rust/hedgewars-server/src/server/core.rs
author alfadur
Thu, 11 Apr 2019 01:13:29 +0300
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use super::{
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    client::HWClient,
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    coretypes::{ClientId, RoomId},
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    indexslab::IndexSlab,
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    room::HWRoom,
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};
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use crate::utils;
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use crate::protocol::messages::HWProtocolMessage::Greeting;
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use bitflags::*;
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use log::*;
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use slab;
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use std::{borrow::BorrowMut, iter, num::NonZeroU16};
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type Slab<T> = slab::Slab<T>;
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pub struct HWAnteClient {
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    pub nick: Option<String>,
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    pub protocol_number: Option<NonZeroU16>,
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    pub server_salt: String,
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    pub is_checker: bool,
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}
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pub struct HWAnteroom {
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    pub clients: IndexSlab<HWAnteClient>,
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}
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impl HWAnteroom {
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    pub fn new(clients_limit: usize) -> Self {
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        let clients = IndexSlab::with_capacity(clients_limit);
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        HWAnteroom { clients }
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    }
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    pub fn add_client(&mut self, client_id: ClientId, salt: String) {
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        let client = HWAnteClient {
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            nick: None,
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            protocol_number: None,
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            server_salt: salt,
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            is_checker: false,
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        };
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        self.clients.insert(client_id, client);
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    }
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    pub fn remove_client(&mut self, client_id: ClientId) -> Option<HWAnteClient> {
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        let mut client = self.clients.remove(client_id);
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        client
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    }
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}
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pub struct ServerGreetings {
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    pub for_latest_protocol: String,
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    pub for_old_protocols: String,
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}
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impl ServerGreetings {
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    fn new() -> Self {
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        Self {
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            for_latest_protocol: "\u{1f994} is watching".to_string(),
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            for_old_protocols: "\u{1f994} is watching".to_string(),
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        }
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    }
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}
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bitflags! {
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    pub struct ServerFlags: u8 {
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        const REGISTERED_ONLY = 0b0000_1000;
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    }
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}
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pub struct HWServer {
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    pub clients: IndexSlab<HWClient>,
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    pub rooms: Slab<HWRoom>,
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    pub anteroom: HWAnteroom,
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    pub latest_protocol: u16,
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    pub flags: ServerFlags,
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    pub greetings: ServerGreetings,
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}
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impl HWServer {
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    pub fn new(clients_limit: usize, rooms_limit: usize) -> Self {
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        let rooms = Slab::with_capacity(rooms_limit);
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        let clients = IndexSlab::with_capacity(clients_limit);
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        Self {
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            clients,
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            rooms,
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            anteroom: HWAnteroom::new(clients_limit),
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            greetings: ServerGreetings::new(),
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            latest_protocol: 58,
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            flags: ServerFlags::empty(),
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        }
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    }
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    pub fn add_client(&mut self, client_id: ClientId, data: HWAnteClient) {
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        if let (Some(protocol), Some(nick)) = (data.protocol_number, data.nick) {
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            let mut client = HWClient::new(client_id, protocol.get(), nick);
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            client.set_is_checker(data.is_checker);
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            self.clients.insert(client_id, client);
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        }
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    }
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    pub fn remove_client(&mut self, client_id: ClientId) {
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        self.clients.remove(client_id);
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    }
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    pub fn get_greetings(&self, client_id: ClientId) -> &str {
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        if self.clients[client_id].protocol_number < self.latest_protocol {
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            &self.greetings.for_old_protocols
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        } else {
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            &self.greetings.for_latest_protocol
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        }
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    }
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    #[inline]
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    pub fn create_room(
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        &mut self,
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        creator_id: ClientId,
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        name: String,
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        password: Option<String>,
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    ) -> RoomId {
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        create_room(
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            &mut self.clients[creator_id],
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            &mut self.rooms,
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            name,
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            password,
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        )
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    }
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    #[inline]
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    pub fn move_to_room(&mut self, client_id: ClientId, room_id: RoomId) {
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        move_to_room(&mut self.clients[client_id], &mut self.rooms[room_id])
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    }
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    pub fn has_room(&self, name: &str) -> bool {
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        self.find_room(name).is_some()
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    }
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    pub fn find_room(&self, name: &str) -> Option<&HWRoom> {
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        self.rooms
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            .iter()
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            .find_map(|(_, r)| Some(r).filter(|r| r.name == name))
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    }
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    pub fn find_room_mut(&mut self, name: &str) -> Option<&mut HWRoom> {
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        self.rooms
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            .iter_mut()
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            .find_map(|(_, r)| Some(r).filter(|r| r.name == name))
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    }
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    pub fn find_client(&self, nick: &str) -> Option<&HWClient> {
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        self.clients
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            .iter()
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            .find_map(|(_, c)| Some(c).filter(|c| c.nick == nick))
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    }
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    pub fn find_client_mut(&mut self, nick: &str) -> Option<&mut HWClient> {
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        self.clients
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            .iter_mut()
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            .find_map(|(_, c)| Some(c).filter(|c| c.nick == nick))
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    }
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    pub fn collect_clients<F>(&self, f: F) -> Vec<ClientId>
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    where
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        F: Fn(&(usize, &HWClient)) -> bool,
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    {
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        self.clients.iter().filter(f).map(|(_, c)| c.id).collect()
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    }
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    pub fn collect_nicks<F>(&self, f: F) -> Vec<String>
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    where
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        F: Fn(&(usize, &HWClient)) -> bool,
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    {
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        self.clients
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            .iter()
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            .filter(f)
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            .map(|(_, c)| c.nick.clone())
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            .collect()
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    }
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    pub fn collect_lobby_clients(&self) -> Vec<ClientId> {
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        self.collect_clients(|(_, c)| c.room_id == None)
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    }
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    pub fn collect_room_clients(&self, room_id: RoomId) -> Vec<ClientId> {
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        self.collect_clients(|(_, c)| c.room_id == Some(room_id))
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    }
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    pub fn protocol_clients(&self, protocol: u16) -> Vec<ClientId> {
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        self.collect_clients(|(_, c)| c.protocol_number == protocol)
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    }
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    pub fn other_clients_in_room(&self, self_id: ClientId) -> Vec<ClientId> {
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        let room_id = self.clients[self_id].room_id;
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        self.collect_clients(|(id, c)| *id != self_id && c.room_id == room_id)
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    }
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    pub fn is_registered_only(&self) -> bool {
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        self.flags.contains(ServerFlags::REGISTERED_ONLY)
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    }
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    pub fn set_is_registered_only(&mut self, value: bool) {
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        self.flags.set(ServerFlags::REGISTERED_ONLY, value)
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    }
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}
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fn allocate_room(rooms: &mut Slab<HWRoom>) -> &mut HWRoom {
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    let entry = rooms.vacant_entry();
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    let room = HWRoom::new(entry.key());
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    entry.insert(room)
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}
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fn create_room(
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    client: &mut HWClient,
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    rooms: &mut Slab<HWRoom>,
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    name: String,
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    password: Option<String>,
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) -> RoomId {
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    let room = allocate_room(rooms);
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    room.master_id = Some(client.id);
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    room.name = name;
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    room.password = password;
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    room.protocol_number = client.protocol_number;
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    room.players_number = 1;
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    room.ready_players_number = 1;
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    client.room_id = Some(room.id);
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    client.set_is_master(true);
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    client.set_is_ready(true);
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    client.set_is_joined_mid_game(false);
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    room.id
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}
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fn move_to_room(client: &mut HWClient, room: &mut HWRoom) {
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    debug_assert!(client.room_id != Some(room.id));
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    room.players_number += 1;
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    client.room_id = Some(room.id);
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    client.set_is_joined_mid_game(room.game_info.is_some());
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    client.set_is_in_game(room.game_info.is_some());
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    if let Some(ref mut info) = room.game_info {
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        let teams = info.client_teams(client.id);
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        client.teams_in_game = teams.clone().count() as u8;
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        client.clan = teams.clone().next().map(|t| t.color);
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        let team_names: Vec<_> = teams.map(|t| t.name.clone()).collect();
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        if !team_names.is_empty() {
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            info.left_teams.retain(|name| !team_names.contains(&name));
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            info.teams_in_game += team_names.len() as u8;
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            room.teams = info
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                .teams_at_start
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                .iter()
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                .filter(|(_, t)| !team_names.contains(&t.name))
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                .cloned()
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                .collect();
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        }
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    }
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}