Differ identities used by multiple players by using a kind of player index

If an identity is used by more than one player, its id and name is appended with an index.
By this the client in chat is unique to a user while he still can't be identified / is masked by his ingame identity.

src_coffee/server/clientidentity.coffee

@@ -31,6 +31,7 @@ class ClientIdentity
             return new ClientIdentity
                 id: data.id
                 name: data.name
+                title: data.title
                 idGame: data.idGame
                 idUser: data.idUser
                 securityToken: data.token

src_coffee/server/database.coffee

@@ -377,6 +377,7 @@ class Database
     # @param idGame [int] The id of the player's game world as given by a client on logon.
     # @return [promise] A promise, resolving to a data map with keys 
     #   `name` (The player's name for the chat), 
+    #   `title` (An optional more detail name for the chat, defaults to the name), 
     #   `id` (The id of the player for the chat), 
     #   `idGame` (Should equal idGame), 
     #   `idUser` (The id of the player's account) and 
@@ -400,12 +401,35 @@ class Database
                   "
             return @_readSimpleData(sql, true)
+        # Read an identity sub id for cases where the fetched game identity is used by more than one player
         promise = promise.then (playerData) =>
+            sql = "
+                    SELECT `UserID` AS `user_id`
+                    FROM `#{Config.SQL_TABLES.PLAYER_GAMES}`
+                    WHERE `GalaxyID`=#{@_toQuery(idGame)}
+                      AND `FolkID`=#{@_toQuery(playerData.game_identity_id)}
+                    ORDER BY `UserID` ASC
+                  "
+            innerPromise = @_readMultipleData(sql)
+            innerPromise = innerPromise.then (identityPlayersListdata) =>
+                if identityPlayersListdata.length > 1
+                    playerItem = identityPlayersListdata.find (item, idx) ->
+                        return ("#{item.user_id}" is "#{idUser}")
+                    playerIndex = identityPlayersListdata.indexOf(playerItem)
+                    playerData.game_identity_sub_id = playerIndex + 1  # Add sub id to result data
+                return playerData
+            return innerPromise
+
+        # Build final result
+        promise = promise.then (playerData) =>
+            idSub = playerData.game_identity_sub_id or 0
+            nameNumber = if idSub then "\##{idSub}" else ''
             return {
-                id: playerData.game_identity_id
+                id: "#{playerData.game_identity_id}_#{idSub}"
                 idGame: idGame
                 idUser: idUser
-                name: playerData.game_identity_name
+                name: "#{playerData.game_identity_name} #{nameNumber}".trim()
+                title: "#{playerData.game_identity_name} - Player #{nameNumber}" if nameNumber
                 token: @_getSecurityToken(idUser, playerData)
             }