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555
connect4-ui/app/play/page.tsx
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555
connect4-ui/app/play/page.tsx
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"use client";
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import { useCallback, useEffect, useRef, useState } from "react";
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import Board from "@/components/Board";
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import {
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BoardState,
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ParsedMessage,
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cmd,
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createEmptyBoard,
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parseMessage,
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placeToken,
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} from "@/lib/protocol";
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type ConnStatus = "idle" | "connecting" | "connected" | "disconnected";
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type GamePhase =
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| "idle" // not connected or connected but no game
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| "connected" // connected, awaiting ready
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| "ready" // sent READY, waiting for match
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| "playing" // in a match
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| "game-over"; // match finished
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type GameResult = "win" | "loss" | "draw" | "terminated";
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const DEFAULT_URL = "wss://connect4.abunchofknowitalls.com";
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export default function PlayPage() {
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const [wsUrl, setWsUrl] = useState(DEFAULT_URL);
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const [username, setUsername] = useState("");
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const [connStatus, setConnStatus] = useState<ConnStatus>("idle");
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const [gamePhase, setGamePhase] = useState<GamePhase>("idle");
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const [myColor, setMyColor] = useState<1 | 2 | null>(null); // 1=red, 2=yellow
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const [isMyTurn, setIsMyTurn] = useState(false);
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const [board, setBoard] = useState<BoardState>(createEmptyBoard());
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const [lastMove, setLastMove] = useState<{ column: number; row: number } | null>(null);
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const [gameResult, setGameResult] = useState<GameResult | null>(null);
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const [moveCount, setMoveCount] = useState(0);
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const [statusMessages, setStatusMessages] = useState<string[]>([]);
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const [tournamentMode, setTournamentMode] = useState(false);
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const [waitingForNextRound, setWaitingForNextRound] = useState(false);
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const wsRef = useRef<WebSocket | null>(null);
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const myColorRef = useRef<1 | 2 | null>(null);
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const isMyTurnRef = useRef(false);
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const addStatus = (msg: string) =>
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setStatusMessages((prev) => [
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`[${new Date().toLocaleTimeString()}] ${msg}`,
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...prev.slice(0, 29),
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]);
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const send = useCallback((msg: string) => {
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if (wsRef.current?.readyState === WebSocket.OPEN) wsRef.current.send(msg);
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}, []);
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const resetGame = useCallback(() => {
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setBoard(createEmptyBoard());
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setLastMove(null);
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setMoveCount(0);
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setMyColor(null);
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myColorRef.current = null;
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setIsMyTurn(false);
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isMyTurnRef.current = false;
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setGameResult(null);
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}, []);
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const handleColumnClick = useCallback(
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(col: number) => {
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if (!isMyTurnRef.current || gamePhase !== "playing") return;
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// Optimistically place the piece; server validates and replies
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const color = myColorRef.current!;
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setBoard((prev) => {
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const { board: next, row } = placeToken(prev, color, col);
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if (row === -1) return prev; // column full, ignore
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setLastMove({ column: col, row });
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return next;
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});
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setIsMyTurn(false);
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isMyTurnRef.current = false;
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setMoveCount((n) => n + 1);
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send(cmd.play(col));
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addStatus(`You played column ${col}`);
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},
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[gamePhase, send]
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);
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const handleMessage = useCallback(
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(raw: string) => {
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const msg: ParsedMessage = parseMessage(raw);
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switch (msg.type) {
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case "CONNECT_ACK":
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setConnStatus("connected");
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setGamePhase("connected");
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addStatus(`✅ Connected as "${username}"`);
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break;
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case "ERROR":
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addStatus(`⚠ ${msg.message}`);
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break;
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case "READY_ACK":
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setGamePhase("ready");
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addStatus("⏳ Waiting for an opponent…");
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break;
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case "GAME_START": {
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resetGame();
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const color: 1 | 2 = msg.goesFirst ? 1 : 2;
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setMyColor(color);
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myColorRef.current = color;
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setGamePhase("playing");
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setWaitingForNextRound(false);
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const firstTurn = msg.goesFirst;
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setIsMyTurn(firstTurn);
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isMyTurnRef.current = firstTurn;
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addStatus(
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msg.goesFirst
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? "🔴 You are Red — you go FIRST!"
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: "🟡 You are Yellow — wait for opponent's first move"
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);
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break;
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}
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case "OPPONENT_MOVE": {
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const opponentColor: 1 | 2 = myColorRef.current === 1 ? 2 : 1;
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setBoard((prev) => {
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const { board: next, row } = placeToken(prev, opponentColor, msg.column);
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setLastMove({ column: msg.column, row });
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return next;
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});
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setMoveCount((n) => n + 1);
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setIsMyTurn(true);
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isMyTurnRef.current = true;
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addStatus(`Opponent played column ${msg.column} — your turn!`);
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break;
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}
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case "GAME_WINS":
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setGameResult("win");
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setGamePhase("game-over");
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setIsMyTurn(false);
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isMyTurnRef.current = false;
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addStatus("🏆 You won!");
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break;
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case "GAME_LOSS":
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setGameResult("loss");
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setGamePhase("game-over");
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setIsMyTurn(false);
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isMyTurnRef.current = false;
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addStatus("💔 You lost");
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break;
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case "GAME_DRAW":
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setGameResult("draw");
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setGamePhase("game-over");
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setIsMyTurn(false);
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isMyTurnRef.current = false;
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addStatus("🤝 Draw!");
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break;
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case "GAME_TERMINATED":
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setGameResult("terminated");
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setGamePhase("game-over");
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setIsMyTurn(false);
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isMyTurnRef.current = false;
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addStatus("⛔ Match terminated");
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break;
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case "TOURNAMENT_START":
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setTournamentMode(true);
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addStatus(`🏆 Tournament started: ${msg.tournamentType}`);
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break;
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case "TOURNAMENT_END":
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addStatus("Round over — sending Ready for next round…");
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setWaitingForNextRound(false);
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setGamePhase("connected");
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resetGame();
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// Auto-ready for next round (mirror the gameloop.py behavior)
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setTimeout(() => send(cmd.ready()), 500);
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setGamePhase("ready");
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addStatus("⏳ Ready for next round…");
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break;
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case "TOURNAMENT_CANCEL":
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setTournamentMode(false);
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setWaitingForNextRound(false);
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setGamePhase("connected");
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resetGame();
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addStatus("Tournament cancelled");
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break;
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default:
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break;
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}
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},
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[username, resetGame, send]
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);
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const connect = useCallback(() => {
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if (!username.trim()) {
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addStatus("⚠ Please enter a username first");
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return;
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}
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if (wsRef.current) wsRef.current.close();
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setConnStatus("connecting");
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setGamePhase("idle");
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resetGame();
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setStatusMessages([]);
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setTournamentMode(false);
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setWaitingForNextRound(false);
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const ws = new WebSocket(wsUrl);
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wsRef.current = ws;
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ws.onopen = () => ws.send(cmd.connect(username.trim()));
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ws.onmessage = (e) => handleMessage(e.data as string);
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ws.onclose = () => {
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setConnStatus("disconnected");
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setGamePhase("idle");
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addStatus("Disconnected from server");
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};
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ws.onerror = () => addStatus("WebSocket error");
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}, [username, wsUrl, handleMessage, resetGame]);
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const disconnect = useCallback(() => {
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send(cmd.disconnect());
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setTimeout(() => wsRef.current?.close(), 200);
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}, [send]);
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const sendReady = useCallback(() => {
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send(cmd.ready());
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setGamePhase("ready");
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addStatus("⏳ Waiting for an opponent…");
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}, [send]);
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useEffect(() => () => wsRef.current?.close(), []);
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// Derived display values
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const myColorLabel = myColor === 1 ? "🔴 Red" : myColor === 2 ? "🟡 Yellow" : null;
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const opponentColor: 1 | 2 | null = myColor === 1 ? 2 : myColor === 2 ? 1 : null;
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return (
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<div className="flex flex-col gap-6">
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{/* Header */}
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<div className="flex items-center justify-between">
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<div>
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<h1 className="text-2xl font-bold text-white">🎮 Play Connect4</h1>
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<p className="text-gray-400 text-sm mt-1">
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Connect as a player and compete in matches
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</p>
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</div>
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<PhaseIndicator phase={gamePhase} isMyTurn={isMyTurn} />
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</div>
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<div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
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{/* Left: controls + status */}
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<div className="flex flex-col gap-4">
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{/* Connection card */}
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<div className="bg-gray-900 border border-gray-700 rounded-xl p-4 flex flex-col gap-3">
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<h2 className="text-sm font-semibold text-gray-300 uppercase tracking-wider">
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Connection
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</h2>
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<div>
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<label className="text-xs text-gray-400 mb-1 block">Server URL</label>
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<input
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className="w-full bg-gray-800 border border-gray-600 rounded-lg px-3 py-2 text-sm text-white focus:border-blue-500 focus:outline-none"
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value={wsUrl}
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onChange={(e) => setWsUrl(e.target.value)}
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placeholder="wss://..."
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disabled={connStatus === "connected" || connStatus === "connecting"}
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/>
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</div>
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<div>
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<label className="text-xs text-gray-400 mb-1 block">Username</label>
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<input
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className="w-full bg-gray-800 border border-gray-600 rounded-lg px-3 py-2 text-sm text-white focus:border-blue-500 focus:outline-none"
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value={username}
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onChange={(e) => setUsername(e.target.value)}
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placeholder="Enter your username"
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disabled={connStatus === "connected" || connStatus === "connecting"}
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onKeyDown={(e) => e.key === "Enter" && connStatus === "idle" && connect()}
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/>
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</div>
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{connStatus !== "connected" ? (
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<button
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onClick={connect}
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disabled={connStatus === "connecting" || !username.trim()}
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className="w-full py-2 bg-blue-600 hover:bg-blue-500 disabled:bg-gray-700 disabled:text-gray-500 text-white text-sm font-medium rounded-lg transition-colors"
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>
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{connStatus === "connecting" ? "Connecting…" : "Connect"}
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</button>
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) : (
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<button
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onClick={disconnect}
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className="w-full py-2 bg-gray-700 hover:bg-gray-600 text-white text-sm font-medium rounded-lg transition-colors"
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>
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Disconnect
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</button>
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)}
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</div>
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{/* Game controls */}
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{connStatus === "connected" && (
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<div className="bg-gray-900 border border-gray-700 rounded-xl p-4 flex flex-col gap-3">
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<h2 className="text-sm font-semibold text-gray-300 uppercase tracking-wider">
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Match
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</h2>
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{tournamentMode && (
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<div className="flex items-center gap-2 px-3 py-2 rounded-lg bg-purple-950/50 border border-purple-700 text-purple-300 text-sm">
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<span>🏆</span>
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<span>Tournament mode active</span>
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</div>
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)}
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{gamePhase === "connected" && !tournamentMode && (
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<button
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onClick={sendReady}
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className="w-full py-2.5 bg-green-700 hover:bg-green-600 text-white text-sm font-semibold rounded-lg transition-colors"
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>
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✋ Ready to Play
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</button>
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)}
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{gamePhase === "ready" && (
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<div className="text-center py-3 text-yellow-300 text-sm animate-pulse">
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⏳ Waiting for opponent…
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</div>
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)}
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{(gamePhase === "playing" || gamePhase === "game-over") && myColor && (
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<div className="flex flex-col gap-2">
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<div className="flex items-center gap-3 px-3 py-2 rounded-lg bg-gray-800">
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<div
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className={`w-4 h-4 rounded-full ${
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myColor === 1 ? "bg-red-500" : "bg-yellow-400"
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}`}
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/>
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<span className="text-white font-medium text-sm">
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You are {myColorLabel}
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</span>
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{myColor === 1 && (
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<span className="text-xs text-gray-500">(1st)</span>
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)}
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</div>
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{gamePhase === "playing" && (
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<div
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className={`flex items-center justify-center gap-2 px-3 py-2 rounded-lg font-semibold text-sm ${
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isMyTurn
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? "bg-green-900/50 border border-green-600 text-green-300 animate-pulse"
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: "bg-gray-800 text-gray-400"
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}`}
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>
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{isMyTurn ? "⬆ Your turn — click a column!" : "⏳ Waiting for opponent…"}
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</div>
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)}
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<div className="text-xs text-gray-500 text-center">
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{moveCount} move{moveCount !== 1 ? "s" : ""} played
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</div>
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</div>
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)}
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{gamePhase === "game-over" && gameResult && (
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<div className="flex flex-col gap-2">
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<div
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className={`text-center py-3 rounded-lg font-bold text-base border ${
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gameResult === "win"
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? "bg-green-900/50 border-green-600 text-green-300"
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: gameResult === "loss"
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? "bg-red-900/50 border-red-600 text-red-300"
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: gameResult === "draw"
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? "bg-blue-900/50 border-blue-600 text-blue-300"
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: "bg-gray-800 border-gray-600 text-gray-300"
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}`}
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>
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{gameResult === "win"
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? "🏆 You Won!"
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: gameResult === "loss"
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? "💔 You Lost"
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: gameResult === "draw"
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? "🤝 Draw"
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: "⛔ Terminated"}
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</div>
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{!tournamentMode && (
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<button
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onClick={sendReady}
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className="w-full py-2 bg-green-700 hover:bg-green-600 text-white text-sm font-semibold rounded-lg transition-colors"
|
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>
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Play Again
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</button>
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)}
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</div>
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||||
)}
|
||||
</div>
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||||
)}
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|
||||
{/* Status log */}
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<div className="bg-gray-900 border border-gray-700 rounded-xl p-4">
|
||||
<h2 className="text-sm font-semibold text-gray-300 uppercase tracking-wider mb-2">
|
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Status Log
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</h2>
|
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<div className="flex flex-col gap-0.5 max-h-52 overflow-y-auto">
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{statusMessages.length === 0 ? (
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<p className="text-gray-600 text-xs">Connect to start</p>
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||||
) : (
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||||
statusMessages.map((m, i) => (
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<p key={i} className="text-xs text-gray-400 font-mono">
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{m}
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||||
</p>
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||||
))
|
||||
)}
|
||||
</div>
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||||
</div>
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||||
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||||
{/* How to play */}
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||||
<div className="bg-gray-900 border border-gray-700 rounded-xl p-4">
|
||||
<h2 className="text-sm font-semibold text-gray-300 uppercase tracking-wider mb-2">
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How to Play
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</h2>
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<ol className="flex flex-col gap-1.5 text-xs text-gray-400">
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<li className="flex gap-2">
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<span className="text-blue-400 font-bold shrink-0">1.</span>
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Enter the server URL and your username, then click <strong className="text-gray-300">Connect</strong>
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||||
</li>
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||||
<li className="flex gap-2">
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||||
<span className="text-blue-400 font-bold shrink-0">2.</span>
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Click <strong className="text-gray-300">Ready to Play</strong> to queue for a match
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||||
</li>
|
||||
<li className="flex gap-2">
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||||
<span className="text-blue-400 font-bold shrink-0">3.</span>
|
||||
When the game starts, click a column number to drop your piece
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||||
</li>
|
||||
<li className="flex gap-2">
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||||
<span className="text-blue-400 font-bold shrink-0">4.</span>
|
||||
Connect 4 in a row (horizontal, vertical, or diagonal) to win!
|
||||
</li>
|
||||
</ol>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
{/* Right: board */}
|
||||
<div className="lg:col-span-2 bg-gray-900 border border-gray-700 rounded-xl p-6 flex flex-col items-center justify-center gap-4 min-h-96">
|
||||
{connStatus !== "connected" || gamePhase === "idle" ? (
|
||||
<div className="flex flex-col items-center gap-4 text-center py-8">
|
||||
<span className="text-6xl">🎮</span>
|
||||
<p className="text-gray-400 text-lg font-medium">Ready to play?</p>
|
||||
<p className="text-gray-600 text-sm max-w-xs">
|
||||
Enter your username and connect to the server to start a match
|
||||
</p>
|
||||
</div>
|
||||
) : gamePhase === "ready" ? (
|
||||
<div className="flex flex-col items-center gap-4 text-center py-8">
|
||||
<div className="text-5xl animate-bounce">⏳</div>
|
||||
<p className="text-yellow-300 text-lg font-medium">
|
||||
Waiting for an opponent…
|
||||
</p>
|
||||
<p className="text-gray-500 text-sm">
|
||||
The game will start automatically when a match is found
|
||||
</p>
|
||||
</div>
|
||||
) : (
|
||||
<>
|
||||
{gameResult && (
|
||||
<div
|
||||
className={`w-full max-w-md rounded-xl p-4 text-center font-bold text-xl border ${
|
||||
gameResult === "win"
|
||||
? "bg-green-900/50 border-green-500 text-green-300"
|
||||
: gameResult === "loss"
|
||||
? "bg-red-900/50 border-red-500 text-red-300"
|
||||
: gameResult === "draw"
|
||||
? "bg-blue-900/50 border-blue-500 text-blue-300"
|
||||
: "bg-gray-800 border-gray-600 text-gray-300"
|
||||
}`}
|
||||
>
|
||||
{gameResult === "win"
|
||||
? "🏆 You Won!"
|
||||
: gameResult === "loss"
|
||||
? "💔 You Lost"
|
||||
: gameResult === "draw"
|
||||
? "🤝 Draw!"
|
||||
: "⛔ Match Terminated"}
|
||||
</div>
|
||||
)}
|
||||
|
||||
<Board
|
||||
board={board}
|
||||
lastMove={lastMove}
|
||||
player1={username}
|
||||
player2="Opponent"
|
||||
currentTurnColor={
|
||||
gamePhase === "playing" && myColor
|
||||
? isMyTurn
|
||||
? myColor
|
||||
: opponentColor
|
||||
: null
|
||||
}
|
||||
onColumnClick={
|
||||
gamePhase === "playing" && isMyTurn ? handleColumnClick : undefined
|
||||
}
|
||||
disabled={gamePhase !== "playing" || !isMyTurn}
|
||||
/>
|
||||
|
||||
{gamePhase === "playing" && (
|
||||
<p className="text-sm text-gray-400">
|
||||
{isMyTurn ? (
|
||||
<span className="text-green-400 font-semibold animate-pulse">
|
||||
⬆ Click a column to drop your piece
|
||||
</span>
|
||||
) : (
|
||||
<span className="text-gray-500">Waiting for opponent…</span>
|
||||
)}
|
||||
</p>
|
||||
)}
|
||||
</>
|
||||
)}
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
||||
function PhaseIndicator({
|
||||
phase,
|
||||
isMyTurn,
|
||||
}: {
|
||||
phase: GamePhase;
|
||||
isMyTurn: boolean;
|
||||
}) {
|
||||
if (phase === "playing" && isMyTurn) {
|
||||
return (
|
||||
<span className="px-3 py-1.5 rounded-full text-sm font-medium bg-green-900/60 text-green-300 animate-pulse">
|
||||
Your Turn!
|
||||
</span>
|
||||
);
|
||||
}
|
||||
const config: Record<GamePhase, { label: string; cls: string }> = {
|
||||
idle: { label: "Not connected", cls: "bg-gray-700 text-gray-400" },
|
||||
connected: { label: "Connected", cls: "bg-blue-900/60 text-blue-300" },
|
||||
ready: { label: "Waiting…", cls: "bg-yellow-900/60 text-yellow-300 animate-pulse" },
|
||||
playing: { label: "In Game", cls: "bg-green-900/60 text-green-400" },
|
||||
"game-over": { label: "Game Over", cls: "bg-gray-700 text-gray-400" },
|
||||
};
|
||||
const { label, cls } = config[phase];
|
||||
return (
|
||||
<span className={`px-3 py-1.5 rounded-full text-sm font-medium ${cls}`}>{label}</span>
|
||||
);
|
||||
}
|
||||
Reference in New Issue
Block a user