First try make Multiplayer

helpFunctions.js

@@ -31,12 +31,19 @@ function sendRequest(url, json, callback) {
         });
 }
 
-/*function addMapToClient(clintList, client, mapId) {
-    const clientId = client.name;
-}*/
+function addMapToClient(clientList, currentClient, mapId, callback) {
+    clientList.forEach(client => {
+        if (client.name === currentClient.name) {
+            client.mapId = mapId;
+            console.log("Client Map ID found");
+        }
+    });
+    return callback(clientList);
+}
 
 module.exports = {
     isJsonString,
     checkIfRequestHasVote,
-    sendRequest
+    sendRequest,
+    addMapToClient
 };

socket.js

@@ -15,6 +15,7 @@ server.on('close',function(){
 server.on('connection',function(socket){
     // Identify this client
     socket.name = socket.remoteAddress + ":" + socket.remotePort;
+    socket.mapId = "null";
     clients.push(socket);
 
     // Send a nice welcome message and announce
@@ -68,10 +69,6 @@ server.on('connection',function(socket){
     });
 
     socket.on('data',function(data){
-        var bread = socket.bytesRead;
-        var bwrite = socket.bytesWritten;
-        console.log('Bytes read : ' + bread);
-        console.log('Bytes written : ' + bwrite);
         console.log('Data sent to server : ' + data);
 
         if(hf.isJsonString(data)) {
@@ -83,12 +80,17 @@ server.on('connection',function(socket){
             }
             hf.sendRequest(url, data, res => {
                 if (res) {
-                    var is_kernel_buffer_full = socket.write(JSON.stringify(res.data) + '\n');
+                    const req = JSON.parse(data);
+                    hf.addMapToClient(clients, socket, req['mapId'], newClientList => {
+                        clients = newClientList.slice();
+                        sendToAllClientsAtSameMap(res, req['mapId']);
+                    });
+                    /*var is_kernel_buffer_full = socket.write(JSON.stringify(res.data) + '\n');
                     if(is_kernel_buffer_full){
                         console.log('Data was flushed successfully from kernel buffer i.e written successfully!');
                     } else {
                         socket.pause();
-                    }
+                    }*/
                 } else {
                     console.log("Res was null");
                 }
@@ -144,6 +146,16 @@ server.on('connection',function(socket){
         process.stdout.write(message)
     }
 
+    // Send a message to all clients playing the same map
+    function sendToAllClientsAtSameMap(res, mapId) {
+        console.log("JSON: ", JSON.stringify(res.data));
+        clients.forEach(function (client) {
+            // Don't want to send it to sender
+            if (client.mapId === mapId) client.write(JSON.stringify(res.data) + '\n');
+        });
+        console.log("Write Message to all at " + mapId +": " + JSON.stringify(res.data));
+    }
+
 });
 
 // emits when any error occurs -> calls closed event immediately after this.
@@ -238,7 +250,7 @@ client.on('data',function(data){
 
 // 87.78.129.86  | localhost
 
-/*const testClient = net.connect({host: 'localhost', port: 3000}, () => {
+const testClient = net.connect({host: 'localhost', port: 3000}, () => {
     console.log('connected to server!');
     //testClient.write('Hello World Client!\r\n');
     testClient.write(JSON.stringify({"mapId":"7fsfRSUCQ7YwfBEdRk_GivW6qzj","userId":"aKBNg9fbReqLedLiz1KFfA","name":"Summer 2021 - 01"}));