packet_buffer) if self.context.protocol_version >= 49 or self.data > 0: for coord in self.velocity_x, self.velocity_y, self.velocity_z: Short.send(coord, packet_buffer) # Access the entity type as a string, according to the EntityType enum. @property def type(self): if self.context is None: raise ValueError('This packet must have a non-None "context" ' 'in order to read the "type" property.') # pylint: disable=no-member return self.EntityType.name_from_value(self.type_id) @type.setter def type(self, type_name): if self.context is None: raise ValueError('This packet must have a non-None "context" ' 'in order to set the "type" property.') self.type_id = getattr(self.EntityType, type_name) @type.deleter def type(self): del self.type_id position = multi_attribute_alias(Vector, 'x', 'y', 'z') # NOTE: modifying the object retrieved from this property will not change # the packet; it can only be changed by attribute or property assignment. position_and_look = multi_attribute_alias( PositionAndLook, x='x', y='y', z='z', yaw='yaw', pitch='pitch') velocity = multi_attribute_alias( Vector, 'velocity_x', 'velocity_y', 'velocity_z') # This alias is retained for backward compatibility. objectUUID = attribute_alias('object_uuid')