4 files changed, 113 insertions, 9 deletions
diff --git a/src/components/App.tsx b/src/components/App.tsx
index 6a9c60e..1f646b3 100644
--- a/src/components/App.tsx
+++ b/src/components/App.tsx
@@ -9,8 +9,7 @@
  * 
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  * 
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
@@ -20,20 +19,51 @@ import React, { useState } from 'react';
 import MessageBox from './MessageBox';
 import ScoreBoard from './ScoreBoard';
 import Grid from './Grid';
+import MultiplayerGrid from './MultiplayerGrid';
 import Footer from './Footer';
 import './style.css';
 
 const App: React.FC = () => {
   const [scoreX, setScoreX] = useState<number>(0);
   const [scoreO, setScoreO] = useState<number>(0);
-  const [turn, setTurn] = useState<number>(0);
+  const [turn, setTurn] = useState<number>(1);
   const [showMessageBox, setShowMessageBox] = useState<boolean>(false);
   const [message, setMessage] = useState<string>("");
+  const mp: boolean = true;
   return (
     <>
-      {showMessageBox && <MessageBox message={message} setShowMessage={setShowMessageBox}/>}
-      <ScoreBoard turn={turn} scoreX={scoreX} scoreO={scoreO}/>
-      <Grid turn={turn} setTurn={setTurn} scoreX={scoreX} setScoreX={setScoreX} scoreO={scoreO} setScoreO={setScoreO} setMessage={setMessage} setShowMessage={setShowMessageBox}/>
+      {showMessageBox && 
+        <MessageBox 
+          message={message} 
+          setShowMessage={setShowMessageBox}
+        />
+      }
+
+      <ScoreBoard 
+        turn={turn} 
+        scoreX={scoreX} 
+        scoreO={scoreO}
+      />
+
+      {mp ? <MultiplayerGrid 
+          turn={turn} 
+          setTurn={setTurn} 
+          scoreX={scoreX} 
+          setScoreX={setScoreX} 
+          scoreO={scoreO} setScoreO={setScoreO} 
+          setMessage={setMessage} 
+          setShowMessage={setShowMessageBox}
+        /> : <MultiplayerGrid 
+          turn={turn} 
+          setTurn={setTurn} 
+          scoreX={scoreX} 
+          setScoreX={setScoreX} 
+          scoreO={scoreO} setScoreO={setScoreO} 
+          setMessage={setMessage} 
+          setShowMessage={setShowMessageBox}
+        />
+      }
+
       <Footer/>
     </>
   );
diff --git a/src/components/Grid.tsx b/src/components/Grid.tsx
index 30bab11..f12766f 100644
--- a/src/components/Grid.tsx
+++ b/src/components/Grid.tsx
@@ -80,7 +80,7 @@ const Grid: React.FC<Props> = (props) => {
   });
 
   return (
-      <div className="Grid">
+    <div className="Grid">
       {
         board.map(
           (i, index) => 
diff --git a/src/components/MultiplayerGrid.tsx b/src/components/MultiplayerGrid.tsx
new file mode 100644
index 0000000..3d698e6
--- /dev/null
+++ b/src/components/MultiplayerGrid.tsx
@@ -0,0 +1,66 @@
+/*
+ * Tic Tac Toe - Minimalistic Tic Tac Toe
+ * Copyright (C) 2021  Vidhu Kant Sharma
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import React, { useState, useEffect, Dispatch, SetStateAction } from 'react';
+import { io } from 'socket.io-client';
+import Box from './Box';
+import './style.css';
+
+interface Props {
+  turn: number
+  setTurn: Dispatch<SetStateAction<number>>
+  scoreX: number
+  scoreO: number
+  setScoreX: Dispatch<SetStateAction<number>>
+  setScoreO: Dispatch<SetStateAction<number>>
+  setMessage: Dispatch<SetStateAction<string>>
+  setShowMessage: Dispatch<SetStateAction<boolean>>
+}
+
+const socket = io("http://localhost:5000");
+
+const MultiplayerGrid: React.FC<Props> = (props) => {
+  // 0 is O, 1 is X, 2 is blank
+  const [board, setBoard] = useState<number[]>([2,2,2,2,2,2,2,2,2]);
+  const turn = props.turn;
+
+  const getBoard = (index: number) => {
+    const newBoard: number[] = board.slice(0, index).concat(turn).concat(board.slice(index+1, 9));
+    socket.emit("update-remote-board", newBoard);
+    props.setTurn(turn === 1 ? 0 : 1);
+  }
+
+  useState(() => {
+    socket.on("update-client-board", (remoteBoard) => {
+      setBoard(remoteBoard);
+    });
+  });
+
+  return (
+    <div className="Grid">
+      {
+        board.map(
+          (i, index) => 
+            <Box key={index} index={index} sign={i} setSign={getBoard}/>
+        )
+      }
+    </div>
+  );
+}
+
+export default MultiplayerGrid;
diff --git a/src/server/index.js b/src/server/index.js
index 2b85ea5..f8b5ca7 100644
--- a/src/server/index.js
+++ b/src/server/index.js
@@ -1,11 +1,19 @@
 const express = require('express');
-const path = require('path');
 const app = express();
+const http = require('http').Server(app);
+const path = require('path');
+const io = require('socket.io')(http);
 
 app.use(express.static(path.join(__dirname, '../../build')));
 
+io.on('connection', (socket) => {
+  socket.on('update-remote-board', (board) => {
+    io.emit('update-client-board', board)
+  })
+});
+
 // Start the server
 const PORT = process.env.PORT || 5000;
-app.listen(PORT, () => {
+http.listen(PORT, () => {
     console.log(`App listening on port ${PORT}`);
 });