* `Vagrant ssh`: connect on your VM Vagrant.
* `Vagrant halt`: stop your VM Vagrant.
* `Vagrant destroy`: delete your VM Vagrant.
+
+## Features developed
+You have more details of features developed in back [README.md](./back/README.md).
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+# Back Features
+
+## Login
+To start your game, you must authenticate on the server back.
+When you are authenticated, the back server return token and rooms started.
+```
+POST => /login
+Params :
+ email: email of user.
+```
+
+## Join a room
+When a user is connected, the user can join a room.
+So you must send emit `join-room` with information user:
+```
+Socket.io => 'join-room'
+
+ userId: user id of gamer
+ roomId: room id when user enter in game
+ position: {
+ x: position x on map
+ y: position y on map
+ }
+```
+All data users are stocked on socket client.
+
+## Send position user
+When user move on the map, you can share new position on back with event `user-position`.
+The information sent:
+```
+Socket.io => 'user-position'
+
+ userId: user id of gamer
+ roomId: room id when user enter in game
+ position: {
+ x: position x on map
+ y: position y on map
+ }
+```
+All data users are updated on socket client.
+
+## Receive positions of all users
+The application sends position of all users in each room in every few 10 milliseconds.
+The data will pushed on event `user-position`:
+```
+Socket.io => 'user-position'
+
+ [
+ {
+ userId: user id of gamer
+ roomId: room id when user enter in game
+ position: {
+ x: position x on map
+ y: position y on map
+ }
+ },
+ ...
+ ]
+```
+
+[<<< back](../README.md)
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