packetize

• Supports fast packet encoding and decoding for network packets.
• Features packet framing with macros.
• Designed for multiple packet formats (e.g., WebSocket, Minecraft, TCP)

use fast_collections::Cursor;
use packetize::{streaming_packets, Decode, Encode, SimplePacketStreamFormat};

#[streaming_packets(SimplePacketStreamFormat)]
#[derive(Debug, Default, PartialEq, Eq, PartialOrd, Ord)]
pub enum PacketStreamState {
    #[default]
    HandShake(#[change_state_to(Login)] HandShakeS2c),
    Login(LoginRequestS2c, LoginSuccessC2s),
    //...
}

#[derive(Encode, Decode)]
pub struct HandShakeS2c {
    protocol_version: i32,
}

#[derive(Encode, Decode)]
pub struct LoginRequestS2c {}

#[derive(Encode, Decode)]
pub struct LoginSuccessC2s {}

#[test]
fn test_change_state() {
    let cursor = &mut Cursor::<u8, 100>::new();
    let mut state = PacketStreamState::HandShake;
    state
        .encode_client_bound_packet(
            &HandShakeS2c {
                protocol_version: 123,
            }
            .into(),
            cursor,
        )
        .unwrap();
    assert_eq!(state, PacketStreamState::Login);
}