diff -r 7732013ce64c -r c5a6e8566425 rust/hedgewars-server/src/core/client.rs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rust/hedgewars-server/src/core/client.rs	Tue May 28 19:04:18 2019 +0300
@@ -0,0 +1,109 @@
+use super::types::ClientId;
+use bitflags::*;
+
+bitflags! {
+    pub struct ClientFlags: u16 {
+        const IS_ADMIN = 0b0000_0001;
+        const IS_MASTER = 0b0000_0010;
+        const IS_READY = 0b0000_0100;
+        const IS_IN_GAME = 0b0000_1000;
+        const IS_JOINED_MID_GAME = 0b0001_0000;
+        const IS_CHECKER = 0b0010_0000;
+        const IS_CONTRIBUTOR = 0b0100_0000;
+        const HAS_SUPER_POWER = 0b1000_0000;
+        const IS_REGISTERED = 0b0001_0000_0000;
+
+        const NONE = 0b0000_0000;
+        const DEFAULT = Self::NONE.bits;
+    }
+}
+
+pub struct HWClient {
+    pub id: ClientId,
+    pub room_id: Option<usize>,
+    pub nick: String,
+    pub protocol_number: u16,
+    pub flags: ClientFlags,
+    pub teams_in_game: u8,
+    pub team_indices: Vec<u8>,
+    pub clan: Option<u8>,
+}
+
+impl HWClient {
+    pub fn new(id: ClientId, protocol_number: u16, nick: String) -> HWClient {
+        HWClient {
+            id,
+            nick,
+            protocol_number,
+            room_id: None,
+            flags: ClientFlags::DEFAULT,
+            teams_in_game: 0,
+            team_indices: Vec::new(),
+            clan: None,
+        }
+    }
+
+    fn contains(&self, mask: ClientFlags) -> bool {
+        self.flags.contains(mask)
+    }
+
+    fn set(&mut self, mask: ClientFlags, value: bool) {
+        self.flags.set(mask, value);
+    }
+
+    pub fn is_admin(&self) -> bool {
+        self.contains(ClientFlags::IS_ADMIN)
+    }
+    pub fn is_master(&self) -> bool {
+        self.contains(ClientFlags::IS_MASTER)
+    }
+    pub fn is_ready(&self) -> bool {
+        self.contains(ClientFlags::IS_READY)
+    }
+    pub fn is_in_game(&self) -> bool {
+        self.contains(ClientFlags::IS_IN_GAME)
+    }
+    pub fn is_joined_mid_game(&self) -> bool {
+        self.contains(ClientFlags::IS_JOINED_MID_GAME)
+    }
+    pub fn is_checker(&self) -> bool {
+        self.contains(ClientFlags::IS_CHECKER)
+    }
+    pub fn is_contributor(&self) -> bool {
+        self.contains(ClientFlags::IS_CONTRIBUTOR)
+    }
+    pub fn has_super_power(&self) -> bool {
+        self.contains(ClientFlags::HAS_SUPER_POWER)
+    }
+    pub fn is_registered(&self) -> bool {
+        self.contains(ClientFlags::IS_REGISTERED)
+    }
+
+    pub fn set_is_admin(&mut self, value: bool) {
+        self.set(ClientFlags::IS_ADMIN, value)
+    }
+    pub fn set_is_master(&mut self, value: bool) {
+        self.set(ClientFlags::IS_MASTER, value)
+    }
+    pub fn set_is_ready(&mut self, value: bool) {
+        self.set(ClientFlags::IS_READY, value)
+    }
+    pub fn set_is_in_game(&mut self, value: bool) {
+        self.set(ClientFlags::IS_IN_GAME, value)
+    }
+    pub fn set_is_joined_mid_game(&mut self, value: bool) {
+        self.set(ClientFlags::IS_JOINED_MID_GAME, value)
+    }
+    pub fn set_is_checker(&mut self, value: bool) {
+        self.set(ClientFlags::IS_CHECKER, value)
+    }
+    pub fn set_is_contributor(&mut self, value: bool) {
+        self.set(ClientFlags::IS_CONTRIBUTOR, value)
+    }
+    pub fn set_has_super_power(&mut self, value: bool) {
+        self.set(ClientFlags::HAS_SUPER_POWER, value)
+    }
+    pub fn set_is_registered(&mut self, value: bool) {
+        self.set(ClientFlags::IS_REGISTERED, value)
+    }
+}