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pub mod common;
pub mod configuration;
pub mod game;
pub mod handshaking;
pub mod login;
pub mod status;
use crate::read::ReadPacketError;
use azalea_buf::{BufReadError, McBufVarReadable, McBufVarWritable, McBufWritable};
use std::io::{Cursor, Write};
// TODO: rename the packet files to just like clientbound_add_entity instead of
// clientbound_add_entity_packet
pub const PROTOCOL_VERSION: i32 = 768;
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum ConnectionProtocol {
Handshake = -1,
Game = 0,
Status = 1,
Login = 2,
Configuration = 3,
}
impl ConnectionProtocol {
#[must_use]
pub fn from_i32(i: i32) -> Option<Self> {
match i {
-1 => Some(ConnectionProtocol::Handshake),
0 => Some(ConnectionProtocol::Game),
1 => Some(ConnectionProtocol::Status),
2 => Some(ConnectionProtocol::Login),
3 => Some(ConnectionProtocol::Configuration),
_ => None,
}
}
}
/// An enum of packets for a certain protocol
pub trait ProtocolPacket
where
Self: Sized,
{
fn id(&self) -> u32;
/// Read a packet by its id, `ConnectionProtocol`, and flow
fn read(id: u32, buf: &mut Cursor<&[u8]>) -> Result<Self, Box<ReadPacketError>>;
fn write(&self, buf: &mut impl Write) -> Result<(), std::io::Error>;
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum ClientIntention {
Status = 1,
Login = 2,
Transfer = 3,
}
impl TryFrom<i32> for ClientIntention {
type Error = ();
fn try_from(value: i32) -> Result<Self, Self::Error> {
match value {
1 => Ok(ClientIntention::Status),
2 => Ok(ClientIntention::Login),
3 => Ok(ClientIntention::Transfer),
_ => Err(()),
}
}
}
impl From<ClientIntention> for ConnectionProtocol {
fn from(intention: ClientIntention) -> Self {
match intention {
ClientIntention::Status => ConnectionProtocol::Status,
ClientIntention::Login | ClientIntention::Transfer => ConnectionProtocol::Login,
}
}
}
impl azalea_buf::McBufReadable for ClientIntention {
fn read_from(buf: &mut Cursor<&[u8]>) -> Result<Self, BufReadError> {
let id = i32::var_read_from(buf)?;
id.try_into()
.map_err(|_| BufReadError::UnexpectedEnumVariant { id })
}
}
impl McBufWritable for ClientIntention {
fn write_into(&self, buf: &mut impl Write) -> Result<(), std::io::Error> {
(*self as i32).var_write_into(buf)
}
}
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