Trying to search for bestOccludedRelay.
Trying to search for bestOccludedRelay.

--- a/ARMapRenderer.cs
+++ b/ARMapRenderer.cs
@@ -192,60 +192,64 @@
 
 				LineRenderer renderer = this[relay.vessel.id];
 
-				if (relay.CanTransmit())
-				{
-					Vector3d start;
-					Vector3d end;
-
-					renderer.enabled = true;
-
-					if (relay.transmitDistance < relay.nominalTransmitDistance)
+				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)
 					{
-						renderer.SetColors(Color.green, Color.green);
+						end = ScaledSpace.LocalToScaledSpace(relay.bestOccludedRelay.vessel.GetWorldPos3D());
 					}
 					else
 					{
-						renderer.SetColors(Color.yellow, Color.yellow);
-					}
-
-					start = ScaledSpace.LocalToScaledSpace(relay.vessel.GetWorldPos3D());
-
-					if (relay.nearestRelay == null)
-					{
 						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;
-				}
+				}
+				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);
 		}

--- a/AntennaRelay.cs
+++ b/AntennaRelay.cs
@@ -296,24 +296,47 @@
 				)
 				{
 					this.firstOccludingBody = fob;
+
 					Tools.PostDebugMessage(
 						this,
-						"Vessel {0} discarded because we do not have line of sight.",
-						potentialVessel.vesselName
+						"Vessel {0} discarded because we do not have line of sight." +
+						"\npotentialSqrDistance: {1}, bestOccludedSqrDistance: {2}, maxTransmitSqrDistance: {3}" +
+						"\npotentialSqrDistance < bestOccludedSqrDistance: {4}" +
+						"\npotentialSqrDistance < (this.maxTransmitDistance * this.maxTransmitDistance): {5}",
+						potentialVessel.vesselName,
+						potentialSqrDistance, bestOccludedSqrDistance, this.maxTransmitDistance * this.maxTransmitDistance,
+						potentialSqrDistance < bestOccludedSqrDistance,
+						potentialSqrDistance < (this.maxTransmitDistance * this.maxTransmitDistance)
 					);
 
 					if (
-						potentialSqrDistance < bestOccludedSqrDistance &&
-						potentialSqrDistance < this.maxTransmitDistance
+						(potentialSqrDistance < bestOccludedSqrDistance) &&
+						(potentialSqrDistance < (this.maxTransmitDistance * this.maxTransmitDistance))
 					)
 					{
+						Tools.PostDebugMessage(
+							this,
+							"Checking {0} relays on {1}.",
+							potentialVessel.GetAntennaRelays().Count(),
+							potentialVessel
+						);
+
 						foreach (IAntennaRelay occludedRelay in potentialVessel.GetAntennaRelays())
 						{
+							Tools.PostDebugMessage(this, "Checking candidate for bestOccludedRelay: {0}" +
+								"\n\tCanTransmit: {1}", occludedRelay, occludedRelay.CanTransmit());
 							if (occludedRelay.CanTransmit())
 							{
 								this.bestOccludedRelay = occludedRelay;
 								this.firstOccludingBody = fob;
 								bestOccludedSqrDistance = potentialSqrDistance;
+								Tools.PostDebugMessage(this, "Found new bestOccludedRelay: {0}" +
+									"\nfirstOccludingBodoy: {1}" +
+									"\nbestOccludedSqrDistance: {2}",
+									occludedRelay,
+									fob,
+									potentialSqrDistance
+								);
 								break;
 							}
 						}
@@ -369,7 +392,7 @@
 			this.moduleRef = module;
 
 			this.searchTimer = new System.Diagnostics.Stopwatch();
-			this.millisecondsBetweenSearches = 5000;
+			this.millisecondsBetweenSearches = 1250;
 		}
 	}
 }

--- a/IAntennaRelay.cs
+++ b/IAntennaRelay.cs
@@ -44,6 +44,8 @@
 
 		IAntennaRelay nearestRelay { get; }
 
+		IAntennaRelay bestOccludedRelay { get; }
+
 		/// <summary>
 		/// Gets the distance to the nearest relay or Kerbin, whichever is closer.
 		/// </summary>

--- a/ModuleLimitedDataTransmitter.cs
+++ b/ModuleLimitedDataTransmitter.cs
@@ -138,11 +138,29 @@
 			}
 		}
 
+		public IAntennaRelay bestOccludedRelay
+		{
+			get
+			{
+				if (this.relay == null)
+				{
+					return null;
+				}
+
+				return this.relay.bestOccludedRelay;
+			}
+		}
+
 		// Returns the distance to the nearest relay or Kerbin, whichever is closer.
 		public double transmitDistance
 		{
 			get
 			{
+				if (this.relay == null)
+				{
+					return double.PositiveInfinity;
+				}
+
 				return this.relay.transmitDistance;
 			}
 		}
@@ -158,10 +176,8 @@
 		// Returns the maximum distance this module can transmit
 		public float maxTransmitDistance
 		{
-			get
-			{
-				return Mathf.Sqrt (this.maxPowerFactor) * this.nominalRange;
-			}
+			get;
+			private set;
 		}
 
 		public CelestialBody firstOccludingBody
@@ -280,6 +296,7 @@
 
 			this._basepacketSize = base.packetSize;
 			this._basepacketResourceCost = base.packetResourceCost;
+			this.maxTransmitDistance = Mathf.Sqrt(this.maxPowerFactor) * this.nominalRange;
 
 			Tools.PostDebugMessage(string.Format(
 				"{0} loaded:\n" +
@@ -667,7 +684,7 @@
 		}
 
 		// When debugging, it's nice to have a button that just tells you everything.
-		#if DEBUG
+
 		[KSPEvent (guiName = "Show Debug Info", active = true, guiActive = true)]
 		public void DebugInfo()
 		{
@@ -688,7 +705,9 @@
 				"DataResourceCost: {10}\n" +
 				"TransmitterScore: {11}\n" +
 				"NearestRelay: {12}\n" +
-				"Vessel ID: {13}",
+				"BestOccludedRelay: {13}\n" +
+				"KerbinDirect: {14}\n" +
+				"Vessel ID: {15}",
 				this.name,
 				this._basepacketSize,
 				base.packetSize,
@@ -701,10 +720,13 @@
 				this.DataRate,
 				this.DataResourceCost,
 				ScienceUtil.GetTransmitterScore(this),
-				this.relay.FindNearestRelay(),
+				this.relay.nearestRelay == null ? "null" : this.relay.nearestRelay.ToString(),
+				this.relay.bestOccludedRelay == null ? "null" : this.relay.bestOccludedRelay.ToString(),
+				this.KerbinDirect,
 				this.vessel.id
 				);
-			Tools.PostDebugMessage(msg);
+
+			Tools.PostLogMessage(msg);
 		}
 
 		[KSPEvent (guiName = "Dump Vessels", active = true, guiActive = true)]
@@ -722,11 +744,10 @@
 			Tools.PostDebugMessage(sb.ToString());
 		}
 
-		[KSPEvent (guiName = "Dump RelayDB", active = true, guiActive = true)]
+		/*[KSPEvent (guiName = "Dump RelayDB", active = true, guiActive = true)]
 		public void DumpRelayDB()
 		{
 			RelayDatabase.Instance.Dump();
-		}
-		#endif
+		}*/
 	}
 }