Multiplayer mode: server, room tokens, docker setup, and client UI
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robi committed
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@@ -0,0 +1,85 @@
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'use strict';
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const fs = require('fs');
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const path = require('path');
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const initSqlJs = require('sql.js');
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const DATA_DIR = path.join(__dirname, 'data');
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const DB_PATH = path.join(DATA_DIR, 'games.db');
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let db = null;
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async function init() {
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if (!fs.existsSync(DATA_DIR)) {
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fs.mkdirSync(DATA_DIR, { recursive: true });
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}
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const SQL = await initSqlJs();
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if (fs.existsSync(DB_PATH)) {
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const buf = fs.readFileSync(DB_PATH);
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db = new SQL.Database(buf);
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} else {
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db = new SQL.Database();
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db.run(`CREATE TABLE IF NOT EXISTS games (
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id TEXT PRIMARY KEY,
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token TEXT UNIQUE NOT NULL,
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status TEXT NOT NULL DEFAULT 'waiting',
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board TEXT NOT NULL DEFAULT 'null',
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turn TEXT NOT NULL DEFAULT 'X',
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created_at TEXT NOT NULL,
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updated_at TEXT NOT NULL
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)`);
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persist();
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}
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}
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function createGame({ id, token }) {
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const now = new Date().toISOString();
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db.run(
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`INSERT INTO games (id, token, status, board, turn, created_at, updated_at)
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VALUES (?, ?, 'waiting', 'null', 'X', ?, ?)`,
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[id, token, now, now]
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);
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persist();
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}
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function getGameByToken(token) {
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const stmt = db.prepare(`SELECT * FROM games WHERE token = ?`);
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stmt.bind([token]);
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if (stmt.step()) {
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const row = stmt.getAsObject();
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stmt.free();
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return row;
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}
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stmt.free();
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return null;
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}
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function getGameById(id) {
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const stmt = db.prepare(`SELECT * FROM games WHERE id = ?`);
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stmt.bind([id]);
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if (stmt.step()) {
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const row = stmt.getAsObject();
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stmt.free();
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return row;
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}
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stmt.free();
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return null;
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}
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function updateGame(id, { status, board, turn }) {
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const now = new Date().toISOString();
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db.run(
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`UPDATE games SET status = ?, board = ?, turn = ?, updated_at = ? WHERE id = ?`,
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[status, board, turn, now, id]
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);
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persist();
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}
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function persist() {
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const data = db.export();
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fs.writeFileSync(DB_PATH, Buffer.from(data));
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}
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module.exports = { init, createGame, getGameByToken, getGameById, updateGame, persist };
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@@ -0,0 +1,11 @@
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{
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"name": "ttt-server",
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"private": true,
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"type": "commonjs",
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"scripts": { "start": "node server.js" },
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"dependencies": {
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"express": "^5.2.1",
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"ws": "^8.21.3",
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"sql.js": "^1.14.2"
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}
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}
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Generated
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'use strict';
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const crypto = require('crypto');
|
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const games = new Map();
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app.post('/api/games', (req, res) => {
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const id = crypto.randomUUID();
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db.createGame({ id, token });
|
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res.sendFile(path.join(__dirname, '../public', 'index.html'));
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} else {
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next();
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}
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});
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function send(ws, obj) {
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if (ws.readyState === WebSocket.OPEN) {
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ws.send(JSON.stringify(obj));
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}
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}
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function broadcast(game, obj) {
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for (const seat of ['X', 'O']) {
|
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const p = game.players[seat];
|
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if (p) send(p, obj);
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}
|
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}
|
||||
|
||||
wss.on('connection', (ws) => {
|
||||
ws.on('message', (raw) => {
|
||||
let msg;
|
||||
try {
|
||||
msg = JSON.parse(raw.toString());
|
||||
} catch (e) {
|
||||
return;
|
||||
}
|
||||
|
||||
switch (msg.type) {
|
||||
case 'host':
|
||||
handleHost(ws, msg);
|
||||
break;
|
||||
case 'join':
|
||||
handleJoin(ws, msg);
|
||||
break;
|
||||
case 'move':
|
||||
handleMove(ws, msg);
|
||||
break;
|
||||
case 'new-round':
|
||||
handleNewRound(ws, msg);
|
||||
break;
|
||||
case 'leave':
|
||||
handleLeave(ws);
|
||||
break;
|
||||
}
|
||||
});
|
||||
|
||||
ws.on('close', () => {
|
||||
handleDisconnect(ws);
|
||||
});
|
||||
});
|
||||
|
||||
function handleHost(ws, msg) {
|
||||
const row = db.getGameById(msg.id);
|
||||
if (!row) {
|
||||
send(ws, { type: 'error', message: 'Game not found' });
|
||||
return;
|
||||
}
|
||||
|
||||
let game = games.get(row.id);
|
||||
if (!game) {
|
||||
const board = row.board === 'null' ? Array(9).fill(null) : JSON.parse(row.board);
|
||||
game = {
|
||||
id: row.id,
|
||||
token: row.token,
|
||||
board,
|
||||
turn: row.turn,
|
||||
status: row.status,
|
||||
players: { X: null, O: null },
|
||||
};
|
||||
games.set(game.id, game);
|
||||
}
|
||||
|
||||
game.players.X = ws;
|
||||
ws._gameId = game.id;
|
||||
ws._seat = 'X';
|
||||
|
||||
if (game.status === 'waiting') {
|
||||
send(ws, { type: 'joined', mark: 'X', board: game.board, turn: game.turn });
|
||||
} else if (game.status === 'playing' && game.players.O) {
|
||||
send(ws, { type: 'start', mark: 'X', first: 'X', board: game.board, turn: game.turn });
|
||||
}
|
||||
}
|
||||
|
||||
function handleJoin(ws, msg) {
|
||||
const row = db.getGameByToken(msg.token);
|
||||
if (!row) {
|
||||
send(ws, { type: 'error', message: 'Invalid or expired link' });
|
||||
return;
|
||||
}
|
||||
|
||||
let game = games.get(row.id);
|
||||
|
||||
if (!game) {
|
||||
const board = row.board === 'null' ? Array(9).fill(null) : JSON.parse(row.board);
|
||||
game = {
|
||||
id: row.id,
|
||||
token: row.token,
|
||||
board,
|
||||
turn: row.turn,
|
||||
status: row.status,
|
||||
players: { X: null, O: ws },
|
||||
};
|
||||
games.set(game.id, game);
|
||||
}
|
||||
|
||||
if (game.status === 'ended') {
|
||||
send(ws, { type: 'error', message: 'Game already ended' });
|
||||
return;
|
||||
}
|
||||
|
||||
if (game.players.O) {
|
||||
send(ws, { type: 'error', message: 'Game already full' });
|
||||
return;
|
||||
}
|
||||
|
||||
game.players.O = ws;
|
||||
ws._gameId = game.id;
|
||||
ws._seat = 'O';
|
||||
|
||||
if (game.players.X) {
|
||||
game.status = 'playing';
|
||||
db.updateGame(game.id, { status: 'playing', board: JSON.stringify(game.board), turn: game.turn });
|
||||
send(game.players.X, { type: 'opponent-joined', you: 'X' });
|
||||
send(ws, { type: 'start', mark: 'O', first: 'X', board: game.board, turn: game.turn });
|
||||
} else {
|
||||
send(ws, { type: 'joined', mark: 'O', board: game.board, turn: game.turn });
|
||||
}
|
||||
}
|
||||
|
||||
function handleMove(ws, msg) {
|
||||
const game = games.get(ws._gameId);
|
||||
if (!game) {
|
||||
send(ws, { type: 'error', message: 'Game not found' });
|
||||
return;
|
||||
}
|
||||
|
||||
if (game.status !== 'playing') {
|
||||
send(ws, { type: 'error', message: 'Game is not in progress' });
|
||||
return;
|
||||
}
|
||||
|
||||
const seat = ws._seat;
|
||||
if (game.turn !== seat) {
|
||||
send(ws, { type: 'error', message: 'Not your turn' });
|
||||
return;
|
||||
}
|
||||
|
||||
const cell = msg.index;
|
||||
if (!Number.isInteger(cell) || cell < 0 || cell > 8) {
|
||||
send(ws, { type: 'error', message: 'Invalid cell' });
|
||||
return;
|
||||
}
|
||||
|
||||
if (game.board[cell] !== null) {
|
||||
send(ws, { type: 'error', message: 'Cell already occupied' });
|
||||
return;
|
||||
}
|
||||
|
||||
game.board[cell] = seat;
|
||||
game.turn = seat === 'X' ? 'O' : 'X';
|
||||
db.updateGame(game.id, { status: game.status, board: JSON.stringify(game.board), turn: game.turn });
|
||||
|
||||
const result = checkWinner(game.board);
|
||||
|
||||
broadcast(game, { type: 'move', index: cell, mark: seat });
|
||||
|
||||
if (result) {
|
||||
game.status = 'ended';
|
||||
db.updateGame(game.id, { status: 'ended', board: JSON.stringify(game.board), turn: game.turn });
|
||||
broadcast(game, { type: 'end', winner: result.winner, line: result.line || null });
|
||||
}
|
||||
}
|
||||
|
||||
function handleNewRound(ws, msg) {
|
||||
const game = games.get(ws._gameId);
|
||||
if (!game) {
|
||||
send(ws, { type: 'error', message: 'Game not found' });
|
||||
return;
|
||||
}
|
||||
|
||||
if (game.status !== 'ended') {
|
||||
send(ws, { type: 'error', message: 'Game has not ended' });
|
||||
return;
|
||||
}
|
||||
|
||||
game.board = Array(9).fill(null);
|
||||
game.turn = 'X';
|
||||
game.status = 'playing';
|
||||
db.updateGame(game.id, { status: 'playing', board: JSON.stringify(game.board), turn: game.turn });
|
||||
|
||||
broadcast(game, { type: 'new-round', first: 'X', board: game.board, turn: game.turn });
|
||||
}
|
||||
|
||||
function handleLeave(ws) {
|
||||
handleDisconnect(ws);
|
||||
}
|
||||
|
||||
function handleDisconnect(ws) {
|
||||
const gameId = ws._gameId;
|
||||
if (!gameId) return;
|
||||
|
||||
const game = games.get(gameId);
|
||||
if (!game) return;
|
||||
|
||||
const seat = ws._seat;
|
||||
if (game.players[seat] === ws) {
|
||||
game.players[seat] = null;
|
||||
}
|
||||
|
||||
if (game.status === 'playing') {
|
||||
game.status = 'ended';
|
||||
db.updateGame(game.id, { status: 'ended', board: JSON.stringify(game.board), turn: game.turn });
|
||||
|
||||
const otherSeat = seat === 'X' ? 'O' : 'X';
|
||||
const other = game.players[otherSeat];
|
||||
if (other) {
|
||||
send(other, { type: 'opponent-left' });
|
||||
}
|
||||
} else if (game.status === 'waiting' && seat === 'X') {
|
||||
game.status = 'ended';
|
||||
db.updateGame(game.id, { status: 'ended', board: JSON.stringify(game.board), turn: game.turn });
|
||||
}
|
||||
|
||||
if (!game.players.X && !game.players.O) {
|
||||
games.delete(game.id);
|
||||
}
|
||||
}
|
||||
|
||||
db.init().then(() => {
|
||||
server.listen(PORT, '0.0.0.0', () => {
|
||||
console.log(`Server running on port ${PORT}`);
|
||||
});
|
||||
}).catch((err) => {
|
||||
console.error('Failed to initialize database:', err);
|
||||
process.exit(1);
|
||||
});
|
||||
Reference in new issue
Block a user