ARMapRenderer: Updated a bit for BadRelayTracking.
ARMapRenderer: Updated a bit for BadRelayTracking.

--- a/ARFlightController.cs
+++ b/ARFlightController.cs
@@ -41,6 +41,8 @@
 		protected Dictionary<ConnectionStatus, string> connectionTextures;
 		protected Dictionary<ConnectionStatus, Texture> appLauncherTextures;
 
+		protected ARMapRenderer mapRenderer;
+
 		protected IButton toolbarButton;
 
 		protected ApplicationLauncherButton appLauncherButton;
@@ -142,6 +144,11 @@
 
 			GameEvents.onGameSceneLoadRequested.Add(this.onSceneChangeRequested);
 			GameEvents.onVesselChange.Add(this.onVesselChange);
+		}
+
+		protected void Start()
+		{
+			this.mapRenderer = MapView.MapCamera.gameObject.AddComponent<ARMapRenderer>();
 		}
 
 		protected void FixedUpdate()
@@ -202,7 +209,7 @@
 				// ...unlock the controls.
 				InputLockManager.RemoveControlLock(this.lockID);
 			}
-
+				
 			if (
 				(this.toolbarButton != null || this.appLauncherButton != null) &&
 				HighLogic.LoadedSceneIsFlight &&
@@ -297,6 +304,11 @@
 		{
 			InputLockManager.RemoveControlLock(this.lockID);
 
+			if (this.mapRenderer != null)
+			{
+				GameObject.Destroy(this.mapRenderer);
+			}
+
 			if (this.toolbarButton != null)
 			{
 				this.toolbarButton.Destroy();

file:b/ARMapRenderer.cs (new)
--- /dev/null
+++ b/ARMapRenderer.cs
@@ -1,1 +1,277 @@
-
+// AntennaRange
+//
+// ARMapRenderer.cs
+//
+// Copyright © 2014, toadicus
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+//    this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice,
+//    this list of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be used
+//    to endorse or promote products derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+using KSP;
+using System;
+using System.Collections.Generic;
+using ToadicusTools;
+using UnityEngine;
+
+namespace AntennaRange
+{
+	public class ARMapRenderer : MonoBehaviour
+	{
+		#region Fields
+		private Dictionary<Guid, LineRenderer> vesselLineRenderers;
+		private Dictionary<Guid, bool> vesselFrameCache;
+		#endregion
+
+		#region Properties
+		public LineRenderer this[Guid idx]
+		{
+			get
+			{
+				if (this.vesselLineRenderers == null)
+				{
+					this.vesselLineRenderers = new Dictionary<Guid, LineRenderer>();
+				}
+
+				if (!this.vesselLineRenderers.ContainsKey(idx))
+				{
+					GameObject obj = new GameObject();
+					obj.layer = 31;
+
+					LineRenderer lr = obj.AddComponent<LineRenderer>();
+
+					lr.SetColors(Color.green, Color.green);
+					lr.material = new Material(Shader.Find("Particles/Additive"));
+					lr.SetVertexCount(2);
+
+					this.vesselLineRenderers[idx] = lr;
+				}
+
+				return this.vesselLineRenderers[idx];
+			}
+		}
+		#endregion
+
+		#region MonoBehaviour Lifecycle
+		private void Awake()
+		{
+			this.vesselLineRenderers = new Dictionary<Guid, LineRenderer>();
+			this.vesselFrameCache = new Dictionary<Guid, bool>();
+		}
+
+		private void OnPreCull()
+		{
+			if (!HighLogic.LoadedSceneIsFlight || !MapView.MapIsEnabled)
+			{
+				this.Cleanup();
+
+				return;
+			}
+
+			Tools.DebugLogger log = Tools.DebugLogger.New(this);
+
+			try
+			{
+				log.AppendFormat("OnPreCull.\n");
+
+				log.AppendFormat("\tMapView: Draw3DLines: {0}\n" +
+					"\tMapView.MapCamera.camera.fieldOfView: {1}\n" +
+					"\tMapView.MapCamera.Distance: {2}\n",
+					MapView.Draw3DLines,
+					MapView.MapCamera.camera.fieldOfView,
+					MapView.MapCamera.Distance
+				);
+
+				this.vesselFrameCache.Clear();
+
+				log.AppendLine("vesselFrameCache cleared.");
+
+				if (FlightGlobals.ready && FlightGlobals.Vessels != null)
+				{
+					log.AppendLine("FlightGlobals ready and Vessels list not null.");
+
+					foreach (Vessel vessel in FlightGlobals.Vessels)
+					{
+						if (vessel == null)
+						{
+							log.AppendFormat("Skipping vessel {0} altogether because it is null.\n");
+							continue;
+						}
+
+						log.AppendFormat("Checking vessel {0}.\n", vessel.vesselName);
+
+						switch (vessel.vesselType)
+						{
+							case VesselType.Debris:
+							case VesselType.EVA:
+							case VesselType.Unknown:
+							case VesselType.SpaceObject:
+								log.AppendFormat("\tDiscarded because vessel is of invalid type {0}\n",
+									vessel.vesselType);
+								continue;
+						}
+
+						log.Append("\tChecking connection status...\n");
+
+						if (vessel.HasConnectedRelay())
+						{
+							log.AppendLine("\tHas a connection, checking for the best relay to use for the line.");
+
+							IAntennaRelay vesselRelay = null;
+							float bestScore = float.PositiveInfinity;
+							float relayScore = float.NaN;
+
+							foreach (IAntennaRelay relay in RelayDatabase.Instance[vessel].Values)
+							{
+								relayScore = (float)relay.transmitDistance / relay.maxTransmitDistance;
+
+								if (relayScore < bestScore)
+								{
+									bestScore = relayScore;
+									vesselRelay = relay as IAntennaRelay;
+								}
+							}
+
+							if (vesselRelay != null)
+							{
+								log.AppendFormat("\t...picked relay {0} with a score of {1}", 
+									vesselRelay, relayScore
+								);
+
+								this.SetRelayVertices(vesselRelay);
+							}
+						}
+						else if (this.vesselLineRenderers.ContainsKey(vessel.id))
+						{
+							log.AppendLine("\tDisabling line because vessel has no connection.");
+							this[vessel.id].enabled = false;
+						}
+					}
+				}
+			}
+			finally
+			{
+				log.Print();
+			}
+		}
+
+		private void OnDestroy()
+		{
+			this.Cleanup();
+
+			print("ARMapRenderer: Destroyed.");
+		}
+		#endregion
+
+		private void SetRelayVertices(IAntennaRelay relay)
+		{
+			do
+			{
+				if (this.vesselFrameCache.ContainsKey(relay.vessel.id))
+				{
+					break;
+				}
+
+				LineRenderer renderer = this[relay.vessel.id];
+
+				Vector3d start;
+				Vector3d end;
+
+				renderer.enabled = true;
+
+				if (relay.transmitDistance < relay.nominalTransmitDistance)
+				{
+					renderer.SetColors(Color.green, Color.green);
+				}
+				else
+				{
+					renderer.SetColors(Color.yellow, Color.yellow);
+				}
+
+				start = ScaledSpace.LocalToScaledSpace(relay.vessel.GetWorldPos3D());
+
+				if (relay.KerbinDirect)
+				{
+					if (relay.firstOccludingBody != null && relay.bestOccludedRelay != null)
+					{
+						end = ScaledSpace.LocalToScaledSpace(relay.bestOccludedRelay.vessel.GetWorldPos3D());
+					}
+					else
+					{
+						end = ScaledSpace.LocalToScaledSpace(AntennaRelay.Kerbin.position);
+					}
+				}
+				else
+				{
+					end = ScaledSpace.LocalToScaledSpace(relay.nearestRelay.vessel.GetWorldPos3D());
+				}
+
+				float lineWidth;
+
+				if (MapView.Draw3DLines)
+				{
+					lineWidth = 0.004f * MapView.MapCamera.Distance;
+				}
+				else
+				{
+					lineWidth = 1f;
+
+					start = MapView.MapCamera.camera.WorldToScreenPoint(start);
+					end = MapView.MapCamera.camera.WorldToScreenPoint(end);
+
+					float d = Screen.height / 2f + 0.01f;
+					start.z = start.z >= 0f ? d : -d;
+					end.z = end.z >= 0f ? d : -d;
+				}
+
+				renderer.SetWidth(lineWidth, lineWidth);
+
+				renderer.SetPosition(0, start);
+				renderer.SetPosition(1, end);
+
+				this.vesselFrameCache[relay.vessel.id] = true;
+
+				relay = relay.nearestRelay;
+			}
+			while (relay != null);
+		}
+
+		public void Cleanup()
+		{
+			if (this.vesselLineRenderers != null && this.vesselLineRenderers.Count > 0)
+			{
+				foreach (LineRenderer lineRenderer in this.vesselLineRenderers.Values)
+				{
+					lineRenderer.enabled = false;
+					GameObject.Destroy(lineRenderer.gameObject);
+				}
+				this.vesselLineRenderers.Clear();
+			}
+
+			if (this.vesselFrameCache != null && this.vesselFrameCache.Count > 0)
+			{
+				this.vesselFrameCache.Clear();
+			}
+		}
+	}
+}
+
+

--- a/AntennaRange.csproj
+++ b/AntennaRange.csproj
@@ -78,6 +78,7 @@
     <Compile Include="RelayExtensions.cs" />
     <Compile Include="ARConfiguration.cs" />
     <Compile Include="ARFlightController.cs" />
+    <Compile Include="ARMapRenderer.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>

--- a/AntennaRelay.cs
+++ b/AntennaRelay.cs
@@ -41,7 +41,7 @@
 	{
 		// We don't have a Bard, so we'll hide Kerbin here.
 		private static CelestialBody _Kerbin;
-		protected static CelestialBody Kerbin
+		public static CelestialBody Kerbin
 		{
 			get
 			{
@@ -142,6 +142,12 @@
 				// .. return the distance to Kerbin
 				return kerbinDistance;
 			}
+		}
+
+		public virtual double nominalTransmitDistance
+		{
+			get;
+			set;
 		}
 
 		/// <summary>
@@ -289,6 +295,7 @@
 					!this.vessel.hasLineOfSightTo(potentialVessel, out fob, ARConfiguration.RadiusRatio)
 				)
 				{
+					this.firstOccludingBody = fob;
 					Tools.PostDebugMessage(
 						this,
 						"Vessel {0} discarded because we do not have line of sight.",

--- a/IAntennaRelay.cs
+++ b/IAntennaRelay.cs
@@ -42,11 +42,15 @@
 		/// <value>The parent Vessel.</value>
 		Vessel vessel { get; }
 
+		IAntennaRelay nearestRelay { get; }
+
 		/// <summary>
 		/// Gets the distance to the nearest relay or Kerbin, whichever is closer.
 		/// </summary>
 		/// <value>The distance to the nearest relay or Kerbin, whichever is closer.</value>
 		double transmitDistance { get; }
+
+		double nominalTransmitDistance { get; }
 
 		/// <summary>
 		/// The maximum distance at which this relay can operate.

--- a/ModuleLimitedDataTransmitter.cs
+++ b/ModuleLimitedDataTransmitter.cs
@@ -125,12 +125,33 @@
 			}
 		}
 
+		public IAntennaRelay nearestRelay
+		{
+			get
+			{
+				if (this.relay == null)
+				{
+					return null;
+				}
+
+				return this.relay.nearestRelay;
+			}
+		}
+
 		// Returns the distance to the nearest relay or Kerbin, whichever is closer.
 		public double transmitDistance
 		{
 			get
 			{
 				return this.relay.transmitDistance;
+			}
+		}
+
+		public double nominalTransmitDistance
+		{
+			get
+			{
+				return this.nominalRange;
 			}
 		}
 
@@ -285,6 +306,7 @@
 			{
 				this.relay = new AntennaRelay(this);
 				this.relay.maxTransmitDistance = this.maxTransmitDistance;
+				this.relay.nominalTransmitDistance = this.nominalRange;
 
 				this.UImaxTransmitDistance = Tools.MuMech_ToSI(this.maxTransmitDistance) + "m";
 

--- a/ProtoAntennaRelay.cs
+++ b/ProtoAntennaRelay.cs
@@ -47,6 +47,14 @@
 			get
 			{
 				return this.protoPart.pVesselRef.vesselRef;
+			}
+		}
+
+		public override double nominalTransmitDistance
+		{
+			get
+			{
+				return this.moduleRef.nominalTransmitDistance;
 			}
 		}