Reorganizes Project (#41)

Projects/Scripts/SpecialSystems/Engines/PreventInaccess.cs

@@ -0,0 +1,89 @@
+using System.Collections.Generic;
+
+namespace Server.Misc
+{
+  /*
+   * This system prevents the inability for server staff to
+   * access their server due to data overflows during login.
+   *
+   * Whenever a staff character's NetState is disposed right after
+   * the login process, the character is moved to and logged out
+   * at a "safe" alternative.
+   *
+   * The location the character was moved from will be reported
+   * to the player upon the next successful login.
+   *
+   * This system does not affect non-staff players.
+   */
+  public static class PreventInaccess
+  {
+    public static readonly bool Enabled = true;
+
+    private static readonly LocationInfo[] m_Destinations =
+    {
+      new LocationInfo(new Point3D(5275, 1163, 0), Map.Felucca), // Jail
+      new LocationInfo(new Point3D(5275, 1163, 0), Map.Trammel),
+      new LocationInfo(new Point3D(5445, 1153, 0), Map.Felucca), // Green acres
+      new LocationInfo(new Point3D(5445, 1153, 0), Map.Trammel)
+    };
+
+    private static Dictionary<Mobile, LocationInfo> m_MoveHistory;
+
+    public static void Initialize()
+    {
+      m_MoveHistory = new Dictionary<Mobile, LocationInfo>();
+
+      if (Enabled)
+        EventSink.Login += OnLogin;
+    }
+
+    public static void OnLogin(LoginEventArgs e)
+    {
+      Mobile from = e.Mobile;
+
+      if (from?.AccessLevel < AccessLevel.Counselor)
+        return;
+
+      if (HasDisconnected(from))
+      {
+        if (!m_MoveHistory.ContainsKey(from))
+          m_MoveHistory[from] = new LocationInfo(from.Location, from.Map);
+
+        LocationInfo dest = GetRandomDestination();
+
+        from.Location = dest.Location;
+        from.Map = dest.Map;
+      }
+      else if (m_MoveHistory.TryGetValue(from, out LocationInfo orig))
+      {
+        from.SendMessage("Your character was moved from {0} ({1}) due to a detected client crash.", orig.Location,
+          orig.Map);
+
+        m_MoveHistory.Remove(from);
+      }
+    }
+
+    private static bool HasDisconnected(Mobile m)
+    {
+      return m.NetState?.Socket == null;
+    }
+
+    private static LocationInfo GetRandomDestination()
+    {
+      return m_Destinations[Utility.Random(m_Destinations.Length)];
+    }
+
+    private class LocationInfo
+    {
+      public LocationInfo(Point3D loc, Map map)
+      {
+        Location = loc;
+        Map = map;
+      }
+
+      public Point3D Location{ get; }
+
+      public Map Map{ get; }
+    }
+  }
+}