Progress on tutorial, gap tweaking (water flows faster from room to room), UPnP error messages, input keys in array, underwater aiming tweaking, tons of misc stuff commit more often ffs

Lidgren.Network/NetServer.cs

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+using System;
+using System.Collections.Generic;
+
+namespace Lidgren.Network
+{
+	/// <summary>
+	/// Specialized version of NetPeer used for "server" peers
+	/// </summary>
+	public class NetServer : NetPeer
+	{
+		/// <summary>
+		/// NetServer constructor
+		/// </summary>
+		public NetServer(NetPeerConfiguration config)
+			: base(config)
+		{
+			config.AcceptIncomingConnections = true;
+		}
+
+		/// <summary>
+		/// Send a message to all connections
+		/// </summary>
+		/// <param name="msg">The message to send</param>
+		/// <param name="method">How to deliver the message</param>
+		public void SendToAll(NetOutgoingMessage msg, NetDeliveryMethod method)
+		{
+			var all = this.Connections;
+			if (all.Count <= 0)
+				return;
+
+			SendMessage(msg, all, method, 0);
+		}
+
+		/// <summary>
+		/// Send a message to all connections except one
+		/// </summary>
+		/// <param name="msg">The message to send</param>
+		/// <param name="method">How to deliver the message</param>
+		/// <param name="except">Don't send to this particular connection</param>
+		/// <param name="sequenceChannel">Which sequence channel to use for the message</param>
+		public void SendToAll(NetOutgoingMessage msg, NetConnection except, NetDeliveryMethod method, int sequenceChannel)
+		{
+			var all = this.Connections;
+			if (all.Count <= 0)
+				return;
+
+			if (except == null)
+			{
+				SendMessage(msg, all, method, sequenceChannel);
+				return;
+			}
+
+			List<NetConnection> recipients = new List<NetConnection>(all.Count - 1);
+			foreach (var conn in all)
+				if (conn != except)
+					recipients.Add(conn);
+
+			if (recipients.Count > 0)
+				SendMessage(msg, recipients, method, sequenceChannel);
+		}
+
+		/// <summary>
+		/// Returns a string that represents this object
+		/// </summary>
+		public override string ToString()
+		{
+			return "[NetServer " + ConnectionsCount + " connections]";
+		}
+	}
+}