Merge pull request #280 from thecodingmachine/protobuf

Switching communication from JSON to protobuf

.env.template

@@ -1 +1,3 @@
 DEBUG_MODE=false
+JITSI_URL=meet.jit.si
+ADMIN_API_TOKEN=123

.github/workflows/build-and-deploy.yml

@@ -26,7 +26,7 @@ jobs:
         uses: docker/build-push-action@v1
         with:
           dockerfile: front/Dockerfile
-          path: front/
+          path: ./
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
           repository: thecodingmachine/workadventure-front
@@ -49,7 +49,7 @@ jobs:
         uses: docker/build-push-action@v1
         with:
           dockerfile: back/Dockerfile
-          path: back/
+          path: ./
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
           repository: thecodingmachine/workadventure-back

.github/workflows/continuous_integration.yml

@@ -20,12 +20,25 @@ jobs:
       - name: "Setup NodeJS"
         uses: actions/setup-node@v1
         with:
-          node-version: '12.x'
+          node-version: '14.x'
+
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v1
+        with:
+          version: '3.x'
 
       - name: "Install dependencies"
         run: yarn install
         working-directory: "front"
 
+      - name: "Install messages dependencies"
+        run: yarn install
+        working-directory: "messages"
+
+      - name: "Build proto messages"
+        run: yarn run proto && yarn run copy-to-front
+        working-directory: "messages"
+
       - name: "Build"
         run: yarn run build
         env:
@@ -54,10 +67,23 @@ jobs:
         with:
           node-version: '12.x'
 
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v1
+        with:
+          version: '3.x'
+
       - name: "Install dependencies"
         run: yarn install
         working-directory: "back"
 
+      - name: "Install messages dependencies"
+        run: yarn install
+        working-directory: "messages"
+
+      - name: "Build proto messages"
+        run: yarn run proto && yarn run copy-to-back
+        working-directory: "messages"
+
       - name: "Build"
         run: yarn run tsc
         working-directory: "back"

back/Dockerfile

@@ -1,6 +1,12 @@
+FROM thecodingmachine/workadventure-back-base:latest as builder
+WORKDIR /var/www/messages
+COPY --chown=docker:docker messages .
+RUN yarn install && yarn proto
+
 FROM thecodingmachine/nodejs:12
 
-COPY --chown=docker:docker . .
+COPY --chown=docker:docker back .
+COPY --from=builder --chown=docker:docker /var/www/messages/generated /usr/src/app/src/Messages/generated
 RUN yarn install
 
 ENV NODE_ENV=production

back/package.json

@@ -36,15 +36,12 @@
   },
   "homepage": "https://github.com/thecodingmachine/workadventure#readme",
   "dependencies": {
-    "@types/express": "^4.17.4",
-    "@types/http-status-codes": "^1.2.0",
-    "@types/jsonwebtoken": "^8.3.8",
-    "@types/socket.io": "^2.1.4",
-    "@types/uuidv4": "^5.0.0",
     "axios": "^0.20.0",
     "body-parser": "^1.19.0",
+    "circular-json": "^0.5.9",
     "express": "^4.17.1",
     "generic-type-guard": "^3.2.0",
+    "google-protobuf": "^3.13.0",
     "http-status-codes": "^1.4.0",
     "jsonwebtoken": "^8.5.1",
     "prom-client": "^12.0.0",
@@ -55,7 +52,14 @@
     "uuidv4": "^6.0.7"
   },
   "devDependencies": {
+    "@types/circular-json": "^0.4.0",
+    "@types/express": "^4.17.4",
+    "@types/google-protobuf": "^3.7.3",
+    "@types/http-status-codes": "^1.2.0",
     "@types/jasmine": "^3.5.10",
+    "@types/jsonwebtoken": "^8.3.8",
+    "@types/socket.io": "^2.1.4",
+    "@types/uuidv4": "^5.0.0",
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.26.0",
     "eslint": "^6.8.0",

back/src/App.ts

@@ -8,6 +8,7 @@ import * as http from "http";
 import {MapController} from "./Controller/MapController";
 import {PrometheusController} from "./Controller/PrometheusController";
 import {AdminController} from "./Controller/AdminController";
+import {DebugController} from "./Controller/DebugController";
 
 class App {
     public app: Application;
@@ -17,6 +18,7 @@ class App {
     public mapController: MapController;
     public prometheusController: PrometheusController;
     private adminController: AdminController;
+    private debugController: DebugController;
 
     constructor() {
         this.app = express();
@@ -35,6 +37,7 @@ class App {
         this.mapController = new MapController(this.app);
         this.prometheusController = new PrometheusController(this.app, this.ioSocketController);
         this.adminController = new AdminController(this.app);
+        this.debugController = new DebugController(this.app, this.ioSocketController);
     }
 
     // TODO add session user

back/src/Controller/AuthenticateController.ts

@@ -6,7 +6,7 @@ import { uuid } from 'uuidv4';
 
 export interface TokenInterface {
     name: string,
-    userId: string
+    userUuid: string
 }
 
 export class AuthenticateController {
@@ -28,12 +28,12 @@ export class AuthenticateController {
                 });
             }*/
             //TODO check user email for The Coding Machine game
-            const userId = uuid();
+            const userUuid = uuid();
-            const token = Jwt.sign({name: param.name, userId: userId} as TokenInterface, SECRET_KEY, {expiresIn: '24h'});
+            const token = Jwt.sign({name: param.name, userUuid: userUuid} as TokenInterface, SECRET_KEY, {expiresIn: '24h'});
             return res.status(OK).send({
                 token: token,
                 mapUrlStart: URL_ROOM_STARTED,
-                userId: userId,
+                userId: userUuid,
             });
         });
     }

back/src/Controller/DebugController.ts

@@ -0,0 +1,41 @@
+import {Application, Request, Response} from "express";
+import {OK} from "http-status-codes";
+import {ADMIN_API_TOKEN} from "../Enum/EnvironmentVariable";
+import {IoSocketController} from "_Controller/IoSocketController";
+import {stringify} from "circular-json";
+
+export class DebugController {
+    constructor(private App : Application, private ioSocketController: IoSocketController) {
+        this.getDump();
+    }
+
+
+    getDump(){
+        this.App.get("/dump", (req: Request, res: Response) => {
+            if (req.query.token !== ADMIN_API_TOKEN) {
+                return res.status(401).send('Invalid token sent!');
+            }
+
+            return res.status(OK).contentType('application/json').send(stringify(
+                this.ioSocketController.getWorlds(),
+                (key: unknown, value: unknown) => {
+                    if(value instanceof Map) {
+                        const obj: any = {}; // eslint-disable-line @typescript-eslint/no-explicit-any
+                        for (const [mapKey, mapValue] of value.entries()) {
+                            obj[mapKey] = mapValue;
+                        }
+                        return obj;
+                    } else if(value instanceof Set) {
+                            const obj: Array<unknown> = [];
+                            for (const [setKey, setValue] of value.entries()) {
+                                obj.push(setValue);
+                            }
+                            return obj;
+                    } else {
+                        return value;
+                    }
+                }
+            ));
+        });
+    }
+}

back/src/Controller/IoSocketController.ts

@@ -10,22 +10,35 @@ import {Group} from "../Model/Group";
 import {User} from "../Model/User";
 import {isSetPlayerDetailsMessage,} from "../Model/Websocket/SetPlayerDetailsMessage";
 import {MessageUserJoined} from "../Model/Websocket/MessageUserJoined";
-import {MessageUserMoved} from "../Model/Websocket/MessageUserMoved";
 import si from "systeminformation";
 import {Gauge} from "prom-client";
 import {TokenInterface} from "../Controller/AuthenticateController";
 import {isJoinRoomMessageInterface} from "../Model/Websocket/JoinRoomMessage";
-import {isPointInterface, PointInterface} from "../Model/Websocket/PointInterface";
+import {PointInterface} from "../Model/Websocket/PointInterface";
 import {isWebRtcSignalMessageInterface} from "../Model/Websocket/WebRtcSignalMessage";
 import {UserInGroupInterface} from "../Model/Websocket/UserInGroupInterface";
 import {isItemEventMessageInterface} from "../Model/Websocket/ItemEventMessage";
 import {uuid} from 'uuidv4';
-import {isUserMovesInterface} from "../Model/Websocket/UserMovesMessage";
-import {isViewport} from "../Model/Websocket/ViewportMessage";
 import {GroupUpdateInterface} from "_Model/Websocket/GroupUpdateInterface";
 import {Movable} from "../Model/Movable";
+import {
+    PositionMessage,
+    SetPlayerDetailsMessage,
+    SubMessage,
+    UserMovedMessage,
+    BatchMessage,
+    GroupUpdateMessage,
+    PointMessage,
+    GroupDeleteMessage,
+    UserJoinedMessage,
+    UserLeftMessage,
+    ItemEventMessage, ViewportMessage
+} from "../Messages/generated/messages_pb";
+import {UserMovesMessage} from "../Messages/generated/messages_pb";
+import Direction = PositionMessage.Direction;
+import {ProtobufUtils} from "../Model/Websocket/ProtobufUtils";
 
-enum SockerIoEvent {
+enum SocketIoEvent {
     CONNECTION = "connection",
     DISCONNECT = "disconnect",
     JOIN_ROOM = "join-room", // bi-directional
@@ -46,13 +59,13 @@ enum SockerIoEvent {
     BATCH = "batch",
 }
 
-function emitInBatch(socket: ExSocketInterface, event: string | symbol, payload: unknown): void {
+function emitInBatch(socket: ExSocketInterface, event: string, payload: SubMessage): void {
-    socket.batchedMessages.push({ event, payload});
+    socket.batchedMessages.addPayload(payload);
 
     if (socket.batchTimeout === null) {
         socket.batchTimeout = setTimeout(() => {
-            socket.emit(SockerIoEvent.BATCH, socket.batchedMessages);
+            socket./*binary(true).*/emit(SocketIoEvent.BATCH, socket.batchedMessages.serializeBinary().buffer);
-            socket.batchedMessages = [];
+            socket.batchedMessages = new BatchMessage();
             socket.batchTimeout = null;
         }, 100);
     }
@@ -61,9 +74,10 @@ function emitInBatch(socket: ExSocketInterface, event: string | symbol, payload:
 export class IoSocketController {
     public readonly Io: socketIO.Server;
     private Worlds: Map<string, World> = new Map<string, World>();
-    private sockets: Map<string, ExSocketInterface> = new Map<string, ExSocketInterface>();
+    private sockets: Map<number, ExSocketInterface> = new Map<number, ExSocketInterface>();
     private nbClientsGauge: Gauge<string>;
     private nbClientsPerRoomGauge: Gauge<string>;
+    private nextUserId: number = 1;
 
     constructor(server: http.Server) {
         this.Io = socketIO(server);
@@ -81,7 +95,7 @@ export class IoSocketController {
         // Authentication with token. it will be decoded and stored in the socket.
         // Completely commented for now, as we do not use the "/login" route at all.
         this.Io.use((socket: Socket, next) => {
-            console.log(socket.handshake.query.token);
+            //console.log(socket.handshake.query.token);
             if (!socket.handshake.query || !socket.handshake.query.token) {
                 console.error('An authentication error happened, a user tried to connect without a token.');
                 return next(new Error('Authentication error'));
@@ -89,7 +103,9 @@ export class IoSocketController {
             if(socket.handshake.query.token === 'test'){
                 if (ALLOW_ARTILLERY) {
                     (socket as ExSocketInterface).token = socket.handshake.query.token;
-                    (socket as ExSocketInterface).userId = uuid();
+                    (socket as ExSocketInterface).userId = this.nextUserId;
+                    (socket as ExSocketInterface).userUuid = uuid();
+                    this.nextUserId++;
                     (socket as ExSocketInterface).isArtillery = true;
                     console.log((socket as ExSocketInterface).userId);
                     next();
@@ -115,7 +131,9 @@ export class IoSocketController {
                 }
 
                 (socket as ExSocketInterface).token = socket.handshake.query.token;
-                (socket as ExSocketInterface).userId = tokenDecoded.userId;
+                (socket as ExSocketInterface).userId = this.nextUserId;
+                (socket as ExSocketInterface).userUuid = tokenDecoded.userUuid;
+                this.nextUserId++;
                 next();
             });
         });
@@ -124,7 +142,7 @@ export class IoSocketController {
     }
 
     private isValidToken(token: object): token is TokenInterface {
-        if (typeof((token as TokenInterface).userId) !== 'string') {
+        if (typeof((token as TokenInterface).userUuid) !== 'string') {
             return false;
         }
         if (typeof((token as TokenInterface).name) !== 'string') {
@@ -150,11 +168,11 @@ export class IoSocketController {
     }
 
     ioConnection() {
-        this.Io.on(SockerIoEvent.CONNECTION, (socket: Socket) => {
+        this.Io.on(SocketIoEvent.CONNECTION, (socket: Socket) => {
             const client : ExSocketInterface = socket as ExSocketInterface;
-            client.batchedMessages = [];
+            client.batchedMessages = new BatchMessage();
             client.batchTimeout = null;
-            client.emitInBatch = (event: string | symbol, payload: unknown): void => {
+            client.emitInBatch = (event: string, payload: SubMessage): void => {
                 emitInBatch(client, event, payload);
             }
             this.sockets.set(client.userId, client);
@@ -163,8 +181,8 @@ export class IoSocketController {
             const srvSockets = this.Io.sockets.sockets;
             this.nbClientsGauge.inc();
             console.log(new Date().toISOString() + ' A user joined (', Object.keys(srvSockets).length, ' connected users)');
-            si.currentLoad().then(data => console.log('  Current load: ', data.avgload));
+            //si.currentLoad().then(data => console.log('  Current load: ', data.avgload));
-            si.currentLoad().then(data => console.log('  CPU: ', data.currentload, '%'));
+            //si.currentLoad().then(data => console.log('  CPU: ', data.currentload, '%'));
             // End log server load
 
             /*join-rom event permit to join one room.
@@ -175,11 +193,11 @@ export class IoSocketController {
                         x: user x position on map
                         y: user y position on map
             */
-            socket.on(SockerIoEvent.JOIN_ROOM, (message: unknown, answerFn): void => {
+            socket.on(SocketIoEvent.JOIN_ROOM, (message: unknown, answerFn): void => {
-                console.log(SockerIoEvent.JOIN_ROOM, message);
+                //console.log(SocketIoEvent.JOIN_ROOM, message);
                 try {
                     if (!isJoinRoomMessageInterface(message)) {
-                        socket.emit(SockerIoEvent.MESSAGE_ERROR, {message: 'Invalid JOIN_ROOM message.'});
+                        socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid JOIN_ROOM message.'});
                         console.warn('Invalid JOIN_ROOM message received: ', message);
                         return;
                     }
@@ -243,17 +261,19 @@ export class IoSocketController {
                 }
             });
 
-            socket.on(SockerIoEvent.SET_VIEWPORT, (message: unknown): void => {
+            socket.on(SocketIoEvent.SET_VIEWPORT, (message: unknown): void => {
                 try {
-                    //console.log('SET_VIEWPORT')
+                    if (!(message instanceof Buffer)) {
-                    if (!isViewport(message)) {
+                        socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid SET_VIEWPORT message. Expecting binary buffer.'});
-                        socket.emit(SockerIoEvent.MESSAGE_ERROR, {message: 'Invalid SET_VIEWPORT message.'});
+                        console.warn('Invalid SET_VIEWPORT message received (expecting binary buffer): ', message);
-                        console.warn('Invalid SET_VIEWPORT message received: ', message);
                         return;
                     }
 
+                    const viewportMessage = ViewportMessage.deserializeBinary(new Uint8Array(message as ArrayBuffer));
+                    const viewport = viewportMessage.toObject();
+
                     const Client = (socket as ExSocketInterface);
-                    Client.viewport = message;
+                    Client.viewport = viewport;
 
                     const world = this.Worlds.get(Client.roomId);
                     if (!world) {
@@ -267,20 +287,55 @@ export class IoSocketController {
                 }
             });
 
-            socket.on(SockerIoEvent.USER_POSITION, (userMovesMessage: unknown): void => {
+            socket.on(SocketIoEvent.USER_POSITION, (message: unknown): void => {
                 //console.log(SockerIoEvent.USER_POSITION, userMovesMessage);
                 try {
-                    if (!isUserMovesInterface(userMovesMessage)) {
+                    if (!(message instanceof Buffer)) {
-                        socket.emit(SockerIoEvent.MESSAGE_ERROR, {message: 'Invalid USER_POSITION message.'});
+                        socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid USER_POSITION message. Expecting binary buffer.'});
-                        console.warn('Invalid USER_POSITION message received: ', userMovesMessage);
+                        console.warn('Invalid USER_POSITION message received (expecting binary buffer): ', message);
                         return;
                     }
 
+                    const userMovesMessage = UserMovesMessage.deserializeBinary(new Uint8Array(message as ArrayBuffer));
+                    const userMoves = userMovesMessage.toObject();
+
+                    const position = userMoves.position;
+                    if (position === undefined) {
+                        throw new Error('Position not found in message');
+                    }
+                    const viewport = userMoves.viewport;
+                    if (viewport === undefined) {
+                        throw new Error('Viewport not found in message');
+                    }
+
+                    let direction: string;
+                    switch (position.direction) {
+                        case Direction.UP:
+                            direction = 'up';
+                            break;
+                        case Direction.DOWN:
+                            direction = 'down';
+                            break;
+                        case Direction.LEFT:
+                            direction = 'left';
+                            break;
+                        case Direction.RIGHT:
+                            direction = 'right';
+                            break;
+                        default:
+                            throw new Error("Unexpected direction");
+                    }
+
                     const Client = (socket as ExSocketInterface);
 
                     // sending to all clients in room except sender
-                    Client.position = userMovesMessage.position;
+                    Client.position = {
-                    Client.viewport = userMovesMessage.viewport;
+                        x: position.x,
+                        y: position.y,
+                        direction,
+                        moving: position.moving,
+                    };
+                    Client.viewport = viewport;
 
                     // update position in the world
                     const world = this.Worlds.get(Client.roomId);
@@ -296,15 +351,15 @@ export class IoSocketController {
                 }
             });
 
-            socket.on(SockerIoEvent.WEBRTC_SIGNAL, (data: unknown) => {
+            socket.on(SocketIoEvent.WEBRTC_SIGNAL, (data: unknown) => {
                 this.emitVideo((socket as ExSocketInterface), data);
             });
 
-            socket.on(SockerIoEvent.WEBRTC_SCREEN_SHARING_SIGNAL, (data: unknown) => {
+            socket.on(SocketIoEvent.WEBRTC_SCREEN_SHARING_SIGNAL, (data: unknown) => {
                 this.emitScreenSharing((socket as ExSocketInterface), data);
             });
 
-            socket.on(SockerIoEvent.DISCONNECT, () => {
+            socket.on(SocketIoEvent.DISCONNECT, () => {
                 const Client = (socket as ExSocketInterface);
                 try {
                     //leave room
@@ -328,16 +383,27 @@ export class IoSocketController {
                 const srvSockets = this.Io.sockets.sockets;
                 this.nbClientsGauge.dec();
                 console.log('A user left (', Object.keys(srvSockets).length, ' connected users)');
-                si.currentLoad().then(data => console.log('Current load: ', data.avgload));
+                //si.currentLoad().then(data => console.log('Current load: ', data.avgload));
-                si.currentLoad().then(data => console.log('CPU: ', data.currentload, '%'));
+                //si.currentLoad().then(data => console.log('CPU: ', data.currentload, '%'));
                 // End log server load
             });
 
             // Let's send the user id to the user
-            socket.on(SockerIoEvent.SET_PLAYER_DETAILS, (playerDetails: unknown, answerFn) => {
+            socket.on(SocketIoEvent.SET_PLAYER_DETAILS, (message: unknown, answerFn) => {
-                console.log(SockerIoEvent.SET_PLAYER_DETAILS, playerDetails);
+                //console.log(SocketIoEvent.SET_PLAYER_DETAILS, message);
+                if (!(message instanceof Buffer)) {
+                    socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid SET_PLAYER_DETAILS message. Expecting binary buffer.'});
+                    console.warn('Invalid SET_PLAYER_DETAILS message received (expecting binary buffer): ', message);
+                    return;
+                }
+                const playerDetailsMessage = SetPlayerDetailsMessage.deserializeBinary(new Uint8Array(message));
+                const playerDetails = {
+                    name: playerDetailsMessage.getName(),
+                    characterLayers: playerDetailsMessage.getCharacterlayersList()
+                };
+                //console.log(SocketIoEvent.SET_PLAYER_DETAILS, playerDetails);
                 if (!isSetPlayerDetailsMessage(playerDetails)) {
-                    socket.emit(SockerIoEvent.MESSAGE_ERROR, {message: 'Invalid SET_PLAYER_DETAILS message.'});
+                    socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid SET_PLAYER_DETAILS message.'});
                     console.warn('Invalid SET_PLAYER_DETAILS message received: ', playerDetails);
                     return;
                 }
@@ -350,10 +416,10 @@ export class IoSocketController {
                 }
             });
 
-            socket.on(SockerIoEvent.SET_SILENT, (silent: unknown) => {
+            socket.on(SocketIoEvent.SET_SILENT, (silent: unknown) => {
-                console.log(SockerIoEvent.SET_SILENT, silent);
+                //console.log(SocketIoEvent.SET_SILENT, silent);
                 if (typeof silent !== "boolean") {
-                    socket.emit(SockerIoEvent.MESSAGE_ERROR, {message: 'Invalid SET_SILENT message.'});
+                    socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid SET_SILENT message.'});
                     console.warn('Invalid SET_SILENT message received: ', silent);
                     return;
                 }
@@ -374,22 +440,42 @@ export class IoSocketController {
                 }
             });
 
-            socket.on(SockerIoEvent.ITEM_EVENT, (itemEvent: unknown) => {
+            socket.on(SocketIoEvent.ITEM_EVENT, (message: unknown) => {
-                if (!isItemEventMessageInterface(itemEvent)) {
+                if (!(message instanceof Buffer)) {
-                    socket.emit(SockerIoEvent.MESSAGE_ERROR, {message: 'Invalid ITEM_EVENT message.'});
+                    socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid ITEM_EVENT message. Expecting binary buffer.'});
-                    console.warn('Invalid ITEM_EVENT message received: ', itemEvent);
+                    console.warn('Invalid ITEM_EVENT message received (expecting binary buffer): ', message);
                     return;
                 }
+                const itemEventMessage = ItemEventMessage.deserializeBinary(new Uint8Array(message));
+
+                const itemEvent = ProtobufUtils.toItemEvent(itemEventMessage);
+
+                /*if (!isItemEventMessageInterface(itemEvent)) {
+                    socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid ITEM_EVENT message.'});
+                    console.warn('Invalid ITEM_EVENT message received: ', itemEvent);
+                    return;
+                }*/
                 try {
                     const Client = (socket as ExSocketInterface);
 
-                    socket.to(Client.roomId).emit(SockerIoEvent.ITEM_EVENT, itemEvent);
+                    //socket.to(Client.roomId).emit(SocketIoEvent.ITEM_EVENT, itemEvent);
 
                     const world = this.Worlds.get(Client.roomId);
                     if (!world) {
                         console.error("Could not find world with id '", Client.roomId, "'");
                         return;
                     }
+
+                    const subMessage = new SubMessage();
+                    subMessage.setItemeventmessage(itemEventMessage);
+
+                    // Let's send the event without using the SocketIO room.
+                    for (const user of world.getUsers().values()) {
+                        const client = this.searchClientByIdOrFail(user.id);
+                        //client.emit(SocketIoEvent.ITEM_EVENT, itemEvent);
+                        emitInBatch(client, SocketIoEvent.ITEM_EVENT, subMessage);
+                    }
+
                     world.setItemState(itemEvent.itemId, itemEvent.state);
                 } catch (e) {
                     console.error('An error occurred on "item_event"');
@@ -401,7 +487,7 @@ export class IoSocketController {
 
     emitVideo(socket: ExSocketInterface, data: unknown){
         if (!isWebRtcSignalMessageInterface(data)) {
-            socket.emit(SockerIoEvent.MESSAGE_ERROR, {message: 'Invalid WEBRTC_SIGNAL message.'});
+            socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid WEBRTC_SIGNAL message.'});
             console.warn('Invalid WEBRTC_SIGNAL message received: ', data);
             return;
         }
@@ -411,7 +497,7 @@ export class IoSocketController {
             console.warn("While exchanging a WebRTC signal: client with id ", data.receiverId, " does not exist. This might be a race condition.");
             return;
         }
-        return client.emit(SockerIoEvent.WEBRTC_SIGNAL, {
+        return client.emit(SocketIoEvent.WEBRTC_SIGNAL, {
             userId: socket.userId,
             signal: data.signal
         });
@@ -419,7 +505,7 @@ export class IoSocketController {
 
     emitScreenSharing(socket: ExSocketInterface, data: unknown){
         if (!isWebRtcSignalMessageInterface(data)) {
-            socket.emit(SockerIoEvent.MESSAGE_ERROR, {message: 'Invalid WEBRTC_SCREEN_SHARING message.'});
+            socket.emit(SocketIoEvent.MESSAGE_ERROR, {message: 'Invalid WEBRTC_SCREEN_SHARING message.'});
             console.warn('Invalid WEBRTC_SCREEN_SHARING message received: ', data);
             return;
         }
@@ -429,13 +515,13 @@ export class IoSocketController {
             console.warn("While exchanging a WEBRTC_SCREEN_SHARING signal: client with id ", data.receiverId, " does not exist. This might be a race condition.");
             return;
         }
-        return client.emit(SockerIoEvent.WEBRTC_SCREEN_SHARING_SIGNAL, {
+        return client.emit(SocketIoEvent.WEBRTC_SCREEN_SHARING_SIGNAL, {
             userId: socket.userId,
             signal: data.signal
         });
     }
 
-    searchClientByIdOrFail(userId: string): ExSocketInterface {
+    searchClientByIdOrFail(userId: number): ExSocketInterface {
         const client: ExSocketInterface|undefined = this.sockets.get(userId);
         if (client === undefined) {
             throw new Error("Could not find user with id " + userId);
@@ -474,22 +560,27 @@ export class IoSocketController {
         //check and create new world for a room
         let world = this.Worlds.get(roomId)
         if(world === undefined){
-            world = new World((user1: string, group: Group) => {
+            world = new World((user1: number, group: Group) => {
                 this.connectedUser(user1, group);
-            }, (user1: string, group: Group) => {
+            }, (user1: number, group: Group) => {
                 this.disConnectedUser(user1, group);
             }, MINIMUM_DISTANCE, GROUP_RADIUS, (thing: Movable, listener: User) => {
                 const clientListener = this.searchClientByIdOrFail(listener.id);
                 if (thing instanceof User) {
                     const clientUser = this.searchClientByIdOrFail(thing.id);
-                    const messageUserJoined = new MessageUserJoined(clientUser.userId, clientUser.name, clientUser.characterLayers, clientUser.position);
 
-                    clientListener.emit(SockerIoEvent.JOIN_ROOM, messageUserJoined);
+                    const userJoinedMessage = new UserJoinedMessage();
+                    userJoinedMessage.setUserid(clientUser.userId);
+                    userJoinedMessage.setName(clientUser.name);
+                    userJoinedMessage.setCharacterlayersList(clientUser.characterLayers);
+                    userJoinedMessage.setPosition(ProtobufUtils.toPositionMessage(clientUser.position));
+
+                    const subMessage = new SubMessage();
+                    subMessage.setUserjoinedmessage(userJoinedMessage);
+
+                    emitInBatch(clientListener, SocketIoEvent.JOIN_ROOM, subMessage);
                 } else if (thing instanceof Group) {
-                    clientListener.emit(SockerIoEvent.GROUP_CREATE_UPDATE, {
+                    this.emitCreateUpdateGroupEvent(clientListener, thing);
-                        position: thing.getPosition(),
-                        groupId: thing.getId()
-                    } as GroupUpdateInterface);
                 } else {
                     console.error('Unexpected type for Movable.');
                 }
@@ -498,13 +589,17 @@ export class IoSocketController {
                 if (thing instanceof User) {
                     const clientUser = this.searchClientByIdOrFail(thing.id);
 
-                    clientListener.emitInBatch(SockerIoEvent.USER_MOVED, new MessageUserMoved(clientUser.userId, clientUser.position));
+                    const userMovedMessage = new UserMovedMessage();
+                    userMovedMessage.setUserid(clientUser.userId);
+                    userMovedMessage.setPosition(ProtobufUtils.toPositionMessage(clientUser.position));
+
+                    const subMessage = new SubMessage();
+                    subMessage.setUsermovedmessage(userMovedMessage);
+
+                    clientListener.emitInBatch(SocketIoEvent.USER_MOVED, subMessage);
                     //console.log("Sending USER_MOVED event");
                 } else if (thing instanceof Group) {
-                    clientListener.emit(SockerIoEvent.GROUP_CREATE_UPDATE, {
+                    this.emitCreateUpdateGroupEvent(clientListener, thing);
-                        position: thing.getPosition(),
-                        groupId: thing.getId()
-                    } as GroupUpdateInterface);
                 } else {
                     console.error('Unexpected type for Movable.');
                 }
@@ -512,10 +607,9 @@ export class IoSocketController {
                 const clientListener = this.searchClientByIdOrFail(listener.id);
                 if (thing instanceof User) {
                     const clientUser = this.searchClientByIdOrFail(thing.id);
-                    clientListener.emit(SockerIoEvent.USER_LEFT, clientUser.userId);
+                    this.emitUserLeftEvent(clientListener, clientUser.userId);
-                    //console.log("Sending USER_LEFT event");
                 } else if (thing instanceof Group) {
-                    clientListener.emit(SockerIoEvent.GROUP_DELETE, thing.getId());
+                    this.emitDeleteGroupEvent(clientListener, thing.getId());
                 } else {
                     console.error('Unexpected type for Movable.');
                 }
@@ -526,16 +620,52 @@ export class IoSocketController {
 
         // Dispatch groups position to newly connected user
         world.getGroups().forEach((group: Group) => {
-            Client.emit(SockerIoEvent.GROUP_CREATE_UPDATE, {
+            this.emitCreateUpdateGroupEvent(Client, group);
-                position: group.getPosition(),
-                groupId: group.getId()
-            } as GroupUpdateInterface);
         });
         //join world
         world.join(Client, Client.position);
         return world;
     }
 
+    private emitCreateUpdateGroupEvent(socket: Socket, group: Group): void {
+        const position = group.getPosition();
+        const pointMessage = new PointMessage();
+        pointMessage.setX(Math.floor(position.x));
+        pointMessage.setY(Math.floor(position.y));
+        const groupUpdateMessage = new GroupUpdateMessage();
+        groupUpdateMessage.setGroupid(group.getId());
+        groupUpdateMessage.setPosition(pointMessage);
+
+        const subMessage = new SubMessage();
+        subMessage.setGroupupdatemessage(groupUpdateMessage);
+
+        const client : ExSocketInterface = socket as ExSocketInterface;
+        emitInBatch(client, SocketIoEvent.GROUP_CREATE_UPDATE, subMessage);
+        //socket.emit(SocketIoEvent.GROUP_CREATE_UPDATE, groupUpdateMessage.serializeBinary().buffer);
+    }
+
+    private emitDeleteGroupEvent(socket: Socket, groupId: number): void {
+        const groupDeleteMessage = new GroupDeleteMessage();
+        groupDeleteMessage.setGroupid(groupId);
+
+        const subMessage = new SubMessage();
+        subMessage.setGroupdeletemessage(groupDeleteMessage);
+
+        const client : ExSocketInterface = socket as ExSocketInterface;
+        emitInBatch(client, SocketIoEvent.GROUP_DELETE, subMessage);
+    }
+
+    private emitUserLeftEvent(socket: Socket, userId: number): void {
+        const userLeftMessage = new UserLeftMessage();
+        userLeftMessage.setUserid(userId);
+
+        const subMessage = new SubMessage();
+        subMessage.setUserleftmessage(userLeftMessage);
+
+        const client : ExSocketInterface = socket as ExSocketInterface;
+        emitInBatch(client, SocketIoEvent.USER_LEFT, subMessage);
+    }
+
     /**
      *
      * @param socket
@@ -571,7 +701,7 @@ export class IoSocketController {
                 return tabs;
             }, []);
 
-            client.emit(SockerIoEvent.WEBRTC_START, {clients: peerClients, roomId: roomId});
+            client.emit(SocketIoEvent.WEBRTC_START, {clients: peerClients, roomId: roomId});
         });
     }
 
@@ -593,19 +723,19 @@ export class IoSocketController {
      **/
 
     //connected user
-    connectedUser(userId: string, group: Group) {
+    connectedUser(userId: number, group: Group) {
         /*let Client = this.sockets.get(userId);
         if (Client === undefined) {
             return;
         }*/
         const Client = this.searchClientByIdOrFail(userId);
-        this.joinWebRtcRoom(Client, group.getId());
+        this.joinWebRtcRoom(Client, "webrtcroom"+group.getId());
     }
 
     //disconnect user
-    disConnectedUser(userId: string, group: Group) {
+    disConnectedUser(userId: number, group: Group) {
         const Client = this.searchClientByIdOrFail(userId);
-        Client.to(group.getId()).emit(SockerIoEvent.WEBRTC_DISCONNECT, {
+        Client.to("webrtcroom"+group.getId()).emit(SocketIoEvent.WEBRTC_DISCONNECT, {
             userId: userId
         });
 
@@ -615,7 +745,7 @@ export class IoSocketController {
         // the other player will try connecting until a timeout happens (during this time, the connection icon will be displayed for nothing).
         // So we also send the disconnect event to the other player.
         for (const user of group.getUsers()) {
-            Client.emit(SockerIoEvent.WEBRTC_DISCONNECT, {
+            Client.emit(SocketIoEvent.WEBRTC_DISCONNECT, {
                 userId: user.id
             });
         }
@@ -627,4 +757,8 @@ export class IoSocketController {
         Client.leave(Client.webRtcRoomId);
         delete Client.webRtcRoomId;
     }
+
+    public getWorlds(): Map<string, World> {
+        return this.Worlds;
+    }
 }

back/src/Messages/.gitignore

@@ -0,0 +1 @@
+/generated/

back/src/Model/Group.ts

@@ -3,32 +3,36 @@ import { User } from "./User";
 import {PositionInterface} from "_Model/PositionInterface";
 import {uuid} from "uuidv4";
 import {Movable} from "_Model/Movable";
+import {PositionNotifier} from "_Model/PositionNotifier";
 
 export class Group implements Movable {
     static readonly MAX_PER_GROUP = 4;
 
-    private id: string;
+    private static nextId: number = 1;
+
+    private id: number;
     private users: Set<User>;
-    private connectCallback: ConnectCallback;
+    private x!: number;
-    private disconnectCallback: DisconnectCallback;
+    private y!: number;
 
 
-    constructor(users: User[], connectCallback: ConnectCallback, disconnectCallback: DisconnectCallback) {
+    constructor(users: User[], private connectCallback: ConnectCallback, private disconnectCallback: DisconnectCallback, private positionNotifier: PositionNotifier) {
         this.users = new Set<User>();
-        this.connectCallback = connectCallback;
+        this.id = Group.nextId;
-        this.disconnectCallback = disconnectCallback;
+        Group.nextId++;
-        this.id = uuid();
 
         users.forEach((user: User) => {
             this.join(user);
         });
+
+        this.updatePosition();
     }
 
     getUsers(): User[] {
         return Array.from(this.users.values());
     }
 
-    getId() : string{
+    getId() : number {
         return this.id;
     }
 
@@ -36,19 +40,40 @@ export class Group implements Movable {
      * Returns the barycenter of all users (i.e. the center of the group)
      */
     getPosition(): PositionInterface {
+        return {
+            x: this.x,
+            y: this.y
+        };
+    }
+
+    /**
+     * Computes the barycenter of all users (i.e. the center of the group)
+     */
+    updatePosition(): void {
+        const oldX = this.x;
+        const oldY = this.y;
+
         let x = 0;
         let y = 0;
         // Let's compute the barycenter of all users.
         this.users.forEach((user: User) => {
-            x += user.position.x;
+            const position = user.getPosition();
-            y += user.position.y;
+            x += position.x;
+            y += position.y;
         });
         x /= this.users.size;
         y /= this.users.size;
-        return {
+        if (this.users.size === 0) {
-            x,
+            throw new Error("EMPTY GROUP FOUND!!!");
-            y
+        }
-        };
+        this.x = x;
+        this.y = y;
+
+        if (oldX === undefined) {
+            this.positionNotifier.enter(this);
+        } else {
+            this.positionNotifier.updatePosition(this, {x, y}, {x: oldX, y: oldY});
+        }
     }
 
     isFull(): boolean {
@@ -75,6 +100,10 @@ export class Group implements Movable {
         }
         user.group = undefined;
 
+        if (this.users.size !== 0) {
+            this.updatePosition();
+        }
+
         // Broadcast on the right event
         this.disconnectCallback(user.id, this);
     }

back/src/Model/PositionNotifier.ts

@@ -74,6 +74,13 @@ export class PositionNotifier {
         return things;
     }
 
+    public enter(thing: Movable): void {
+        const position = thing.getPosition();
+        const zoneDesc = this.getZoneDescriptorFromCoordinates(position.x, position.y);
+        const zone = this.getZone(zoneDesc.i, zoneDesc.j);
+        zone.enter(thing, null, position);
+    }
+
     public updatePosition(thing: Movable, newPosition: PositionInterface, oldPosition: PositionInterface): void {
         // Did we change zone?
         const oldZoneDesc = this.getZoneDescriptorFromCoordinates(oldPosition.x, oldPosition.y);
@@ -117,7 +124,7 @@ export class PositionNotifier {
 
         let zone = this.zones[j][i];
         if (zone === undefined) {
-            zone = new Zone(this.onUserEnters, this.onUserMoves, this.onUserLeaves);
+            zone = new Zone(this.onUserEnters, this.onUserMoves, this.onUserLeaves, i, j);
             this.zones[j][i] = zone;
         }
         return zone;

back/src/Model/User.ts

@@ -3,21 +3,30 @@ import { PointInterface } from "./Websocket/PointInterface";
 import {Zone} from "_Model/Zone";
 import {Movable} from "_Model/Movable";
 import {PositionInterface} from "_Model/PositionInterface";
+import {PositionNotifier} from "_Model/PositionNotifier";
 
 export class User implements Movable {
     public listenedZones: Set<Zone>;
     public group?: Group;
 
     public constructor(
-        public id: string,
+        public id: number,
-        public position: PointInterface,
+        private position: PointInterface,
         public silent: boolean,
-
+        private positionNotifier: PositionNotifier
     ) {
         this.listenedZones = new Set<Zone>();
+
+        this.positionNotifier.enter(this);
     }
 
-    public getPosition(): PositionInterface {
+    public getPosition(): PointInterface {
         return this.position;
     }
+
+    public setPosition(position: PointInterface): void {
+        const oldPosition = this.position;
+        this.position = position;
+        this.positionNotifier.updatePosition(this, position, oldPosition);
+    }
 }

back/src/Model/Websocket/ExSocketInterface.ts

@@ -3,12 +3,14 @@ import {PointInterface} from "./PointInterface";
 import {Identificable} from "./Identificable";
 import {TokenInterface} from "../../Controller/AuthenticateController";
 import {ViewportInterface} from "_Model/Websocket/ViewportMessage";
+import {BatchMessage, SubMessage} from "../../Messages/generated/messages_pb";
 
 export interface ExSocketInterface extends Socket, Identificable {
     token: string;
     roomId: string;
-    webRtcRoomId: string;
+    webRtcRoomId: string|undefined;
-    userId: string;
+    userId: number;   // A temporary (autoincremented) identifier for this user
+    userUuid: string; // A unique identifier for this user
     name: string;
     characterLayers: string[];
     position: PointInterface;
@@ -17,7 +19,7 @@ export interface ExSocketInterface extends Socket, Identificable {
     /**
      * Pushes an event that will be sent in the next batch of events
      */
-    emitInBatch: (event: string | symbol, payload: unknown) => void;
+    emitInBatch: (event: string, payload: SubMessage) => void;
-    batchedMessages: Array<{ event: string | symbol, payload: unknown }>;
+    batchedMessages: BatchMessage;
     batchTimeout: NodeJS.Timeout|null;
 }

back/src/Model/Websocket/GroupUpdateInterface.ts

@@ -2,5 +2,5 @@ import {PositionInterface} from "_Model/PositionInterface";
 
 export interface GroupUpdateInterface {
     position: PositionInterface,
-    groupId: string,
+    groupId: number,
 }

back/src/Model/Websocket/Identificable.ts

@@ -1,3 +1,3 @@
 export interface Identificable {
-    userId: string;
+    userId: number;
 }

back/src/Model/Websocket/MessageUserJoined.ts

@@ -1,6 +1,6 @@
 import {PointInterface} from "_Model/Websocket/PointInterface";
 
 export class MessageUserJoined {
-    constructor(public userId: string, public name: string, public characterLayers: string[], public position: PointInterface) {
+    constructor(public userId: number, public name: string, public characterLayers: string[], public position: PointInterface) {
     }
 }

back/src/Model/Websocket/MessageUserMoved.ts

@@ -1,6 +0,0 @@
-import {PointInterface} from "./PointInterface";
-
-export class MessageUserMoved {
-    constructor(public userId: string, public position: PointInterface) {
-    }
-}

back/src/Model/Websocket/MessageUserPosition.ts

@@ -6,6 +6,6 @@ export class Point implements PointInterface{
 }
 
 export class MessageUserPosition {
-    constructor(public userId: string, public name: string, public characterLayers: string[], public position: PointInterface) {
+    constructor(public userId: number, public name: string, public characterLayers: string[], public position: PointInterface) {
     }
 }

back/src/Model/Websocket/ProtobufUtils.ts

@@ -0,0 +1,55 @@
+import {PointInterface} from "./PointInterface";
+import {ItemEventMessage, PositionMessage} from "../../Messages/generated/messages_pb";
+import {ExSocketInterface} from "_Model/Websocket/ExSocketInterface";
+import Direction = PositionMessage.Direction;
+import {ItemEventMessageInterface} from "_Model/Websocket/ItemEventMessage";
+
+export class ProtobufUtils {
+
+    public static toPositionMessage(point: PointInterface): PositionMessage {
+        let direction: PositionMessage.DirectionMap[keyof PositionMessage.DirectionMap];
+        switch (point.direction) {
+            case 'up':
+                direction = Direction.UP;
+                break;
+            case 'down':
+                direction = Direction.DOWN;
+                break;
+            case 'left':
+                direction = Direction.LEFT;
+                break;
+            case 'right':
+                direction = Direction.RIGHT;
+                break;
+            default:
+                throw new Error('unexpected direction');
+        }
+
+        const position = new PositionMessage();
+        position.setX(point.x);
+        position.setY(point.y);
+        position.setMoving(point.moving);
+        position.setDirection(direction);
+
+        return position;
+    }
+
+    public static toItemEvent(itemEventMessage: ItemEventMessage): ItemEventMessageInterface {
+        return {
+            itemId: itemEventMessage.getItemid(),
+            event: itemEventMessage.getEvent(),
+            parameters: JSON.parse(itemEventMessage.getParametersjson()),
+            state: JSON.parse(itemEventMessage.getStatejson()),
+        }
+    }
+
+    public static toItemEventProtobuf(itemEvent: ItemEventMessageInterface): ItemEventMessage {
+        const itemEventMessage = new ItemEventMessage();
+        itemEventMessage.setItemid(itemEvent.itemId);
+        itemEventMessage.setEvent(itemEvent.event);
+        itemEventMessage.setParametersjson(JSON.stringify(itemEvent.parameters));
+        itemEventMessage.setStatejson(JSON.stringify(itemEvent.state));
+
+        return itemEventMessage;
+    }
+}

back/src/Model/Websocket/UserInGroupInterface.ts

@@ -1,5 +1,5 @@
 export interface UserInGroupInterface {
-    userId: string,
+    userId: number,
     name: string,
     initiator: boolean
 }

back/src/Model/Websocket/UserMovesMessage.ts

@@ -1,11 +0,0 @@
-import * as tg from "generic-type-guard";
-import {isPointInterface} from "./PointInterface";
-import {isViewport} from "./ViewportMessage";
-
-
-export const isUserMovesInterface =
-    new tg.IsInterface().withProperties({
-        position: isPointInterface,
-        viewport: isViewport,
-    }).get();
-export type UserMovesInterface = tg.GuardedType<typeof isUserMovesInterface>;

back/src/Model/Websocket/WebRtcSignalMessage.ts

@@ -7,12 +7,12 @@ export const isSignalData =
 
 export const isWebRtcSignalMessageInterface =
     new tg.IsInterface().withProperties({
-        receiverId: tg.isString,
+        receiverId: tg.isNumber,
         signal: isSignalData
     }).get();
 export const isWebRtcScreenSharingStartMessageInterface =
     new tg.IsInterface().withProperties({
-        userId: tg.isString,
+        userId: tg.isNumber,
         roomId: tg.isString
     }).get();
 export type WebRtcSignalMessageInterface = tg.GuardedType<typeof isWebRtcSignalMessageInterface>;

back/src/Model/World.ts

@@ -11,15 +11,15 @@ import {PositionNotifier} from "./PositionNotifier";
 import {ViewportInterface} from "_Model/Websocket/ViewportMessage";
 import {Movable} from "_Model/Movable";
 
-export type ConnectCallback = (user: string, group: Group) => void;
+export type ConnectCallback = (user: number, group: Group) => void;
-export type DisconnectCallback = (user: string, group: Group) => void;
+export type DisconnectCallback = (user: number, group: Group) => void;
 
 export class World {
     private readonly minDistance: number;
     private readonly groupRadius: number;
 
     // Users, sorted by ID
-    private readonly users: Map<string, User>;
+    private readonly users: Map<number, User>;
     private readonly groups: Set<Group>;
 
     private readonly connectCallback: ConnectCallback;
@@ -37,7 +37,7 @@ export class World {
                 onMoves: MovesCallback,
                 onLeaves: LeavesCallback)
     {
-        this.users = new Map<string, User>();
+        this.users = new Map<number, User>();
         this.groups = new Set<Group>();
         this.connectCallback = connectCallback;
         this.disconnectCallback = disconnectCallback;
@@ -51,14 +51,16 @@ export class World {
         return Array.from(this.groups.values());
     }
 
-    public getUsers(): Map<string, User> {
+    public getUsers(): Map<number, User> {
         return this.users;
     }
 
     public join(socket : Identificable, userPosition: PointInterface): void {
-        this.users.set(socket.userId, new User(socket.userId, userPosition, false));
+        const user = new User(socket.userId, userPosition, false, this.positionNotifier);
+        this.users.set(socket.userId, user);
         // Let's call update position to trigger the join / leave room
-        this.updatePosition(socket, userPosition);
+        //this.updatePosition(socket, userPosition);
+        this.updateUserGroup(user);
     }
 
     public leave(user : Identificable){
@@ -87,11 +89,13 @@ export class World {
             return;
         }
 
-        this.positionNotifier.updatePosition(user, userPosition, user.position);
+        user.setPosition(userPosition);
 
-        const oldGroupPosition = user.group?.getPosition();
+        this.updateUserGroup(user);
+    }
 
-        user.position = userPosition;
+    private updateUserGroup(user: User): void {
+        user.group?.updatePosition();
 
         if (user.silent) {
             return;
@@ -111,7 +115,7 @@ export class World {
                     const group: Group = new Group([
                         user,
                         closestUser
-                    ], this.connectCallback, this.disconnectCallback);
+                    ], this.connectCallback, this.disconnectCallback, this.positionNotifier);
                     this.groups.add(group);
                 }
             }
@@ -119,16 +123,11 @@ export class World {
         } else {
             // If the user is part of a group:
             //  should he leave the group?
-            const distance = World.computeDistanceBetweenPositions(user.position, user.group.getPosition());
+            const distance = World.computeDistanceBetweenPositions(user.getPosition(), user.group.getPosition());
             if (distance > this.groupRadius) {
                 this.leaveGroup(user);
             }
         }
-
-        // At the very end, if the user is part of a group, let's call the callback to update group position
-        if (typeof user.group !== 'undefined') {
-            this.positionNotifier.updatePosition(user.group, user.group.getPosition(), oldGroupPosition ? oldGroupPosition : user.group.getPosition());
-        }
     }
 
     setSilent(socket: Identificable, silent: boolean) {
@@ -147,7 +146,7 @@ export class World {
         }
         if (!silent) {
             // If we are back to life, let's trigger a position update to see if we can join some group.
-            this.updatePosition(socket, user.position);
+            this.updatePosition(socket, user.getPosition());
         }
     }
 
@@ -158,9 +157,10 @@ export class World {
      */
     private leaveGroup(user: User): void {
         const group = user.group;
-        if (typeof group === 'undefined') {
+        if (group === undefined) {
             throw new Error("The user is part of no group");
         }
+        const oldPosition = group.getPosition();
         group.leave(user);
         if (group.isEmpty()) {
             this.positionNotifier.leave(group);
@@ -170,7 +170,8 @@ export class World {
             }
             this.groups.delete(group);
         } else {
-            this.positionNotifier.updatePosition(group, group.getPosition(), group.getPosition());
+            group.updatePosition();
+            //this.positionNotifier.updatePosition(group, group.getPosition(), oldPosition);
         }
     }
 
@@ -244,7 +245,7 @@ export class World {
             if (group.isFull()) {
                 return;
             }
-            const distance = World.computeDistanceBetweenPositions(user.position, group.getPosition());
+            const distance = World.computeDistanceBetweenPositions(user.getPosition(), group.getPosition());
             if(distance <= minimumDistanceFound && distance <= this.groupRadius) {
                 minimumDistanceFound = distance;
                 matchingItem = group;
@@ -256,7 +257,9 @@ export class World {
 
     public static computeDistance(user1: User, user2: User): number
     {
-        return Math.sqrt(Math.pow(user2.position.x - user1.position.x, 2) + Math.pow(user2.position.y - user1.position.y, 2));
+        const user1Position = user1.getPosition();
+        const user2Position = user2.getPosition();
+        return Math.sqrt(Math.pow(user2Position.x - user1Position.x, 2) + Math.pow(user2Position.y - user1Position.y, 2));
     }
 
     public static computeDistanceBetweenPositions(position1: PositionInterface, position2: PositionInterface): number

back/src/Model/Zone.ts

@@ -1,6 +1,7 @@
 import {User} from "./User";
 import {PositionInterface} from "_Model/PositionInterface";
-import {Movable} from "_Model/Movable";
+import {Movable} from "./Movable";
+import {Group} from "./Group";
 
 export type EntersCallback = (thing: Movable, listener: User) => void;
 export type MovesCallback = (thing: Movable, position: PositionInterface, listener: User) => void;
@@ -10,14 +11,27 @@ export class Zone {
     private things: Set<Movable> = new Set<Movable>();
     private listeners: Set<User> = new Set<User>();
 
-    constructor(private onEnters: EntersCallback, private onMoves: MovesCallback, private onLeaves: LeavesCallback) {
+    /**
+     * @param x For debugging purpose only
+     * @param y For debugging purpose only
+     */
+    constructor(private onEnters: EntersCallback, private onMoves: MovesCallback, private onLeaves: LeavesCallback, private x: number, private y: number) {
     }
 
     /**
      * A user/thing leaves the zone
      */
     public leave(thing: Movable, newZone: Zone|null) {
-        this.things.delete(thing);
+        const result = this.things.delete(thing);
+        if (!result) {
+            if (thing instanceof User) {
+                throw new Error('Could not find user in zone '+thing.id);
+            }
+            if (thing instanceof Group) {
+                throw new Error('Could not find group '+thing.getId()+' in zone ('+this.x+','+this.y+'). Position of group: ('+thing.getPosition().x+','+thing.getPosition().y+')');
+            }
+
+        }
         this.notifyLeft(thing, newZone);
     }
 
@@ -34,13 +48,13 @@ export class Zone {
 
     public enter(thing: Movable, oldZone: Zone|null, position: PositionInterface) {
         this.things.add(thing);
-        this.notifyUserEnter(thing, oldZone, position);
+        this.notifyEnter(thing, oldZone, position);
     }
 
     /**
      * Notify listeners of this zone that this user entered
      */
-    private notifyUserEnter(thing: Movable, oldZone: Zone|null, position: PositionInterface) {
+    private notifyEnter(thing: Movable, oldZone: Zone|null, position: PositionInterface) {
         for (const listener of this.listeners) {
             if (listener === thing) {
                 continue;
@@ -56,8 +70,7 @@ export class Zone {
     public move(thing: Movable, position: PositionInterface) {
         if (!this.things.has(thing)) {
             this.things.add(thing);
-            const foo = this.things;
+            this.notifyEnter(thing, null, position);
-            this.notifyUserEnter(thing, null, position);
             return;
         }
 

back/tests/PositionNotifierTest.ts

@@ -9,14 +9,6 @@ import {Zone} from "_Model/Zone";
 import {Movable} from "_Model/Movable";
 import {PositionInterface} from "_Model/PositionInterface";
 
-function move(user: User, x: number, y: number, positionNotifier: PositionNotifier): void {
-    positionNotifier.updatePosition(user, {
-        x,
-        y
-    }, user.position);
-    user.position.x = x;
-    user.position.y = y;
-}
 
 describe("PositionNotifier", () => {
     it("should receive notifications when player moves", () => {
@@ -32,19 +24,19 @@ describe("PositionNotifier", () => {
             leaveTriggered = true;
         });
 
-        const user1 = new User("1", {
+        const user1 = new User(1, {
             x: 500,
             y: 500,
             moving: false,
             direction: 'down'
-        }, false);
+        }, false, positionNotifier);
 
-        const user2 = new User("2", {
+        const user2 = new User(2, {
             x: -9999,
             y: -9999,
             moving: false,
             direction: 'down'
-        }, false);
+        }, false, positionNotifier);
 
         positionNotifier.setViewport(user1, {
             left: 200,
@@ -53,21 +45,21 @@ describe("PositionNotifier", () => {
             bottom: 500
         });
 
-        move(user2, 500, 500, positionNotifier);
+        user2.setPosition({x: 500, y: 500, direction: 'down', moving: false});
 
         expect(enterTriggered).toBe(true);
         expect(moveTriggered).toBe(false);
         enterTriggered = false;
 
         // Move inside the zone
-        move(user2, 501, 500, positionNotifier);
+        user2.setPosition({x:501, y:500, direction: 'down', moving: false});
 
         expect(enterTriggered).toBe(false);
         expect(moveTriggered).toBe(true);
         moveTriggered = false;
 
         // Move out of the zone in a zone that we don't track
-        move(user2, 901, 500, positionNotifier);
+        user2.setPosition({x: 901, y: 500, direction: 'down', moving: false});
 
         expect(enterTriggered).toBe(false);
         expect(moveTriggered).toBe(false);
@@ -75,14 +67,14 @@ describe("PositionNotifier", () => {
         leaveTriggered = false;
 
         // Move back in
-        move(user2, 500, 500, positionNotifier);
+        user2.setPosition({x: 500, y: 500, direction: 'down', moving: false});
         expect(enterTriggered).toBe(true);
         expect(moveTriggered).toBe(false);
         expect(leaveTriggered).toBe(false);
         enterTriggered = false;
 
         // Move out of the zone in a zone that we do track
-        move(user2, 200, 500, positionNotifier);
+        user2.setPosition({x: 200, y: 500, direction: 'down', moving: false});
         expect(enterTriggered).toBe(false);
         expect(moveTriggered).toBe(true);
         expect(leaveTriggered).toBe(false);
@@ -110,19 +102,19 @@ describe("PositionNotifier", () => {
             leaveTriggered = true;
         });
 
-        const user1 = new User("1", {
+        const user1 = new User(1, {
             x: 500,
             y: 500,
             moving: false,
             direction: 'down'
-        }, false);
+        }, false, positionNotifier);
 
-        const user2 = new User("2", {
+        const user2 = new User(2, {
-            x: -9999,
+            x: 0,
-            y: -9999,
+            y: 0,
             moving: false,
             direction: 'down'
-        }, false);
+        }, false, positionNotifier);
 
         let newUsers = positionNotifier.setViewport(user1, {
             left: 200,
@@ -131,14 +123,16 @@ describe("PositionNotifier", () => {
             bottom: 500
         });
 
-        expect(newUsers.length).toBe(0);
+        expect(newUsers.length).toBe(2);
-
-        move(user2, 500, 500, positionNotifier);
-
         expect(enterTriggered).toBe(true);
-        expect(moveTriggered).toBe(false);
         enterTriggered = false;
 
+        user2.setPosition({x: 500, y: 500, direction: 'down', moving: false});
+
+        expect(enterTriggered).toBe(false);
+        expect(moveTriggered).toBe(true);
+        moveTriggered = false;
+
         // Move the viewport but the user stays inside.
         positionNotifier.setViewport(user1, {
             left: 201,
@@ -176,6 +170,6 @@ describe("PositionNotifier", () => {
         expect(moveTriggered).toBe(false);
         expect(leaveTriggered).toBe(false);
         enterTriggered = false;
-        expect(newUsers.length).toBe(1);
+        expect(newUsers.length).toBe(2);
     });
 })

back/tests/WorldTest.ts

@@ -6,55 +6,55 @@ import { Group } from "../src/Model/Group";
 describe("World", () => {
     it("should connect user1 and user2", () => {
         let connectCalledNumber: number = 0;
-        const connect: ConnectCallback = (user: string, group: Group): void => {
+        const connect: ConnectCallback = (user: number, group: Group): void => {
             connectCalledNumber++;
         }
-        const disconnect: DisconnectCallback = (user: string, group: Group): void => {
+        const disconnect: DisconnectCallback = (user: number, group: Group): void => {
 
         }
 
         const world = new World(connect, disconnect, 160, 160, () => {}, () => {}, () => {});
 
-        world.join({ userId: "foo" }, new Point(100, 100));
+        world.join({ userId: 1 }, new Point(100, 100));
 
-        world.join({ userId: "bar" }, new Point(500, 100));
+        world.join({ userId: 2 }, new Point(500, 100));
 
-        world.updatePosition({ userId: "bar" }, new Point(261, 100));
+        world.updatePosition({ userId: 2 }, new Point(261, 100));
 
         expect(connectCalledNumber).toBe(0);
 
-        world.updatePosition({ userId: "bar" }, new Point(101, 100));
+        world.updatePosition({ userId: 2 }, new Point(101, 100));
 
         expect(connectCalledNumber).toBe(2);
 
-        world.updatePosition({ userId: "bar" }, new Point(102, 100));
+        world.updatePosition({ userId: 2 }, new Point(102, 100));
         expect(connectCalledNumber).toBe(2);
     });
 
     it("should connect 3 users", () => {
         let connectCalled: boolean = false;
-        const connect: ConnectCallback = (user: string, group: Group): void => {
+        const connect: ConnectCallback = (user: number, group: Group): void => {
             connectCalled = true;
         }
-        const disconnect: DisconnectCallback = (user: string, group: Group): void => {
+        const disconnect: DisconnectCallback = (user: number, group: Group): void => {
 
         }
 
         const world = new World(connect, disconnect, 160, 160, () => {}, () => {}, () => {});
 
-        world.join({ userId: "foo" }, new Point(100, 100));
+        world.join({ userId: 1 }, new Point(100, 100));
 
-        world.join({ userId: "bar" }, new Point(200, 100));
+        world.join({ userId: 2 }, new Point(200, 100));
 
         expect(connectCalled).toBe(true);
         connectCalled = false;
 
         // baz joins at the outer limit of the group
-        world.join({ userId: "baz" }, new Point(311, 100));
+        world.join({ userId: 3 }, new Point(311, 100));
 
         expect(connectCalled).toBe(false);
 
-        world.updatePosition({ userId: "baz" }, new Point(309, 100));
+        world.updatePosition({ userId: 3 }, new Point(309, 100));
 
         expect(connectCalled).toBe(true);
     });
@@ -62,27 +62,27 @@ describe("World", () => {
     it("should disconnect user1 and user2", () => {
         let connectCalled: boolean = false;
         let disconnectCallNumber: number = 0;
-        const connect: ConnectCallback = (user: string, group: Group): void => {
+        const connect: ConnectCallback = (user: number, group: Group): void => {
             connectCalled = true;
         }
-        const disconnect: DisconnectCallback = (user: string, group: Group): void => {
+        const disconnect: DisconnectCallback = (user: number, group: Group): void => {
             disconnectCallNumber++;
         }
 
         const world = new World(connect, disconnect, 160, 160, () => {}, () => {}, () => {});
 
-        world.join({ userId: "foo" }, new Point(100, 100));
+        world.join({ userId: 1 }, new Point(100, 100));
 
-        world.join({ userId: "bar" }, new Point(259, 100));
+        world.join({ userId: 2 }, new Point(259, 100));
 
         expect(connectCalled).toBe(true);
         expect(disconnectCallNumber).toBe(0);
 
-        world.updatePosition({ userId: "bar" }, new Point(100+160+160+1, 100));
+        world.updatePosition({ userId: 2 }, new Point(100+160+160+1, 100));
 
         expect(disconnectCallNumber).toBe(2);
 
-        world.updatePosition({ userId: "bar" }, new Point(262, 100));
+        world.updatePosition({ userId: 2 }, new Point(262, 100));
         expect(disconnectCallNumber).toBe(2);
     });
 

back/tsconfig.json

@@ -7,7 +7,7 @@
     "downlevelIteration": true,
     "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
     // "lib": [],                             /* Specify library files to be included in the compilation. */
-    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    "allowJs": true,                          /* Allow javascript files to be compiled. */
     // "checkJs": true,                       /* Report errors in .js files. */
     // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
     // "declaration": true,                   /* Generates corresponding '.d.ts' file. */

back/yarn.lock

@@ -27,6 +27,11 @@
     "@types/connect" "*"
     "@types/node" "*"
 
+"@types/circular-json@^0.4.0":
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/@types/circular-json/-/circular-json-0.4.0.tgz#7401f7e218cfe87ad4c43690da5658b9acaf51be"
+  integrity sha512-7+kYB7x5a7nFWW1YPBh3KxhwKfiaI4PbZ1RvzBU91LZy7lWJO822CI+pqzSre/DZ7KsCuMKdHnLHHFu8AyXbQg==
+
 "@types/color-name@^1.1.1":
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/@types/color-name/-/color-name-1.1.1.tgz#1c1261bbeaa10a8055bbc5d8ab84b7b2afc846a0"
@@ -57,6 +62,11 @@
     "@types/qs" "*"
     "@types/serve-static" "*"
 
+"@types/google-protobuf@^3.7.3":
+  version "3.7.3"
+  resolved "https://registry.yarnpkg.com/@types/google-protobuf/-/google-protobuf-3.7.3.tgz#429512e541bbd777f2c867692e6335ee08d1f6d4"
+  integrity sha512-FRwj40euE2bYkG+0X5w2nEA8yAzgJRcEa7RBd0Gsdkb9/tPM2pctVVAvnOUTbcXo2VmIHPo0Ae94Gl9vRHfKzg==
+
 "@types/http-status-codes@^1.2.0":
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/@types/http-status-codes/-/http-status-codes-1.2.0.tgz#6e5244835aaf7164dd306f1d4d2dfdbb2159d909"
@@ -354,6 +364,11 @@ chardet@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
 
+circular-json@^0.5.9:
+  version "0.5.9"
+  resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.5.9.tgz#932763ae88f4f7dead7a0d09c8a51a4743a53b1d"
+  integrity sha512-4ivwqHpIFJZBuhN3g/pEcdbnGUywkBblloGbkglyloVjjR3uT6tieI89MVOfbP2tHX5sgb01FuLgAOzebNlJNQ==
+
 cli-cursor@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-3.1.0.tgz#264305a7ae490d1d03bf0c9ba7c925d1753af307"
@@ -834,6 +849,11 @@ globals@^12.1.0:
   dependencies:
     type-fest "^0.8.1"
 
+google-protobuf@^3.13.0:
+  version "3.13.0"
+  resolved "https://registry.yarnpkg.com/google-protobuf/-/google-protobuf-3.13.0.tgz#909c5983d75dd6101ed57c79e0528d000cdc3251"
+  integrity sha512-ZIf3qfLFayVrPvAjeKKxO5FRF1/NwRxt6Dko+fWEMuHwHbZx8/fcaAao9b0wCM6kr8qeg2te8XTpyuvKuD9aKw==
+
 graceful-fs@^4.1.2:
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.3.tgz#4a12ff1b60376ef09862c2093edd908328be8423"

benchmark/.gitignore

@@ -0,0 +1,3 @@
+/node_modules/
+/artillery_output.html
+/artillery_output.json

benchmark/artillery_multi_core.sh

@@ -1,17 +0,0 @@
-#!/bin/bash
-
-npm run start &
-pid1=$!
-npm run start:nooutput &
-pid2=$!
-npm run start:nooutput &
-pid3=$!
-npm run start:nooutput &
-pid4=$!
-
-wait $pid1
-wait $pid2
-wait $pid3
-wait $pid4
-
-

benchmark/benchmark_multi_core.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+yarn run start &
+pid1=$!
+yarn run start &
+pid2=$!
+yarn run start &
+pid3=$!
+yarn run start &
+pid4=$!
+
+wait $pid1
+wait $pid2
+wait $pid3
+wait $pid4

benchmark/index.ts

@@ -0,0 +1,46 @@
+import {Connection} from "../front/src/Connection";
+
+function sleep(ms) {
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function startOneUser(): Promise<void> {
+    const connection = await Connection.createConnection('foo', ['male3']);
+
+    await connection.joinARoom('global__maps.workadventure.localhost/Floor0/floor0', 783, 170, 'down', false, {
+        top: 0,
+        bottom: 200,
+        left: 500,
+        right: 800
+    });
+    console.log(connection.getUserId());
+
+    let angle = Math.random() * Math.PI * 2;
+
+    for (let i = 0; i < 100; i++) {
+        const x = Math.floor(320 + 1472/2 * (1 + Math.sin(angle)));
+        const y = Math.floor(200 + 1090/2 * (1 + Math.cos(angle)));
+
+        connection.sharePosition(x, y, 'down', true, {
+            top: y - 200,
+            bottom: y + 200,
+            left: x - 320,
+            right: x + 320
+        })
+
+        angle += 0.05;
+
+        await sleep(200);
+    }
+
+    await sleep(10000);
+    connection.closeConnection();
+}
+
+(async () => {
+    for (let userNo = 0; userNo < 40; userNo++) {
+        startOneUser();
+        // Wait 0.5s between adding users
+        await sleep(500);
+    }
+})();

benchmark/package.json

@@ -3,8 +3,7 @@
   "version": "1.0.0",
   "description": "Load testing for WorkAdventure",
   "scripts": {
-    "start": "artillery run socketio-load-test.yaml -o artillery_output.json && artillery report --output artillery_output.html artillery_output.json",
+    "start": "ts-node ./index.ts"
-    "start:nooutput": "artillery run socketio-load-test.yaml"
   },
   "contributors": [
     {
@@ -22,6 +21,11 @@
   ],
   "license": "SEE LICENSE IN LICENSE.txt",
   "dependencies": {
-    "artillery": "^1.6.1"
+    "socket.io-client": "^2.3.0",
+    "ts-node-dev": "^1.0.0-pre.62",
+    "typescript": "^4.0.2"
+  },
+  "devDependencies": {
+    "@types/socket.io-client": "^1.4.33"
   }
 }

benchmark/socketio-load-test.yaml

@@ -1,54 +0,0 @@
-config:
-  target: "http://api.workadventure.localhost/"
-  socketio:
-    transports: ["websocket"]
-    query:
-      token: "test"
-  phases:
-    - duration: 20
-      arrivalRate: 2
-  processor: "./socketioLoadTest.js"
-scenarios:
-  - name: "Connects and moves player for 20 seconds"
-    weight: 90
-    engine: "socketio"
-    flow:
-      - emit:
-          channel: "set-player-details"
-          data:
-            name: 'TEST'
-            characterLayers: ['male3']
-      - think: 1
-      - emit:
-          channel: "join-room"
-          data:
-            roomId: 'global__api.workadventure.localhost/map/files/Floor0/floor0'
-            position:
-              x: 783
-              y: 170
-              direction: 'down'
-              moving: false
-            viewport:
-              left: 500
-              top: 0
-              right: 800
-              bottom: 200
-      - think: 1
-      - loop:
-        - function: "setYRandom"
-        - emit:
-            channel: "user-position"
-            data:
-              position:
-                x: "{{ x }}"
-                y: "{{ y }}"
-                direction: 'down'
-                moving: false
-              viewport:
-                left: "{{ left }}"
-                top: "{{ top }}"
-                right: "{{ right }}"
-                bottom: "{{ bottom }}"
-        - think: 0.2
-        count: 100
-      - think: 10

benchmark/socketioLoadTest.js

@@ -1,20 +0,0 @@
-'use strict';
-
-module.exports = {
-    setYRandom
-};
-
-function setYRandom(context, events, done) {
-    if (context.angle === undefined) {
-        context.angle = Math.random() * Math.PI * 2;
-    }
-    context.angle += 0.05;
-
-    context.vars.x = 320 + 1472/2 * (1 + Math.sin(context.angle));
-    context.vars.y = 200 + 1090/2 * (1 + Math.cos(context.angle));
-    context.vars.left = context.vars.x - 320;
-    context.vars.top = context.vars.y - 200;
-    context.vars.right = context.vars.x + 320;
-    context.vars.bottom = context.vars.y + 200;
-    return done();
-}

benchmark/yarn.lock

@@ -0,0 +1,693 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@types/socket.io-client@^1.4.33":
+  version "1.4.33"
+  resolved "https://registry.yarnpkg.com/@types/socket.io-client/-/socket.io-client-1.4.33.tgz#8e705b9b3f7fba6cb329d27cd2eda222812adbf1"
+
+"@types/strip-bom@^3.0.0":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/strip-bom/-/strip-bom-3.0.0.tgz#14a8ec3956c2e81edb7520790aecf21c290aebd2"
+
+"@types/strip-json-comments@0.0.30":
+  version "0.0.30"
+  resolved "https://registry.yarnpkg.com/@types/strip-json-comments/-/strip-json-comments-0.0.30.tgz#9aa30c04db212a9a0649d6ae6fd50accc40748a1"
+
+after@0.8.2:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/after/-/after-0.8.2.tgz#fedb394f9f0e02aa9768e702bda23b505fae7e1f"
+
+anymatch@~3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-3.1.1.tgz#c55ecf02185e2469259399310c173ce31233b142"
+  dependencies:
+    normalize-path "^3.0.0"
+    picomatch "^2.0.4"
+
+arg@^4.1.0:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/arg/-/arg-4.1.3.tgz#269fc7ad5b8e42cb63c896d5666017261c144089"
+
+array-find-index@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/array-find-index/-/array-find-index-1.0.2.tgz#df010aa1287e164bbda6f9723b0a96a1ec4187a1"
+
+arraybuffer.slice@~0.0.7:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz#3bbc4275dd584cc1b10809b89d4e8b63a69e7675"
+
+async-limiter@~1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.1.tgz#dd379e94f0db8310b08291f9d64c3209766617fd"
+
+backo2@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/backo2/-/backo2-1.0.2.tgz#31ab1ac8b129363463e35b3ebb69f4dfcfba7947"
+
+balanced-match@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+
+base64-arraybuffer@0.1.5:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz#73926771923b5a19747ad666aa5cd4bf9c6e9ce8"
+
+better-assert@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/better-assert/-/better-assert-1.0.2.tgz#40866b9e1b9e0b55b481894311e68faffaebc522"
+  dependencies:
+    callsite "1.0.0"
+
+binary-extensions@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-2.1.0.tgz#30fa40c9e7fe07dbc895678cd287024dea241dd9"
+
+blob@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/blob/-/blob-0.0.5.tgz#d680eeef25f8cd91ad533f5b01eed48e64caf683"
+
+brace-expansion@^1.1.7:
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+braces@~3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.2.tgz#3454e1a462ee8d599e236df336cd9ea4f8afe107"
+  dependencies:
+    fill-range "^7.0.1"
+
+buffer-from@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
+
+callsite@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/callsite/-/callsite-1.0.0.tgz#280398e5d664bd74038b6f0905153e6e8af1bc20"
+
+camelcase-keys@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/camelcase-keys/-/camelcase-keys-2.1.0.tgz#308beeaffdf28119051efa1d932213c91b8f92e7"
+  dependencies:
+    camelcase "^2.0.0"
+    map-obj "^1.0.0"
+
+camelcase@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-2.1.1.tgz#7c1d16d679a1bbe59ca02cacecfb011e201f5a1f"
+
+chokidar@^3.4.0:
+  version "3.4.2"
+  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.4.2.tgz#38dc8e658dec3809741eb3ef7bb0a47fe424232d"
+  dependencies:
+    anymatch "~3.1.1"
+    braces "~3.0.2"
+    glob-parent "~5.1.0"
+    is-binary-path "~2.1.0"
+    is-glob "~4.0.1"
+    normalize-path "~3.0.0"
+    readdirp "~3.4.0"
+  optionalDependencies:
+    fsevents "~2.1.2"
+
+component-bind@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/component-bind/-/component-bind-1.0.0.tgz#00c608ab7dcd93897c0009651b1d3a8e1e73bbd1"
+
+component-emitter@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
+
+component-emitter@~1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0"
+
+component-inherit@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/component-inherit/-/component-inherit-0.0.3.tgz#645fc4adf58b72b649d5cae65135619db26ff143"
+
+concat-map@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+
+currently-unhandled@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/currently-unhandled/-/currently-unhandled-0.4.1.tgz#988df33feab191ef799a61369dd76c17adf957ea"
+  dependencies:
+    array-find-index "^1.0.1"
+
+dateformat@~1.0.4-1.2.3:
+  version "1.0.12"
+  resolved "https://registry.yarnpkg.com/dateformat/-/dateformat-1.0.12.tgz#9f124b67594c937ff706932e4a642cca8dbbfee9"
+  dependencies:
+    get-stdin "^4.0.1"
+    meow "^3.3.0"
+
+debug@~3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  dependencies:
+    ms "2.0.0"
+
+debug@~4.1.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  dependencies:
+    ms "^2.1.1"
+
+decamelize@^1.1.2:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
+
+diff@^4.0.1:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
+
+dynamic-dedupe@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/dynamic-dedupe/-/dynamic-dedupe-0.3.0.tgz#06e44c223f5e4e94d78ef9db23a6515ce2f962a1"
+  dependencies:
+    xtend "^4.0.0"
+
+engine.io-client@~3.4.0:
+  version "3.4.3"
+  resolved "https://registry.yarnpkg.com/engine.io-client/-/engine.io-client-3.4.3.tgz#192d09865403e3097e3575ebfeb3861c4d01a66c"
+  dependencies:
+    component-emitter "~1.3.0"
+    component-inherit "0.0.3"
+    debug "~4.1.0"
+    engine.io-parser "~2.2.0"
+    has-cors "1.1.0"
+    indexof "0.0.1"
+    parseqs "0.0.5"
+    parseuri "0.0.5"
+    ws "~6.1.0"
+    xmlhttprequest-ssl "~1.5.4"
+    yeast "0.1.2"
+
+engine.io-parser@~2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/engine.io-parser/-/engine.io-parser-2.2.0.tgz#312c4894f57d52a02b420868da7b5c1c84af80ed"
+  dependencies:
+    after "0.8.2"
+    arraybuffer.slice "~0.0.7"
+    base64-arraybuffer "0.1.5"
+    blob "0.0.5"
+    has-binary2 "~1.0.2"
+
+error-ex@^1.2.0:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
+  dependencies:
+    is-arrayish "^0.2.1"
+
+fill-range@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-7.0.1.tgz#1919a6a7c75fe38b2c7c77e5198535da9acdda40"
+  dependencies:
+    to-regex-range "^5.0.1"
+
+find-up@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-1.1.2.tgz#6b2e9822b1a2ce0a60ab64d610eccad53cb24d0f"
+  dependencies:
+    path-exists "^2.0.0"
+    pinkie-promise "^2.0.0"
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+
+fsevents@~2.1.2:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.1.3.tgz#fb738703ae8d2f9fe900c33836ddebee8b97f23e"
+
+get-stdin@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-4.0.1.tgz#b968c6b0a04384324902e8bf1a5df32579a450fe"
+
+glob-parent@~5.1.0:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-5.1.1.tgz#b6c1ef417c4e5663ea498f1c45afac6916bbc229"
+  dependencies:
+    is-glob "^4.0.1"
+
+glob@^7.1.3:
+  version "7.1.6"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+graceful-fs@^4.1.2:
+  version "4.2.4"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.4.tgz#2256bde14d3632958c465ebc96dc467ca07a29fb"
+
+has-binary2@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/has-binary2/-/has-binary2-1.0.3.tgz#7776ac627f3ea77250cfc332dab7ddf5e4f5d11d"
+  dependencies:
+    isarray "2.0.1"
+
+has-cors@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/has-cors/-/has-cors-1.1.0.tgz#5e474793f7ea9843d1bb99c23eef49ff126fff39"
+
+hosted-git-info@^2.1.4:
+  version "2.8.8"
+  resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.8.tgz#7539bd4bc1e0e0a895815a2e0262420b12858488"
+
+indent-string@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/indent-string/-/indent-string-2.1.0.tgz#8e2d48348742121b4a8218b7a137e9a52049dc80"
+  dependencies:
+    repeating "^2.0.0"
+
+indexof@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/indexof/-/indexof-0.0.1.tgz#82dc336d232b9062179d05ab3293a66059fd435d"
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
+
+is-arrayish@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
+
+is-binary-path@~2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-binary-path/-/is-binary-path-2.1.0.tgz#ea1f7f3b80f064236e83470f86c09c254fb45b09"
+  dependencies:
+    binary-extensions "^2.0.0"
+
+is-extglob@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
+
+is-finite@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-finite/-/is-finite-1.1.0.tgz#904135c77fb42c0641d6aa1bcdbc4daa8da082f3"
+
+is-glob@^4.0.1, is-glob@~4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.1.tgz#7567dbe9f2f5e2467bc77ab83c4a29482407a5dc"
+  dependencies:
+    is-extglob "^2.1.1"
+
+is-number@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/is-number/-/is-number-7.0.0.tgz#7535345b896734d5f80c4d06c50955527a14f12b"
+
+is-utf8@^0.2.0:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/is-utf8/-/is-utf8-0.2.1.tgz#4b0da1442104d1b336340e80797e865cf39f7d72"
+
+isarray@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-2.0.1.tgz#a37d94ed9cda2d59865c9f76fe596ee1f338741e"
+
+load-json-file@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
+  dependencies:
+    graceful-fs "^4.1.2"
+    parse-json "^2.2.0"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+    strip-bom "^2.0.0"
+
+loud-rejection@^1.0.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/loud-rejection/-/loud-rejection-1.6.0.tgz#5b46f80147edee578870f086d04821cf998e551f"
+  dependencies:
+    currently-unhandled "^0.4.1"
+    signal-exit "^3.0.0"
+
+make-error@^1.1.1:
+  version "1.3.6"
+  resolved "https://registry.yarnpkg.com/make-error/-/make-error-1.3.6.tgz#2eb2e37ea9b67c4891f684a1394799af484cf7a2"
+
+map-obj@^1.0.0, map-obj@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/map-obj/-/map-obj-1.0.1.tgz#d933ceb9205d82bdcf4886f6742bdc2b4dea146d"
+
+meow@^3.3.0:
+  version "3.7.0"
+  resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
+  dependencies:
+    camelcase-keys "^2.0.0"
+    decamelize "^1.1.2"
+    loud-rejection "^1.0.0"
+    map-obj "^1.0.1"
+    minimist "^1.1.3"
+    normalize-package-data "^2.3.4"
+    object-assign "^4.0.1"
+    read-pkg-up "^1.0.1"
+    redent "^1.0.0"
+    trim-newlines "^1.0.0"
+
+minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  dependencies:
+    brace-expansion "^1.1.7"
+
+minimist@^1.1.3, minimist@^1.2.5:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
+
+mkdirp@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+
+ms@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+
+normalize-package-data@^2.3.2, normalize-package-data@^2.3.4:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.5.0.tgz#e66db1838b200c1dfc233225d12cb36520e234a8"
+  dependencies:
+    hosted-git-info "^2.1.4"
+    resolve "^1.10.0"
+    semver "2 || 3 || 4 || 5"
+    validate-npm-package-license "^3.0.1"
+
+normalize-path@^3.0.0, normalize-path@~3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
+
+object-assign@^4.0.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
+
+object-component@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/object-component/-/object-component-0.0.3.tgz#f0c69aa50efc95b866c186f400a33769cb2f1291"
+
+once@^1.3.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  dependencies:
+    wrappy "1"
+
+parse-json@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-2.2.0.tgz#f480f40434ef80741f8469099f8dea18f55a4dc9"
+  dependencies:
+    error-ex "^1.2.0"
+
+parseqs@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseqs/-/parseqs-0.0.5.tgz#d5208a3738e46766e291ba2ea173684921a8b89d"
+  dependencies:
+    better-assert "~1.0.0"
+
+parseuri@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseuri/-/parseuri-0.0.5.tgz#80204a50d4dbb779bfdc6ebe2778d90e4bce320a"
+  dependencies:
+    better-assert "~1.0.0"
+
+path-exists@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-2.1.0.tgz#0feb6c64f0fc518d9a754dd5efb62c7022761f4b"
+  dependencies:
+    pinkie-promise "^2.0.0"
+
+path-is-absolute@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+
+path-parse@^1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
+
+path-type@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/path-type/-/path-type-1.1.0.tgz#59c44f7ee491da704da415da5a4070ba4f8fe441"
+  dependencies:
+    graceful-fs "^4.1.2"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+
+picomatch@^2.0.4, picomatch@^2.2.1:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
+
+pify@^2.0.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
+
+pinkie-promise@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/pinkie-promise/-/pinkie-promise-2.0.1.tgz#2135d6dfa7a358c069ac9b178776288228450ffa"
+  dependencies:
+    pinkie "^2.0.0"
+
+pinkie@^2.0.0:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
+
+read-pkg-up@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-1.0.1.tgz#9d63c13276c065918d57f002a57f40a1b643fb02"
+  dependencies:
+    find-up "^1.0.0"
+    read-pkg "^1.0.0"
+
+read-pkg@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-1.1.0.tgz#f5ffaa5ecd29cb31c0474bca7d756b6bb29e3f28"
+  dependencies:
+    load-json-file "^1.0.0"
+    normalize-package-data "^2.3.2"
+    path-type "^1.0.0"
+
+readdirp@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-3.4.0.tgz#9fdccdf9e9155805449221ac645e8303ab5b9ada"
+  dependencies:
+    picomatch "^2.2.1"
+
+redent@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/redent/-/redent-1.0.0.tgz#cf916ab1fd5f1f16dfb20822dd6ec7f730c2afde"
+  dependencies:
+    indent-string "^2.1.0"
+    strip-indent "^1.0.1"
+
+repeating@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/repeating/-/repeating-2.0.1.tgz#5214c53a926d3552707527fbab415dbc08d06dda"
+  dependencies:
+    is-finite "^1.0.0"
+
+resolve@^1.0.0, resolve@^1.10.0:
+  version "1.17.0"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.17.0.tgz#b25941b54968231cc2d1bb76a79cb7f2c0bf8444"
+  dependencies:
+    path-parse "^1.0.6"
+
+rimraf@^2.6.1:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.7.1.tgz#35797f13a7fdadc566142c29d4f07ccad483e3ec"
+  dependencies:
+    glob "^7.1.3"
+
+"semver@2 || 3 || 4 || 5":
+  version "5.7.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
+
+signal-exit@^3.0.0:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.3.tgz#a1410c2edd8f077b08b4e253c8eacfcaf057461c"
+
+socket.io-client@^2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.3.0.tgz#14d5ba2e00b9bcd145ae443ab96b3f86cbcc1bb4"
+  dependencies:
+    backo2 "1.0.2"
+    base64-arraybuffer "0.1.5"
+    component-bind "1.0.0"
+    component-emitter "1.2.1"
+    debug "~4.1.0"
+    engine.io-client "~3.4.0"
+    has-binary2 "~1.0.2"
+    has-cors "1.1.0"
+    indexof "0.0.1"
+    object-component "0.0.3"
+    parseqs "0.0.5"
+    parseuri "0.0.5"
+    socket.io-parser "~3.3.0"
+    to-array "0.1.4"
+
+socket.io-parser@~3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/socket.io-parser/-/socket.io-parser-3.3.0.tgz#2b52a96a509fdf31440ba40fed6094c7d4f1262f"
+  dependencies:
+    component-emitter "1.2.1"
+    debug "~3.1.0"
+    isarray "2.0.1"
+
+source-map-support@^0.5.12, source-map-support@^0.5.17:
+  version "0.5.19"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
+source-map@^0.6.0:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+
+spdx-correct@^3.0.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/spdx-correct/-/spdx-correct-3.1.1.tgz#dece81ac9c1e6713e5f7d1b6f17d468fa53d89a9"
+  dependencies:
+    spdx-expression-parse "^3.0.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-exceptions@^2.1.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/spdx-exceptions/-/spdx-exceptions-2.3.0.tgz#3f28ce1a77a00372683eade4a433183527a2163d"
+
+spdx-expression-parse@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/spdx-expression-parse/-/spdx-expression-parse-3.0.1.tgz#cf70f50482eefdc98e3ce0a6833e4a53ceeba679"
+  dependencies:
+    spdx-exceptions "^2.1.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-license-ids@^3.0.0:
+  version "3.0.6"
+  resolved "https://registry.yarnpkg.com/spdx-license-ids/-/spdx-license-ids-3.0.6.tgz#c80757383c28abf7296744998cbc106ae8b854ce"
+
+strip-bom@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-2.0.0.tgz#6219a85616520491f35788bdbf1447a99c7e6b0e"
+  dependencies:
+    is-utf8 "^0.2.0"
+
+strip-bom@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-3.0.0.tgz#2334c18e9c759f7bdd56fdef7e9ae3d588e68ed3"
+
+strip-indent@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/strip-indent/-/strip-indent-1.0.1.tgz#0c7962a6adefa7bbd4ac366460a638552ae1a0a2"
+  dependencies:
+    get-stdin "^4.0.1"
+
+strip-json-comments@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
+
+to-array@0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/to-array/-/to-array-0.1.4.tgz#17e6c11f73dd4f3d74cda7a4ff3238e9ad9bf890"
+
+to-regex-range@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/to-regex-range/-/to-regex-range-5.0.1.tgz#1648c44aae7c8d988a326018ed72f5b4dd0392e4"
+  dependencies:
+    is-number "^7.0.0"
+
+tree-kill@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.2.2.tgz#4ca09a9092c88b73a7cdc5e8a01b507b0790a0cc"
+
+trim-newlines@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/trim-newlines/-/trim-newlines-1.0.0.tgz#5887966bb582a4503a41eb524f7d35011815a613"
+
+ts-node-dev@^1.0.0-pre.62:
+  version "1.0.0-pre.62"
+  resolved "https://registry.yarnpkg.com/ts-node-dev/-/ts-node-dev-1.0.0-pre.62.tgz#835644c43669b659a880379b9d06df86cef665ad"
+  dependencies:
+    chokidar "^3.4.0"
+    dateformat "~1.0.4-1.2.3"
+    dynamic-dedupe "^0.3.0"
+    minimist "^1.2.5"
+    mkdirp "^1.0.4"
+    resolve "^1.0.0"
+    rimraf "^2.6.1"
+    source-map-support "^0.5.12"
+    tree-kill "^1.2.2"
+    ts-node "^8.10.2"
+    tsconfig "^7.0.0"
+
+ts-node@^8.10.2:
+  version "8.10.2"
+  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-8.10.2.tgz#eee03764633b1234ddd37f8db9ec10b75ec7fb8d"
+  dependencies:
+    arg "^4.1.0"
+    diff "^4.0.1"
+    make-error "^1.1.1"
+    source-map-support "^0.5.17"
+    yn "3.1.1"
+
+tsconfig@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/tsconfig/-/tsconfig-7.0.0.tgz#84538875a4dc216e5c4a5432b3a4dec3d54e91b7"
+  dependencies:
+    "@types/strip-bom" "^3.0.0"
+    "@types/strip-json-comments" "0.0.30"
+    strip-bom "^3.0.0"
+    strip-json-comments "^2.0.0"
+
+typescript@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.2.tgz#7ea7c88777c723c681e33bf7988be5d008d05ac2"
+
+validate-npm-package-license@^3.0.1:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz#fc91f6b9c7ba15c857f4cb2c5defeec39d4f410a"
+  dependencies:
+    spdx-correct "^3.0.0"
+    spdx-expression-parse "^3.0.0"
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+
+ws@~6.1.0:
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-6.1.4.tgz#5b5c8800afab925e94ccb29d153c8d02c1776ef9"
+  dependencies:
+    async-limiter "~1.0.0"
+
+xmlhttprequest-ssl@~1.5.4:
+  version "1.5.5"
+  resolved "https://registry.yarnpkg.com/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz#c2876b06168aadc40e57d97e81191ac8f4398b3e"
+
+xtend@^4.0.0:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
+
+yeast@0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/yeast/-/yeast-0.1.2.tgz#008e06d8094320c372dbc2f8ed76a0ca6c8ac419"
+
+yn@3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/yn/-/yn-3.1.1.tgz#1e87401a09d767c1d5eab26a6e4c185182d2eb50"

docker-compose.yaml

@@ -73,6 +73,7 @@ services:
       STARTUP_COMMAND_1: yarn install
       SECRET_KEY: yourSecretKey
       ALLOW_ARTILLERY: "true"
+      ADMIN_API_TOKEN: "$ADMIN_API_TOKEN"
     volumes:
       - ./back:/usr/src/app
     labels:
@@ -101,3 +102,13 @@ services:
       - "traefik.http.routers.website-ssl.entryPoints=websecure"
       - "traefik.http.routers.website-ssl.tls=true"
       - "traefik.http.routers.website-ssl.service=website"
+
+  messages:
+    image: thecodingmachine/workadventure-back-base:latest
+    environment:
+      STARTUP_COMMAND_1: yarn install
+      STARTUP_COMMAND_2: yarn run proto:watch
+    volumes:
+      - ./messages:/usr/src/app
+      - ./back:/usr/src/back
+      - ./front:/usr/src/front

front/Dockerfile

@@ -1,7 +1,13 @@
+FROM thecodingmachine/workadventure-back-base:latest as builder
+WORKDIR /var/www/messages
+COPY --chown=docker:docker messages .
+RUN yarn install && yarn proto
+
 # we are rebuilding on each deploy to cope with the API_URL environment URL
 FROM thecodingmachine/nodejs:14-apache
 
-COPY --chown=docker:docker . .
+COPY --chown=docker:docker front .
+COPY --from=builder --chown=docker:docker /var/www/messages/generated /var/www/html/src/Messages/generated
 RUN yarn install
 
 ENV NODE_ENV=production

front/package.json

@@ -4,6 +4,7 @@
   "main": "index.js",
   "license": "SEE LICENSE IN LICENSE.txt",
   "devDependencies": {
+    "@types/google-protobuf": "^3.7.3",
     "@types/jasmine": "^3.5.10",
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.26.0",
@@ -23,6 +24,7 @@
     "@types/simple-peer": "^9.6.0",
     "@types/socket.io-client": "^1.4.32",
     "generic-type-guard": "^3.2.0",
+    "google-protobuf": "^3.13.0",
     "phaser": "^3.22.0",
     "queue-typescript": "^1.0.1",
     "simple-peer": "^9.6.2",

front/src/Connection.ts

@@ -1,13 +1,21 @@
 import Axios from "axios";
 import {API_URL} from "./Enum/EnvironmentVariable";
 import {MessageUI} from "./Logger/MessageUI";
-import {SetPlayerDetailsMessage} from "./Messages/SetPlayerDetailsMessage";
+import {
+    BatchMessage, GroupDeleteMessage, GroupUpdateMessage, ItemEventMessage,
+    PositionMessage,
+    SetPlayerDetailsMessage, UserJoinedMessage, UserLeftMessage, UserMovedMessage,
+    UserMovesMessage,
+    ViewportMessage
+} from "./Messages/generated/messages_pb"
 
 const SocketIo = require('socket.io-client');
 import Socket = SocketIOClient.Socket;
 import {PlayerAnimationNames} from "./Phaser/Player/Animation";
 import {UserSimplePeerInterface} from "./WebRtc/SimplePeer";
 import {SignalData} from "simple-peer";
+import Direction = PositionMessage.Direction;
+import {ProtobufClientUtils} from "./Network/ProtobufClientUtils";
 
 enum EventMessage{
     WEBRTC_SIGNAL = "webrtc-signal",
@@ -46,19 +54,19 @@ export class Point implements PointInterface{
 }
 
 export interface MessageUserPositionInterface {
-    userId: string;
+    userId: number;
     name: string;
     characterLayers: string[];
     position: PointInterface;
 }
 
 export interface MessageUserMovedInterface {
-    userId: string;
+    userId: number;
     position: PointInterface;
 }
 
 export interface MessageUserJoined {
-    userId: string;
+    userId: number;
     name: string;
     characterLayers: string[];
     position: PointInterface
@@ -71,7 +79,7 @@ export interface PositionInterface {
 
 export interface GroupCreatedUpdatedMessageInterface {
     position: PositionInterface,
-    groupId: string
+    groupId: number
 }
 
 export interface WebRtcStartMessageInterface {
@@ -80,16 +88,16 @@ export interface WebRtcStartMessageInterface {
 }
 
 export interface WebRtcDisconnectMessageInterface {
-    userId: string
+    userId: number
 }
 
 export interface WebRtcSignalSentMessageInterface {
-    receiverId: string,
+    receiverId: number,
     signal: SignalData
 }
 
 export interface WebRtcSignalReceivedMessageInterface {
-    userId: string,
+    userId: number,
     signal: SignalData
 }
 
@@ -105,11 +113,6 @@ export interface ViewportInterface {
     bottom: number,
 }
 
-export interface UserMovesInterface {
-    position: PositionInterface,
-    viewport: ViewportInterface,
-}
-
 export interface BatchedMessageInterface {
     event: string,
     payload: unknown
@@ -130,7 +133,8 @@ export interface RoomJoinedMessageInterface {
 
 export class Connection implements Connection {
     private readonly socket: Socket;
-    private userId: string|null = null;
+    private userId: number|null = null;
+    private batchCallbacks: Map<string, Function[]> = new Map<string, Function[]>();
 
     private constructor(token: string) {
 
@@ -148,11 +152,40 @@ export class Connection implements Connection {
         /**
          * Messages inside batched messages are extracted and sent to listeners directly.
          */
-        this.socket.on(EventMessage.BATCH, (batchedMessages: BatchedMessageInterface[]) => {
+        this.socket.on(EventMessage.BATCH, (batchedMessagesBinary: ArrayBuffer) => {
-            for (const message of batchedMessages) {
+            const batchMessage = BatchMessage.deserializeBinary(new Uint8Array(batchedMessagesBinary));
-                const listeners = this.socket.listeners(message.event);
+
+            for (const message of batchMessage.getPayloadList()) {
+                let event: string;
+                let payload;
+                if (message.hasUsermovedmessage()) {
+                    event = EventMessage.USER_MOVED;
+                    payload = message.getUsermovedmessage();
+                } else if (message.hasGroupupdatemessage()) {
+                    event = EventMessage.GROUP_CREATE_UPDATE;
+                    payload = message.getGroupupdatemessage();
+                } else if (message.hasGroupdeletemessage()) {
+                    event = EventMessage.GROUP_DELETE;
+                    payload = message.getGroupdeletemessage();
+                } else if (message.hasUserjoinedmessage()) {
+                    event = EventMessage.JOIN_ROOM;
+                    payload = message.getUserjoinedmessage();
+                } else if (message.hasUserleftmessage()) {
+                    event = EventMessage.USER_LEFT;
+                    payload = message.getUserleftmessage();
+                } else if (message.hasItemeventmessage()) {
+                    event = EventMessage.ITEM_EVENT;
+                    payload = message.getItemeventmessage();
+                } else {
+                    throw new Error('Unexpected batch message type');
+                }
+
+                const listeners = this.batchCallbacks.get(event);
+                if (listeners === undefined) {
+                    continue;
+                }
                 for (const listener of listeners) {
-                    listener(message.payload);
+                    listener(payload);
                 }
             }
         })
@@ -170,10 +203,10 @@ export class Connection implements Connection {
                         reject(error);
                     });
 
-                    connection.socket.emit(EventMessage.SET_PLAYER_DETAILS, {
+                    const message = new SetPlayerDetailsMessage();
-                        name: name,
+                    message.setName(name);
-                        characterLayers: characterLayersSelected
+                    message.setCharacterlayersList(characterLayersSelected);
-                    } as SetPlayerDetailsMessage, (id: string) => {
+                    connection.socket.emit(EventMessage.SET_PLAYER_DETAILS, message.serializeBinary().buffer, (id: number) => {
                         connection.userId = id;
                     });
 
@@ -213,8 +246,42 @@ export class Connection implements Connection {
         if(!this.socket){
             return;
         }
-        const point = new Point(x, y, direction, moving);
+        const positionMessage = new PositionMessage();
-        this.socket.emit(EventMessage.USER_POSITION, { position: point, viewport } as UserMovesInterface);
+        positionMessage.setX(Math.floor(x));
+        positionMessage.setY(Math.floor(y));
+        let directionEnum: PositionMessage.DirectionMap[keyof PositionMessage.DirectionMap];
+        switch (direction) {
+            case 'up':
+                directionEnum = Direction.UP;
+                break;
+            case 'down':
+                directionEnum = Direction.DOWN;
+                break;
+            case 'left':
+                directionEnum = Direction.LEFT;
+                break;
+            case 'right':
+                directionEnum = Direction.RIGHT;
+                break;
+            default:
+                throw new Error("Unexpected direction");
+        }
+        positionMessage.setDirection(directionEnum);
+        positionMessage.setMoving(moving);
+
+        const viewportMessage = new ViewportMessage();
+        viewportMessage.setLeft(Math.floor(viewport.left));
+        viewportMessage.setRight(Math.floor(viewport.right));
+        viewportMessage.setTop(Math.floor(viewport.top));
+        viewportMessage.setBottom(Math.floor(viewport.bottom));
+
+        const userMovesMessage = new UserMovesMessage();
+        userMovesMessage.setPosition(positionMessage);
+        userMovesMessage.setViewport(viewportMessage);
+
+        //console.log('Sending position ', positionMessage.getX(), positionMessage.getY());
+
+        this.socket.emit(EventMessage.USER_POSITION, userMovesMessage.serializeBinary().buffer);
     }
 
     public setSilent(silent: boolean): void {
@@ -222,41 +289,89 @@ export class Connection implements Connection {
     }
 
     public setViewport(viewport: ViewportInterface): void {
-        this.socket.emit(EventMessage.SET_VIEWPORT, viewport);
+        const viewportMessage = new ViewportMessage();
+        viewportMessage.setTop(Math.round(viewport.top));
+        viewportMessage.setBottom(Math.round(viewport.bottom));
+        viewportMessage.setLeft(Math.round(viewport.left));
+        viewportMessage.setRight(Math.round(viewport.right));
+
+        this.socket.emit(EventMessage.SET_VIEWPORT, viewportMessage.serializeBinary().buffer);
     }
 
     public onUserJoins(callback: (message: MessageUserJoined) => void): void {
-        this.socket.on(EventMessage.JOIN_ROOM, callback);
+        this.onBatchMessage(EventMessage.JOIN_ROOM, (message: UserJoinedMessage) => {
+            const position = message.getPosition();
+            if (position === undefined) {
+                throw new Error('Invalid JOIN_ROOM message');
+            }
+            const messageUserJoined: MessageUserJoined = {
+                userId: message.getUserid(),
+                name: message.getName(),
+                characterLayers: message.getCharacterlayersList(),
+                position: ProtobufClientUtils.toPointInterface(position)
+            }
+            callback(messageUserJoined);
+        });
     }
 
-    public onUserMoved(callback: (message: MessageUserMovedInterface) => void): void {
+    public onUserMoved(callback: (message: UserMovedMessage) => void): void {
-        this.socket.on(EventMessage.USER_MOVED, callback);
+        this.onBatchMessage(EventMessage.USER_MOVED, callback);
+        //this.socket.on(EventMessage.USER_MOVED, callback);
     }
 
-    public onUserLeft(callback: (userId: string) => void): void {
+    /**
-        this.socket.on(EventMessage.USER_LEFT, callback);
+     * Registers a listener on a message that is part of a batch
+     */
+    private onBatchMessage(eventName: string, callback: Function): void {
+        let callbacks = this.batchCallbacks.get(eventName);
+        if (callbacks === undefined) {
+            callbacks = new Array<Function>();
+            this.batchCallbacks.set(eventName, callbacks);
+        }
+        callbacks.push(callback);
+    }
+
+    public onUserLeft(callback: (userId: number) => void): void {
+        this.onBatchMessage(EventMessage.USER_LEFT, (message: UserLeftMessage) => {
+            callback(message.getUserid());
+        });
     }
 
     public onGroupUpdatedOrCreated(callback: (groupCreateUpdateMessage: GroupCreatedUpdatedMessageInterface) => void): void {
-        this.socket.on(EventMessage.GROUP_CREATE_UPDATE, callback);
+        this.onBatchMessage(EventMessage.GROUP_CREATE_UPDATE, (message: GroupUpdateMessage) => {
+            const position = message.getPosition();
+            if (position === undefined) {
+                throw new Error('Missing position in GROUP_CREATE_UPDATE');
             }
 
-    public onGroupDeleted(callback: (groupId: string) => void): void {
+            const groupCreateUpdateMessage: GroupCreatedUpdatedMessageInterface = {
-        this.socket.on(EventMessage.GROUP_DELETE, callback)
+                groupId: message.getGroupid(),
+                position: position.toObject()
+            }
+
+            //console.log('Group position: ', position.toObject());
+            callback(groupCreateUpdateMessage);
+        });
+    }
+
+    public onGroupDeleted(callback: (groupId: number) => void): void {
+        this.onBatchMessage(EventMessage.GROUP_DELETE, (message: GroupDeleteMessage) => {
+            callback(message.getGroupid());
+        });
     }
 
     public onConnectError(callback: (error: object) => void): void {
         this.socket.on(EventMessage.CONNECT_ERROR, callback)
     }
 
-    public sendWebrtcSignal(signal: unknown, receiverId : string) {
+    public sendWebrtcSignal(signal: unknown, receiverId: number) {
         return this.socket.emit(EventMessage.WEBRTC_SIGNAL, {
             receiverId: receiverId,
             signal: signal
         } as WebRtcSignalSentMessageInterface);
     }
 
-    public sendWebrtcScreenSharingSignal(signal: unknown, receiverId : string) {
+    public sendWebrtcScreenSharingSignal(signal: unknown, receiverId: number) {
         return this.socket.emit(EventMessage.WEBRTC_SCREEN_SHARING_SIGNAL, {
             receiverId: receiverId,
             signal: signal
@@ -286,7 +401,7 @@ export class Connection implements Connection {
 
     }
 
-    public getUserId(): string|null {
+    public getUserId(): number|null {
         return this.userId;
     }
 
@@ -294,16 +409,24 @@ export class Connection implements Connection {
         this.socket.on(EventMessage.WEBRTC_DISCONNECT, callback);
     }
 
-    emitActionableEvent(itemId: number, event: string, state: unknown, parameters: unknown) {
+    emitActionableEvent(itemId: number, event: string, state: unknown, parameters: unknown): void {
-        return this.socket.emit(EventMessage.ITEM_EVENT, {
+        const itemEventMessage = new ItemEventMessage();
-            itemId,
+        itemEventMessage.setItemid(itemId);
-            event,
+        itemEventMessage.setEvent(event);
-            state,
+        itemEventMessage.setStatejson(JSON.stringify(state));
-            parameters
+        itemEventMessage.setParametersjson(JSON.stringify(parameters));
-        });
+
+        this.socket.emit(EventMessage.ITEM_EVENT, itemEventMessage.serializeBinary().buffer);
     }
 
     onActionableEvent(callback: (message: ItemEventMessageInterface) => void): void {
-        this.socket.on(EventMessage.ITEM_EVENT, callback);
+        this.onBatchMessage(EventMessage.ITEM_EVENT, (message: ItemEventMessage) => {
+            callback({
+                itemId: message.getItemid(),
+                event: message.getEvent(),
+                parameters: JSON.parse(message.getParametersjson()),
+                state: JSON.parse(message.getStatejson())
+            });
+        });
     }
 }

front/src/Messages/.gitignore

@@ -0,0 +1 @@
+/generated/

front/src/Messages/SetPlayerDetailsMessage.ts

@@ -1,4 +0,0 @@
-export interface SetPlayerDetailsMessage {
-    name: string,
-    characterLayers: string[]
-}

front/src/Network/ProtobufClientUtils.ts

@@ -0,0 +1,34 @@
+import {PositionMessage} from "../Messages/generated/messages_pb";
+import {PointInterface} from "../Connection";
+import Direction = PositionMessage.Direction;
+
+export class ProtobufClientUtils {
+
+    public static toPointInterface(position: PositionMessage): PointInterface {
+        let direction: string;
+        switch (position.getDirection()) {
+            case Direction.UP:
+                direction = 'up';
+                break;
+            case Direction.DOWN:
+                direction = 'down';
+                break;
+            case Direction.LEFT:
+                direction = 'left';
+                break;
+            case Direction.RIGHT:
+                direction = 'right';
+                break;
+            default:
+                throw new Error("Unexpected direction");
+        }
+
+        // sending to all clients in room except sender
+        return {
+            x: position.getX(),
+            y: position.getY(),
+            direction,
+            moving: position.getMoving(),
+        };
+    }
+}

front/src/Phaser/Entity/RemotePlayer.ts

@@ -6,10 +6,10 @@ import {Character} from "../Entity/Character";
  * Class representing the sprite of a remote player (a player that plays on another computer)
  */
 export class RemotePlayer extends Character {
-    userId: string;
+    userId: number;
 
     constructor(
-        userId: string,
+        userId: number,
         Scene: GameScene,
         x: number,
         y: number,

front/src/Phaser/Game/AddPlayerInterface.ts

@@ -1,7 +1,7 @@
 import {PointInterface} from "../../Connection";
 
 export interface AddPlayerInterface {
-    userId: string;
+    userId: number;
     name: string;
     characterLayers: string[];
     position: PointInterface;

front/src/Phaser/Game/GameScene.ts

@@ -40,6 +40,8 @@ import {FourOFourSceneName} from "../Reconnecting/FourOFourScene";
 import {ItemFactoryInterface} from "../Items/ItemFactoryInterface";
 import {ActionableItem} from "../Items/ActionableItem";
 import {UserInputManager} from "../UserInput/UserInputManager";
+import {UserMovedMessage} from "../../Messages/generated/messages_pb";
+import {ProtobufClientUtils} from "../../Network/ProtobufClientUtils";
 
 
 export enum Textures {
@@ -63,7 +65,7 @@ interface AddPlayerEventInterface {
 
 interface RemovePlayerEventInterface {
     type: 'RemovePlayerEvent'
-    userId: string
+    userId: number
 }
 
 interface UserMovedEventInterface {
@@ -78,7 +80,7 @@ interface GroupCreatedUpdatedEventInterface {
 
 interface DeleteGroupEventInterface {
     type: 'DeleteGroupEvent'
-    groupId: string
+    groupId: number
 }
 
 export class GameScene extends Phaser.Scene implements CenterListener {
@@ -86,12 +88,12 @@ export class GameScene extends Phaser.Scene implements CenterListener {
     Terrains : Array<Phaser.Tilemaps.Tileset>;
     CurrentPlayer!: CurrentGamerInterface;
     MapPlayers!: Phaser.Physics.Arcade.Group;
-    MapPlayersByKey : Map<string, RemotePlayer> = new Map<string, RemotePlayer>();
+    MapPlayersByKey : Map<number, RemotePlayer> = new Map<number, RemotePlayer>();
     Map!: Phaser.Tilemaps.Tilemap;
     Layers!: Array<Phaser.Tilemaps.StaticTilemapLayer>;
     Objects!: Array<Phaser.Physics.Arcade.Sprite>;
     mapFile!: ITiledMap;
-    groups: Map<string, Sprite>;
+    groups: Map<number, Sprite>;
     startX!: number;
     startY!: number;
     circleTexture!: CanvasTexture;
@@ -147,7 +149,7 @@ export class GameScene extends Phaser.Scene implements CenterListener {
 
         this.GameManager = gameManager;
         this.Terrains = [];
-        this.groups = new Map<string, Sprite>();
+        this.groups = new Map<number, Sprite>();
         this.instance = instance;
 
         this.MapKey = MapKey;
@@ -213,11 +215,22 @@ export class GameScene extends Phaser.Scene implements CenterListener {
                 this.addPlayer(userMessage);
             });
 
-            connection.onUserMoved((message: MessageUserMovedInterface) => {
+            connection.onUserMoved((message: UserMovedMessage) => {
-                this.updatePlayerPosition(message);
+                const position = message.getPosition();
+                if (position === undefined) {
+                    throw new Error('Position missing from UserMovedMessage');
+                }
+                //console.log('Received position ', position.getX(), position.getY(), "from user", message.getUserid());
+
+                const messageUserMoved: MessageUserMovedInterface = {
+                    userId: message.getUserid(),
+                    position: ProtobufClientUtils.toPointInterface(position)
+                }
+
+                this.updatePlayerPosition(messageUserMoved);
             });
 
-            connection.onUserLeft((userId: string) => {
+            connection.onUserLeft((userId: number) => {
                 this.removePlayer(userId);
             });
 
@@ -225,7 +238,7 @@ export class GameScene extends Phaser.Scene implements CenterListener {
                 this.shareGroupPosition(groupPositionMessage);
             })
 
-            connection.onGroupDeleted((groupId: string) => {
+            connection.onGroupDeleted((groupId: number) => {
                 try {
                     this.deleteGroup(groupId);
                 } catch (e) {
@@ -271,7 +284,7 @@ export class GameScene extends Phaser.Scene implements CenterListener {
                     self.presentationModeSprite.setVisible(true);
                     self.chatModeSprite.setVisible(true);
                 },
-                onDisconnect(userId: string) {
+                onDisconnect(userId: number) {
                     if (self.simplePeer.getNbConnections() === 0) {
                         self.presentationModeSprite.setVisible(false);
                         self.chatModeSprite.setVisible(false);
@@ -918,7 +931,7 @@ export class GameScene extends Phaser.Scene implements CenterListener {
 
         // Let's move all users
         const updatedPlayersPositions = this.playersPositionInterpolator.getUpdatedPositions(time);
-        updatedPlayersPositions.forEach((moveEvent: HasMovedEvent, userId: string) => {
+        updatedPlayersPositions.forEach((moveEvent: HasMovedEvent, userId: number) => {
             const player : RemotePlayer | undefined = this.MapPlayersByKey.get(userId);
             if (player === undefined) {
                 throw new Error('Cannot find player with ID "' + userId +'"');
@@ -973,7 +986,7 @@ export class GameScene extends Phaser.Scene implements CenterListener {
             player.destroy();
             this.MapPlayers.remove(player);
         });
-        this.MapPlayersByKey = new Map<string, RemotePlayer>();
+        this.MapPlayersByKey = new Map<number, RemotePlayer>();
 
         // load map
         usersPosition.forEach((userPosition : MessageUserPositionInterface) => {
@@ -1030,14 +1043,14 @@ export class GameScene extends Phaser.Scene implements CenterListener {
     /**
      * Called by the connexion when a player is removed from the map
      */
-    public removePlayer(userId: string) {
+    public removePlayer(userId: number) {
         this.pendingEvents.enqueue({
             type: "RemovePlayerEvent",
             userId
         });
     }
 
-    private doRemovePlayer(userId: string) {
+    private doRemovePlayer(userId: number) {
         const player = this.MapPlayersByKey.get(userId);
         if (player === undefined) {
             console.error('Cannot find user with id ', userId);
@@ -1067,6 +1080,7 @@ export class GameScene extends Phaser.Scene implements CenterListener {
         // We do not update the player position directly (because it is sent only every 200ms).
         // Instead we use the PlayersPositionInterpolator that will do a smooth animation over the next 200ms.
         const playerMovement = new PlayerMovement({ x: player.x, y: player.y }, this.currentTick, message.position, this.currentTick + POSITION_DELAY);
+        //console.log('Target position: ', player.x, player.y);
         this.playersPositionInterpolator.updatePlayerPosition(player.userId, playerMovement);
     }
 
@@ -1096,14 +1110,14 @@ export class GameScene extends Phaser.Scene implements CenterListener {
         }
     }
 
-    deleteGroup(groupId: string): void {
+    deleteGroup(groupId: number): void {
         this.pendingEvents.enqueue({
             type: "DeleteGroupEvent",
             groupId
         });
     }
 
-    doDeleteGroup(groupId: string): void {
+    doDeleteGroup(groupId: number): void {
         const group = this.groups.get(groupId);
         if(!group){
             return;

front/src/Phaser/Game/PlayerMovement.ts

@@ -20,12 +20,13 @@ export class PlayerMovement {
     public getPosition(tick: number): HasMovedEvent {
         // Special case: end position reached and end position is not moving
         if (tick >= this.endTick && this.endPosition.moving === false) {
+            //console.log('Movement finished ', this.endPosition)
             return this.endPosition;
         }
 
         const x = (this.endPosition.x - this.startPosition.x) * ((tick - this.startTick) / (this.endTick - this.startTick)) + this.startPosition.x;
         const y = (this.endPosition.y - this.startPosition.y) * ((tick - this.startTick) / (this.endTick - this.startTick)) + this.startPosition.y;
-
+        //console.log('Computed position ', x, y)
         return {
             x,
             y,

front/src/Phaser/Game/PlayersPositionInterpolator.ts

@@ -6,19 +6,19 @@ import {PlayerMovement} from "./PlayerMovement";
 import {HasMovedEvent} from "./GameManager";
 
 export class PlayersPositionInterpolator {
-    playerMovements: Map<string, PlayerMovement> = new Map<string, PlayerMovement>();
+    playerMovements: Map<number, PlayerMovement> = new Map<number, PlayerMovement>();
 
-    updatePlayerPosition(userId: string, playerMovement: PlayerMovement) : void {
+    updatePlayerPosition(userId: number, playerMovement: PlayerMovement) : void {
         this.playerMovements.set(userId, playerMovement);
     }
 
-    removePlayer(userId: string): void {
+    removePlayer(userId: number): void {
         this.playerMovements.delete(userId);
     }
 
-    getUpdatedPositions(tick: number) : Map<string, HasMovedEvent> {
+    getUpdatedPositions(tick: number) : Map<number, HasMovedEvent> {
-        const positions = new Map<string, HasMovedEvent>();
+        const positions = new Map<number, HasMovedEvent>();
-        this.playerMovements.forEach((playerMovement: PlayerMovement, userId: string) => {
+        this.playerMovements.forEach((playerMovement: PlayerMovement, userId: number) => {
             if (playerMovement.isOutdated(tick)) {
                 //console.log("outdated")
                 this.playerMovements.delete(userId);

front/src/WebRtc/MediaManager.ts

@@ -387,7 +387,7 @@ export class MediaManager {
      *
      * @param userId
      */
-    disabledMicrophoneByUserId(userId: string){
+    disabledMicrophoneByUserId(userId: number){
         const element = document.getElementById(`microphone-${userId}`);
         if(!element){
             return;
@@ -399,7 +399,7 @@ export class MediaManager {
      *
      * @param userId
      */
-    enabledMicrophoneByUserId(userId: string){
+    enabledMicrophoneByUserId(userId: number){
         const element = document.getElementById(`microphone-${userId}`);
         if(!element){
             return;
@@ -411,7 +411,7 @@ export class MediaManager {
      *
      * @param userId
      */
-    disabledVideoByUserId(userId: string) {
+    disabledVideoByUserId(userId: number) {
         let element = document.getElementById(`${userId}`);
         if (element) {
             element.style.opacity = "0";
@@ -426,7 +426,7 @@ export class MediaManager {
      *
      * @param userId
      */
-    enabledVideoByUserId(userId: string){
+    enabledVideoByUserId(userId: number){
         let element = document.getElementById(`${userId}`);
         if(element){
             element.style.opacity = "1";

front/src/WebRtc/ScreenSharingPeer.ts

@@ -14,7 +14,7 @@ export class ScreenSharingPeer extends Peer {
      */
     private isReceivingStream:boolean = false;
 
-    constructor(private userId: string, initiator: boolean, private connection: Connection) {
+    constructor(private userId: number, initiator: boolean, private connection: Connection) {
         super({
             initiator: initiator ? initiator : false,
             reconnectTimer: 10000,
@@ -52,7 +52,7 @@ export class ScreenSharingPeer extends Peer {
             if (message.streamEnded !== true) {
                 console.error('Unexpected message on screen sharing peer connection');
             }
-            mediaManager.removeActiveScreenSharingVideo(this.userId);
+            mediaManager.removeActiveScreenSharingVideo("" + this.userId);
         });
 
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -63,7 +63,7 @@ export class ScreenSharingPeer extends Peer {
 
         this.on('connect', () => {
             // FIXME: we need to put the loader on the screen sharing connection
-            mediaManager.isConnected(this.userId);
+            mediaManager.isConnected("" + this.userId);
             console.info(`connect => ${this.userId}`);
         });
 
@@ -86,10 +86,10 @@ export class ScreenSharingPeer extends Peer {
         //console.log(`ScreenSharingPeer::stream => ${this.userId}`, stream);
         //console.log(`stream => ${this.userId} => `, stream);
         if(!stream){
-            mediaManager.removeActiveScreenSharingVideo(this.userId);
+            mediaManager.removeActiveScreenSharingVideo("" + this.userId);
             this.isReceivingStream = false;
         } else {
-            mediaManager.addStreamRemoteScreenSharing(this.userId, stream);
+            mediaManager.addStreamRemoteScreenSharing("" + this.userId, stream);
             this.isReceivingStream = true;
         }
     }
@@ -100,7 +100,7 @@ export class ScreenSharingPeer extends Peer {
 
     public destroy(error?: Error): void {
         try {
-            mediaManager.removeActiveScreenSharingVideo(this.userId);
+            mediaManager.removeActiveScreenSharingVideo("" + this.userId);
             // FIXME: I don't understand why "Closing connection with" message is displayed TWICE before "Nb users in peerConnectionArray"
             // I do understand the method closeConnection is called twice, but I don't understand how they manage to run in parallel.
             //console.log('Closing connection with '+userId);

front/src/WebRtc/SimplePeer.ts

@@ -16,7 +16,7 @@ import {VideoPeer} from "./VideoPeer";
 const Peer: SimplePeerNamespace.SimplePeer = require('simple-peer');
 
 export interface UserSimplePeerInterface{
-    userId: string;
+    userId: number;
     name?: string;
     initiator?: boolean;
 }
@@ -24,7 +24,7 @@ export interface UserSimplePeerInterface{
 export interface PeerConnectionListener {
     onConnect(user: UserSimplePeerInterface): void;
 
-    onDisconnect(userId: string): void;
+    onDisconnect(userId: number): void;
 }
 
 /**
@@ -35,8 +35,8 @@ export class SimplePeer {
     private WebRtcRoomId: string;
     private Users: Array<UserSimplePeerInterface> = new Array<UserSimplePeerInterface>();
 
-    private PeerScreenSharingConnectionArray: Map<string, ScreenSharingPeer> = new Map<string, ScreenSharingPeer>();
+    private PeerScreenSharingConnectionArray: Map<number, ScreenSharingPeer> = new Map<number, ScreenSharingPeer>();
-    private PeerConnectionArray: Map<string, VideoPeer> = new Map<string, VideoPeer>();
+    private PeerConnectionArray: Map<number, VideoPeer> = new Map<number, VideoPeer>();
     private readonly sendLocalVideoStreamCallback: UpdatedLocalStreamCallback;
     private readonly sendLocalScreenSharingStreamCallback: StartScreenSharingCallback;
     private readonly stopLocalScreenSharingStreamCallback: StopScreenSharingCallback;
@@ -140,8 +140,8 @@ export class SimplePeer {
             }
         }
 
-        mediaManager.removeActiveVideo(user.userId);
+        mediaManager.removeActiveVideo("" + user.userId);
-        mediaManager.addActiveVideo(user.userId, name);
+        mediaManager.addActiveVideo("" + user.userId, name);
 
         const peer = new VideoPeer(user.userId, user.initiator ? user.initiator : false, this.Connection);
         // When a connection is established to a video stream, and if a screen sharing is taking place,
@@ -171,8 +171,8 @@ export class SimplePeer {
 
         // We should display the screen sharing ONLY if we are not initiator
         if (!user.initiator) {
-            mediaManager.removeActiveScreenSharingVideo(user.userId);
+            mediaManager.removeActiveScreenSharingVideo("" + user.userId);
-            mediaManager.addScreenSharingActiveVideo(user.userId);
+            mediaManager.addScreenSharingActiveVideo("" + user.userId);
         }
 
         const peer = new ScreenSharingPeer(user.userId, user.initiator ? user.initiator : false, this.Connection);
@@ -189,7 +189,7 @@ export class SimplePeer {
      *
      * @param userId
      */
-    private closeConnection(userId : string) {
+    private closeConnection(userId : number) {
         try {
             //mediaManager.removeActiveVideo(userId);
             const peer = this.PeerConnectionArray.get(userId);
@@ -217,9 +217,9 @@ export class SimplePeer {
      *
      * @param userId
      */
-    private closeScreenSharingConnection(userId : string) {
+    private closeScreenSharingConnection(userId : number) {
         try {
-            mediaManager.removeActiveScreenSharingVideo(userId);
+            mediaManager.removeActiveScreenSharingVideo("" + userId);
             const peer = this.PeerScreenSharingConnectionArray.get(userId);
             if (peer === undefined) {
                 console.warn("Tried to close connection for user "+userId+" but could not find user")
@@ -293,7 +293,7 @@ export class SimplePeer {
      *
      * @param userId
      */
-    private pushVideoToRemoteUser(userId : string) {
+    private pushVideoToRemoteUser(userId : number) {
         try {
             const PeerConnection = this.PeerConnectionArray.get(userId);
             if (!PeerConnection) {
@@ -314,7 +314,7 @@ export class SimplePeer {
         }
     }
 
-    private pushScreenSharingToRemoteUser(userId : string) {
+    private pushScreenSharingToRemoteUser(userId : number) {
         const PeerConnection = this.PeerScreenSharingConnectionArray.get(userId);
         if (!PeerConnection) {
             throw new Error('While pushing screen sharing, cannot find user with ID ' + userId);
@@ -359,7 +359,7 @@ export class SimplePeer {
         }
     }
 
-    private sendLocalScreenSharingStreamToUser(userId: string): void {
+    private sendLocalScreenSharingStreamToUser(userId: number): void {
         // If a connection already exists with user (because it is already sharing a screen with us... let's use this connection)
         if (this.PeerScreenSharingConnectionArray.has(userId)) {
             this.pushScreenSharingToRemoteUser(userId);
@@ -376,7 +376,7 @@ export class SimplePeer {
         }
     }
 
-    private stopLocalScreenSharingStreamToUser(userId: string, stream: MediaStream): void {
+    private stopLocalScreenSharingStreamToUser(userId: number, stream: MediaStream): void {
         const PeerConnectionScreenSharing = this.PeerScreenSharingConnectionArray.get(userId);
         if (!PeerConnectionScreenSharing) {
             throw new Error('Weird, screen sharing connection to user ' + userId + 'not found')

front/src/WebRtc/VideoPeer.ts

@@ -9,7 +9,7 @@ const Peer: SimplePeerNamespace.SimplePeer = require('simple-peer');
  * A peer connection used to transmit video / audio signals between 2 peers.
  */
 export class VideoPeer extends Peer {
-    constructor(private userId: string, initiator: boolean, private connection: Connection) {
+    constructor(private userId: number, initiator: boolean, private connection: Connection) {
         super({
             initiator: initiator ? initiator : false,
             reconnectTimer: 10000,
@@ -63,11 +63,11 @@ export class VideoPeer extends Peer {
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
         this.on('error', (err: any) => {
             console.error(`error => ${this.userId} => ${err.code}`, err);
-            mediaManager.isError(userId);
+            mediaManager.isError("" + userId);
         });
 
         this.on('connect', () => {
-            mediaManager.isConnected(this.userId);
+            mediaManager.isConnected("" + this.userId);
             console.info(`connect => ${this.userId}`);
         });
 
@@ -108,7 +108,7 @@ export class VideoPeer extends Peer {
             mediaManager.disabledVideoByUserId(this.userId);
             mediaManager.disabledMicrophoneByUserId(this.userId);
         } else {
-            mediaManager.addStreamRemoteVideo(this.userId, stream);
+            mediaManager.addStreamRemoteVideo("" + this.userId, stream);
         }
     }
 
@@ -117,7 +117,7 @@ export class VideoPeer extends Peer {
      */
     public destroy(error?: Error): void {
         try {
-            mediaManager.removeActiveVideo(this.userId);
+            mediaManager.removeActiveVideo("" + this.userId);
             // FIXME: I don't understand why "Closing connection with" message is displayed TWICE before "Nb users in peerConnectionArray"
             // I do understand the method closeConnection is called twice, but I don't understand how they manage to run in parallel.
             //console.log('Closing connection with '+userId);

front/yarn.lock

@@ -66,6 +66,11 @@
     "@types/minimatch" "*"
     "@types/node" "*"
 
+"@types/google-protobuf@^3.7.3":
+  version "3.7.3"
+  resolved "https://registry.yarnpkg.com/@types/google-protobuf/-/google-protobuf-3.7.3.tgz#429512e541bbd777f2c867692e6335ee08d1f6d4"
+  integrity sha512-FRwj40euE2bYkG+0X5w2nEA8yAzgJRcEa7RBd0Gsdkb9/tPM2pctVVAvnOUTbcXo2VmIHPo0Ae94Gl9vRHfKzg==
+
 "@types/html-minifier-terser@^5.0.0":
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/@types/html-minifier-terser/-/html-minifier-terser-5.1.0.tgz#551a4589b6ee2cc9c1dff08056128aec29b94880"
@@ -2237,6 +2242,11 @@ globby@^6.1.0:
     pify "^2.0.0"
     pinkie-promise "^2.0.0"
 
+google-protobuf@^3.13.0:
+  version "3.13.0"
+  resolved "https://registry.yarnpkg.com/google-protobuf/-/google-protobuf-3.13.0.tgz#909c5983d75dd6101ed57c79e0528d000cdc3251"
+  integrity sha512-ZIf3qfLFayVrPvAjeKKxO5FRF1/NwRxt6Dko+fWEMuHwHbZx8/fcaAao9b0wCM6kr8qeg2te8XTpyuvKuD9aKw==
+
 graceful-fs@^4.1.11, graceful-fs@^4.1.15, graceful-fs@^4.1.2:
   version "4.2.4"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.4.tgz#2256bde14d3632958c465ebc96dc467ca07a29fb"

messages/.gitignore

@@ -0,0 +1 @@
+/node_modules/

messages/generated/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

messages/messages.proto

@@ -0,0 +1,92 @@
+syntax = "proto3";
+
+/*********** PARTIAL MESSAGES **************/
+
+message PositionMessage {
+  int32 x = 1;
+  int32 y = 2;
+  enum Direction {
+    UP = 0;
+    RIGHT = 1;
+    DOWN = 2;
+    LEFT = 3;
+  }
+  Direction direction = 3;
+  bool moving = 4;
+}
+
+message PointMessage {
+  int32 x = 1;
+  int32 y = 2;
+}
+
+message ViewportMessage {
+  int32 left = 1;
+  int32 top = 2;
+  int32 right = 3;
+  int32 bottom = 4;
+}
+
+/*********** CLIENT TO SERVER MESSAGES *************/
+
+message SetPlayerDetailsMessage {
+  string name = 1;
+  repeated string characterLayers = 2;
+}
+
+message UserMovesMessage {
+  PositionMessage position = 1;
+  ViewportMessage viewport = 2;
+}
+
+/************ BI-DIRECTIONAL MESSAGES **************/
+
+message ItemEventMessage {
+  int32 itemId = 1;
+  string event = 2;
+  string stateJson = 3;
+  string parametersJson = 4;
+}
+
+/*********** SERVER TO CLIENT MESSAGES *************/
+
+message UserMovedMessage {
+  int32 userId = 1;
+  PositionMessage position = 2;
+}
+
+message SubMessage {
+  oneof message {
+    UserMovedMessage userMovedMessage = 1;
+    GroupUpdateMessage groupUpdateMessage = 2;
+    GroupDeleteMessage groupDeleteMessage = 3;
+    UserJoinedMessage userJoinedMessage = 4;
+    UserLeftMessage userLeftMessage = 5;
+    ItemEventMessage itemEventMessage = 6;
+  }
+}
+
+message BatchMessage {
+  string event = 1;
+  repeated SubMessage payload = 2;
+}
+
+message GroupUpdateMessage {
+  int32 groupId = 1;
+  PointMessage position = 2;
+}
+
+message GroupDeleteMessage {
+  int32 groupId = 1;
+}
+
+message UserJoinedMessage {
+  int32 userId = 1;
+  string name = 2;
+  repeated string characterLayers = 3;
+  PositionMessage position = 4;
+}
+
+message UserLeftMessage {
+  int32 userId = 1;
+}

messages/package.json

@@ -0,0 +1,46 @@
+{
+  "name": "workadventure-messages",
+  "version": "1.0.0",
+  "description": "",
+  "main": "generated/src/proto/messages_pb.js",
+  "scripts": {
+    "proto": "protoc --plugin=\"protoc-gen-ts=./node_modules/.bin/protoc-gen-ts\" --js_out=\"import_style=commonjs,binary:generated\" --ts_out=\"generated\" messages.proto",
+    "copy-to-back": "rm -rf ../back/src/Messages/generated && cp -rf generated/ ../back/src/Messages/generated",
+    "copy-to-front": "rm -rf ../front/src/Messages/generated && cp -rf generated/ ../front/src/Messages/generated",
+    "proto-all": "yarn run proto && yarn run copy-to-back && yarn run copy-to-front",
+    "proto:watch": "yarn run proto-all; inotifywait -q -m -e close_write messages.proto | while read -r filename event; do yarn run proto-all; done"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/thecodingmachine/workadventure.git"
+  },
+  "contributors": [
+    {
+      "name": "Grégoire Parant",
+      "email": "g.parant@thecodingmachine.com"
+    },
+    {
+      "name": "David Négrier",
+      "email": "d.negrier@thecodingmachine.com"
+    },
+    {
+      "name": "Arthmaël Poly",
+      "email": "a.poly@thecodingmachine.com"
+    }
+  ],
+  "license": "SEE LICENSE IN LICENSE.txt",
+  "bugs": {
+    "url": "https://github.com/thecodingmachine/workadventure/issues"
+  },
+  "homepage": "https://github.com/thecodingmachine/workadventure#readme",
+  "dependencies": {
+    "google-protobuf": "^3.13.0",
+    "typescript": "^3.8.3"
+  },
+  "devDependencies": {
+    "ts-node-dev": "^1.0.0-pre.44",
+    "@types/google-protobuf": "^3.7.3",
+    "concurrently": "^5.3.0",
+    "ts-protoc-gen": "^0.13.0"
+  }
+}

messages/yarn.lock

@@ -0,0 +1,889 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@types/google-protobuf@^3.7.3":
+  version "3.7.3"
+  resolved "https://registry.yarnpkg.com/@types/google-protobuf/-/google-protobuf-3.7.3.tgz#429512e541bbd777f2c867692e6335ee08d1f6d4"
+  integrity sha512-FRwj40euE2bYkG+0X5w2nEA8yAzgJRcEa7RBd0Gsdkb9/tPM2pctVVAvnOUTbcXo2VmIHPo0Ae94Gl9vRHfKzg==
+
+"@types/strip-bom@^3.0.0":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/strip-bom/-/strip-bom-3.0.0.tgz#14a8ec3956c2e81edb7520790aecf21c290aebd2"
+  integrity sha1-FKjsOVbC6B7bdSB5CuzyHCkK69I=
+
+"@types/strip-json-comments@0.0.30":
+  version "0.0.30"
+  resolved "https://registry.yarnpkg.com/@types/strip-json-comments/-/strip-json-comments-0.0.30.tgz#9aa30c04db212a9a0649d6ae6fd50accc40748a1"
+  integrity sha512-7NQmHra/JILCd1QqpSzl8+mJRc8ZHz3uDm8YV1Ks9IhK0epEiTw8aIErbvH9PI+6XbqhyIQy3462nEsn7UVzjQ==
+
+ansi-regex@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
+  integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
+
+ansi-styles@^3.2.0, ansi-styles@^3.2.1:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
+  integrity sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
+  dependencies:
+    color-convert "^1.9.0"
+
+anymatch@~3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-3.1.1.tgz#c55ecf02185e2469259399310c173ce31233b142"
+  integrity sha512-mM8522psRCqzV+6LhomX5wgp25YVibjh8Wj23I5RPkPppSVSjyKD2A2mBJmWGa+KN7f2D6LNh9jkBCeyLktzjg==
+  dependencies:
+    normalize-path "^3.0.0"
+    picomatch "^2.0.4"
+
+arg@^4.1.0:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/arg/-/arg-4.1.3.tgz#269fc7ad5b8e42cb63c896d5666017261c144089"
+  integrity sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==
+
+array-find-index@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/array-find-index/-/array-find-index-1.0.2.tgz#df010aa1287e164bbda6f9723b0a96a1ec4187a1"
+  integrity sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E=
+
+balanced-match@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+  integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
+
+binary-extensions@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-2.1.0.tgz#30fa40c9e7fe07dbc895678cd287024dea241dd9"
+  integrity sha512-1Yj8h9Q+QDF5FzhMs/c9+6UntbD5MkRfRwac8DoEm9ZfUBZ7tZ55YcGVAzEe4bXsdQHEk+s9S5wsOKVdZrw0tQ==
+
+brace-expansion@^1.1.7:
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
+  integrity sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+braces@~3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.2.tgz#3454e1a462ee8d599e236df336cd9ea4f8afe107"
+  integrity sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==
+  dependencies:
+    fill-range "^7.0.1"
+
+buffer-from@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
+  integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
+
+camelcase-keys@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/camelcase-keys/-/camelcase-keys-2.1.0.tgz#308beeaffdf28119051efa1d932213c91b8f92e7"
+  integrity sha1-MIvur/3ygRkFHvodkyITyRuPkuc=
+  dependencies:
+    camelcase "^2.0.0"
+    map-obj "^1.0.0"
+
+camelcase@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-2.1.1.tgz#7c1d16d679a1bbe59ca02cacecfb011e201f5a1f"
+  integrity sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8=
+
+camelcase@^5.0.0:
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
+  integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
+
+chalk@^2.4.2:
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
+  integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
+  dependencies:
+    ansi-styles "^3.2.1"
+    escape-string-regexp "^1.0.5"
+    supports-color "^5.3.0"
+
+chokidar@^3.4.0:
+  version "3.4.2"
+  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.4.2.tgz#38dc8e658dec3809741eb3ef7bb0a47fe424232d"
+  integrity sha512-IZHaDeBeI+sZJRX7lGcXsdzgvZqKv6sECqsbErJA4mHWfpRrD8B97kSFN4cQz6nGBGiuFia1MKR4d6c1o8Cv7A==
+  dependencies:
+    anymatch "~3.1.1"
+    braces "~3.0.2"
+    glob-parent "~5.1.0"
+    is-binary-path "~2.1.0"
+    is-glob "~4.0.1"
+    normalize-path "~3.0.0"
+    readdirp "~3.4.0"
+  optionalDependencies:
+    fsevents "~2.1.2"
+
+cliui@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-5.0.0.tgz#deefcfdb2e800784aa34f46fa08e06851c7bbbc5"
+  integrity sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==
+  dependencies:
+    string-width "^3.1.0"
+    strip-ansi "^5.2.0"
+    wrap-ansi "^5.1.0"
+
+color-convert@^1.9.0:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
+  integrity sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==
+  dependencies:
+    color-name "1.1.3"
+
+color-name@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
+  integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
+
+concat-map@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+  integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
+
+concurrently@^5.3.0:
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/concurrently/-/concurrently-5.3.0.tgz#7500de6410d043c912b2da27de3202cb489b1e7b"
+  integrity sha512-8MhqOB6PWlBfA2vJ8a0bSFKATOdWlHiQlk11IfmQBPaHVP8oP2gsh2MObE6UR3hqDHqvaIvLTyceNW6obVuFHQ==
+  dependencies:
+    chalk "^2.4.2"
+    date-fns "^2.0.1"
+    lodash "^4.17.15"
+    read-pkg "^4.0.1"
+    rxjs "^6.5.2"
+    spawn-command "^0.0.2-1"
+    supports-color "^6.1.0"
+    tree-kill "^1.2.2"
+    yargs "^13.3.0"
+
+currently-unhandled@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/currently-unhandled/-/currently-unhandled-0.4.1.tgz#988df33feab191ef799a61369dd76c17adf957ea"
+  integrity sha1-mI3zP+qxke95mmE2nddsF635V+o=
+  dependencies:
+    array-find-index "^1.0.1"
+
+date-fns@^2.0.1:
+  version "2.16.1"
+  resolved "https://registry.yarnpkg.com/date-fns/-/date-fns-2.16.1.tgz#05775792c3f3331da812af253e1a935851d3834b"
+  integrity sha512-sAJVKx/FqrLYHAQeN7VpJrPhagZc9R4ImZIWYRFZaaohR3KzmuK88touwsSwSVT8Qcbd4zoDsnGfX4GFB4imyQ==
+
+dateformat@~1.0.4-1.2.3:
+  version "1.0.12"
+  resolved "https://registry.yarnpkg.com/dateformat/-/dateformat-1.0.12.tgz#9f124b67594c937ff706932e4a642cca8dbbfee9"
+  integrity sha1-nxJLZ1lMk3/3BpMuSmQsyo27/uk=
+  dependencies:
+    get-stdin "^4.0.1"
+    meow "^3.3.0"
+
+decamelize@^1.1.2, decamelize@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
+  integrity sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=
+
+diff@^4.0.1:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
+  integrity sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==
+
+dynamic-dedupe@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/dynamic-dedupe/-/dynamic-dedupe-0.3.0.tgz#06e44c223f5e4e94d78ef9db23a6515ce2f962a1"
+  integrity sha1-BuRMIj9eTpTXjvnbI6ZRXOL5YqE=
+  dependencies:
+    xtend "^4.0.0"
+
+emoji-regex@^7.0.1:
+  version "7.0.3"
+  resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
+  integrity sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==
+
+error-ex@^1.2.0, error-ex@^1.3.1:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
+  integrity sha512-7dFHNmqeFSEt2ZBsCriorKnn3Z2pj+fd9kmI6QoWw4//DL+icEBfc0U7qJCisqrTsKTjw4fNFy2pW9OqStD84g==
+  dependencies:
+    is-arrayish "^0.2.1"
+
+escape-string-regexp@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
+  integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
+
+fill-range@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-7.0.1.tgz#1919a6a7c75fe38b2c7c77e5198535da9acdda40"
+  integrity sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==
+  dependencies:
+    to-regex-range "^5.0.1"
+
+find-up@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-1.1.2.tgz#6b2e9822b1a2ce0a60ab64d610eccad53cb24d0f"
+  integrity sha1-ay6YIrGizgpgq2TWEOzK1TyyTQ8=
+  dependencies:
+    path-exists "^2.0.0"
+    pinkie-promise "^2.0.0"
+
+find-up@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-3.0.0.tgz#49169f1d7993430646da61ecc5ae355c21c97b73"
+  integrity sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==
+  dependencies:
+    locate-path "^3.0.0"
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+  integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=
+
+fsevents@~2.1.2:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.1.3.tgz#fb738703ae8d2f9fe900c33836ddebee8b97f23e"
+  integrity sha512-Auw9a4AxqWpa9GUfj370BMPzzyncfBABW8Mab7BGWBYDj4Isgq+cDKtx0i6u9jcX9pQDnswsaaOTgTmA5pEjuQ==
+
+get-caller-file@^2.0.1:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
+  integrity sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==
+
+get-stdin@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-4.0.1.tgz#b968c6b0a04384324902e8bf1a5df32579a450fe"
+  integrity sha1-uWjGsKBDhDJJAui/Gl3zJXmkUP4=
+
+glob-parent@~5.1.0:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-5.1.1.tgz#b6c1ef417c4e5663ea498f1c45afac6916bbc229"
+  integrity sha512-FnI+VGOpnlGHWZxthPGR+QhR78fuiK0sNLkHQv+bL9fQi57lNNdquIbna/WrfROrolq8GK5Ek6BiMwqL/voRYQ==
+  dependencies:
+    is-glob "^4.0.1"
+
+glob@^7.1.3:
+  version "7.1.6"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
+  integrity sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+google-protobuf@^3.13.0, google-protobuf@^3.6.1:
+  version "3.13.0"
+  resolved "https://registry.yarnpkg.com/google-protobuf/-/google-protobuf-3.13.0.tgz#909c5983d75dd6101ed57c79e0528d000cdc3251"
+  integrity sha512-ZIf3qfLFayVrPvAjeKKxO5FRF1/NwRxt6Dko+fWEMuHwHbZx8/fcaAao9b0wCM6kr8qeg2te8XTpyuvKuD9aKw==
+
+graceful-fs@^4.1.2:
+  version "4.2.4"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.4.tgz#2256bde14d3632958c465ebc96dc467ca07a29fb"
+  integrity sha512-WjKPNJF79dtJAVniUlGGWHYGz2jWxT6VhN/4m1NdkbZ2nOsEF+cI1Edgql5zCRhs/VsQYRvrXctxktVXZUkixw==
+
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+  integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
+
+hosted-git-info@^2.1.4:
+  version "2.8.8"
+  resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.8.tgz#7539bd4bc1e0e0a895815a2e0262420b12858488"
+  integrity sha512-f/wzC2QaWBs7t9IYqB4T3sR1xviIViXJRJTWBlx2Gf3g0Xi5vI7Yy4koXQ1c9OYDGHN9sBy1DQ2AB8fqZBWhUg==
+
+indent-string@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/indent-string/-/indent-string-2.1.0.tgz#8e2d48348742121b4a8218b7a137e9a52049dc80"
+  integrity sha1-ji1INIdCEhtKghi3oTfppSBJ3IA=
+  dependencies:
+    repeating "^2.0.0"
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  integrity sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
+  integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
+
+is-arrayish@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
+  integrity sha1-d8mYQFJ6qOyxqLppe4BkWnqSap0=
+
+is-binary-path@~2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-binary-path/-/is-binary-path-2.1.0.tgz#ea1f7f3b80f064236e83470f86c09c254fb45b09"
+  integrity sha512-ZMERYes6pDydyuGidse7OsHxtbI7WVeUEozgR/g7rd0xUimYNlvZRE/K2MgZTjWy725IfelLeVcEM97mmtRGXw==
+  dependencies:
+    binary-extensions "^2.0.0"
+
+is-extglob@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
+  integrity sha1-qIwCU1eR8C7TfHahueqXc8gz+MI=
+
+is-finite@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-finite/-/is-finite-1.1.0.tgz#904135c77fb42c0641d6aa1bcdbc4daa8da082f3"
+  integrity sha512-cdyMtqX/BOqqNBBiKlIVkytNHm49MtMlYyn1zxzvJKWmFMlGzm+ry5BBfYyeY9YmNKbRSo/o7OX9w9ale0wg3w==
+
+is-fullwidth-code-point@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
+  integrity sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=
+
+is-glob@^4.0.1, is-glob@~4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.1.tgz#7567dbe9f2f5e2467bc77ab83c4a29482407a5dc"
+  integrity sha512-5G0tKtBTFImOqDnLB2hG6Bp2qcKEFduo4tZu9MT/H6NQv/ghhy30o55ufafxJ/LdH79LLs2Kfrn85TLKyA7BUg==
+  dependencies:
+    is-extglob "^2.1.1"
+
+is-number@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/is-number/-/is-number-7.0.0.tgz#7535345b896734d5f80c4d06c50955527a14f12b"
+  integrity sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==
+
+is-utf8@^0.2.0:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/is-utf8/-/is-utf8-0.2.1.tgz#4b0da1442104d1b336340e80797e865cf39f7d72"
+  integrity sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=
+
+json-parse-better-errors@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz#bb867cfb3450e69107c131d1c514bab3dc8bcaa9"
+  integrity sha512-mrqyZKfX5EhL7hvqcV6WG1yYjnjeuYDzDhhcAAUrq8Po85NBQBJP+ZDUT75qZQ98IkUoBqdkExkukOU7Ts2wrw==
+
+load-json-file@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
+  integrity sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=
+  dependencies:
+    graceful-fs "^4.1.2"
+    parse-json "^2.2.0"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+    strip-bom "^2.0.0"
+
+locate-path@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
+  integrity sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==
+  dependencies:
+    p-locate "^3.0.0"
+    path-exists "^3.0.0"
+
+lodash@^4.17.15:
+  version "4.17.20"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
+  integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
+
+loud-rejection@^1.0.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/loud-rejection/-/loud-rejection-1.6.0.tgz#5b46f80147edee578870f086d04821cf998e551f"
+  integrity sha1-W0b4AUft7leIcPCG0Eghz5mOVR8=
+  dependencies:
+    currently-unhandled "^0.4.1"
+    signal-exit "^3.0.0"
+
+make-error@^1.1.1:
+  version "1.3.6"
+  resolved "https://registry.yarnpkg.com/make-error/-/make-error-1.3.6.tgz#2eb2e37ea9b67c4891f684a1394799af484cf7a2"
+  integrity sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==
+
+map-obj@^1.0.0, map-obj@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/map-obj/-/map-obj-1.0.1.tgz#d933ceb9205d82bdcf4886f6742bdc2b4dea146d"
+  integrity sha1-2TPOuSBdgr3PSIb2dCvcK03qFG0=
+
+meow@^3.3.0:
+  version "3.7.0"
+  resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
+  integrity sha1-cstmi0JSKCkKu/qFaJJYcwioAfs=
+  dependencies:
+    camelcase-keys "^2.0.0"
+    decamelize "^1.1.2"
+    loud-rejection "^1.0.0"
+    map-obj "^1.0.1"
+    minimist "^1.1.3"
+    normalize-package-data "^2.3.4"
+    object-assign "^4.0.1"
+    read-pkg-up "^1.0.1"
+    redent "^1.0.0"
+    trim-newlines "^1.0.0"
+
+minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
+  dependencies:
+    brace-expansion "^1.1.7"
+
+minimist@^1.1.3, minimist@^1.2.5:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
+  integrity sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==
+
+mkdirp@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
+  integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
+
+normalize-package-data@^2.3.2, normalize-package-data@^2.3.4:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.5.0.tgz#e66db1838b200c1dfc233225d12cb36520e234a8"
+  integrity sha512-/5CMN3T0R4XTj4DcGaexo+roZSdSFW/0AOOTROrjxzCG1wrWXEsGbRKevjlIL+ZDE4sZlJr5ED4YW0yqmkK+eA==
+  dependencies:
+    hosted-git-info "^2.1.4"
+    resolve "^1.10.0"
+    semver "2 || 3 || 4 || 5"
+    validate-npm-package-license "^3.0.1"
+
+normalize-path@^3.0.0, normalize-path@~3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
+  integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
+
+object-assign@^4.0.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
+  integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
+
+once@^1.3.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
+  dependencies:
+    wrappy "1"
+
+p-limit@^2.0.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.3.0.tgz#3dd33c647a214fdfffd835933eb086da0dc21db1"
+  integrity sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==
+  dependencies:
+    p-try "^2.0.0"
+
+p-locate@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-3.0.0.tgz#322d69a05c0264b25997d9f40cd8a891ab0064a4"
+  integrity sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==
+  dependencies:
+    p-limit "^2.0.0"
+
+p-try@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
+  integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
+
+parse-json@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-2.2.0.tgz#f480f40434ef80741f8469099f8dea18f55a4dc9"
+  integrity sha1-9ID0BDTvgHQfhGkJn43qGPVaTck=
+  dependencies:
+    error-ex "^1.2.0"
+
+parse-json@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-4.0.0.tgz#be35f5425be1f7f6c747184f98a788cb99477ee0"
+  integrity sha1-vjX1Qlvh9/bHRxhPmKeIy5lHfuA=
+  dependencies:
+    error-ex "^1.3.1"
+    json-parse-better-errors "^1.0.1"
+
+path-exists@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-2.1.0.tgz#0feb6c64f0fc518d9a754dd5efb62c7022761f4b"
+  integrity sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=
+  dependencies:
+    pinkie-promise "^2.0.0"
+
+path-exists@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
+  integrity sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=
+
+path-is-absolute@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+  integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
+
+path-parse@^1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
+  integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
+
+path-type@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/path-type/-/path-type-1.1.0.tgz#59c44f7ee491da704da415da5a4070ba4f8fe441"
+  integrity sha1-WcRPfuSR2nBNpBXaWkBwuk+P5EE=
+  dependencies:
+    graceful-fs "^4.1.2"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+
+picomatch@^2.0.4, picomatch@^2.2.1:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
+  integrity sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==
+
+pify@^2.0.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
+  integrity sha1-7RQaasBDqEnqWISY59yosVMw6Qw=
+
+pify@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-3.0.0.tgz#e5a4acd2c101fdf3d9a4d07f0dbc4db49dd28176"
+  integrity sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=
+
+pinkie-promise@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/pinkie-promise/-/pinkie-promise-2.0.1.tgz#2135d6dfa7a358c069ac9b178776288228450ffa"
+  integrity sha1-ITXW36ejWMBprJsXh3YogihFD/o=
+  dependencies:
+    pinkie "^2.0.0"
+
+pinkie@^2.0.0:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
+  integrity sha1-clVrgM+g1IqXToDnckjoDtT3+HA=
+
+read-pkg-up@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-1.0.1.tgz#9d63c13276c065918d57f002a57f40a1b643fb02"
+  integrity sha1-nWPBMnbAZZGNV/ACpX9AobZD+wI=
+  dependencies:
+    find-up "^1.0.0"
+    read-pkg "^1.0.0"
+
+read-pkg@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-1.1.0.tgz#f5ffaa5ecd29cb31c0474bca7d756b6bb29e3f28"
+  integrity sha1-9f+qXs0pyzHAR0vKfXVra7KePyg=
+  dependencies:
+    load-json-file "^1.0.0"
+    normalize-package-data "^2.3.2"
+    path-type "^1.0.0"
+
+read-pkg@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-4.0.1.tgz#963625378f3e1c4d48c85872b5a6ec7d5d093237"
+  integrity sha1-ljYlN48+HE1IyFhytabsfV0JMjc=
+  dependencies:
+    normalize-package-data "^2.3.2"
+    parse-json "^4.0.0"
+    pify "^3.0.0"
+
+readdirp@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-3.4.0.tgz#9fdccdf9e9155805449221ac645e8303ab5b9ada"
+  integrity sha512-0xe001vZBnJEK+uKcj8qOhyAKPzIT+gStxWr3LCB0DwcXR5NZJ3IaC+yGnHCYzB/S7ov3m3EEbZI2zeNvX+hGQ==
+  dependencies:
+    picomatch "^2.2.1"
+
+redent@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/redent/-/redent-1.0.0.tgz#cf916ab1fd5f1f16dfb20822dd6ec7f730c2afde"
+  integrity sha1-z5Fqsf1fHxbfsggi3W7H9zDCr94=
+  dependencies:
+    indent-string "^2.1.0"
+    strip-indent "^1.0.1"
+
+repeating@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/repeating/-/repeating-2.0.1.tgz#5214c53a926d3552707527fbab415dbc08d06dda"
+  integrity sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=
+  dependencies:
+    is-finite "^1.0.0"
+
+require-directory@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
+  integrity sha1-jGStX9MNqxyXbiNE/+f3kqam30I=
+
+require-main-filename@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-2.0.0.tgz#d0b329ecc7cc0f61649f62215be69af54aa8989b"
+  integrity sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==
+
+resolve@^1.0.0, resolve@^1.10.0:
+  version "1.17.0"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.17.0.tgz#b25941b54968231cc2d1bb76a79cb7f2c0bf8444"
+  integrity sha512-ic+7JYiV8Vi2yzQGFWOkiZD5Z9z7O2Zhm9XMaTxdJExKasieFCr+yXZ/WmXsckHiKl12ar0y6XiXDx3m4RHn1w==
+  dependencies:
+    path-parse "^1.0.6"
+
+rimraf@^2.6.1:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.7.1.tgz#35797f13a7fdadc566142c29d4f07ccad483e3ec"
+  integrity sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==
+  dependencies:
+    glob "^7.1.3"
+
+rxjs@^6.5.2:
+  version "6.6.3"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.3.tgz#8ca84635c4daa900c0d3967a6ee7ac60271ee552"
+  integrity sha512-trsQc+xYYXZ3urjOiJOuCOa5N3jAZ3eiSpQB5hIT8zGlL2QfnHLJ2r7GMkBGuIausdJN1OneaI6gQlsqNHHmZQ==
+  dependencies:
+    tslib "^1.9.0"
+
+"semver@2 || 3 || 4 || 5":
+  version "5.7.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
+  integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
+
+set-blocking@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
+  integrity sha1-BF+XgtARrppoA93TgrJDkrPYkPc=
+
+signal-exit@^3.0.0:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.3.tgz#a1410c2edd8f077b08b4e253c8eacfcaf057461c"
+  integrity sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==
+
+source-map-support@^0.5.12, source-map-support@^0.5.17:
+  version "0.5.19"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
+  integrity sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
+source-map@^0.6.0:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+  integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
+
+spawn-command@^0.0.2-1:
+  version "0.0.2-1"
+  resolved "https://registry.yarnpkg.com/spawn-command/-/spawn-command-0.0.2-1.tgz#62f5e9466981c1b796dc5929937e11c9c6921bd0"
+  integrity sha1-YvXpRmmBwbeW3Fkpk34RycaSG9A=
+
+spdx-correct@^3.0.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/spdx-correct/-/spdx-correct-3.1.1.tgz#dece81ac9c1e6713e5f7d1b6f17d468fa53d89a9"
+  integrity sha512-cOYcUWwhCuHCXi49RhFRCyJEK3iPj1Ziz9DpViV3tbZOwXD49QzIN3MpOLJNxh2qwq2lJJZaKMVw9qNi4jTC0w==
+  dependencies:
+    spdx-expression-parse "^3.0.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-exceptions@^2.1.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/spdx-exceptions/-/spdx-exceptions-2.3.0.tgz#3f28ce1a77a00372683eade4a433183527a2163d"
+  integrity sha512-/tTrYOC7PPI1nUAgx34hUpqXuyJG+DTHJTnIULG4rDygi4xu/tfgmq1e1cIRwRzwZgo4NLySi+ricLkZkw4i5A==
+
+spdx-expression-parse@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/spdx-expression-parse/-/spdx-expression-parse-3.0.1.tgz#cf70f50482eefdc98e3ce0a6833e4a53ceeba679"
+  integrity sha512-cbqHunsQWnJNE6KhVSMsMeH5H/L9EpymbzqTQ3uLwNCLZ1Q481oWaofqH7nO6V07xlXwY6PhQdQ2IedWx/ZK4Q==
+  dependencies:
+    spdx-exceptions "^2.1.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-license-ids@^3.0.0:
+  version "3.0.6"
+  resolved "https://registry.yarnpkg.com/spdx-license-ids/-/spdx-license-ids-3.0.6.tgz#c80757383c28abf7296744998cbc106ae8b854ce"
+  integrity sha512-+orQK83kyMva3WyPf59k1+Y525csj5JejicWut55zeTWANuN17qSiSLUXWtzHeNWORSvT7GLDJ/E/XiIWoXBTw==
+
+string-width@^3.0.0, string-width@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-3.1.0.tgz#22767be21b62af1081574306f69ac51b62203961"
+  integrity sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==
+  dependencies:
+    emoji-regex "^7.0.1"
+    is-fullwidth-code-point "^2.0.0"
+    strip-ansi "^5.1.0"
+
+strip-ansi@^5.0.0, strip-ansi@^5.1.0, strip-ansi@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-5.2.0.tgz#8c9a536feb6afc962bdfa5b104a5091c1ad9c0ae"
+  integrity sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==
+  dependencies:
+    ansi-regex "^4.1.0"
+
+strip-bom@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-2.0.0.tgz#6219a85616520491f35788bdbf1447a99c7e6b0e"
+  integrity sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=
+  dependencies:
+    is-utf8 "^0.2.0"
+
+strip-bom@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-3.0.0.tgz#2334c18e9c759f7bdd56fdef7e9ae3d588e68ed3"
+  integrity sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=
+
+strip-indent@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/strip-indent/-/strip-indent-1.0.1.tgz#0c7962a6adefa7bbd4ac366460a638552ae1a0a2"
+  integrity sha1-DHlipq3vp7vUrDZkYKY4VSrhoKI=
+  dependencies:
+    get-stdin "^4.0.1"
+
+strip-json-comments@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
+  integrity sha1-PFMZQukIwml8DsNEhYwobHygpgo=
+
+supports-color@^5.3.0:
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
+  integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
+  dependencies:
+    has-flag "^3.0.0"
+
+supports-color@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-6.1.0.tgz#0764abc69c63d5ac842dd4867e8d025e880df8f3"
+  integrity sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==
+  dependencies:
+    has-flag "^3.0.0"
+
+to-regex-range@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/to-regex-range/-/to-regex-range-5.0.1.tgz#1648c44aae7c8d988a326018ed72f5b4dd0392e4"
+  integrity sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==
+  dependencies:
+    is-number "^7.0.0"
+
+tree-kill@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.2.2.tgz#4ca09a9092c88b73a7cdc5e8a01b507b0790a0cc"
+  integrity sha512-L0Orpi8qGpRG//Nd+H90vFB+3iHnue1zSSGmNOOCh1GLJ7rUKVwV2HvijphGQS2UmhUZewS9VgvxYIdgr+fG1A==
+
+trim-newlines@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/trim-newlines/-/trim-newlines-1.0.0.tgz#5887966bb582a4503a41eb524f7d35011815a613"
+  integrity sha1-WIeWa7WCpFA6QetST301ARgVphM=
+
+ts-node-dev@^1.0.0-pre.44:
+  version "1.0.0-pre.62"
+  resolved "https://registry.yarnpkg.com/ts-node-dev/-/ts-node-dev-1.0.0-pre.62.tgz#835644c43669b659a880379b9d06df86cef665ad"
+  integrity sha512-hfsEuCqUZOVnZ86l7A3icxD1nFt1HEmLVbx4YOHCkrbSHPBNWcw+IczAPZo3zz7YiOm9vs0xG6OENNrkgm89tQ==
+  dependencies:
+    chokidar "^3.4.0"
+    dateformat "~1.0.4-1.2.3"
+    dynamic-dedupe "^0.3.0"
+    minimist "^1.2.5"
+    mkdirp "^1.0.4"
+    resolve "^1.0.0"
+    rimraf "^2.6.1"
+    source-map-support "^0.5.12"
+    tree-kill "^1.2.2"
+    ts-node "^8.10.2"
+    tsconfig "^7.0.0"
+
+ts-node@^8.10.2:
+  version "8.10.2"
+  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-8.10.2.tgz#eee03764633b1234ddd37f8db9ec10b75ec7fb8d"
+  integrity sha512-ISJJGgkIpDdBhWVu3jufsWpK3Rzo7bdiIXJjQc0ynKxVOVcg2oIrf2H2cejminGrptVc6q6/uynAHNCuWGbpVA==
+  dependencies:
+    arg "^4.1.0"
+    diff "^4.0.1"
+    make-error "^1.1.1"
+    source-map-support "^0.5.17"
+    yn "3.1.1"
+
+ts-protoc-gen@^0.13.0:
+  version "0.13.0"
+  resolved "https://registry.yarnpkg.com/ts-protoc-gen/-/ts-protoc-gen-0.13.0.tgz#2763ae4e4a1a7d7001d53d2f3043357c691701ea"
+  integrity sha512-j18X4rkDBbG/ZHUJy88WFeZP6mStGow5uREaohowlHXTu3/N7WcpyPhb7Vh6wN38ERmc/AkT9gqT98+vtlRhJA==
+  dependencies:
+    google-protobuf "^3.6.1"
+
+tsconfig@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/tsconfig/-/tsconfig-7.0.0.tgz#84538875a4dc216e5c4a5432b3a4dec3d54e91b7"
+  integrity sha512-vZXmzPrL+EmC4T/4rVlT2jNVMWCi/O4DIiSj3UHg1OE5kCKbk4mfrXc6dZksLgRM/TZlKnousKH9bbTazUWRRw==
+  dependencies:
+    "@types/strip-bom" "^3.0.0"
+    "@types/strip-json-comments" "0.0.30"
+    strip-bom "^3.0.0"
+    strip-json-comments "^2.0.0"
+
+tslib@^1.9.0:
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.13.0.tgz#c881e13cc7015894ed914862d276436fa9a47043"
+  integrity sha512-i/6DQjL8Xf3be4K/E6Wgpekn5Qasl1usyw++dAA35Ue5orEn65VIxOA+YvNNl9HV3qv70T7CNwjODHZrLwvd1Q==
+
+typescript@^3.8.3:
+  version "3.9.7"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
+  integrity sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==
+
+validate-npm-package-license@^3.0.1:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz#fc91f6b9c7ba15c857f4cb2c5defeec39d4f410a"
+  integrity sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==
+  dependencies:
+    spdx-correct "^3.0.0"
+    spdx-expression-parse "^3.0.0"
+
+which-module@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
+  integrity sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=
+
+wrap-ansi@^5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-5.1.0.tgz#1fd1f67235d5b6d0fee781056001bfb694c03b09"
+  integrity sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==
+  dependencies:
+    ansi-styles "^3.2.0"
+    string-width "^3.0.0"
+    strip-ansi "^5.0.0"
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
+
+xtend@^4.0.0:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
+  integrity sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==
+
+y18n@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
+  integrity sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==
+
+yargs-parser@^13.1.2:
+  version "13.1.2"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-13.1.2.tgz#130f09702ebaeef2650d54ce6e3e5706f7a4fb38"
+  integrity sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==
+  dependencies:
+    camelcase "^5.0.0"
+    decamelize "^1.2.0"
+
+yargs@^13.3.0:
+  version "13.3.2"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-13.3.2.tgz#ad7ffefec1aa59565ac915f82dccb38a9c31a2dd"
+  integrity sha512-AX3Zw5iPruN5ie6xGRIDgqkT+ZhnRlZMLMHAs8tg7nRruy2Nb+i5o9bwghAogtM08q1dpr2LVoS8KSTMYpWXUw==
+  dependencies:
+    cliui "^5.0.0"
+    find-up "^3.0.0"
+    get-caller-file "^2.0.1"
+    require-directory "^2.1.1"
+    require-main-filename "^2.0.0"
+    set-blocking "^2.0.0"
+    string-width "^3.0.0"
+    which-module "^2.0.0"
+    y18n "^4.0.0"
+    yargs-parser "^13.1.2"
+
+yn@3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/yn/-/yn-3.1.1.tgz#1e87401a09d767c1d5eab26a6e4c185182d2eb50"
+  integrity sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==