source: binary-improvements2/MapRendering/Web/API/GetPlayersLocation.cs@ 384

using System.Collections.Generic;
using AllocsFixes.JSON;
using AllocsFixes.PersistentData;
using HttpListenerRequest = SpaceWizards.HttpListener.HttpListenerRequest;
using HttpListenerResponse = SpaceWizards.HttpListener.HttpListenerResponse;

namespace AllocsFixes.NetConnections.Servers.Web.API {
        public class GetPlayersLocation : WebAPI {
                public override void HandleRequest (HttpListenerRequest _req, HttpListenerResponse _resp, WebConnection _user,
                        int _permissionLevel) {
                        AdminTools admTools = GameManager.Instance.adminTools;
                        PlatformUserIdentifierAbs userId = _user?.UserId;

                        bool listOffline = false;
                        if (_req.QueryString ["offline"] != null) {
                                bool.TryParse (_req.QueryString ["offline"], out listOffline);
                        }

                        bool bViewAll = WebConnection.CanViewAllPlayers (_permissionLevel);

                        JSONArray playersJsResult = new JSONArray ();

                        Players playersList = PersistentContainer.Instance.Players;

                        foreach (KeyValuePair<PlatformUserIdentifierAbs, Player> kvp in playersList.Dict) {
                                if (admTools != null) {
                                        if (admTools.IsBanned (kvp.Key, out _, out _)) {
                                                continue;
                                        }
                                }

                                Player p = kvp.Value;

                                if (listOffline || p.IsOnline) {
                                        if (bViewAll || p.PlatformId.Equals (userId)) {
                                                JSONObject pos = new JSONObject ();
                                                pos.Add ("x", new JSONNumber (p.LastPosition.x));
                                                pos.Add ("y", new JSONNumber (p.LastPosition.y));
                                                pos.Add ("z", new JSONNumber (p.LastPosition.z));

                                                JSONObject pJson = new JSONObject ();
                                                pJson.Add ("steamid", new JSONString (kvp.Key.CombinedString));

                                                //                                      pJson.Add("entityid", new JSONNumber (p.EntityID));
                                                //                    pJson.Add("ip", new JSONString (p.IP));
                                                pJson.Add ("name", new JSONString (p.Name));
                                                pJson.Add ("online", new JSONBoolean (p.IsOnline));
                                                pJson.Add ("position", pos);

                                                //                                      pJson.Add ("totalplaytime", new JSONNumber (p.TotalPlayTime));
                                                //                                      pJson.Add ("lastonline", new JSONString (p.LastOnline.ToString ("s")));
                                                //                                      pJson.Add ("ping", new JSONNumber (p.IsOnline ? p.ClientInfo.ping : -1));

                                                playersJsResult.Add (pJson);
                                        }
                                }
                        }

                        WriteJSON (_resp, playersJsResult);
                }
        }
}