diff --git a/back/src/Controller/IoSocketController.ts b/back/src/Controller/IoSocketController.ts
index c69a64e3..77f3ac9e 100644
--- a/back/src/Controller/IoSocketController.ts
+++ b/back/src/Controller/IoSocketController.ts
@@ -6,10 +6,12 @@ import {ExSocketInterface} from "../Model/Websocket/ExSocketInterface"; //TODO f
 import Jwt, {JsonWebTokenError} from "jsonwebtoken";
 import {SECRET_KEY} from "../Enum/EnvironmentVariable"; //TODO fix import by "_Enum/..."
 import {ExtRooms, RefreshUserPositionFunction} from "../Model/Websocket/ExtRoom";
-import {ExtRoomsInterface} from "_Model/Websocket/ExtRoomsInterface";
+import {ExtRoomsInterface} from "../Model/Websocket/ExtRoomsInterface";
+import {World} from "../Model/World";
 
 export class IoSocketController{
     Io: socketIO.Server;
+    World: World;
     constructor(server : http.Server) {
         this.Io = socketIO(server);
 
@@ -29,6 +31,7 @@ export class IoSocketController{
 
         this.ioConnection();
         this.shareUsersPosition();
+        this.World = new World(this.connectedUser, this.disConnectedUser);
     }
 
     ioConnection() {
@@ -50,6 +53,9 @@ export class IoSocketController{
                 //join user in room
                 socket.join(messageUserPosition.roomId);
 
+                //join user in world
+                this.World.join(messageUserPosition);
+
                 // sending to all clients in room except sender
                 this.saveUserInformation((socket as ExSocketInterface), messageUserPosition);
 
@@ -67,6 +73,9 @@ export class IoSocketController{
                     return socket.emit("message-error", JSON.stringify({message: messageUserPosition.message}));
                 }
 
+                // update position in the worl
+                this.World.updatePosition(messageUserPosition);
+
                 // sending to all clients in room except sender
                 this.saveUserInformation((socket as ExSocketInterface), messageUserPosition);
 
@@ -135,8 +144,7 @@ export class IoSocketController{
     //Hydrate and manage error
     hydrateMessageReceive(message : string) : MessageUserPosition | Error{
         try {
-            let data = JSON.parse(message);
-            return new MessageUserPosition(data);
+            return new MessageUserPosition(JSON.parse(message));
         }catch (err) {
             //TODO log error
             return new Error(err);
@@ -180,4 +188,16 @@ export class IoSocketController{
             this.shareUsersPosition();
         }, 10);
     }
+
+    //connected user
+    connectedUser(user1 : string, user2 : string){
+        console.log("connectedUser => user1", user1);
+        console.log("connectedUser => user2", user2);
+    }
+
+    //connected user
+    disConnectedUser(user1 : string, user2 : string){
+        console.log("disConnectedUser => user1", user1);
+        console.log("disConnectedUser => user2", user2);
+    }
 }
diff --git a/back/src/Model/Websocket/Message.ts b/back/src/Model/Websocket/Message.ts
index d726968f..da265464 100644
--- a/back/src/Model/Websocket/Message.ts
+++ b/back/src/Model/Websocket/Message.ts
@@ -3,7 +3,7 @@ export class Message {
     roomId: string;
 
     constructor(data: any) {
-        if(!data.userId || !data.roomId){
+        if (!data.userId || !data.roomId) {
             throw Error("userId or roomId cannot be null");
         }
         this.userId = data.userId;
@@ -13,7 +13,7 @@ export class Message {
     toJson() {
         return {
             userId: this.userId,
-            roomId: this.roomId,
+            roomId: this.roomId
         }
     }
 }
\ No newline at end of file
diff --git a/back/src/Model/Websocket/MessageUserPosition.ts b/back/src/Model/Websocket/MessageUserPosition.ts
index 117c99cb..65f8f6c0 100644
--- a/back/src/Model/Websocket/MessageUserPosition.ts
+++ b/back/src/Model/Websocket/MessageUserPosition.ts
@@ -27,10 +27,9 @@ export class Point implements PointInterface{
 export class MessageUserPosition extends Message{
     position: PointInterface;
 
-    constructor(message: string) {
+    constructor(message: any) {
         super(message);
-        let data = JSON.parse(message);
-        this.position = new Point(data.position.x, data.position.y, data.position.direction);
+        this.position = new Point(message.position.x, message.position.y, message.position.direction);
     }
 
     toString() {