🎓 Packet API

The following objects and APIs provide the basic BDS packet interface for scripts.

(Please refer to Nukkit, PokcetMine, BDS Reverse to know the packet structure) If the client crashes, it is a packet structure error, not a bug.

The documentation does not list the packet ID and its structure, please check it yourself.

目录

• 🔉 Packet Object API
• 🔌 Binary stream object API

🔉 Packet Object API

In LLSE, 「Packet Object」 is used to get information about packets.

Get a packet object

Get from API

Call some return packet object function to get to the packet object given by BDS
See Binary Stream Objects for details

Packet Objects - Functions

Every packet object contains some member functions (member methods) that can be executed. For a particular entity object pkt, some operations can be performed on this packet by these functions

Get packet name

pkt.getName()

• Return value：packet name
• Return value type： String

Get packet ID

pkt.getId()

• Return value：packet id
• Return value type： Integer

🔌 Binary Stream Object API

Create a binary stream object

[JavaScript] new BinaryStream()

[Lua] BinaryStream()

• Return value: Binary stream object
• Return value type： BinaryStream

Binary Stream Object - Functions

Every binary stream object contains some member functions (member methods) that can be executed. For a particular entity object bs, some operations can be performed on this binary stream by these functions

Resetting binary streams

bs.reset()

• Return value: success or not
• Return value type： Boolean

Write to binary stream

bs.writexxxx(value)

• Parameters：

• value : NULL
  Refer to the table below

• Return value：success or not

• Return value type： Boolean

Available functions	Parameter Type
writeBool	Boolean
writeByte	Integer
writeDouble	Number
writeFloat	Float
writeSignedBigEndianInt	Number
writeSignedInt	Number
writeSignedInt64	Number
writeSignedShort	Integer
writeString	String
writeUnsignedChar	Integer
writeUnsignedInt	Number
writeUnsignedInt64	Number
writeUnsignedShort	Integer
writeUnsignedVarInt	Number
writeUnsignedVarInt64	Number
writeVarInt	Number
writeVarInt64	Number
writeVec3	FloatPos
writeCompoundTag	NbtCompound

Building packet from binary stream

bs.createPacket(pktid)

• Parameters：

• pktid : Integer
  Packet ID

• Return value：Packet object

• Return value type： Packet

Dome Code

Send TextPacket packets to a player

mc.listen("onChat",function(pl,msg){
    const bs = new BinaryStream()
    var text = "LLSE Packet Test"
    bs.reserve(text.length + 8)
    bs.writeUnsignedChar(0)
    bs.writeBool(true)
    bs.writeString(text)
    bs.writeString("")
    bs.writeString("")
    var pkt = bs.createPacket(9)
    pl.sendPacket(pkt)
})