wip: возможность получения загаданной стрелки только после попытки отгадки

.gitignore

@@ -38,4 +38,7 @@ env/
 venv/
 ENV/
 env.bak/
-venv.bak/
+venv.bak/
+
+# Sandbox
+sandbox

src/mind_reader/domain/__init__.py

@@ -0,0 +1,22 @@
+from .common import Player, PlayerRole
+from .context import SessionContext
+from .session import (
+    ArrowDirection,
+    CardData,
+    CardState,
+    SessionStats,
+    StepData,
+    StepState,
+)
+
+__all__ = [
+    "Player",
+    "PlayerRole",
+    "SessionContext",
+    "ArrowDirection",
+    "CardData",
+    "CardState",
+    "SessionStats",
+    "StepData",
+    "StepState",
+]

src/mind_reader/domain/common.py

@@ -0,0 +1,13 @@
+from dataclasses import dataclass
+from enum import Enum, StrEnum, auto
+
+
+class PlayerRole(StrEnum):
+    SETTER = auto()
+    GUESSER = auto()
+
+
+@dataclass
+class Player:
+    name: str
+    role: PlayerRole

src/mind_reader/domain/context.py

@@ -0,0 +1,16 @@
+from dataclasses import dataclass
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from ..input import SessionInput
+    from ..network import NetworkController
+    from ..state import SessionState
+    from ..ui.views import SessionPanel
+
+
+@dataclass(frozen=True)
+class SessionContext:
+    input: "SessionInput"
+    network: "NetworkController"
+    state: "SessionState"
+    view: "SessionPanel"

src/mind_reader/domain/session.py

@@ -0,0 +1,56 @@
+from dataclasses import dataclass
+from enum import Enum, StrEnum, auto
+from typing import Optional
+
+
+class ArrowDirection(StrEnum):
+    LEFT = auto()
+    RIGHT = auto()
+    HIDDEN = auto()
+
+
+class StepState(Enum):
+    WAITING_FOR_SETTER = auto()
+    WAITING_FOR_GUESSER = auto()
+    WAITING_FOR_CLOSURE = auto()
+    SESSION_FINISHED = auto()
+
+
+class CardState(Enum):
+    SETTER_NOT_SET = auto()
+    SETTER_HIDDEN = auto()
+    SETTER_REVEALED = auto()
+    GUESSER_DISABLED = auto()
+    GUESSER_WAITING = auto()
+    GUESSER_CORRECT = auto()
+    GUESSER_WRONG = auto()
+
+
+@dataclass(frozen=True)
+class CardData:
+    direction: Optional[ArrowDirection]
+    state: CardState
+
+
+@dataclass(frozen=True)
+class StepData:
+    index: int
+    setter: CardData
+    guesser: CardData
+
+
+@dataclass
+class SessionStats:
+    total: int
+    setted: int
+    correct: int
+    wrong: int
+    taken_time: float
+
+    @property
+    def accuracy(self) -> float:
+        accuracy: float
+        if self.total == 0:
+            accuracy = 0.0
+        accuracy = (self.correct / self.total) * 100
+        return round(accuracy, 1)

src/mind_reader/input/__init__.py

@@ -0,0 +1,3 @@
+from .session_input import SessionInput
+
+__all__ = ["SessionInput"]

src/mind_reader/input/session_input.py

@@ -0,0 +1,70 @@
+from ..domain import ArrowDirection, Player, PlayerRole
+from ..network import NetworkController, NetworkMessage, NetworkMessageKind
+
+
+class SessionInput:
+    def __init__(self, local_player: Player, network: NetworkController):
+        self._local_player = local_player
+        self._network = network
+
+    def start_session(self) -> None:
+        self._network.send(
+            NetworkMessage(NetworkMessageKind.SESSION_SESSION_STARTED, {})
+        )
+
+    def player_move(self, direction: ArrowDirection) -> None:
+        match self._local_player.role:
+            case PlayerRole.SETTER:
+                local_message = NetworkMessage(
+                    NetworkMessageKind.SESSION_PLAYER_MOVED,
+                    {
+                        "player": {
+                            "name": self._local_player.name,
+                            "role": self._local_player.role,
+                        },
+                        "arrow_direction": direction,
+                    },
+                )
+
+                network_message = NetworkMessage(
+                    NetworkMessageKind.SESSION_PLAYER_MOVED,
+                    {
+                        "player": {
+                            "name": self._local_player.name,
+                            "role": self._local_player.role,
+                        },
+                        "arrow_direction": ArrowDirection.HIDDEN,
+                    },
+                    local_message.id,
+                )
+
+                self._network.send_with_looback(local_message, network_message)
+
+            case PlayerRole.GUESSER:
+                self._network.send(
+                    NetworkMessage(
+                        NetworkMessageKind.SESSION_PLAYER_MOVED,
+                        {
+                            "player": {
+                                "name": self._local_player.name,
+                                "role": self._local_player.role,
+                            },
+                            "arrow_direction": direction,
+                        },
+                    )
+                )
+
+                self._network.send(
+                    NetworkMessage(
+                        NetworkMessageKind.SESSION_SECRET_REVEAL_REQUESTED,
+                        {
+                            "player": {
+                                "name": self._local_player.name,
+                                "role": self._local_player.role,
+                            },
+                        },
+                    )
+                )
+
+    def finish_session(self) -> None:
+        pass

src/mind_reader/network/__init__.py

@@ -1,7 +1,11 @@
 from .controller import NetworkController
-from .protocol import NetworkMesssage
+from .enums import NetworkMessageKind
+from .handlers import SessionNetworkMessageHandler
+from .message import NetworkMessage
 
 __all__ = [
     "NetworkController",
-    "NetworkMesssage",
+    "NetworkMessageKind",
+    "SessionNetworkMessageHandler",
+    "NetworkMessage",
 ]

src/mind_reader/network/controller.py

@@ -1,150 +1,80 @@
-import socket
-import struct
-import threading
-from typing import Callable, Optional
+from typing import Callable
 
-import wx
+import paho.mqtt.client as mqtt
+from paho.mqtt.enums import CallbackAPIVersion
 
-from .protocol import NetworkMesssage
+from .enums import NetworkMessageKind
+from .message import NetworkMessage
 
-OnMessageCallback = Callable[[NetworkMesssage], None]
-OnNoticeCallback = Callable[[str], None]
+MessageHandler = Callable[[NetworkMessage], None]
 
 
-def receive_exact(sock: socket.socket, n: int) -> Optional[bytes]:
-    data = bytearray()
+class NetworkController:
+    def __init__(self, host: str, port: int, username: str, password: str):
+        self._handlers: set[MessageHandler] = set()
+        self._pending_loopbacks: dict[str, NetworkMessage] = {}
 
-    while len(data) < n:
-        packet = sock.recv(n - len(data))
-        if not packet:
-            return None
-        data.extend(packet)
+        self._topic = "mind_reader"
+        self._client = mqtt.Client(CallbackAPIVersion.VERSION2)
+        self._client.username_pw_set(username, password)
+        self._client.on_message = self._on_message
+        self._client.connect(host, port)
+        self._client.subscribe("mind_reader/#")
 
-    return bytes(data)
-
-
-class NetworkController(threading.Thread):
-    def __init__(
-        self,
-        on_message_callback: OnMessageCallback,
-        on_notice_callback: Optional[OnNoticeCallback] = None,
-    ):
-        super().__init__(daemon=True)
-        self.on_message_callback = on_message_callback
-        self.on_notice_callback = on_notice_callback
-
-        self.sock: Optional[socket.socket] = None
-        self.conn: Optional[socket.socket] = None
-
-        self.is_running: bool = False
-        self.is_server: bool = False
-
-    def serve(self, host: str = "0.0.0.0", port: int = 8994) -> None:
-        self.is_server = True
-
-        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-        self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-        self.sock.bind((host, port))
-        self.sock.listen(1)
-
-        self.is_running = True
-        self.start()
-
-    def connect(self, host: str, port: int = 8994) -> bool:
-        self.is_server = False
-
-        try:
-            self.conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-            self.conn.connect((host, port))
-
-            self.is_running = True
-            self._notify("Connected to host")
-            self.start()
-            return True
-        except Exception as e:
-            self._notify(f"Connection failed: {e}")
-            return False
-
-    def send(self, event: str, payload: dict = {}) -> None:
-        if not self.conn or not self.is_running:
-            return
-
-        m = NetworkMesssage(event, payload)
-
-        try:
-            self.conn.sendall(m.encode())
-        except Exception as e:
-            self._notify(f"Send error: {e}")
-            self._close_active_connection()
-
-    def run(self) -> None:
-        HEADER_SIZE = 4
-
-        while self.is_running:
-            if self.is_server and self.sock and not self.conn:
-                self._notify("Waiting for peer to connect...")
-
-                try:
-                    self.conn, addr = self.sock.accept()
-                    self._notify(f"Peer connected from {addr[0]}:{addr[1]}")
-                except Exception:
-                    break
-
-            while self.is_running and self.conn:
-                try:
-                    header_bytes = receive_exact(self.conn, HEADER_SIZE)
-                    if not header_bytes:
-                        self._notify("Peer disconnected")
-                        break
-
-                    body_size = struct.unpack(">I", header_bytes)[0]
-
-                    body_bytes = receive_exact(self.conn, body_size)
-                    if not body_bytes:
-                        self._notify("Peer disconnected unexpectedly")
-                        break
-
-                    json_str = body_bytes.decode("utf-8")
-                    m = NetworkMesssage.from_json(json_str)
-
-                    wx.CallAfter(self.on_message_callback, m)
-
-                except Exception as e:
-                    self._notify(f"Read error: {e}")
-                    break
-
-            self._close_active_connection()
-
-            if not self.is_server:
-                break
-
-        self.stop()
-
-    def _close_active_connection(self) -> None:
-        if self.conn:
-            try:
-                self.conn.shutdown(socket.SHUT_RDWR)
-                self.conn.close()
-            except Exception:
-                pass
-            finally:
-                self.conn = None
-
-    def _notify(self, notice: str) -> None:
-        if self.on_notice_callback:
-            wx.CallAfter(self.on_notice_callback, notice)
+    def start(self) -> None:
+        self._client.loop_start()
 
     def stop(self) -> None:
-        self.is_running = False
+        self._client.loop_stop()
+        self._client.disconnect()
 
-        self._close_active_connection()
+    def add_handler(self, handler: MessageHandler) -> None:
+        self._handlers.add(handler)
 
-        if self.sock:
-            try:
-                self.sock.close()
-            except Exception:
-                pass
-            finally:
-                self.sock = None
+    def remove_handler(self, handler: MessageHandler) -> None:
+        self._handlers.remove(handler)
 
-        self._notify("Connection closed")
+    def send(self, network_message: NetworkMessage) -> None:
+        kind = network_message.kind
+        payload = network_message.to_json()
+
+        match kind:
+            case (
+                NetworkMessageKind.SESSION_PLAYER_MOVED
+                | NetworkMessageKind.SESSION_SECRET_REVEAL_REQUESTED
+                | NetworkMessageKind.SESSION_SECRET_REVEALED
+                | NetworkMessageKind.SESSION_SESSION_FINISHED
+                | NetworkMessageKind.SESSION_SESSION_STARTED
+            ):
+                topic = f"{self._topic}/session"
+                self._client.publish(topic, payload)
+
+    def send_with_looback(
+        self,
+        local_message: NetworkMessage,
+        network_message: NetworkMessage,
+    ) -> None:
+        if local_message.id != network_message.id:
+            raise ValueError(
+                f"Mismatched message IDs in send_with_loopback: "
+                f"local_message.id='{local_message.id}' vs network_message.id='{network_message.id}'"
+            )
+
+        self._pending_loopbacks[local_message.id] = local_message
+        self.send(network_message)
+
+    def _handle(self, network_message: NetworkMessage) -> None:
+        for handler in self._handlers:
+            handler(network_message)
+
+    def _on_message(
+        self, client: mqtt.Client, userdata: None, message: mqtt.MQTTMessage
+    ) -> None:
+        json_str = message.payload.decode("utf-8")
+        incoming_message = NetworkMessage.from_json(json_str)
+
+        if incoming_message.id in self._pending_loopbacks:
+            local_message = self._pending_loopbacks.pop(incoming_message.id)
+            self._handle(local_message)
+        else:
+            self._handle(incoming_message)

src/mind_reader/network/enums.py

@@ -0,0 +1,15 @@
+from enum import StrEnum
+
+
+class NetworkMessageKind(StrEnum):
+    # ----- Lobby -----
+
+    # ---- Session ----
+    SESSION_SESSION_STARTED = "session_started"
+    SESSION_PLAYER_MOVED = "player_moved"
+    SESSION_SECRET_REVEAL_REQUESTED = "secret_reveal_requested"
+    SESSION_SECRET_REVEALED = "secret_revealed"
+    SESSION_SESSION_FINISHED = "session_finished"
+
+    # ---- System -----
+    SYSTEM_INC_MSG_PA_ERR = "incoming_message_parsing_error"

src/mind_reader/network/handlers.py

@@ -0,0 +1,47 @@
+from ..domain import ArrowDirection, Player, PlayerRole
+from ..state import SessionState
+from .controller import NetworkController
+from .enums import NetworkMessageKind
+from .message import NetworkMessage
+
+
+class SessionNetworkMessageHandler:
+    def __init__(self, network: NetworkController, state: SessionState):
+        self._network = network
+        self._state = state
+
+    def __call__(self, message: NetworkMessage):
+        match message.kind:
+            case NetworkMessageKind.SESSION_SESSION_STARTED:
+                self._state.start_session()
+
+            case NetworkMessageKind.SESSION_PLAYER_MOVED:
+                player_role = PlayerRole(message.payload["player"]["role"])
+                direction = ArrowDirection(message.payload["arrow_direction"])
+
+                match player_role:
+                    case PlayerRole.SETTER:
+                        self._state.setter_move(direction)
+                    case PlayerRole.GUESSER:
+                        self._state.guesser_move(direction)
+
+            case NetworkMessageKind.SESSION_SECRET_REVEAL_REQUESTED:
+                self._network.send(
+                    NetworkMessage(
+                        NetworkMessageKind.SESSION_SECRET_REVEALED,
+                        {
+                            "player": {
+                                "name": self._state.local_player.name,
+                                "role": self._state.local_player.role,
+                            },
+                            "arrow_direction": self._state.reveal_setter_move(),
+                        },
+                    )
+                )
+
+            case NetworkMessageKind.SESSION_SECRET_REVEALED:
+                direction = ArrowDirection(message.payload["arrow_direction"])
+                self._state.step_close(direction)
+
+            case NetworkMessageKind.SESSION_SESSION_FINISHED:
+                pass

src/mind_reader/network/message.py

@@ -0,0 +1,34 @@
+import json
+from dataclasses import asdict, dataclass, field
+from typing import Any, Optional
+
+from uuid_extensions import uuid7str
+
+from .enums import NetworkMessageKind
+
+
+@dataclass(frozen=True)
+class NetworkMessage:
+    kind: NetworkMessageKind
+    payload: dict[str, Any]
+    id: str = field(default_factory=uuid7str)
+
+    def to_json(self) -> str:
+        data = asdict(self)
+        data["kind"] = self.kind.value
+        return json.dumps(data)
+
+    @classmethod
+    def from_json(cls, json_str: str) -> "NetworkMessage":
+        try:
+            data = json.loads(json_str)
+            return cls(
+                id=data["id"],
+                kind=NetworkMessageKind(data["kind"]),
+                payload=data.get("payload", {}),
+            )
+        except (json.JSONDecodeError, KeyError, ValueError) as e:
+            return cls(
+                kind=NetworkMessageKind.SYSTEM_INC_MSG_PA_ERR,
+                payload={"exception": e},
+            )

src/mind_reader/network/protocol.py

@@ -1,46 +0,0 @@
-import itertools
-import json
-import struct
-from dataclasses import dataclass, field
-
-_id_generator = itertools.count(0)
-
-
-@dataclass
-class NetworkMesssage:
-    event: str
-    payload: dict[str, str] = field(default_factory=dict)
-    id: int = field(default_factory=lambda: next(_id_generator))
-    version: str = "1.0"
-
-    def to_json(self) -> str:
-        return json.dumps(
-            {
-                "version": self.version,
-                "id": self.id,
-                "event": self.event,
-                "payload": self.payload,
-            },
-            ensure_ascii=False,
-        )
-
-    @classmethod
-    def from_json(cls, json_str: str) -> "NetworkMesssage":
-        data = json.loads(json_str)
-        return cls(
-            event=data.get("event", "unknown"),
-            payload=data.get("payload", {}),
-            id=data.get("id", -1),
-            version=data.get("version", "unknown"),
-        )
-
-    def encode(self) -> bytes:
-        raw_bytes = self.to_json().encode("utf-8")
-        length_prefix = struct.pack(">I", len(raw_bytes))
-        return length_prefix + raw_bytes
-
-
-if __name__ == "__main__":
-    for i in range(10):
-        message = NetworkMesssage("none")
-        print(message.encode())

src/mind_reader/state/__init__.py

@@ -0,0 +1,3 @@
+from .session_state import SessionState
+
+__all__ = ["SessionState"]

src/mind_reader/state/session_state.py

@@ -0,0 +1,219 @@
+from wx.lib.pubsub import pub
+
+from mind_reader.domain import (
+    ArrowDirection,
+    CardData,
+    CardState,
+    Player,
+    PlayerRole,
+    StepData,
+    StepState,
+)
+
+
+class SessionState:
+    def __init__(
+        self,
+        local_player: Player,
+        remote_player: Player,
+        sequence_length: int = 20,
+    ):
+        self._local_player = local_player
+        self._remote_player = remote_player
+
+        self._sequence_length = sequence_length
+        self._setter_moves: list[ArrowDirection] = []
+        self._guesser_moves: list[ArrowDirection] = []
+
+        self._step_state: StepState = StepState.WAITING_FOR_SETTER
+
+    @property
+    def _completed_move_count(self):
+        return len(self._guesser_moves)
+
+    def _get_setter_card_state(self, index: int) -> CardState:
+        completed = self._completed_move_count
+
+        if index > completed:
+            return CardState.SETTER_NOT_SET
+
+        elif index == completed:
+            if self._local_player.role == PlayerRole.SETTER:
+                return CardState.SETTER_REVEALED
+            else:
+                return CardState.SETTER_HIDDEN
+
+        return CardState.SETTER_REVEALED
+
+    def _get_guesser_card_state(self, index: int) -> CardState:
+        completed = self._completed_move_count
+
+        if index > completed:
+            return CardState.GUESSER_DISABLED
+
+        elif index == completed:
+            if self._step_state == StepState.WAITING_FOR_GUESSER:
+                return CardState.GUESSER_WAITING
+            else:
+                return CardState.GUESSER_DISABLED
+
+        else:
+            setter_move = self._setter_moves[index]
+            guesser_move = self._guesser_moves[index]
+            if setter_move == guesser_move:
+                return CardState.GUESSER_CORRECT
+            else:
+                return CardState.GUESSER_WRONG
+
+    def start_session(self) -> None:
+        index = 0
+        pub.sendMessage(
+            "session.session_started",
+            step=StepData(
+                index=index,
+                setter=CardData(
+                    direction=None,
+                    state=self._get_setter_card_state(index),
+                ),
+                guesser=CardData(
+                    direction=None,
+                    state=self._get_guesser_card_state(index),
+                ),
+            ),
+        )
+
+    def setter_move(self, direction: ArrowDirection) -> bool:
+        if self._step_state != StepState.WAITING_FOR_SETTER:
+            return False
+
+        self._setter_moves.append(direction)
+        self._step_state = StepState.WAITING_FOR_GUESSER
+
+        index = len(self._setter_moves) - 1
+
+        pub.sendMessage(
+            "session.setter_moved",
+            step=StepData(
+                index=index,
+                setter=CardData(
+                    direction=direction,
+                    state=self._get_setter_card_state(index),
+                ),
+                guesser=CardData(
+                    direction=direction,
+                    state=self._get_guesser_card_state(index),
+                ),
+            ),
+        )
+        return True
+
+    def guesser_move(self, direction: ArrowDirection) -> bool:
+        if self._step_state != StepState.WAITING_FOR_GUESSER:
+            return False
+
+        self._guesser_moves.append(direction)
+        self._step_state = StepState.WAITING_FOR_CLOSURE
+        return True
+
+    def step_close(self, direction: ArrowDirection) -> bool:
+        if self._step_state != StepState.WAITING_FOR_CLOSURE:
+            return False
+
+        if self._completed_move_count < self._sequence_length:
+            self._step_state = StepState.WAITING_FOR_SETTER
+        else:
+            self._step_state = StepState.SESSION_FINISHED
+
+        if self._local_player.role == PlayerRole.GUESSER:
+            self._setter_moves[-1] = direction
+
+        index = len(self._guesser_moves) - 1
+
+        pub.sendMessage(
+            "session.guesser_moved",
+            step=StepData(
+                index=index,
+                setter=CardData(
+                    direction=self._setter_moves[index],
+                    state=self._get_setter_card_state(index),
+                ),
+                guesser=CardData(
+                    direction=self._guesser_moves[index],
+                    state=self._get_guesser_card_state(index),
+                ),
+            ),
+        )
+
+        next = index + 1
+
+        pub.sendMessage(
+            "session.step_closed",
+            step=StepData(
+                index=next,
+                setter=CardData(
+                    direction=None,
+                    state=self._get_setter_card_state(next),
+                ),
+                guesser=CardData(
+                    direction=None,
+                    state=self._get_guesser_card_state(next),
+                ),
+            ),
+        )
+
+        if self._step_state == StepState.SESSION_FINISHED:
+            pub.sendMessage("session.session_finished")
+
+        return True
+
+    def reveal_setter_move(self) -> ArrowDirection:
+        if self._local_player.role == PlayerRole.SETTER:
+            if self._step_state == StepState.WAITING_FOR_CLOSURE:
+                return self._setter_moves[-1]
+
+        return ArrowDirection.HIDDEN
+
+    def local_move(self, direction: ArrowDirection) -> bool:
+        if not self.can_local_move():
+            return False
+        if self._local_player.role == PlayerRole.SETTER:
+            return self.setter_move(direction)
+        else:
+            return self.guesser_move(direction)
+
+    def can_local_move(self) -> bool:
+        match self._step_state:
+            case StepState.WAITING_FOR_SETTER:
+                return self._local_player.role == PlayerRole.SETTER
+            case StepState.WAITING_FOR_GUESSER:
+                return self._local_player.role == PlayerRole.GUESSER
+            case StepState.WAITING_FOR_CLOSURE:
+                return False
+            case StepState.SESSION_FINISHED:
+                return False
+
+    @property
+    def setter_name(self) -> str:
+        if self._local_player.role == PlayerRole.SETTER:
+            return self._local_player.name
+        else:
+            return self._remote_player.name
+
+    @property
+    def guesser_name(self) -> str:
+        if self._local_player.role == PlayerRole.GUESSER:
+            return self._local_player.name
+        else:
+            return self._remote_player.name
+
+    @property
+    def sequence_length(self) -> int:
+        return self._sequence_length
+
+    @property
+    def local_player(self) -> Player:
+        return self._local_player
+
+    @property
+    def remote_player(self) -> Player:
+        return self._remote_player

src/mind_reader/ui/views/__init__.py

@@ -1,5 +1,4 @@
-from mind_reader.ui.views.lobby_view import LobbyPanel
+# from .lobby_view import LobbyPanel
+from .session_view import SessionPanel
 
-__all__ = [
-    "LobbyPanel",
-]
+__all__ = ["SessionPanel"]

src/mind_reader/ui/views/session_view.py

@@ -0,0 +1,379 @@
+import sys
+from dataclasses import dataclass
+from typing import Callable, Optional
+
+import wx
+from wx.lib.pubsub import pub
+
+from ...domain import ArrowDirection, CardState, SessionStats, StepData
+from ...input import SessionInput
+from ...state import SessionState
+
+
+@dataclass(frozen=True)
+class SetterCardColour:
+    NOT_SET = wx.Colour(82, 97, 107)
+    HIDDEN = wx.Colour(201, 214, 223)
+    REVEALED = wx.Colour(240, 245, 249)
+
+
+@dataclass(frozen=True)
+class GuesserCardColour:
+    DISABLED = wx.Colour(82, 97, 107)
+    WAITING = wx.Colour(201, 214, 223)
+    CORRECT = wx.Colour(76, 175, 80)
+    WRONG = wx.Colour(229, 115, 115)
+
+
+@dataclass(frozen=True)
+class ArrowSymbol:
+    LEFT: str = "←"
+    RIGHT: str = "→"
+    HIDDEN: str = "?"
+
+
+class Card(wx.Panel):
+    def __init__(self, parent, state: CardState):
+        super().__init__(parent, style=wx.BORDER_SIMPLE)
+        self._direction: Optional[ArrowDirection] = None
+        self._state = state
+        self._setup()
+        self._update()
+
+    def _setup(self):
+        self.SetMinSize(wx.Size(45, 75))
+
+        self.label = wx.StaticText(self, style=wx.ALIGN_CENTER)
+
+        font = self.label.GetFont()
+        font.SetPointSize(20)
+        self.label.SetFont(font)
+
+        sizer = wx.BoxSizer(wx.VERTICAL)
+        sizer.Add(self.label, 0, wx.EXPAND)
+
+        self.SetSizer(sizer)
+
+    def _update(self):
+        match self._state:
+            case CardState.SETTER_NOT_SET:
+                colour = SetterCardColour.NOT_SET
+                show_arrow = False
+
+            case CardState.SETTER_HIDDEN:
+                colour = SetterCardColour.HIDDEN
+                show_arrow = True
+
+            case CardState.SETTER_REVEALED:
+                colour = SetterCardColour.REVEALED
+                show_arrow = True
+
+            case CardState.GUESSER_DISABLED:
+                colour = GuesserCardColour.DISABLED
+                show_arrow = False
+
+            case CardState.GUESSER_WAITING:
+                colour = GuesserCardColour.WAITING
+                show_arrow = False
+
+            case CardState.GUESSER_CORRECT:
+                colour = GuesserCardColour.CORRECT
+                show_arrow = True
+
+            case CardState.GUESSER_WRONG:
+                colour = GuesserCardColour.WRONG
+                show_arrow = True
+
+        if show_arrow and self._direction:
+            match self._direction:
+                case ArrowDirection.LEFT:
+                    symbol = ArrowSymbol.LEFT
+
+                case ArrowDirection.RIGHT:
+                    symbol = ArrowSymbol.RIGHT
+
+                case ArrowDirection.HIDDEN:
+                    symbol = ArrowSymbol.HIDDEN
+
+            self.label.SetLabel(symbol)
+
+        else:
+            self.label.SetLabel("")
+
+        self.SetBackgroundColour(colour)
+
+        self.Layout()
+        self.Refresh()
+
+    def set(
+        self,
+        state: CardState,
+        direction: Optional[ArrowDirection] = None,
+    ) -> None:
+        self._state = state
+        self._direction = direction
+        self._update()
+
+
+class SessionPanel(wx.Panel):
+    def __init__(
+        self,
+        parent,
+        input: SessionInput,
+        setter_name: str,
+        guesser_name: str,
+        sequence_length: int,
+    ):
+        super().__init__(parent)
+
+        self._input = input
+
+        self._setter_name = setter_name
+        self._guesser_name = guesser_name
+        self._sequence_length = sequence_length
+
+        self._setter_sequence: list[Card] = []
+        self._guesser_sequence: list[Card] = []
+
+        self._statusbar = self._get_statusbar()
+        self._setup_statusbar()
+
+        self._setup()
+        self._fit_parent_frame()
+
+        pub.subscribe(self._on_session_started, "session.session_started")
+        pub.subscribe(self._on_setter_moved, "session.setter_moved")
+        pub.subscribe(self._on_guesser_moved, "session.guesser_moved")
+        pub.subscribe(self._on_step_closed, "session.step_closed")
+        pub.subscribe(self._on_session_finished, "session.session_finished")
+
+    def _setup(self) -> None:
+        main_sizer = wx.BoxSizer(wx.VERTICAL)
+
+        setter_sizer = self._create_sequence_section(
+            title=f"Загадывает: {self._setter_name}",
+            sequence=self._setter_sequence,
+            sequence_length=self._sequence_length,
+            initial_card_state=CardState.SETTER_NOT_SET,
+        )
+
+        guesser_sizer = self._create_sequence_section(
+            title=f"Угадывает: {self._guesser_name}",
+            sequence=self._guesser_sequence,
+            sequence_length=self._sequence_length,
+            initial_card_state=CardState.GUESSER_DISABLED,
+        )
+
+        controls_sizer = self._create_controls_sizer(
+            on_left=self._on_left_click,
+            on_right=self._on_right_click,
+        )
+
+        secondary_sizer = wx.BoxSizer(wx.VERTICAL)
+        secondary_sizer.Add(setter_sizer, 0, wx.EXPAND)
+        secondary_sizer.Add(guesser_sizer, 0, wx.EXPAND)
+        secondary_sizer.Add(
+            controls_sizer, 0, wx.ALIGN_CENTER | wx.TOP | wx.BOTTOM, 25
+        )
+
+        main_sizer.Add(secondary_sizer, 0, wx.LEFT | wx.ALL, 0)
+
+        self.SetSizer(main_sizer)
+
+    def _create_sequence_section(
+        self,
+        title: str,
+        sequence: list[Card],
+        sequence_length: int,
+        initial_card_state: CardState,
+    ) -> wx.Sizer:
+        section_sizer = wx.BoxSizer(wx.VERTICAL)
+        title_label = wx.StaticText(self, label=title)
+        cards_sizer = wx.BoxSizer(wx.HORIZONTAL)
+
+        for _ in range(sequence_length):
+            card = Card(self, initial_card_state)
+            cards_sizer.Add(card, 0, wx.ALL, 4)
+            sequence.append(card)
+
+        section_sizer.Add(title_label, 0, wx.LEFT | wx.TOP, 9)
+        section_sizer.Add(cards_sizer, 0, wx.ALL, 5)
+
+        return section_sizer
+
+    def _create_controls_sizer(
+        self,
+        on_left: Callable[[wx.CommandEvent], None],
+        on_right: Callable[[wx.CommandEvent], None],
+    ) -> wx.Sizer:
+        left = wx.Button(self, label=ArrowSymbol.LEFT, size=wx.Size(145, 55))
+        right = wx.Button(self, label=ArrowSymbol.RIGHT, size=wx.Size(145, 55))
+
+        font = left.GetFont()
+        font.SetPointSize(22)
+
+        left.SetFont(font)
+        right.SetFont(font)
+
+        left.Bind(wx.EVT_BUTTON, on_left)
+        right.Bind(wx.EVT_BUTTON, on_right)
+
+        controls_sizer = wx.BoxSizer(wx.HORIZONTAL)
+        controls_sizer.Add(left, 0, wx.RIGHT, 10)
+        controls_sizer.Add(right, 0, wx.LEFT, 10)
+
+        return controls_sizer
+
+    def _get_statusbar(self) -> Optional[wx.StatusBar]:
+        top_frame = self.GetTopLevelParent()
+
+        if isinstance(top_frame, wx.Frame):
+            statusbar = top_frame.GetStatusBar()
+            if not statusbar:
+                statusbar = top_frame.CreateStatusBar(1)
+            statusbar.SetFieldsCount(4)
+            return statusbar
+
+        return None
+
+    def _setup_statusbar(self) -> None:
+        if not self._statusbar:
+            return
+
+        message = " Ожидание начала игры... "
+        progress = f" Прогресс 0/{self._sequence_length} "
+        accuracy = " Точность 0.0% (0/0) "
+        taken_time = " Время 00:00 "
+
+        self._statusbar.SetStatusText(message, 0)
+        self._statusbar.SetStatusText(progress, 1)
+        self._statusbar.SetStatusText(accuracy, 2)
+        self._statusbar.SetStatusText(taken_time, 3)
+
+        self._autofit_statusbar([progress, accuracy, message])
+
+    def _autofit_statusbar(self, texts: list[str]) -> None:
+        if not self._statusbar:
+            return
+
+        dc = wx.ClientDC(self._statusbar)
+        width_1 = dc.GetTextExtent(texts[0]).width
+        width_2 = dc.GetTextExtent(texts[1]).width
+        width_3 = dc.GetTextExtent(texts[2]).width
+        self._statusbar.SetStatusWidths([-1, width_1, width_2, width_3])
+
+    def _fit_parent_frame(self) -> None:
+        top_frame = self.GetTopLevelParent()
+
+        if isinstance(top_frame, wx.Frame):
+            self.Layout()
+            best_size = self.GetBestSize()
+            min_size = top_frame.ClientToWindowSize(best_size)
+            top_frame.SetMinSize(min_size)
+            top_frame.Fit()
+
+    def _on_left_click(self, event: wx.CommandEvent) -> None:
+        self._handle_arrow_input(ArrowDirection.LEFT)
+
+    def _on_right_click(self, event: wx.CommandEvent) -> None:
+        self._handle_arrow_input(ArrowDirection.RIGHT)
+
+    def _handle_arrow_input(self, direction: ArrowDirection) -> None:
+        self._input.player_move(direction)
+
+    def _on_session_started(self, step: StepData) -> None:
+        self.update_setter_card(
+            step.index,
+            step.setter.state,
+            step.setter.direction,
+        )
+
+        self.update_guesser_card(
+            step.index,
+            step.guesser.state,
+            step.guesser.direction,
+        )
+
+    def _on_setter_moved(self, step: StepData) -> None:
+        self.update_setter_card(
+            step.index,
+            step.setter.state,
+            step.setter.direction,
+        )
+
+        self.update_guesser_card(
+            step.index,
+            step.guesser.state,
+            step.guesser.direction,
+        )
+
+    def _on_guesser_moved(self, step: StepData):
+        self.update_setter_card(
+            step.index,
+            step.setter.state,
+            step.setter.direction,
+        )
+
+        self.update_guesser_card(
+            step.index,
+            step.guesser.state,
+            step.guesser.direction,
+        )
+
+    def _on_step_closed(self, step: StepData):
+        self.update_setter_card(
+            step.index,
+            step.setter.state,
+            step.setter.direction,
+        )
+
+        self.update_guesser_card(
+            step.index,
+            step.guesser.state,
+            step.guesser.direction,
+        )
+
+    def _on_session_finished(self):
+        pass
+
+    def update_setter_card(
+        self,
+        index: int,
+        state: CardState,
+        direction: Optional[ArrowDirection] = None,
+    ) -> None:
+        self._setter_sequence[index].set(state, direction)
+
+    def update_guesser_card(
+        self,
+        index: int,
+        state: CardState,
+        direction: Optional[ArrowDirection] = None,
+    ) -> None:
+        self._guesser_sequence[index].set(state, direction)
+
+    def update_statusbar(
+        self,
+        message: Optional[str],
+        stats: SessionStats,
+    ):
+        if not self._statusbar:
+            return
+
+        if message is not None:
+            self._statusbar.SetStatusText(message, 0)
+
+        progress = f" Прогресс {stats.setted}/{stats.total} "
+        self._statusbar.SetStatusText(progress, 1)
+
+        accuracy = (
+            f" Точность {stats.accuracy}% ({stats.correct}/{stats.wrong}) "
+        )
+        self._statusbar.SetStatusText(accuracy, 2)
+
+        minutes = int(stats.taken_time) // 60
+        seconds = int(stats.taken_time) % 60
+        taken_time = f" Время {minutes:02d}:{seconds:02d} "
+        self._statusbar.SetStatusText(taken_time, 3)
+
+        self._autofit_statusbar([progress, accuracy, taken_time])