steel_protocol/packets/game/
s_spectator_action.rs

1use std::io::{Cursor, Result};
2
3use steel_macros::ServerPacket;
4use steel_utils::codec::VarInt;
5use steel_utils::serial::ReadFrom;
6
7#[derive(ServerPacket, Clone, Debug)]
8pub struct SSpectatorAction {
9    pub spectate_entity_id: Option<i32>,
10}
11
12impl ReadFrom for SSpectatorAction {
13    fn read(data: &mut Cursor<&[u8]>) -> Result<Self> {
14        let spectate_entity_id = Option::<VarInt>::read(data)?.map(|id| id.0);
15        Ok(Self { spectate_entity_id })
16    }
17}
18
19#[cfg(test)]
20mod tests {
21    use super::*;
22
23    #[test]
24    fn reads_absent_entity_id() {
25        let mut data = Cursor::new([0].as_slice());
26        let packet = SSpectatorAction::read(&mut data).expect("packet should parse");
27
28        assert_eq!(packet.spectate_entity_id, None);
29    }
30
31    #[test]
32    fn reads_present_entity_id_as_varint() {
33        let mut data = Cursor::new([1, 62].as_slice());
34        let packet = SSpectatorAction::read(&mut data).expect("packet should parse");
35
36        assert_eq!(packet.spectate_entity_id, Some(62));
37    }
38}

steel_protocol/packets/game/s_spectator_action.rs

steel_protocol/packets/game/
s_spectator_action.rs