Change the way plane changes are acknowledged

Nibriboard/Client/Messages/PlaneChangeOkMessage.cs

@@ -0,0 +1,23 @@
+using System;
+namespace Nibriboard.Client.Messages
+{
+	/// <summary>
+	/// Sent by the server to tell a client that they have switched planes successfully.
+	/// </summary>
+	public class PlaneChangeOkMessage : Message
+	{
+		/// <summary>
+		/// The name of the plane that the client is now on.
+		/// </summary>
+		public string NewPlaneName;
+
+		/// <summary>
+		/// The size of the grid on the plane that the client has switched to.
+		/// </summary>
+		public int GridSize;
+
+		public PlaneChangeOkMessage()
+		{
+		}
+	}
+}

Nibriboard/Client/NibriClient.cs

@@ -314,8 +314,10 @@ namespace Nibriboard.Client
 			CurrentPlane.OnChunkUpdate += handleChunkUpdateEvent;
 
 			// Tell the client that the switch over all went according to plan
-			message.IsOK = true;
-			Send(message);
+			Send(new PlaneChangeOkMessage() {
+				NewPlaneName = message.NewPlaneName,
+				GridSize = CurrentPlane.ChunkSize
+			});
 
 			return Task.CompletedTask;
 		}

Nibriboard/Nibriboard.csproj

@@ -99,6 +99,7 @@
     <Compile Include="Client\LineIncubator.cs" />
     <Compile Include="Client\Messages\LineCompleteMessage.cs" />
     <Compile Include="Client\Messages\ErrorMessage.cs" />
+    <Compile Include="Client\Messages\PlaneChangeOkMessage.cs" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="ClientFiles\index.html" />