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//! Module to handle the various possible ClientIds
use core::fmt::Formatter;
use lightyear_serde::reader::{ReadInteger, Reader};
use lightyear_serde::writer::WriteInteger;
use lightyear_serde::{SerializationError, ToBytes};
use serde::{Deserialize, Serialize};
use bevy_derive::Deref;
use bevy_ecs::component::Component;
use bevy_reflect::Reflect;
/// Stores the PeerId of the local peer for the connection
#[derive(
Debug, Component, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize, Reflect, Deref,
)]
pub struct LocalId(pub PeerId);
/// Stores the PeerId of the remote peer that we are connected to
#[derive(
Debug, Component, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize, Reflect, Deref,
)]
pub struct RemoteId(pub PeerId);
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize, Reflect)]
pub enum PeerId {
Entity(u64),
// #[reflect(ignore)]
// // #[reflect(default = "LOCALHOST")]
// IP(SocketAddr),
/// A client id that is unique between netcode connections
Netcode(u64),
/// The client id of a steam user
Steam(u64),
/// A local client to use when running in HostServer mode
Local(u64),
/// Refers to the server
Server,
}
impl ToBytes for PeerId {
fn bytes_len(&self) -> usize {
match self {
PeerId::Entity(_) => 1 + 8,
// PeerId::IP(socket_addr) => {
// // 1 byte for variant + address bytes + 2 bytes for port
// match socket_addr {
// SocketAddr::V4(_) => 1 + 4 + 2,
// SocketAddr::V6(_) => 1 + 16 + 2,
// }
// },
PeerId::Netcode(_) => 1 + 8,
PeerId::Steam(_) => 1 + 8,
PeerId::Local(_) => 1 + 8,
PeerId::Server => 1,
}
}
fn to_bytes(&self, buffer: &mut impl WriteInteger) -> Result<(), SerializationError> {
match self {
PeerId::Entity(id) => {
buffer.write_u8(0)?;
buffer.write_u64(*id)?;
}
// PeerId::IP(socket) => {
// match socket {
// SocketAddr::V4(v4) => {
// buffer.write_u8(1)?;
// // Write IPv4 bytes
// for byte in v4.ip().octets().iter() {
// buffer.write_u8(*byte)?;
// }
// // Write port
// buffer.write_u16(v4.port())?;
// }
// SocketAddr::V6(v6) => {
// buffer.write_u8(2)?;
// // Write IPv6 bytes
// for segment in v6.ip().segments().iter() {
// buffer.write_u16(*segment)?;
// }
// // Write port
// buffer.write_u16(v6.port())?;
// }
// }
// },
PeerId::Netcode(id) => {
buffer.write_u8(3)?;
buffer.write_u64(*id)?;
}
PeerId::Steam(id) => {
buffer.write_u8(4)?;
buffer.write_u64(*id)?;
}
PeerId::Local(id) => {
buffer.write_u8(5)?;
buffer.write_u64(*id)?;
}
PeerId::Server => {
buffer.write_u8(6)?;
}
}
Ok(())
}
fn from_bytes(buffer: &mut Reader) -> Result<Self, SerializationError>
where
Self: Sized,
{
match buffer.read_u8()? {
0 => Ok(PeerId::Entity(buffer.read_u64()?)),
// 1 => {
// // Read IPv4 address
// let a = buffer.read_u8()?;
// let b = buffer.read_u8()?;
// let c = buffer.read_u8()?;
// let d = buffer.read_u8()?;
// let port = buffer.read_u16()?;
// let addr = SocketAddr::new(
// std::net::IpAddr::V4(std::net::Ipv4Addr::new(a, b, c, d)),
// port
// );
// Ok(PeerId::IP(addr))
// },
// 2 => {
// // Read IPv6 address
// let mut segments = [0u16; 8];
// for i in 0..8 {
// segments[i] = buffer.read_u16()?;
// }
// let port = buffer.read_u16()?;
// let addr = SocketAddr::new(
// std::net::IpAddr::V6(std::net::Ipv6Addr::from(segments)),
// port
// );
// Ok(PeerId::IP(addr))
// },
3 => Ok(PeerId::Netcode(buffer.read_u64()?)),
4 => Ok(PeerId::Steam(buffer.read_u64()?)),
5 => Ok(PeerId::Local(buffer.read_u64()?)),
6 => Ok(PeerId::Server),
_ => Err(SerializationError::InvalidValue),
}
}
}
impl PeerId {
// TODO: add impl From<ClientId> for u64?
/// Convert a ClientId to a u64 representation
pub fn to_bits(&self) -> u64 {
match self {
PeerId::Entity(x) => *x,
// PeerId::IP(socket) => {
// // Create a simple hash for the IP address
// // Just for differentiation - not meant to be a secure hash
// match socket {
// SocketAddr::V4(v4) => {
// let octets = v4.ip().octets();
// let mut result: u64 = 0x0200; // Prefix for IPv4
// result |= (octets[0] as u64) << 24;
// result |= (octets[1] as u64) << 16;
// result |= (octets[2] as u64) << 8;
// result |= octets[3] as u64;
// result |= (v4.port() as u64) << 32;
// result
// },
// SocketAddr::V6(v6) => {
// // Simple hash for IPv6 - fold the segments
// let segments = v6.ip().segments();
// let mut hash: u64 = 0x0600; // Prefix for IPv6
// for (i, &segment) in segments.iter().enumerate() {
// hash ^= (segment as u64) << ((i % 4) * 16);
// }
// hash ^= (v6.port() as u64) << 48;
// hash
// }
// }
// },
PeerId::Netcode(x) => *x,
PeerId::Steam(x) => *x,
PeerId::Local(x) => *x,
PeerId::Server => 1,
}
}
pub fn is_local(&self) -> bool {
matches!(self, PeerId::Local(_))
}
}
impl core::fmt::Display for PeerId {
fn fmt(&self, f: &mut Formatter<'_>) -> core::fmt::Result {
core::fmt::Debug::fmt(self, f)
// match self {
// ClientId::Netcode(id) => write!(f, "NetcodeClientId({})", id),
// ClientId::Steam(id) => write!(f, "SteamClientId({})", id),
// ClientId::LocalClient => write!(f, "LocalClientId"),
// }
}
}