From 0a82e1b68ef4864bd9ef84209c030dc02baea403 Mon Sep 17 00:00:00 2001
From: grilledham <jrdgillham@gmail.com>
Date: Sat, 1 Dec 2018 10:49:14 +0000
Subject: [PATCH] query_online_players

---
 features/server.lua          | 22 ++++++++++++++++++++++
 features/server_commands.lua |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/features/server.lua b/features/server.lua
index d4c3f2b8..00842b45 100644
--- a/features/server.lua
+++ b/features/server.lua
@@ -26,6 +26,7 @@ local data_get_all_tag = '[DATA-GET-ALL]'
 local data_tracked_tag = '[DATA-TRACKED]'
 local ban_sync_tag = '[BAN-SYNC]'
 local unbanned_sync_tag = '[UNBANNED-SYNC]'
+local query_players_tag = '[QUERY-PLAYERS]'
 
 Public.raw_print = raw_print
 
@@ -440,4 +441,25 @@ function Public.unban_non_sync(PlayerSpecification)
     game.unban_player(PlayerSpecification)
 end
 
+--- Called be the web server to re sync which players are online.
+function Public.query_online_players()
+    local message = {query_players_tag, '['}
+
+    for _, p in ipairs(game.connected_players) do
+        table.insert(message, '"')
+        local name = escape(p.name)
+        table.insert(message, name)
+        table.insert(message, '",')
+    end
+
+    if message[#message] == '",' then
+        message[#message] = '"'
+    end
+
+    table.insert(message, ']')
+
+    message = table.concat(message)
+    raw_print(message)
+end
+
 return Public
diff --git a/features/server_commands.lua b/features/server_commands.lua
index 3e860b07..2abca3a7 100644
--- a/features/server_commands.lua
+++ b/features/server_commands.lua
@@ -25,4 +25,6 @@ function ServerCommands.server_started()
     script.raise_event(Server.events.on_server_started, {})
 end
 
+ServerCommands.query_online_players = Server.query_online_players
+
 return ServerCommands