Added UInominalLinkDistance to make action menus more helpful.
Added UInominalLinkDistance to make action menus more helpful.

file:b/.gitattributes (new)
--- /dev/null
+++ b/.gitattributes
@@ -1,1 +1,13 @@
+* text=auto
+* eol=lf
 
+# These files are text and should be normalized (convert crlf => lf)
+*.cs      text diff=csharp
+*.cfg     text
+*.csproj  text
+*.sln     text
+
+# Images should be treated as binary
+# (binary is a macro for -text -diff)
+*.png     binary
+

--- /dev/null
+++ b/ARConfiguration.cs
@@ -1,1 +1,478 @@
-
+// AntennaRange © 2014 toadicus
+//
+// This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a
+// copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
+
+using KSP;
+using System;
+using ToadicusTools;
+using UnityEngine;
+
+namespace AntennaRange
+{
+	/// <summary>
+	/// A <see cref="UnityEngine.MonoBehaviour"/> responsible for managing configuration items for AntennaRange.
+	/// </summary>
+	[KSPAddon(KSPAddon.Startup.SpaceCentre, false)]
+	public class ARConfiguration : MonoBehaviour
+	{
+		private const string WINDOW_POS_KEY = "configWindowPos";
+		private const string REQUIRE_LOS_KEY = "requireLineOfSight";
+		private const string GRACE_RATIO_KEY = "graceRatio";
+		private const string REQUIRE_PROBE_CONNECTION_KEY = "requireConnectionForControl";
+		private const string FIXED_POWER_KEY = "fixedPowerCost";
+		private const string PRETTY_LINES_KEY = "drawPrettyLines";
+		private const string UPDATE_DELAY_KEY = "updateDelay";
+		private const string USE_ADDITIVE_KEY = "useAdditiveRanges";
+
+		private const string TRACKING_STATION_RANGES_KEY = "TRACKING_STATION_RANGES";
+		private const string RANGE_KEY = "range";
+
+		/// <summary>
+		/// Indicates whether connections require line of sight.
+		/// </summary>
+		public static bool RequireLineOfSight
+		{
+			get;
+			private set;
+		}
+
+		/// <summary>
+		/// A "fudge factor" ratio that pretends planets and moons are slightly smaller than reality to make
+		/// building communication constellations easier.
+		/// </summary>
+		public static double RadiusRatio
+		{
+			get;
+			private set;
+		}
+
+		/// <summary>
+		/// Indicates whether unmanned vessels require a connection for control.
+		/// </summary>
+		public static bool RequireConnectionForControl
+		{
+			get;
+			private set;
+		}
+
+		/// <summary>
+		/// If true, relays will fix their power cost when above nominal range, decreasing data rate instead.
+		/// </summary>
+		public static bool FixedPowerCost
+		{
+			get;
+			private set;
+		}
+
+		/// <summary>
+		/// Indicates whether this AntennaRange will draw pretty lines in map view.
+		/// </summary>
+		public static bool PrettyLines
+		{
+			get;
+			set;
+		}
+
+		/// <summary>
+		/// Gets the update delay.
+		/// </summary>
+		public static long UpdateDelay
+		{
+			get;
+			private set;
+		}
+
+		public static bool UseAdditiveRanges
+		{
+			get;
+			private set;
+		}
+
+		/// <summary>
+		/// Gets Kerbin's relay range based on the current tracking station level.
+		/// </summary>
+		public static double KerbinRelayRange
+		{
+			get;
+			private set;
+		}
+
+		/// <summary>
+		/// Gets Kerbin's nominal relay range based on the current tracking station level.
+		/// </summary>
+		public static double KerbinNominalRange
+		{
+			get
+			{
+				return KerbinRelayRange / 2.8284271247461901d;
+			}
+		}
+
+#pragma warning disable 1591
+
+		private bool showConfigWindow;
+		private Rect configWindowPos;
+
+		private string updateDelayStr;
+		private long updateDelay;
+
+		private IButton toolbarButton;
+		private ApplicationLauncherButton appLauncherButton;
+
+		private double[] trackingStationRanges;
+
+		private System.Version runningVersion;
+
+		private bool runOnce;
+
+		private KSP.IO.PluginConfiguration _config;
+		private KSP.IO.PluginConfiguration config
+		{
+			get
+			{
+				if (this._config == null)
+				{
+					this._config = KSP.IO.PluginConfiguration.CreateForType<AntennaRelay>();
+				}
+
+				return this._config;
+			}
+		}
+
+		public void Awake()
+		{
+			Tools.PostDebugMessage(this, "Waking up.");
+
+			this.runningVersion = this.GetType().Assembly.GetName().Version;
+
+			this.showConfigWindow = false;
+			this.configWindowPos = new Rect(Screen.width / 4, Screen.height / 2, 180, 15);
+
+
+			this.configWindowPos = this.LoadConfigValue(WINDOW_POS_KEY, this.configWindowPos);
+
+			ARConfiguration.RequireLineOfSight = this.LoadConfigValue(REQUIRE_LOS_KEY, false);
+
+			ARConfiguration.RadiusRatio = (1 - this.LoadConfigValue(GRACE_RATIO_KEY, .05d));
+			ARConfiguration.RadiusRatio *= ARConfiguration.RadiusRatio;
+
+			ARConfiguration.RequireConnectionForControl =
+				this.LoadConfigValue(REQUIRE_PROBE_CONNECTION_KEY, false);
+
+			ARConfiguration.FixedPowerCost = this.LoadConfigValue(FIXED_POWER_KEY, false);
+
+			ARConfiguration.PrettyLines = this.LoadConfigValue(PRETTY_LINES_KEY, true);
+
+			ARConfiguration.UpdateDelay = this.LoadConfigValue(UPDATE_DELAY_KEY, 16L);
+
+			ARConfiguration.UseAdditiveRanges = this.LoadConfigValue(USE_ADDITIVE_KEY, true);
+
+			this.updateDelayStr = ARConfiguration.UpdateDelay.ToString();
+
+			GameEvents.onGameSceneLoadRequested.Add(this.onSceneChangeRequested);
+			GameEvents.OnKSCFacilityUpgraded.Add(this.onFacilityUpgraded);
+
+			Debug.Log(string.Format("{0} v{1} - ARConfiguration loaded!", this.GetType().Name, this.runningVersion));
+
+			ConfigNode[] tsRangeNodes = GameDatabase.Instance.GetConfigNodes(TRACKING_STATION_RANGES_KEY);
+
+			if (tsRangeNodes.Length > 0)
+			{
+				string[] rangeValues = tsRangeNodes[0].GetValues(RANGE_KEY);
+
+				this.trackingStationRanges = new double[rangeValues.Length];
+
+				for (int idx = 0; idx < rangeValues.Length; idx++)
+				{
+					if (!double.TryParse(rangeValues[idx], out this.trackingStationRanges[idx]))
+					{
+						this.LogError("Could not parse value '{0}' to double; Tracking Station ranges may not work!");
+						this.trackingStationRanges[idx] = 0d;
+					}
+				}
+
+				this.Log("Loaded Tracking Station ranges from config: [{0}]", this.trackingStationRanges.SPrint());
+			}
+			else
+			{
+				this.trackingStationRanges = new double[]
+				{
+					51696576d,
+					37152180000d,
+					224770770000d
+				};
+
+				this.LogWarning("Failed to load Tracking Station ranges from config, using hard-coded values: [{0}]",
+					this.trackingStationRanges.SPrint());
+			}
+
+			this.runOnce = true;
+
+			Tools.PostDebugMessage(this, "Awake.");
+		}
+
+		public void Update()
+		{
+			if (
+				this.runOnce &&
+				(ScenarioUpgradeableFacilities.Instance != null || HighLogic.CurrentGame.Mode != Game.Modes.CAREER)
+			)
+			{
+				this.runOnce = false;
+
+				this.SetKerbinRelayRange();
+			}
+		}
+
+		public void OnGUI()
+		{
+			// Only runs once, if the Toolbar is available.
+			if (ToolbarManager.ToolbarAvailable)
+			{
+				if (this.toolbarButton == null)
+				{
+					Tools.PostDebugMessage(this, "Toolbar available; initializing toolbar button.");
+
+					this.toolbarButton = ToolbarManager.Instance.add("AntennaRange", "ARConfiguration");
+					this.toolbarButton.Visibility = new GameScenesVisibility(GameScenes.SPACECENTER);
+					this.toolbarButton.Text = "AR";
+					this.toolbarButton.TexturePath = "AntennaRange/Textures/toolbarIcon";
+					this.toolbarButton.TextColor = (Color)XKCDColors.Amethyst;
+					this.toolbarButton.OnClick += delegate(ClickEvent e)
+					{
+						this.toggleConfigWindow();
+					};
+				}
+			}
+			else if (this.appLauncherButton == null && ApplicationLauncher.Ready)
+			{
+				Tools.PostDebugMessage(this, "Toolbar available; initializing AppLauncher button.");
+
+				this.appLauncherButton = ApplicationLauncher.Instance.AddModApplication(
+					this.toggleConfigWindow,
+					this.toggleConfigWindow,
+					ApplicationLauncher.AppScenes.SPACECENTER,
+					GameDatabase.Instance.GetTexture(
+						"AntennaRange/Textures/appLauncherIcon",
+						false
+					)
+				);
+			}
+
+			if (this.showConfigWindow)
+			{
+				Rect configPos = GUILayout.Window(354163056,
+					this.configWindowPos,
+					this.ConfigWindow,
+					string.Format("AntennaRange {0}.{1}", this.runningVersion.Major, this.runningVersion.Minor),
+					GUILayout.ExpandHeight(true),
+					GUILayout.ExpandWidth(true)
+				);
+
+				configPos = Tools.ClampRectToScreen(configPos, 20);
+
+				if (configPos != this.configWindowPos)
+				{
+					this.configWindowPos = configPos;
+					this.SaveConfigValue(WINDOW_POS_KEY, this.configWindowPos);
+				}
+			}
+		}
+
+		public void ConfigWindow(int _)
+		{
+			GUILayout.BeginVertical(GUILayout.ExpandHeight(true));
+
+			GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
+
+			bool requireLineOfSight = GUITools.Toggle(ARConfiguration.RequireLineOfSight, "Require Line of Sight");
+			if (requireLineOfSight != ARConfiguration.RequireLineOfSight)
+			{
+				ARConfiguration.RequireLineOfSight = requireLineOfSight;
+				this.SaveConfigValue(REQUIRE_LOS_KEY, requireLineOfSight);
+			}
+
+			GUILayout.EndHorizontal();
+
+			GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
+
+			bool requireConnectionForControl =
+				GUITools.Toggle(
+					ARConfiguration.RequireConnectionForControl,
+					"Require Connection for Probe Control"
+				);
+			if (requireConnectionForControl != ARConfiguration.RequireConnectionForControl)
+			{
+				ARConfiguration.RequireConnectionForControl = requireConnectionForControl;
+				this.SaveConfigValue(REQUIRE_PROBE_CONNECTION_KEY, requireConnectionForControl);
+			}
+
+			GUILayout.EndHorizontal();
+
+			GUILayout.BeginHorizontal();
+
+			bool fixedPowerCost = GUITools.Toggle(ARConfiguration.FixedPowerCost, "Use Fixed Power Cost");
+			if (fixedPowerCost != ARConfiguration.FixedPowerCost)
+			{
+				ARConfiguration.FixedPowerCost = fixedPowerCost;
+				this.SaveConfigValue(FIXED_POWER_KEY, fixedPowerCost);
+			}
+
+			GUILayout.EndHorizontal();
+
+			GUILayout.BeginHorizontal();
+
+			bool useAdditive = GUITools.Toggle(ARConfiguration.UseAdditiveRanges, "Use Additive Ranges");
+			if (useAdditive != ARConfiguration.UseAdditiveRanges)
+			{
+				ARConfiguration.UseAdditiveRanges = useAdditive;
+				this.SaveConfigValue(USE_ADDITIVE_KEY, useAdditive);
+			}
+
+			GUILayout.EndHorizontal();
+
+			GUILayout.BeginHorizontal();
+
+			bool prettyLines = GUITools.Toggle(ARConfiguration.PrettyLines, "Draw Pretty Lines");
+			if (prettyLines != ARConfiguration.PrettyLines)
+			{
+				ARConfiguration.PrettyLines = prettyLines;
+				this.SaveConfigValue(PRETTY_LINES_KEY, prettyLines);
+			}
+
+			GUILayout.EndHorizontal();
+
+			GUILayout.BeginHorizontal();
+
+			GUILayout.Label("Update Delay", GUILayout.ExpandWidth(false));
+
+			this.updateDelayStr = GUILayout.TextField(this.updateDelayStr, 4, GUILayout.Width(40f));
+
+			GUILayout.Label("ms", GUILayout.ExpandWidth(false));
+
+			GUILayout.EndHorizontal();
+
+			if (this.updateDelayStr.Length > 1 && long.TryParse(this.updateDelayStr, out this.updateDelay))
+			{
+				ARConfiguration.UpdateDelay = Math.Min(Math.Max(this.updateDelay, 16), 2500);
+				this.updateDelayStr = ARConfiguration.UpdateDelay.ToString();
+			}
+
+			if (requireLineOfSight)
+			{
+				GUILayout.BeginHorizontal();
+
+				double graceRatio = 1d - Math.Sqrt(ARConfiguration.RadiusRatio);
+				double newRatio;
+
+				GUILayout.Label(string.Format("Line of Sight 'Fudge Factor': {0:P0}", graceRatio));
+
+				GUILayout.EndHorizontal();
+
+				GUILayout.BeginHorizontal();
+
+				newRatio = GUILayout.HorizontalSlider((float)graceRatio, 0f, 1f, GUILayout.ExpandWidth(true));
+				newRatio = Math.Round(newRatio, 2);
+
+				if (newRatio != graceRatio)
+				{
+					ARConfiguration.RadiusRatio = (1d - newRatio) * (1d - newRatio);
+					this.SaveConfigValue(GRACE_RATIO_KEY, newRatio);
+				}
+
+				GUILayout.EndHorizontal();
+			}
+
+			GUILayout.EndVertical();
+
+			GUI.DragWindow();
+		}
+
+		public void OnDestroy()
+		{
+			GameEvents.onGameSceneLoadRequested.Remove(this.onSceneChangeRequested);
+			GameEvents.OnKSCFacilityUpgraded.Remove(this.onFacilityUpgraded);
+
+			if (this.toolbarButton != null)
+			{
+				this.toolbarButton.Destroy();
+				this.toolbarButton = null;
+			}
+
+			if (this.appLauncherButton != null)
+			{
+				ApplicationLauncher.Instance.RemoveModApplication(this.appLauncherButton);
+				this.appLauncherButton = null;
+			}
+		}
+
+		private void onSceneChangeRequested(GameScenes scene)
+		{
+			if (scene != GameScenes.SPACECENTER)
+			{
+				print("ARConfiguration: Requesting Destruction.");
+				MonoBehaviour.Destroy(this);
+			}
+		}
+
+		private void onFacilityUpgraded(Upgradeables.UpgradeableFacility fac, int lvl)
+		{
+			if (fac.id == "SpaceCenter/TrackingStation")
+			{
+				this.Log("Caught onFacilityUpgraded for {0} at level {1}", fac.id, lvl);
+				this.SetKerbinRelayRange();
+			}
+		}
+
+		private void SetKerbinRelayRange()
+		{
+			int tsLevel;
+
+			if (HighLogic.CurrentGame.Mode == Game.Modes.CAREER)
+			{
+				tsLevel = ScenarioUpgradeableFacilities.protoUpgradeables["SpaceCenter/TrackingStation"]
+					.facilityRefs[0].FacilityLevel;
+			
+
+			}
+			else
+			{
+				tsLevel = this.trackingStationRanges.Length - 1;
+			}
+
+			if (tsLevel < this.trackingStationRanges.Length && tsLevel >= 0)
+			{
+				KerbinRelayRange = this.trackingStationRanges[tsLevel];
+				this.Log("Setting Kerbin's range to {0}", KerbinRelayRange);
+			}
+			else
+			{
+				this.LogError("Could not set Kerbin's range with invalid Tracking Station level {0}", tsLevel);
+			}
+		}
+
+		private void toggleConfigWindow()
+		{
+			this.showConfigWindow = !this.showConfigWindow;
+			this.updateDelayStr = ARConfiguration.UpdateDelay.ToString();
+		}
+
+		private T LoadConfigValue<T>(string key, T defaultValue)
+		{
+			this.config.load();
+
+			return config.GetValue(key, defaultValue);
+		}
+
+		private void SaveConfigValue<T>(string key, T value)
+		{
+			this.config.load();
+
+			this.config.SetValue(key, value);
+
+			this.config.save();
+		}
+	}
+}
+

--- /dev/null
+++ b/ARFlightController.cs
@@ -1,1 +1,360 @@
-
+// AntennaRange
+//
+// ARFlightController.cs
+//
+// Copyright © 2014-2015, 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.
+
+#pragma warning disable 1591
+
+using KSP;
+using System;
+using System.Collections.Generic;
+using ToadicusTools;
+using UnityEngine;
+
+namespace AntennaRange
+{
+	[KSPAddon(KSPAddon.Startup.Flight, false)]
+	public class ARFlightController : MonoBehaviour
+	{
+		#region Fields
+		private Dictionary<ConnectionStatus, string> toolbarTextures;
+		private Dictionary<ConnectionStatus, Texture> appLauncherTextures;
+
+		private ARMapRenderer mapRenderer;
+
+		private IButton toolbarButton;
+
+		private ApplicationLauncherButton appLauncherButton;
+		private Tools.DebugLogger log;
+
+		private System.Diagnostics.Stopwatch updateTimer;
+		#endregion
+
+		#region Properties
+		public ConnectionStatus currentConnectionStatus
+		{
+			get;
+			private set;
+		}
+
+		private string currentConnectionTexture
+		{
+			get
+			{
+				return this.toolbarTextures[this.currentConnectionStatus];
+			}
+		}
+
+		private Texture currentAppLauncherTexture
+		{
+			get
+			{
+				return this.appLauncherTextures[this.currentConnectionStatus];
+			}
+		}
+
+		public ControlTypes currentControlLock
+		{
+			get
+			{
+				if (this.lockID == string.Empty)
+				{
+					return ControlTypes.None;
+				}
+
+				return InputLockManager.GetControlLock(this.lockID);
+			}
+		}
+
+		public string lockID
+		{
+			get;
+			private set;
+		}
+
+		public ControlTypes lockSet
+		{
+			get
+			{
+				return ControlTypes.ALL_SHIP_CONTROLS;
+			}
+		}
+
+		public Vessel vessel
+		{
+			get
+			{
+				if (FlightGlobals.ready && FlightGlobals.ActiveVessel != null)
+				{
+					return FlightGlobals.ActiveVessel;
+				}
+
+				return null;
+			}
+		}
+		#endregion
+
+		#region MonoBehaviour LifeCycle
+		private void Awake()
+		{
+			this.lockID = "ARConnectionRequired";
+
+			this.log = Tools.DebugLogger.New(this);
+
+			this.updateTimer = new System.Diagnostics.Stopwatch();
+
+			this.toolbarTextures = new Dictionary<ConnectionStatus, string>();
+
+			this.toolbarTextures[ConnectionStatus.None] = "AntennaRange/Textures/toolbarIconNoConnection";
+			this.toolbarTextures[ConnectionStatus.Suboptimal] = "AntennaRange/Textures/toolbarIconSubOptimal";
+			this.toolbarTextures[ConnectionStatus.Optimal] = "AntennaRange/Textures/toolbarIcon";
+
+			this.appLauncherTextures = new Dictionary<ConnectionStatus, Texture>();
+
+			this.appLauncherTextures[ConnectionStatus.None] =
+				GameDatabase.Instance.GetTexture("AntennaRange/Textures/appLauncherIconNoConnection", false);
+			this.appLauncherTextures[ConnectionStatus.Suboptimal] =
+				GameDatabase.Instance.GetTexture("AntennaRange/Textures/appLauncherIconSubOptimal", false);
+			this.appLauncherTextures[ConnectionStatus.Optimal] =
+				GameDatabase.Instance.GetTexture("AntennaRange/Textures/appLauncherIcon", false);
+
+			if (ToolbarManager.ToolbarAvailable)
+			{
+				this.toolbarButton = ToolbarManager.Instance.add("AntennaRange", "ARConnectionStatus");
+
+				this.toolbarButton.TexturePath = this.toolbarTextures[ConnectionStatus.None];
+				this.toolbarButton.Text = "AntennaRange";
+				this.toolbarButton.Visibility = new GameScenesVisibility(GameScenes.FLIGHT);
+				this.toolbarButton.OnClick += (e) => (this.buttonToggle());
+			}
+
+			GameEvents.onGameSceneLoadRequested.Add(this.onSceneChangeRequested);
+			GameEvents.onVesselChange.Add(this.onVesselChange);
+		}
+
+		private void Start()
+		{
+			this.mapRenderer = MapView.MapCamera.gameObject.AddComponent<ARMapRenderer>();
+		}
+
+		private void FixedUpdate()
+		{
+			this.log.Clear();
+
+			VesselCommand availableCommand;
+
+			if (ARConfiguration.RequireConnectionForControl)
+			{
+				availableCommand = this.vessel.CurrentCommand();
+			}
+			else
+			{
+				availableCommand = VesselCommand.Crew;
+			}
+
+			log.AppendFormat("availableCommand: {0}\n\t" +
+				"(availableCommand & VesselCommand.Crew) == VesselCommand.Crew: {1}\n\t" +
+				"(availableCommand & VesselCommand.Probe) == VesselCommand.Probe: {2}\n\t" +
+				"vessel.HasConnectedRelay(): {3}",
+				(int)availableCommand,
+				(availableCommand & VesselCommand.Crew) == VesselCommand.Crew,
+				(availableCommand & VesselCommand.Probe) == VesselCommand.Probe,
+				vessel.HasConnectedRelay()
+			);
+
+			// If we are requiring a connection for control, the vessel does not have any adequately staffed pods,
+			// and the vessel does not have any connected relays...
+			if (
+				HighLogic.LoadedSceneIsFlight &&
+				ARConfiguration.RequireConnectionForControl &&
+				this.vessel != null &&
+				this.vessel.vesselType != VesselType.EVA &&
+				!(
+				    (availableCommand & VesselCommand.Crew) == VesselCommand.Crew ||
+				    (availableCommand & VesselCommand.Probe) == VesselCommand.Probe && vessel.HasConnectedRelay()
+				))
+			{
+				// ...and if the controls are not currently locked...
+				if (currentControlLock == ControlTypes.None)
+				{
+					// ...lock the controls.
+					InputLockManager.SetControlLock(this.lockSet, this.lockID);
+				}
+			}
+			// ...otherwise, if the controls are locked...
+			else if (currentControlLock != ControlTypes.None)
+			{
+				// ...unlock the controls.
+				InputLockManager.RemoveControlLock(this.lockID);
+			}
+
+			log.Print();
+		}
+
+		private void Update()
+		{
+			if (this.toolbarButton != null)
+			{
+				this.toolbarButton.Enabled = MapView.MapIsEnabled;
+			}
+
+			if (this.appLauncherButton == null && !ToolbarManager.ToolbarAvailable && ApplicationLauncher.Ready)
+			{
+				this.appLauncherButton = ApplicationLauncher.Instance.AddModApplication(
+					this.buttonToggle, this.buttonToggle,
+					ApplicationLauncher.AppScenes.FLIGHT | ApplicationLauncher.AppScenes.MAPVIEW,
+					this.appLauncherTextures[ConnectionStatus.None]
+				);
+			}
+
+			if (!this.updateTimer.IsRunning || this.updateTimer.ElapsedMilliseconds > ARConfiguration.UpdateDelay)
+			{
+				this.updateTimer.Restart();
+			}
+			else
+			{
+				return;
+			}
+
+			this.log.Clear();
+
+			if (HighLogic.LoadedSceneIsFlight && FlightGlobals.ActiveVessel != null)
+			{
+				Vessel vessel;
+				IAntennaRelay relay;
+				IList<IAntennaRelay> activeVesselRelays;
+
+				for (int vIdx = 0; vIdx < FlightGlobals.Vessels.Count; vIdx++)
+				{
+					vessel = FlightGlobals.Vessels[vIdx];
+
+					if (vessel == null || vessel == FlightGlobals.ActiveVessel)
+					{
+						continue;
+					}
+
+					log.AppendFormat("Fetching best relay for vessel {0}", vessel);
+
+					relay = vessel.GetBestRelay();
+
+					if (relay != null)
+					{
+						log.AppendFormat("Finding nearest relay for best relay {0}", relay);
+
+						relay.FindNearestRelay();
+					}
+				}
+
+				activeVesselRelays = RelayDatabase.Instance[FlightGlobals.ActiveVessel];
+				for (int rIdx = 0; rIdx < activeVesselRelays.Count; rIdx++)
+				{
+					relay = activeVesselRelays[rIdx];
+
+					relay.FindNearestRelay();
+				}
+
+				if (this.toolbarButton != null || this.appLauncherButton != null)
+				{
+					log.Append("Checking vessel relay status.\n");
+
+					this.currentConnectionStatus = FlightGlobals.ActiveVessel.GetConnectionStatus();
+
+					log.AppendFormat("currentConnectionStatus: {0}, setting texture to {1}",
+						this.currentConnectionStatus, this.currentConnectionTexture);
+
+					if (this.toolbarButton != null)
+					{
+						this.toolbarButton.TexturePath = this.currentConnectionTexture;
+
+						if (this.currentConnectionStatus == ConnectionStatus.None)
+						{
+							if (!this.toolbarButton.Important) this.toolbarButton.Important = true;
+						}
+						else
+						{
+							if (this.toolbarButton.Important) this.toolbarButton.Important = false;
+						}
+					}
+					if (this.appLauncherButton != null)
+					{
+						this.appLauncherButton.SetTexture(this.currentAppLauncherTexture);
+					}
+				}
+			}
+
+			log.Print();
+		}
+
+		private void OnDestroy()
+		{
+			InputLockManager.RemoveControlLock(this.lockID);
+
+			if (this.mapRenderer != null)
+			{
+				GameObject.Destroy(this.mapRenderer);
+			}
+
+			if (this.toolbarButton != null)
+			{
+				this.toolbarButton.Destroy();
+			}
+
+			if (this.appLauncherButton != null)
+			{
+				ApplicationLauncher.Instance.RemoveModApplication(this.appLauncherButton);
+				this.appLauncherButton = null;
+			}
+
+			GameEvents.onGameSceneLoadRequested.Remove(this.onSceneChangeRequested);
+			GameEvents.onVesselChange.Remove(this.onVesselChange);
+
+			print("ARFlightController: Destroyed.");
+		}
+		#endregion
+
+		private void buttonToggle()
+		{
+			if (MapView.MapIsEnabled)
+			{
+				ARConfiguration.PrettyLines = !ARConfiguration.PrettyLines;
+			}
+		}
+
+		#region Event Handlers
+		private void onSceneChangeRequested(GameScenes scene)
+		{
+			print("ARFlightController: Requesting Destruction.");
+			MonoBehaviour.Destroy(this);
+		}
+
+		private void onVesselChange(Vessel vessel)
+		{
+			InputLockManager.RemoveControlLock(this.lockID);
+		}
+		#endregion
+	}
+}
+

file:b/ARMapRenderer.cs (new)
--- /dev/null
+++ b/ARMapRenderer.cs
@@ -1,1 +1,329 @@
-
+// AntennaRange
+//
+// ARMapRenderer.cs
+//
+// Copyright © 2014-2015, 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.
+
+#pragma warning disable 1591
+
+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;
+
+		// Debug Stuff
+		#pragma warning disable 649
+		private System.Diagnostics.Stopwatch timer;
+		private Tools.DebugLogger log;
+		private long relayStart;
+		private long start;
+		#pragma warning restore 649
+
+		#pragma warning disable 414
+		private Color thisColor;
+		#pragma warning restore 414
+		#endregion
+
+		#region Properties
+		public LineRenderer this[Guid idx]
+		{
+			get
+			{
+				if (this.vesselLineRenderers == null)
+				{
+					this.vesselLineRenderers = new Dictionary<Guid, LineRenderer>();
+				}
+
+				LineRenderer lr;
+
+				if (this.vesselLineRenderers.TryGetValue(idx, out lr))
+				{
+					return lr;
+				}
+				else
+				{
+					GameObject obj = new GameObject();
+					obj.layer = 31;
+
+					lr = obj.AddComponent<LineRenderer>();
+
+					// lr.SetColors(Color.green, Color.green);
+					lr.material = MapView.OrbitLinesMaterial;
+					// lr.SetVertexCount(2);
+
+					this.vesselLineRenderers[idx] = lr;
+
+					return lr;
+				}
+			}
+		}
+		#endregion
+
+		#region MonoBehaviour Lifecycle
+		private void Awake()
+		{
+			if (ARConfiguration.PrettyLines)
+			{
+				this.vesselLineRenderers = new Dictionary<Guid, LineRenderer>();
+			}
+
+			#if DEBUG
+			this.timer = new System.Diagnostics.Stopwatch();
+			this.log = Tools.DebugLogger.New(this);
+			#endif
+		}
+
+		private void OnPreCull()
+		{
+			if (!HighLogic.LoadedSceneIsFlight || !MapView.MapIsEnabled || !ARConfiguration.PrettyLines)
+			{
+				this.Cleanup();
+
+				return;
+			}
+
+			#if DEBUG
+			timer.Restart();
+			#endif
+
+			try
+			{
+				log.Clear();
+
+				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
+				);
+
+				if (FlightGlobals.ready && FlightGlobals.Vessels != null)
+				{
+					log.AppendLine("FlightGlobals ready and Vessels list not null.");
+
+					for (int i = 0; i < FlightGlobals.Vessels.Count; i++)
+					{
+						Vessel vessel = FlightGlobals.Vessels[i];
+
+						log.AppendFormat("\nStarting check for vessel {0} at {1}ms", vessel, timer.ElapsedMilliseconds);
+
+						if (vessel == null)
+						{
+							log.AppendFormat("\n\tSkipping vessel {0} altogether because it is null.", vessel);
+							continue;
+						}
+
+						switch (vessel.vesselType)
+						{
+							case VesselType.Debris:
+							case VesselType.EVA:
+							case VesselType.Unknown:
+							case VesselType.SpaceObject:
+								log.AppendFormat("\n\tDiscarded because vessel is of invalid type {0}",
+									vessel.vesselType);
+								continue;
+						}
+
+						log.AppendFormat("\n\tChecking vessel {0}.", vessel.vesselName);
+
+						#if DEBUG
+						start = timer.ElapsedMilliseconds;
+						#endif
+
+						IAntennaRelay vesselRelay = vessel.GetBestRelay();
+
+						if (vesselRelay == null)
+						{
+							log.AppendFormat("\n\tGot null relay for vessel {0}", vessel.vesselName);
+							continue;
+						}
+
+						log.AppendFormat("\n\tGot best relay {0} ({3}) for vessel {1} in {2} ms",
+							vesselRelay, vessel, timer.ElapsedMilliseconds - start, vesselRelay.GetType().Name);
+
+						if (vesselRelay != null)
+						{
+							#if DEBUG
+							start = timer.ElapsedMilliseconds;
+							#endif
+
+							this.SetRelayVertices(vesselRelay);
+
+							log.AppendFormat("\n\tSet relay vertices for {0} in {1}ms",
+								vessel, timer.ElapsedMilliseconds - start);
+						}
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				this.LogError("Caught {0}: {1}\n{2}\n", ex.GetType().Name, ex.ToString(), ex.StackTrace.ToString());
+				this.Cleanup();
+			}
+			#if DEBUG
+			finally
+			{
+				log.AppendFormat("\n\tOnPreCull finished in {0}ms\n", timer.ElapsedMilliseconds);
+
+				log.Print();
+			}
+			#endif
+		}
+
+		private void OnDestroy()
+		{
+			this.Cleanup();
+
+			this.Log("Destroyed");
+		}
+		#endregion
+
+		#region Utility
+		private void SetRelayVertices(IAntennaRelay relay)
+		{
+			log.AppendFormat("\n\t\tDrawing line for relay chain starting at {0}.", relay);
+
+			if (relay.vessel == null)
+			{
+				log.Append("\n\t\tvessel is null, bailing out");
+				return;
+			}
+
+			LineRenderer renderer = this[relay.vessel.id];
+			Vector3d start = ScaledSpace.LocalToScaledSpace(relay.vessel.GetWorldPos3D());
+
+			float lineWidth;
+			float d = Screen.height / 2f + 0.01f;
+
+			if (MapView.Draw3DLines)
+			{
+				lineWidth = 0.005859375f * MapView.MapCamera.Distance;
+			}
+			else
+			{
+				lineWidth = 2f;
+
+				start = MapView.MapCamera.camera.WorldToScreenPoint(start);
+
+				start.z = start.z >= 0f ? d : -d;
+			}
+
+			renderer.SetWidth(lineWidth, lineWidth);
+
+			renderer.SetPosition(0, start);
+
+			int idx = 0;
+
+			#if DEBUG
+			relayStart = timer.ElapsedMilliseconds;
+			#endif
+
+			Vector3d nextPoint;
+
+			renderer.enabled = true;
+
+			if (!relay.CanTransmit())
+			{
+				thisColor = Color.red;
+			}
+			else
+			{
+				if (relay.LinkStatus == ConnectionStatus.Optimal)
+				{
+					thisColor = Color.green;
+				}
+				else
+				{
+					thisColor = Color.yellow;
+				}
+			}
+
+			if (relay.KerbinDirect)
+			{
+				nextPoint = ScaledSpace.LocalToScaledSpace(AntennaRelay.Kerbin.position);
+			}
+			else
+			{
+				if (relay.targetRelay == null || relay.targetRelay.vessel == null)
+				{
+					this.LogError(
+						"SetRelayVertices: relay {0} has null target relay or vessel when not KerbinDirect, bailing out!",
+						relay
+					);
+
+					renderer.enabled = false;
+					return;
+				}
+
+				nextPoint = ScaledSpace.LocalToScaledSpace(relay.targetRelay.vessel.GetWorldPos3D());
+			}
+
+			renderer.SetColors(thisColor, thisColor);
+
+			if (!MapView.Draw3DLines)
+			{
+				nextPoint = MapView.MapCamera.camera.WorldToScreenPoint(nextPoint);
+				nextPoint.z = nextPoint.z >= 0f ? d : -d;
+			}
+
+			idx++;
+
+			renderer.SetVertexCount(idx + 1);
+			renderer.SetPosition(idx, nextPoint);
+
+			log.AppendFormat("\n\t\t\t...finished segment in {0} ms", timer.ElapsedMilliseconds - relayStart);
+		}
+
+		private void Cleanup()
+		{
+			if (this.vesselLineRenderers != null && this.vesselLineRenderers.Count > 0)
+			{
+				IEnumerator<LineRenderer> enumerator = this.vesselLineRenderers.Values.GetEnumerator();
+				LineRenderer lineRenderer;
+
+				while (enumerator.MoveNext())
+				{
+					lineRenderer = enumerator.Current;
+					lineRenderer.enabled = false;
+					GameObject.Destroy(lineRenderer.gameObject);
+				}
+				this.vesselLineRenderers.Clear();
+			}
+		}
+		#endregion
+	}
+}
+

file:a/ARTools.cs (deleted)
--- a/ARTools.cs
+++ /dev/null
@@ -1,113 +1,1 @@
-using System;
 
-namespace AntennaRange
-{
-	public static class Tools
-	{
-		private static ScreenMessage debugmsg = new ScreenMessage("", 2f, ScreenMessageStyle.UPPER_RIGHT);
-
-		[System.Diagnostics.Conditional("DEBUG")]
-		public static void PostDebugMessage(string Msg)
-		{
-			if (HighLogic.LoadedScene > GameScenes.SPACECENTER)
-			{
-				debugmsg.message = Msg;
-				ScreenMessages.PostScreenMessage(debugmsg, true);
-			}
-
-			KSPLog.print(Msg);
-		}
-
-		/*
-		 * MuMech_ToSI is a part of the MuMechLib library, © 2013 r4m0n, used under the GNU GPL version 3.
-		 * */
-		public static string MuMech_ToSI(double d, int digits = 3, int MinMagnitude = 0, int MaxMagnitude = int.MaxValue)
-		{
-			float exponent = (float)Math.Log10(Math.Abs(d));
-			exponent = UnityEngine.Mathf.Clamp(exponent, (float)MinMagnitude, (float)MaxMagnitude);
-
-			if (exponent >= 0)
-			{
-				switch ((int)Math.Floor(exponent))
-				{
-					case 0:
-						case 1:
-						case 2:
-						return d.ToString("F" + digits);
-						case 3:
-						case 4:
-						case 5:
-						return (d / 1e3).ToString("F" + digits) + "k";
-						case 6:
-						case 7:
-						case 8:
-						return (d / 1e6).ToString("F" + digits) + "M";
-						case 9:
-						case 10:
-						case 11:
-						return (d / 1e9).ToString("F" + digits) + "G";
-						case 12:
-						case 13:
-						case 14:
-						return (d / 1e12).ToString("F" + digits) + "T";
-						case 15:
-						case 16:
-						case 17:
-						return (d / 1e15).ToString("F" + digits) + "P";
-						case 18:
-						case 19:
-						case 20:
-						return (d / 1e18).ToString("F" + digits) + "E";
-						case 21:
-						case 22:
-						case 23:
-						return (d / 1e21).ToString("F" + digits) + "Z";
-						default:
-						return (d / 1e24).ToString("F" + digits) + "Y";
-				}
-			}
-			else if (exponent < 0)
-			{
-				switch ((int)Math.Floor(exponent))
-				{
-					case -1:
-						case -2:
-						case -3:
-						return (d * 1e3).ToString("F" + digits) + "m";
-						case -4:
-						case -5:
-						case -6:
-						return (d * 1e6).ToString("F" + digits) + "μ";
-						case -7:
-						case -8:
-						case -9:
-						return (d * 1e9).ToString("F" + digits) + "n";
-						case -10:
-						case -11:
-						case -12:
-						return (d * 1e12).ToString("F" + digits) + "p";
-						case -13:
-						case -14:
-						case -15:
-						return (d * 1e15).ToString("F" + digits) + "f";
-						case -16:
-						case -17:
-						case -18:
-						return (d * 1e18).ToString("F" + digits) + "a";
-						case -19:
-						case -20:
-						case -21:
-						return (d * 1e21).ToString("F" + digits) + "z";
-						default:
-						return (d * 1e24).ToString("F" + digits) + "y";
-				}
-			}
-			else
-			{
-				return "0";
-			}
-		}
-	}
-}
-
-

file:a/AntennaRange.cfg (deleted)
--- a/AntennaRange.cfg
+++ /dev/null
@@ -1,50 +1,1 @@
-//

-// AntennaRange © 2013 toadicus

-// 

-// This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a

-// copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/

-//

-// This software uses the ModuleManager library © 2013 ialdabaoth, used under a Creative Commons Attribution-ShareAlike

-// 3.0 Uported License.

-//

-// Specifications:

-// nominalRange:	The distance from Kerbin at which the antenna will perform exactly as prescribed by packetResourceCost

-// 					and packetSize.

-// maxPowerFactor:	The multiplier on packetResourceCost that defines the maximum power output of the antenna.  When the

-//					power cost exceeds packetResourceCost * maxPowerFactor, transmission will fail.

-// maxDataFactor:	The multipler on packetSize that defines the maximum data bandwidth of the antenna.

-// 

-

-@PART[longAntenna]

-{

-	@MODULE[ModuleDataTransmitter]

-	{

-		@name = ModuleLimitedDataTransmitter

-		nominalRange = 1500000

-		maxPowerFactor = 8

-		maxDataFactor = 4

-	}

-}

-

-@PART[mediumDishAntenna]

-{

-	@MODULE[ModuleDataTransmitter]

-	{

-		@name = ModuleLimitedDataTransmitter

-		nominalRange = 30000000

-		maxPowerFactor = 8

-		maxDataFactor = 4

-	}

-}

-

-@PART[commDish]

-{

-	@MODULE[ModuleDataTransmitter]

-	{

-		@name = ModuleLimitedDataTransmitter

-		nominalRange = 80000000000

-		maxPowerFactor = 8

-		maxDataFactor = 4

-	}

-}

 

file:a/AntennaRange.cs (deleted)
--- a/AntennaRange.cs
+++ /dev/null
@@ -1,387 +1,1 @@
-/*
- * AntennaRange © 2013 toadicus
- * 
- * AntennaRange provides incentive and requirements for the use of the various antenna parts.
- * Nominally, the breakdown is as follows:
- * 
- *     Communotron 16 - Suitable up to Kerbalsynchronous Orbit
- *     Comms DTS-M1 - Suitable throughout the Kerbin subsystem
- *     Communotron 88-88 - Suitable throughout the Kerbol system.
- * 
- * This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a
- * copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
- * 
- * This software uses the ModuleManager library © 2013 ialdabaoth, used under a Creative Commons Attribution-ShareAlike
- * 3.0 Uported License.
- * 
- * This software uses code from the MuMechLib library, © 2013 r4m0n, used under the GNU GPL version 3.
- * 
- */
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using KSP;
-using UnityEngine;
 
-namespace AntennaRange
-{
-	/*
-	 * ModuleLimitedDataTransmitter is designed as a drop-in replacement for ModuleDataTransmitter, and handles range-
-	 * finding, power scaling, and data scaling for antennas during science transmission.  Its functionality varies with
-	 * three tunables: nominalRange, maxPowerFactor, and maxDataFactor, set in .cfg files.
-	 * 
-	 * In general, the scaling functions assume the following relation:
-	 * 
-	 *     D² α P/R,
-	 * 
-	 * where D is the total transmission distance, P is the transmission power, and R is the data rate.
-	 * 
-	 * */
-
-	/*
-	 * Fields
-	 * */
-	public class ModuleLimitedDataTransmitter : ModuleDataTransmitter, IScienceDataTransmitter, IAntennaRelay
-	{
-		// Call this an antenna so that you don't have to.
-		[KSPField(isPersistant = true)]
-		protected bool IsAntenna = true;
-
-		// Stores the packetResourceCost as defined in the .cfg file.
-		protected float _basepacketResourceCost;
-
-		// Stores the packetSize as defined in the .cfg file.
-		protected float _basepacketSize;
-
-		// Every antenna is a relay.
-		protected AntennaRelay relay;
-
-		// Keep track of vessels with transmitters for relay purposes.
-		protected List<Vessel> _relayVessels;
-
-		// Sometimes we will need to communicate errors; this is how we do it.
-		protected ScreenMessage ErrorMsg;
-
-		// Let's make the error text pretty!
-		protected UnityEngine.GUIStyle ErrorStyle;
-
-		// The distance from Kerbin at which the antenna will perform exactly as prescribed by packetResourceCost
-		// and packetSize.
-		[KSPField(isPersistant = false)]
-		public float nominalRange;
-
-		// The multiplier on packetResourceCost that defines the maximum power output of the antenna.  When the power
-		// cost exceeds packetResourceCost * maxPowerFactor, transmission will fail.
-		[KSPField(isPersistant = false)]
-		public float maxPowerFactor;
-
-		// The multipler on packetSize that defines the maximum data bandwidth of the antenna.
-		[KSPField(isPersistant = false)]
-		public float maxDataFactor;
-
-		// This field exists to get saved to the persistence file so that relays can be found on unloaded Vessels.
-		[KSPField(isPersistant = true)]
-		protected float ARmaxTransmitDistance;
-
-		/*
-		 * Properties
-		 * */
-		// Returns the parent vessel housing this antenna.
-		public new Vessel vessel
-		{
-			get
-			{
-				return base.vessel;
-			}
-		}
-
-		// Returns the distance to the nearest relay or Kerbin, whichever is closer.
-		public double transmitDistance
-		{
-			get
-			{
-				return this.relay.transmitDistance;
-			}
-		}
-
-		// Returns the maximum distance this module can transmit
-		public float maxTransmitDistance
-		{
-			get
-			{
-				return this.ARmaxTransmitDistance;
-			}
-		}
-
-		/*
-		 * The next two functions overwrite the behavior of the stock functions and do not perform equivalently, except
-		 * in that they both return floats.  Here's some quick justification:
-		 * 
-		 * The stock implementation of GetTransmitterScore (which I cannot override) is:
-		 * 		Score = (1 + DataResourceCost) / DataRate
-		 * 
-		 * The stock DataRate and DataResourceCost are:
-		 * 		DataRate = packetSize / packetInterval
-		 * 		DataResourceCost = packetResourceCost / packetSize
-		 * 
-		 * So, the resulting score is essentially in terms of joules per byte per baud.  Rearranging that a bit, it
-		 * could also look like joule-seconds per byte per byte, or newton-meter-seconds per byte per byte.  Either way,
-		 * that metric is not a very reasonable one.
-		 * 
-		 * Two metrics that might make more sense are joules per byte or joules per byte per second.  The latter case
-		 * would look like:
-		 * 		DataRate = packetSize / packetInterval
-		 * 		DataResourceCost = packetResourceCost
-		 * 
-		 * The former case, which I've chosen to implement below, is:
-		 * 		DataRate = packetSize
-		 * 		DataResourceCost = packetResourceCost
-		 * 
-		 * So... hopefully that doesn't screw with anything else.
-		 * */
-		// Override ModuleDataTransmitter.DataRate to just return packetSize, because we want antennas to be scored in
-		// terms of joules/byte
-		public new float DataRate
-		{
-			get
-			{
-				this.PreTransmit_SetPacketSize();
-				return this.packetSize;
-			}
-		}
-
-		// Override ModuleDataTransmitter.DataResourceCost to just return packetResourceCost, because we want antennas
-		// to be scored in terms of joules/byte
-		public new float DataResourceCost
-		{
-			get
-			{
-				this.PreTransmit_SetPacketResourceCost();
-
-				if (this.CanTransmit())
-				{
-					return this.packetResourceCost;
-				}
-				else
-				{
-					return float.PositiveInfinity;
-				}
-			}
-		}
-
-		// Reports whether this antenna has been checked as a viable relay already in the current FindNearestRelay.
-		public bool relayChecked
-		{
-			get
-			{
-				return this.relay.relayChecked;
-			}
-		}
-
-		/*
-		 * Methods
-		 * */
-		// Build ALL the objects.
-		public ModuleLimitedDataTransmitter () : base()
-		{
-			// Make the error posting prettier.
-			this.ErrorStyle = new UnityEngine.GUIStyle();
-			this.ErrorStyle.normal.textColor = (UnityEngine.Color)XKCDColors.OrangeRed;
-			this.ErrorStyle.active.textColor = (UnityEngine.Color)XKCDColors.OrangeRed;
-			this.ErrorStyle.hover.textColor = (UnityEngine.Color)XKCDColors.OrangeRed;
-			this.ErrorStyle.fontStyle = UnityEngine.FontStyle.Bold;
-			this.ErrorStyle.padding.top = 32;
-
-			this.ErrorMsg = new ScreenMessage("", 4f, false, ScreenMessageStyle.UPPER_LEFT, this.ErrorStyle);
-		}
-
-		// At least once, when the module starts with a state on the launch pad or later, go find Kerbin.
-		public override void OnStart (StartState state)
-		{
-			base.OnStart (state);
-
-			if (state >= StartState.PreLaunch)
-			{
-				this.relay = new AntennaRelay(vessel);
-				this.relay.maxTransmitDistance = this.maxTransmitDistance;
-			}
-
-			// Pre-set the transmit cost and packet size when loading.
-			this.PreTransmit_SetPacketResourceCost();
-			this.PreTransmit_SetPacketSize();
-		}
-
-		// When the module loads, fetch the Squad KSPFields from the base.  This is necessary in part because
-		// overloading packetSize and packetResourceCostinto a property in ModuleLimitedDataTransmitter didn't
-		// work.
-		public override void OnLoad(ConfigNode node)
-		{
-			this.Fields.Load(node);
-			base.Fields.Load(node);
-
-			this.ARmaxTransmitDistance = Mathf.Sqrt (this.maxPowerFactor) * this.nominalRange;
-
-			base.OnLoad (node);
-
-			this._basepacketSize = base.packetSize;
-			this._basepacketResourceCost = base.packetResourceCost;
-
-			Tools.PostDebugMessage(string.Format(
-				"{0} loaded:\n" +
-				"packetSize: {1}\n" +
-				"packetResourceCost: {2}\n" +
-				"nominalRange: {3}\n" +
-				"maxPowerFactor: {4}\n" +
-				"maxDataFactor: {5}\n",
-				this.name,
-				base.packetSize,
-				this._basepacketResourceCost,
-				this.nominalRange,
-				this.maxPowerFactor,
-				this.maxDataFactor
-			));
-		}
-
-		// Post an error in the communication messages describing the reason transmission has failed.  Currently there
-		// is only one reason for this.
-		protected void PostCannotTransmitError()
-		{
-			string ErrorText = string.Format (
-				"Unable to transmit: out of range!  Maximum range = {0}m; Current range = {1}m.",
-				Tools.MuMech_ToSI((double)this.ARmaxTransmitDistance, 2),
-				Tools.MuMech_ToSI((double)this.transmitDistance, 2)
-				);
-
-			this.ErrorMsg.message = ErrorText;
-
-			ScreenMessages.PostScreenMessage(this.ErrorMsg, true);
-		}
-
-		// Before transmission, set packetResourceCost.  Per above, packet cost increases with the square of
-		// distance.  packetResourceCost maxes out at _basepacketResourceCost * maxPowerFactor, at which point
-		// transmission fails (see CanTransmit).
-		protected void PreTransmit_SetPacketResourceCost()
-		{
-			if (this.transmitDistance <= this.nominalRange)
-			{
-				base.packetResourceCost = this._basepacketResourceCost;
-			}
-			else
-			{
-				base.packetResourceCost = this._basepacketResourceCost
-					* (float)Math.Pow (this.transmitDistance / this.nominalRange, 2);
-			}
-		}
-
-		// Before transmission, set packetSize.  Per above, packet size increases with the inverse square of
-		// distance.  packetSize maxes out at _basepacketSize * maxDataFactor.
-		protected void PreTransmit_SetPacketSize()
-		{
-			if (this.transmitDistance >= this.nominalRange)
-			{
-				base.packetSize = this._basepacketSize;
-			}
-			else
-			{
-				base.packetSize = Math.Min(
-					this._basepacketSize * (float)Math.Pow (this.nominalRange / this.transmitDistance, 2),
-					this._basepacketSize * this.maxDataFactor);
-			}
-		}
-
-		// Override ModuleDataTransmitter.GetInfo to add nominal and maximum range to the VAB description.
-		public override string GetInfo()
-		{
-			string text = base.GetInfo();
-			text += "Nominal Range: " + Tools.MuMech_ToSI((double)this.nominalRange, 2) + "m\n";
-			text += "Maximum Range: " + Tools.MuMech_ToSI((double)this.ARmaxTransmitDistance, 2) + "m\n";
-			return text;
-		}
-
-		// Override ModuleDataTransmitter.CanTransmit to return false when transmission is not possible.
-		public new bool CanTransmit()
-		{
-			return this.relay.CanTransmit();
-		}
-
-		// Override ModuleDataTransmitter.TransmitData to check against CanTransmit and fail out when CanTransmit
-		// returns false.
-		public new void TransmitData(List<ScienceData> dataQueue)
-		{
-			if (this.CanTransmit())
-			{
-				base.TransmitData(dataQueue);
-			}
-			else
-			{
-				this.PostCannotTransmitError ();
-			}
-
-			Tools.PostDebugMessage (
-				"distance: " + this.transmitDistance
-				+ " packetSize: " + this.packetSize
-				+ " packetResourceCost: " + this.packetResourceCost
-			);
-		}
-
-		// Override ModuleDataTransmitter.StartTransmission to check against CanTransmit and fail out when CanTransmit
-		// returns false.
-		public new void StartTransmission()
-		{
-			PreTransmit_SetPacketSize ();
-			PreTransmit_SetPacketResourceCost ();
-
-			Tools.PostDebugMessage (
-				"distance: " + this.transmitDistance
-				+ " packetSize: " + this.packetSize
-				+ " packetResourceCost: " + this.packetResourceCost
-				);
-			if (this.CanTransmit())
-			{
-				base.StartTransmission();
-			}
-			else
-			{
-				this.PostCannotTransmitError ();
-			}
-		}
-
-		// 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()
-		{
-			PreTransmit_SetPacketSize ();
-			PreTransmit_SetPacketResourceCost ();
-
-			string msg = string.Format(
-				"'{0}'\n" + 
-				"_basepacketSize: {1}\n" +
-				"packetSize: {2}\n" +
-				"_basepacketResourceCost: {3}\n" +
-				"packetResourceCost: {4}\n" +
-				"maxTransmitDistance: {5}\n" +
-				"transmitDistance: {6}\n" +
-				"nominalRange: {7}\n" +
-				"CanTransmit: {8}\n" +
-				"DataRate: {9}\n" +
-				"DataResourceCost: {10}\n" +
-				"TransmitterScore: {11}",
-				this.name,
-				this._basepacketSize,
-				base.packetSize,
-				this._basepacketResourceCost,
-				base.packetResourceCost,
-				this.ARmaxTransmitDistance,
-				this.transmitDistance,
-				this.nominalRange,
-				this.CanTransmit(),
-				this.DataRate,
-				this.DataResourceCost,
-				ScienceUtil.GetTransmitterScore(this)
-				);
-			ScreenMessages.PostScreenMessage (new ScreenMessage (msg, 4f, ScreenMessageStyle.UPPER_RIGHT));
-		}
-		#endif
-	}
-}

--- /dev/null
+++ b/AntennaRange.csproj
@@ -1,1 +1,109 @@
-
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug_win</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{B36F2C11-962E-4A75-9F41-61AD56D11493}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <RootNamespace>AntennaRange</RootNamespace>
+    <AssemblyName>AntennaRange</AssemblyName>
+    <ReleaseVersion>1.3</ReleaseVersion>
+    <SynchReleaseVersion>false</SynchReleaseVersion>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <UseMSBuildEngine>False</UseMSBuildEngine>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug_win|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;TRACE;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <ConsolePause>false</ConsolePause>
+    <CustomCommands>
+      <CustomCommands>
+        <Command type="AfterBuild" command="xcopy /y ${TargetFile} ${ProjectDir}\GameData\AntennaRange\" />
+      </CustomCommands>
+    </CustomCommands>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release_win|AnyCPU' ">
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <ConsolePause>false</ConsolePause>
+    <CustomCommands>
+      <CustomCommands>
+        <Command type="AfterBuild" command="xcopy /y ${TargetFile} ${ProjectDir}\GameData\AntennaRange\" />
+      </CustomCommands>
+    </CustomCommands>
+    <DocumentationFile>bin\Release\AntennaRange.xml</DocumentationFile>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug_linux|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;TRACE;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <ConsolePause>false</ConsolePause>
+    <CustomCommands>
+      <CustomCommands>
+        <Command type="AfterBuild" command="cp -afv ${TargetFile} ${ProjectDir}/GameData/${ProjectName}/" />
+      </CustomCommands>
+    </CustomCommands>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release_linux|AnyCPU' ">
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CustomCommands>
+      <CustomCommands>
+        <Command type="AfterBuild" command="cp -afv ${TargetFile} ${ProjectDir}/GameData/${ProjectName}/" />
+      </CustomCommands>
+    </CustomCommands>
+    <ConsolePause>false</ConsolePause>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="IAntennaRelay.cs" />
+    <Compile Include="ModuleLimitedDataTransmitter.cs" />
+    <Compile Include="AntennaRelay.cs" />
+    <Compile Include="ProtoAntennaRelay.cs" />
+    <Compile Include="RelayDatabase.cs" />
+    <Compile Include="RelayExtensions.cs" />
+    <Compile Include="ARConfiguration.cs" />
+    <Compile Include="ARFlightController.cs" />
+    <Compile Include="ARMapRenderer.cs" />
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <ItemGroup>
+    <Reference Include="Assembly-CSharp">
+      <HintPath>..\_KSPAssemblies\Assembly-CSharp.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="System">
+      <HintPath>..\_KSPAssemblies\System.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="UnityEngine">
+      <HintPath>..\_KSPAssemblies\UnityEngine.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\ToadicusTools\ToadicusTools.csproj">
+      <Project>{D48A5542-6655-4149-BC27-B27DF0466F1C}</Project>
+      <Name>ToadicusTools</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="GameData\AntennaRange\AntennaRange.cfg" />
+    <None Include="GameData\AntennaRange\ATM_AntennaRange.cfg" />
+  </ItemGroup>
+</Project>

--- a/AntennaRelay.cs
+++ b/AntennaRelay.cs
@@ -1,25 +1,132 @@
+// AntennaRange
+//
+// AntennaRelay.cs
+//
+// Copyright © 2014-2015, 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 System;
 using System.Collections.Generic;
-using System.Linq;
+using ToadicusTools;
 
 namespace AntennaRange
 {
-	public class AntennaRelay : IAntennaRelay
+	/// <summary>
+	/// Relay code at the heart of AntennaRange
+	/// </summary>
+	public class AntennaRelay
 	{
 		// We don't have a Bard, so we'll hide Kerbin here.
-		protected CelestialBody Kerbin;
+		private static CelestialBody _Kerbin;
+
+		/// <summary>
+		/// Fetches, caches, and returns a <see cref="CelestialBody"/> reference to Kerbin
+		/// </summary>
+		public static CelestialBody Kerbin
+		{
+			get
+			{
+				if (_Kerbin == null && FlightGlobals.ready)
+				{
+					_Kerbin = FlightGlobals.GetHomeBody();
+				}
+
+				return _Kerbin;
+			}
+		}
+
+		private bool canTransmit;
+		private bool isChecked;
+
+		private IAntennaRelay nearestRelay;
+		private IAntennaRelay bestOccludedRelay;
+
+		/// <summary>
+		/// The <see cref="AntennaRange.ModuleLimitedDataTransmitter"/> reference underlying this AntennaRelay, as an
+		/// <see cref="AntennaRange.IAntennaRelay"/>
+		/// </summary>
+		protected IAntennaRelay moduleRef;
 
 		/// <summary>
 		/// Gets the parent Vessel.
 		/// </summary>
 		/// <value>The parent Vessel.</value>
-		public Vessel vessel
+		public virtual Vessel vessel
+		{
+			get
+			{
+				return this.moduleRef.vessel;
+			}
+		}
+
+		/// <summary>
+		/// Gets the target <see cref="AntennaRange.IAntennaRelay"/>relay.
+		/// </summary>
+		public IAntennaRelay targetRelay
 		{
 			get;
 			protected set;
 		}
 
 		/// <summary>
+		/// Gets a value indicating whether this <see cref="AntennaRange.IAntennaRelay"/> Relay is communicating
+		/// directly with Kerbin.
+		/// </summary>
+		public virtual bool KerbinDirect
+		{
+			get;
+			protected set;
+		}
+
+		/// <summary>
+		/// Gets or sets the nominal link distance, in meters.
+		/// </summary>
+		public virtual double NominalLinkDistance
+		{
+			get;
+			protected set;
+		}
+
+		/// <summary>
+		/// Gets or sets the maximum link distance, in meters.
+		/// </summary>
+		public virtual double MaximumLinkDistance
+		{
+			get;
+			protected set;
+		}
+
+		/// <summary>
+		/// Gets the first <see cref="CelestialBody"/> found to be blocking line of sight.
+		/// </summary>
+		public virtual CelestialBody firstOccludingBody
+		{
+			get;
+			protected set;
+		}
+
+		/// <summary>
 		/// Gets the transmit distance.
 		/// </summary>
 		/// <value>The transmit distance.</value>
@@ -27,181 +134,633 @@
 		{
 			get
 			{
-				IAntennaRelay nearestRelay = this.FindNearestRelay();
-
-				// If there is no available relay nearby...
-				if (nearestRelay == null)
-				{
-					// .. return the distance to Kerbin
-					return this.DistanceTo(this.Kerbin);
+				if (this.KerbinDirect || this.targetRelay == null)
+				{
+					return this.DistanceTo(Kerbin);
 				}
 				else
 				{
-					/// ...otherwise, return the distance to the nearest available relay.
-					return this.DistanceTo(nearestRelay);
-				}
-			}
-		}
-
-		/// <summary>
-		/// The maximum distance at which this relay can operate.
-		/// </summary>
-		/// <value>The max transmit distance.</value>
-		public virtual float maxTransmitDistance
+					return this.DistanceTo(this.targetRelay);
+				}
+			}
+		}
+
+		public virtual ConnectionStatus LinkStatus
+		{
+			get;
+			protected set;
+		}
+
+		/// <summary>
+		/// Gets the nominal transmit distance at which the Antenna behaves just as prescribed by Squad's config.
+		/// </summary>
+		public virtual double nominalTransmitDistance
 		{
 			get;
 			set;
 		}
 
 		/// <summary>
-		/// Gets a value indicating whether this <see cref="AntennaRange.ProtoDataTransmitter"/> has been checked during
-		/// the current relay attempt.
-		/// </summary>
-		/// <value><c>true</c> if relay checked; otherwise, <c>false</c>.</value>
-		public virtual bool relayChecked
+		/// The maximum distance at which this relay can operate.
+		/// </summary>
+		/// <value>The max transmit distance.</value>
+		public virtual double maxTransmitDistance
 		{
 			get;
-			protected set;
+			set;
 		}
 
 		/// <summary>
 		/// Determines whether this instance can transmit.
 		/// </summary>
 		/// <returns><c>true</c> if this instance can transmit; otherwise, <c>false</c>.</returns>
-		public bool CanTransmit()
-		{
-			if (this.transmitDistance > this.maxTransmitDistance)
-			{
-				return false;
+		public virtual bool CanTransmit()
+		{
+			return this.canTransmit;
+		}
+
+		/// <summary>
+		/// Finds the nearest relay.
+		/// </summary>
+		/// <returns>The nearest relay or null, if no relays in range.</returns>
+		public void FindNearestRelay()
+		{
+			if (!FlightGlobals.ready)
+			{
+				return;
+			}
+
+			Tools.DebugLogger log;
+			#if DEBUG
+			log = Tools.DebugLogger.New(this);
+			#endif
+
+			// Skip vessels that have already been checked for a nearest relay this pass.
+			if (this.isChecked)
+			{
+				log.AppendFormat("{0}: Target search skipped because our vessel has been checked already this search.",
+					this);
+				log.Print();
+				return;
+			}
+
+			log.AppendFormat("{0}: Target search started).", this.ToString());
+
+			#if DEBUG
+			try {
+			#endif
+			// Set this vessel as checked, so that we don't check it again.
+			this.isChecked = true;
+
+			// Blank everything we're trying to find before the search.
+			this.firstOccludingBody = null;
+			this.bestOccludedRelay = null;
+			this.targetRelay = null;
+			this.nearestRelay = null;
+
+			// Default to KerbinDirect = true in case something in here doesn't work right.
+			this.KerbinDirect = true;
+
+			CelestialBody bodyOccludingBestOccludedRelay = null;
+			IAntennaRelay needle;
+
+			// double nearestRelaySqrDistance = double.PositiveInfinity;
+			// double bestOccludedSqrDistance = double.PositiveInfinity;
+
+			// double maxTransmitSqrDistance = double.NegativeInfinity;
+
+			double nearestRelaySqrQuotient = double.PositiveInfinity;
+			double bestOccludedSqrQuotient = double.PositiveInfinity;
+
+			/*
+			 * Loop through all the vessels and exclude this vessel, vessels of the wrong type, and vessels that are too
+			 * far away.  When we find a candidate, get through its antennae for relays which have not been checked yet
+			 * and that can transmit.  Once we find a suitable candidate, assign it to nearestRelay for comparison
+			 * against future finds.
+			 * */
+			Vessel potentialVessel;
+			IAntennaRelay potentialBestRelay;
+			CelestialBody fob;
+
+			// IList<IAntennaRelay> vesselRelays;
+			for (int vIdx = 0; vIdx < FlightGlobals.Vessels.Count; vIdx++)
+			{
+				log.AppendFormat("\nFetching vessel at index {0}", vIdx);
+				potentialVessel = FlightGlobals.Vessels[vIdx];
+				
+				if (potentialVessel == null)
+				{
+					Tools.PostErrorMessage("{0}: Skipping vessel at index {1} because it is null.", this, vIdx);
+					log.AppendFormat("\n\tSkipping vessel at index {0} because it is null.", vIdx);
+					log.Print();
+					return;
+				}
+				#if DEBUG
+				else
+				{
+					log.AppendFormat("\n\tGot vessel {0}", potentialVessel);
+				}
+				#endif
+
+				// Skip vessels of the wrong type.
+				log.Append("\n\tchecking vessel type");
+				switch (potentialVessel.vesselType)
+				{
+					case VesselType.Debris:
+					case VesselType.Flag:
+					case VesselType.EVA:
+					case VesselType.SpaceObject:
+					case VesselType.Unknown:
+							log.Append("\n\tSkipping because vessel is the wrong type.");
+						continue;
+					default:
+						break;
+				}
+				
+				log.Append("\n\tchecking if vessel is this vessel");
+				// Skip vessels with the wrong ID
+				if (potentialVessel.id == vessel.id)
+				{
+					log.Append("\n\tSkipping because vessel is this vessel.");
+					continue;
+				}
+
+				potentialBestRelay = potentialVessel.GetBestRelay();
+				log.AppendFormat("\n\t\tgot best vessel relay {0}",
+					potentialBestRelay == null ? "null" : potentialBestRelay.ToString());
+
+				if (potentialBestRelay == null)
+				{
+					log.Append("\n\t\t...skipping null relay");
+					continue;
+				}
+
+				// Find the distance from here to the vessel...
+				log.Append("\n\tgetting distance to potential vessel");
+				double potentialSqrDistance = this.sqrDistanceTo(potentialVessel);
+				log.Append("\n\tgetting best vessel relay");
+
+				log.Append("\n\tgetting max link distance to potential relay");
+				double maxLinkSqrDistance;
+
+				if (ARConfiguration.UseAdditiveRanges)
+				{
+					maxLinkSqrDistance = this.maxTransmitDistance * potentialBestRelay.maxTransmitDistance;
+				}
+				else
+				{
+					maxLinkSqrDistance = this.maxTransmitDistance * this.maxTransmitDistance;
+				}
+
+				log.AppendFormat("\n\tmax link distance: {0}", maxLinkSqrDistance);
+
+				double potentialSqrQuotient = potentialSqrDistance / maxLinkSqrDistance;
+
+				log.Append("\n\t\tdoing LOS check");
+				// Skip vessels to which we do not have line of sight.
+				if (
+					ARConfiguration.RequireLineOfSight &&
+					!this.vessel.hasLineOfSightTo(potentialVessel, out fob, ARConfiguration.RadiusRatio)
+				)
+				{
+					log.Append("\n\t\t...failed LOS check");
+
+					log.AppendFormat("\n\t\t\t{0}: Vessel {1} not in line of sight.",
+						this.ToString(), potentialVessel.vesselName);
+					
+					log.AppendFormat("\n\t\t\tpotentialSqrDistance: {0}", potentialSqrDistance);
+					log.AppendFormat("\n\t\t\tbestOccludedSqrQuotient: {0}", bestOccludedSqrQuotient);
+					log.AppendFormat("\n\t\t\tmaxTransmitSqrDistance: {0}", maxLinkSqrDistance);
+
+					if (
+						(potentialSqrQuotient < bestOccludedSqrQuotient) &&
+						(potentialSqrQuotient <= 1d) &&
+						potentialBestRelay.CanTransmit()
+					)
+					{
+						log.Append("\n\t\t...vessel is close enough to and potentialBestRelay can transmit");
+						log.AppendFormat("\n\t\t...{0} found new best occluded relay {1}", this, potentialBestRelay);
+
+						this.bestOccludedRelay = potentialBestRelay;
+						bodyOccludingBestOccludedRelay = fob;
+						bestOccludedSqrQuotient = potentialSqrQuotient;
+					}
+					else
+					{
+						log.Append("\n\t\t...vessel is not close enough to check for occluded relays, carrying on");
+					}
+					
+					continue;
+				}
+
+				log.Append("\n\t\t...passed LOS check");
+
+				/*
+				 * ...so that we can skip the vessel if it is further away than a vessel we've already checked.
+				 * */
+				if (potentialSqrQuotient > nearestRelaySqrQuotient)
+				{
+					
+					log.AppendFormat("\n\t{0}: Vessel {1} discarded because it is farther than another the nearest relay.",
+						this.ToString(),
+						potentialVessel.vesselName
+					);
+					continue;
+				}
+
+				log.Append("\n\t\t...passed distance check");
+
+				if (potentialBestRelay.CanTransmit())
+				{
+					needle = potentialBestRelay;
+					bool isCircular = false;
+
+					int iterCount = 0;
+					while (needle != null)
+					{
+						iterCount++;
+
+						if (needle.KerbinDirect)
+						{
+							break;
+						}
+
+						if (needle.targetRelay == null)
+						{
+							break;
+						}
+
+						if (needle.targetRelay.vessel == this.vessel || needle == this.moduleRef)
+						{
+							isCircular = true;
+							break;
+						}
+
+						// Avoid infinite loops when we're not catching things right.
+						if (iterCount > FlightGlobals.Vessels.Count)
+						{
+							Tools.PostErrorMessage(
+								"[{0}] iterCount exceeded while checking for circular network; assuming it is circular" +
+								"\n\tneedle={1}" +
+								"\n\tthis.moduleRef={2}",
+								this,
+								needle == null ? "null" : string.Format(
+									"{0}, needle.KerbinDirect={1}, needle.targetRelay={2}",
+									needle, needle.KerbinDirect, needle.targetRelay == null ? "null" : string.Format(
+										"{0}\n\tneedle.targetRelay.vessel={1}",
+										needle.targetRelay,
+										needle.targetRelay.vessel == null ?
+											"null" : needle.targetRelay.vessel.vesselName
+									)
+								),
+								this.moduleRef == null ? "null" : this.moduleRef.ToString()
+							);
+							isCircular = true;
+							break;
+						}
+
+						needle = needle.targetRelay;
+					}
+
+					if (!isCircular)
+					{
+						nearestRelaySqrQuotient = potentialSqrQuotient;
+						this.nearestRelay = potentialBestRelay;
+
+						log.AppendFormat("\n\t{0}: found new nearest relay {1} ({2}m²)",
+							this.ToString(),
+							this.nearestRelay.ToString(),
+							Math.Sqrt(nearestRelaySqrQuotient)
+						);
+					}
+					else
+					{
+						log.AppendFormat("\n\t\t...connection to {0} would result in a circular network, skipping",
+							potentialBestRelay
+						);
+					}
+				}
+			}
+
+			CelestialBody bodyOccludingKerbin = null;
+
+			double kerbinSqrDistance = this.vessel.DistanceTo(Kerbin) - Kerbin.Radius;
+			kerbinSqrDistance *= kerbinSqrDistance;
+
+			double kerbinSqrQuotient;
+
+			if (ARConfiguration.UseAdditiveRanges)
+			{
+				kerbinSqrQuotient = kerbinSqrDistance /
+					(this.maxTransmitDistance * ARConfiguration.KerbinRelayRange);
 			}
 			else
 			{
-				return true;
-			}
-		}
-
-		/// <summary>
-		/// Finds the nearest relay.
-		/// </summary>
-		/// <returns>The nearest relay or null, if no relays in range.</returns>
-		public IAntennaRelay FindNearestRelay()
-		{
-			// Set this relay as checked, so that we don't check it again.
-			this.relayChecked = true;
-
-			// Get a list of vessels within transmission range.
-			List<Vessel> nearbyVessels = FlightGlobals.Vessels
-				.Where(v => (v.GetWorldPos3D() - vessel.GetWorldPos3D()).magnitude < this.maxTransmitDistance)
-					.ToList();
-
-			Tools.PostDebugMessage(string.Format(
-				"{0}: Vessels in range: {1}",
-				this.GetType().Name,
-				nearbyVessels.Count
-				));
-
-			// Remove this vessel.
-			nearbyVessels.RemoveAll(v => v.id == vessel.id);
-
-			Tools.PostDebugMessage(string.Format(
-				"{0}: Vessels in range excluding self: {1}",
-				this.GetType().Name,
-				nearbyVessels.Count
-				));
-
-			// Get a flattened list of all IAntennaRelay modules and protomodules in transmission range.
-			List<IAntennaRelay> nearbyRelays = nearbyVessels.SelectMany(v => v.GetAntennaRelays()).ToList();
-
-			Tools.PostDebugMessage(string.Format(
-				"{0}: Found {1} nearby relays.",
-				this.GetType().Name,
-				nearbyRelays.Count
-				));
-
-			// Remove all relays already checked this time.
-			nearbyRelays.RemoveAll(r => r.relayChecked);
-
-			Tools.PostDebugMessage(string.Format(
-				"{0}: Found {1} nearby relays not already checked.",
-				this.GetType().Name,
-				nearbyRelays.Count
-				));
-
-			// Remove all relays that cannot transmit.
-			// This call to r.CanTransmit() starts a depth-first recursive search for relays with a path back to Kerbin.
-			nearbyRelays.RemoveAll(r => !r.CanTransmit());
-
-			Tools.PostDebugMessage(string.Format(
-				"{0}: Found {1} nearby relays not already checked that can transmit.",
-				this.GetType().Name,
-				nearbyRelays.Count
-				));
-
-			// Sort the available relays by distance.
-			nearbyRelays.Sort(new RelayComparer(this.vessel));
-
-			// Get the nearest available relay, or null if there are no available relays nearby.
-			IAntennaRelay nearestRelay = nearbyRelays.FirstOrDefault();
-
+				kerbinSqrQuotient = kerbinSqrDistance /
+					(this.maxTransmitDistance * this.maxTransmitDistance);
+			}
+
+			log.AppendFormat("\n{0} ({1}): Search done, figuring status.", this.ToString(), this.GetType().Name);
+			log.AppendFormat(
+				"\n{0}: nearestRelay={1} ({2}m²)), bestOccludedRelay={3} ({4}m²), kerbinSqrDistance={5}m²)",
+				this,
+				this.nearestRelay == null ? "null" : this.nearestRelay.ToString(),
+				nearestRelaySqrQuotient,
+				this.bestOccludedRelay == null ? "null" : this.bestOccludedRelay.ToString(),
+				bestOccludedSqrQuotient,
+				kerbinSqrDistance
+			);
+
+			// If we don't have LOS to Kerbin, focus on relays
+			if (
+				ARConfiguration.RequireLineOfSight &&
+				!this.vessel.hasLineOfSightTo(Kerbin, out bodyOccludingKerbin, ARConfiguration.RadiusRatio)
+			)
+			{
+				log.AppendFormat("\n\tKerbin LOS is blocked by {0}.", bodyOccludingKerbin.bodyName);
+
+				// nearestRelaySqrDistance will be infinity if all relays are occluded or none exist.
+				// Therefore, this will only be true if a valid relay is in range.
+				if (nearestRelaySqrQuotient <= 1d)
+				{
+					log.AppendFormat("\n\t\tCan transmit to nearby relay {0} ({1} <= {2}).",
+						this.nearestRelay == null ? "null" : this.nearestRelay.ToString(),
+						nearestRelaySqrQuotient, 1d);
+
+					this.KerbinDirect = false;
+					this.canTransmit = true;
+					this.targetRelay = this.nearestRelay;
+				}
+				// If this isn't true, we can't transmit, but pick a second best of bestOccludedRelay and Kerbin anyway
+				else
+				{
+					log.AppendFormat("\n\t\tCan't transmit to nearby relay {0} ({1} > {2}).",
+						this.nearestRelay == null ? "null" : this.nearestRelay.ToString(),
+						nearestRelaySqrQuotient, 1d);
+
+					this.canTransmit = false;
+
+					// If the best occluded relay is closer than Kerbin, check it against the nearest relay.
+					// Since bestOccludedSqrDistance is infinity if there are no occluded relays, this is safe
+					if (bestOccludedSqrQuotient < kerbinSqrQuotient)
+					{
+						log.AppendFormat("\n\t\t\tBest occluded relay is closer than Kerbin ({0} < {1})",
+							bestOccludedRelay, kerbinSqrDistance);
+						
+						this.KerbinDirect = false;
+
+						// If the nearest relay is closer than the best occluded relay, pick it.
+						// Since nearestRelaySqrDistane is infinity if there are no nearby relays, this is safe.
+						if (nearestRelaySqrQuotient < bestOccludedSqrQuotient)
+						{
+							log.AppendFormat("\n\t\t\t\t...but the nearest relay is closer ({0} < {1}), so picking it.",
+								nearestRelaySqrQuotient, bestOccludedSqrQuotient);
+							
+							this.targetRelay = this.nearestRelay;
+							this.firstOccludingBody = null;
+						}
+						// Otherwise, target the best occluded relay.
+						else
+						{
+							log.AppendFormat("\n\t\t\t\t...and closer than the nearest relay ({0} >= {1}), so picking it.",
+								nearestRelaySqrQuotient, bestOccludedSqrQuotient);
+							
+							this.targetRelay = bestOccludedRelay;
+							this.firstOccludingBody = bodyOccludingBestOccludedRelay;
+						}
+					}
+					// Otherwise, check Kerbin against the nearest relay.
+					// Since we have LOS, blank the first occluding body.
+					else
+					{
+						log.AppendFormat("\n\t\t\tKerbin is closer than the best occluded relay ({0} >= {1})",
+							bestOccludedRelay, kerbinSqrDistance);
+						
+						// If the nearest relay is closer than Kerbin, pick it.
+						// Since nearestRelaySqrDistane is infinity if there are no nearby relays, this is safe.
+						if (nearestRelaySqrQuotient < kerbinSqrQuotient)
+						{
+							log.AppendFormat("\n\t\t\t\t...but the nearest relay is closer ({0} < {1}), so picking it.",
+								nearestRelaySqrQuotient, kerbinSqrQuotient);
+							
+							this.KerbinDirect = false;
+							this.firstOccludingBody = null;
+							this.targetRelay = this.nearestRelay;
+						}
+						// Otherwise, pick Kerbin.
+						else
+						{
+							log.AppendFormat("\n\t\t\t\t...and closer than the nearest relay ({0} >= {1}), so picking it.",
+								nearestRelaySqrQuotient, kerbinSqrQuotient);
+							
+							this.KerbinDirect = true;
+							this.firstOccludingBody = bodyOccludingKerbin;
+							this.targetRelay = null;
+						}
+					}
+				}
+			}
+			// If we do have LOS to Kerbin, try to prefer the closest of nearestRelay and Kerbin
+			else
+			{
+				log.AppendFormat("\n\tKerbin is in LOS.");
+
+				// If the nearest relay is closer than Kerbin and in range, transmit to it.
+				if (nearestRelaySqrQuotient <= 1d)
+				{
+					log.AppendFormat("\n\t\tCan transmit to nearby relay {0} ({1} <= {2}).",
+						this.nearestRelay == null ? "null" : this.nearestRelay.ToString(),
+						nearestRelaySqrQuotient, 1d);
+
+					this.canTransmit = true;
+
+					// If the nearestRelay is closer than Kerbin, use it.
+					if (nearestRelaySqrQuotient < kerbinSqrQuotient)
+					{
+						log.AppendFormat("\n\t\t\tPicking relay {0} over Kerbin ({1} < {2}).",
+							this.nearestRelay == null ? "null" : this.nearestRelay.ToString(),
+							nearestRelaySqrQuotient, kerbinSqrQuotient);
+
+						this.KerbinDirect = false;
+						this.targetRelay = this.nearestRelay;
+					}
+					// Otherwise, Kerbin is closer, so use it.
+					else
+					{
+						log.AppendFormat("\n\t\t\tBut picking Kerbin over nearby relay {0} ({1} >= {2}).",
+							this.nearestRelay == null ? "null" : this.nearestRelay.ToString(),
+							nearestRelaySqrQuotient, kerbinSqrQuotient);
+
+						this.KerbinDirect = true;
+						this.targetRelay = null;
+					}
+				}
+				// If the nearest relay is out of range, we still need to check on Kerbin.
+				else
+				{
+					log.AppendFormat("\n\t\tCan't transmit to nearby relay {0} ({1} > {2}).",
+						this.nearestRelay == null ? "null" : this.nearestRelay.ToString(),
+							nearestRelaySqrQuotient, 1d);
+
+					// If Kerbin is in range, use it.
+					if (kerbinSqrQuotient <= 1d)
+					{
+						log.AppendFormat("\n\t\t\tCan transmit to Kerbin ({0} <= {1}).",
+							kerbinSqrQuotient, 1d);
+
+						this.canTransmit = true;
+						this.KerbinDirect = true;
+						this.targetRelay = null;
+					}
+					// If Kerbin is out of range and the nearest relay is out of range, pick a second best between
+					// Kerbin and bestOccludedRelay
+					else
+					{
+						log.AppendFormat("\n\t\t\tCan't transmit to Kerbin ({0} > {1}).",
+								kerbinSqrQuotient, 1d);
+
+						this.canTransmit = false;
+
+						// If the best occluded relay is closer than Kerbin, check it against the nearest relay.
+						// Since bestOccludedSqrDistance is infinity if there are no occluded relays, this is safe
+						if (bestOccludedSqrQuotient < kerbinSqrQuotient)
+						{
+							log.AppendFormat("\n\t\t\tBest occluded relay is closer than Kerbin ({0} < {1})",
+								bestOccludedRelay, kerbinSqrDistance);
+							
+							this.KerbinDirect = false;
+
+							// If the nearest relay is closer than the best occluded relay, pick it.
+							// Since nearestRelaySqrDistane is infinity if there are no nearby relays, this is safe.
+							if (nearestRelaySqrQuotient < bestOccludedSqrQuotient)
+							{
+								log.AppendFormat("\n\t\t\t\t...but the nearest relay is closer ({0} < {1}), so picking it.",
+									nearestRelaySqrQuotient, bestOccludedSqrQuotient);
+								
+								this.targetRelay = this.nearestRelay;
+								this.firstOccludingBody = null;
+							}
+							// Otherwise, target the best occluded relay.
+							else
+							{
+								log.AppendFormat("\n\t\t\t\t...and closer than the nearest relay ({0} >= {1}), so picking it.",
+									nearestRelaySqrQuotient, bestOccludedSqrQuotient);
+								
+								this.targetRelay = bestOccludedRelay;
+								this.firstOccludingBody = bodyOccludingBestOccludedRelay;
+							}
+						}
+						// Otherwise, check Kerbin against the nearest relay.
+						// Since we have LOS, blank the first occluding body.
+						else
+						{
+							log.AppendFormat("\n\t\t\tKerbin is closer than the best occluded relay ({0} >= {1})",
+								bestOccludedRelay, kerbinSqrDistance);
+							
+							this.firstOccludingBody = null;
+
+							// If the nearest relay is closer than Kerbin, pick it.
+							// Since nearestRelaySqrDistane is infinity if there are no nearby relays, this is safe.
+							if (nearestRelaySqrQuotient < kerbinSqrQuotient)
+							{
+								log.AppendFormat("\n\t\t\t\t...but the nearest relay is closer ({0} < {1}), so picking it.",
+									nearestRelaySqrQuotient, kerbinSqrQuotient);
+								
+								this.KerbinDirect = false;
+								this.targetRelay = this.nearestRelay;
+							}
+							// Otherwise, pick Kerbin.
+							else
+							{
+								log.AppendFormat("\n\t\t\t\t...and closer than the nearest relay ({0} >= {1}), so picking it.",
+									nearestRelaySqrQuotient, kerbinSqrQuotient);
+								
+								this.KerbinDirect = true;
+								this.targetRelay = null;
+							}
+						}
+					}
+				}
+			}
+
+			if (ARConfiguration.UseAdditiveRanges)
+			{
+				if (this.KerbinDirect)
+				{
+					this.NominalLinkDistance = Math.Sqrt(this.nominalTransmitDistance * ARConfiguration.KerbinNominalRange);
+					this.MaximumLinkDistance = Math.Sqrt(this.maxTransmitDistance * ARConfiguration.KerbinRelayRange);
+				}
+				else
+				{
+					this.NominalLinkDistance = Math.Sqrt(this.nominalTransmitDistance * this.targetRelay.nominalTransmitDistance);
+					this.MaximumLinkDistance = Math.Sqrt(this.maxTransmitDistance * this.targetRelay.maxTransmitDistance);
+				}
+			}
+			else
+			{
+				this.NominalLinkDistance = this.nominalTransmitDistance;
+				this.MaximumLinkDistance = this.maxTransmitDistance;
+			}
+
+			if (this.canTransmit)
+			{
+				if (this.transmitDistance < this.NominalLinkDistance)
+				{
+					this.LinkStatus = ConnectionStatus.Optimal;
+				}
+				else
+				{
+					this.LinkStatus = ConnectionStatus.Suboptimal;
+				}
+			}
+			else
+			{
+				this.LinkStatus = ConnectionStatus.None;
+			}
+
+			log.AppendFormat("\n{0}: Target search and status determination complete.", this.ToString());
+			
+			#if DEBUG
+			} catch (Exception ex) {
+				log.AppendFormat("\nCaught {0}: {1}\n{2}", ex.GetType().FullName, ex.ToString(), ex.StackTrace);
+			#if QUIT_ON_EXCEPTION
+				UnityEngine.Application.Quit();
+			#endif
+			} finally {
+			#endif
+			log.Print(false);
+			#if DEBUG
+			}
+			#endif
 			// Now that we're done with our recursive CanTransmit checks, flag this relay as not checked so it can be
 			// used next time.
-			this.relayChecked = false;
-
-			// Return the nearest available relay, or null if there are no available relays nearby.
-			return nearestRelay;
-		}
-
-		/// <summary>
-		/// Initializes a new instance of the <see cref="AntennaRange.ProtoDataTransmitter"/> class.
-		/// </summary>
-		/// <param name="ms"><see cref="ProtoPartModuleSnapshot"/></param>
-		public AntennaRelay(Vessel v)
-		{
-			this.vessel = v;
-
-			// HACK: This might not be safe in all circumstances, but since AntennaRelays are not built until Start,
-			// we hope it is safe enough.
-			this.Kerbin = FlightGlobals.Bodies.FirstOrDefault(b => b.name == "Kerbin");
-		}
-
-		/*
-		 * Class implementing IComparer<IAntennaRelay> for use in sorting relays by distance.
-		 * */
-		internal class RelayComparer : IComparer<IAntennaRelay>
-		{
-			/// <summary>
-			/// The reference Vessel (usually the active vessel).
-			/// </summary>
-			protected Vessel referenceVessel;
-
-			// We don't want no stinking public parameterless constructors.
-			private RelayComparer() {}
-
-			/// <summary>
-			/// Initializes a new instance of the <see cref="AntennaRange.AntennaRelay+RelayComparer"/> class for use
-			/// in sorting relays by distance.
-			/// </summary>
-			/// <param name="reference">The reference Vessel</param>
-			public RelayComparer(Vessel reference)
-			{
-				this.referenceVessel = reference;
-			}
-
-			/// <summary>
-			/// Compare the <see cref="IAntennaRelay"/>s "one" and "two".
-			/// </summary>
-			/// <param name="one">The first IAntennaRelay in the comparison</param>
-			/// <param name="two">The second IAntennaRelay in the comparison</param>
-			public int Compare(IAntennaRelay one, IAntennaRelay two)
-			{
-				double distanceOne;
-				double distanceTwo;
-
-				distanceOne = one.vessel.DistanceTo(referenceVessel);
-				distanceTwo = two.vessel.DistanceTo(referenceVessel);
-
-				return distanceOne.CompareTo(distanceTwo);
-			}
+			this.isChecked = false;
+		}
+
+		/// <summary>
+		/// Returns a <see cref="System.String"/> that represents the current <see cref="AntennaRange.AntennaRelay"/>.
+		/// </summary>
+		/// <returns>A <see cref="System.String"/> that represents the current <see cref="AntennaRange.AntennaRelay"/>.</returns>
+		public override string ToString()
+		{
+			if (this is ProtoAntennaRelay)
+			{
+				return (this as ProtoAntennaRelay).ToString();
+			}
+			return this.moduleRef.ToString();
+		}
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="AntennaRange.AntennaRelay"/> class.
+		/// </summary>
+		/// <param name="module">The module reference underlying this AntennaRelay,
+		/// as an <see cref="AntennaRange.IAntennaRelay"/></param>
+		public AntennaRelay(IAntennaRelay module)
+		{
+			this.moduleRef = module;
+			this.isChecked = false;
+
+			Tools.PostLogMessage("{0}: constructed {1}", this.GetType().Name, this.ToString());
 		}
 	}
 }

file:b/ChangeLog (new)
--- /dev/null
+++ b/ChangeLog
@@ -1,1 +1,7 @@
+2014-01-14  toadicus  <>
 
+	* ModuleLimitedDataTransmitter.cs: Added a ":" to the
+	  transmission communications for consistency with stock
+	  behavior.
+
+

file:a/Extensions.cs (deleted)
--- a/Extensions.cs
+++ /dev/null
@@ -1,140 +1,1 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
 
-namespace AntennaRange
-{
-	/*
-	 * A class of utility extensions for Vessels and Relays to help find a relay path back to Kerbin.
-	 * */
-	public static class Extensions
-	{
-		/// <summary>
-		/// Returns the distance between this Vessel and another Vessel.
-		/// </summary>
-		/// <param name="vesselOne">This <see cref="Vessel"/><see ></param>
-		/// <param name="vesselTwo">Another <see cref="Vessel"/></param>
-		public static double DistanceTo(this Vessel vesselOne, Vessel vesselTwo)
-		{
-			return (vesselOne.GetWorldPos3D() - vesselTwo.GetWorldPos3D()).magnitude;
-		}
-
-		/// <summary>
-		/// Returns the distance between this Vessel and a CelestialBody
-		/// </summary>
-		/// <param name="vessel">This Vessel</param>
-		/// <param name="body">A <see cref="CelestialBody"/></param>
-		public static double DistanceTo(this Vessel vessel, CelestialBody body)
-		{
-			return (vessel.GetWorldPos3D() - body.position).magnitude;
-		}
-
-		/// <summary>
-		/// Returns the distance between this IAntennaRelay and a Vessel
-		/// </summary>
-		/// <param name="relay">This <see cref="IAntennaRelay"/></param>
-		/// <param name="Vessel">A <see cref="Vessel"/></param>
-		public static double DistanceTo(this IAntennaRelay relay, Vessel Vessel)
-		{
-			return relay.vessel.DistanceTo(Vessel);
-		}
-
-		/// <summary>
-		/// Returns the distance between this IAntennaRelay and a CelestialBody
-		/// </summary>
-		/// <param name="relay">This <see cref="IAntennaRelay"/></param>
-		/// <param name="body">A <see cref="CelestialBody"/></param>
-		public static double DistanceTo(this IAntennaRelay relay, CelestialBody body)
-		{
-			return relay.vessel.DistanceTo(body);
-		}
-
-		/// <summary>
-		/// Returns the distance between this IAntennaRelay and another IAntennaRelay
-		/// </summary>
-		/// <param name="relayOne">This <see cref="IAntennaRelay"/></param>
-		/// <param name="relayTwo">Another <see cref="IAntennaRelay"/></param>
-		public static double DistanceTo(this IAntennaRelay relayOne, IAntennaRelay relayTwo)
-		{
-			return relayOne.DistanceTo(relayTwo.vessel);
-		}
-
-		/// <summary>
-		/// Returns all of the PartModules or ProtoPartModuleSnapshots implementing IAntennaRelay in this Vessel.
-		/// </summary>
-		/// <param name="vessel">This <see cref="Vessel"/></param>
-		public static IEnumerable<IAntennaRelay> GetAntennaRelays (this Vessel vessel)
-		{
-			Tools.PostDebugMessage(string.Format(
-				"{0}: Getting antenna relays from vessel {1}.",
-				"IAntennaRelay",
-				vessel.name
-			));
-
-			List<IAntennaRelay> Transmitters;
-
-			// If the vessel is loaded, we can fetch modules implementing IAntennaRelay directly.
-			if (vessel.loaded) {
-				Tools.PostDebugMessage(string.Format(
-					"{0}: vessel {1} is loaded.",
-					"IAntennaRelay",
-					vessel.name
-					));
-
-				// Gets a list of PartModules implementing IAntennaRelay
-				Transmitters = vessel.Parts
-					.SelectMany (p => p.Modules.OfType<IAntennaRelay> ())
-					.ToList();
-			}
-			// If the vessel is not loaded, we need to find ProtoPartModuleSnapshots with a true IsAntenna field.
-			else
-			{
-				Tools.PostDebugMessage(string.Format(
-					"{0}: vessel {1} is not loaded.",
-					"IAntennaRelay",
-					vessel.name
-					));
-
-				Transmitters = new List<IAntennaRelay>();
-
-				// Loop through the ProtoPartModuleSnapshots in this Vessel
-				foreach (ProtoPartModuleSnapshot ms in vessel.protoVessel.protoPartSnapshots.SelectMany(ps => ps.modules))
-				{
-					// If they are antennas...
-					if (ms.IsAntenna())
-					{
-						// ...add a new ProtoAntennaRelay wrapper to the list.
-						Transmitters.Add(new ProtoAntennaRelay(ms, vessel));
-					}
-				}
-			}
-
-			Tools.PostDebugMessage(string.Format(
-				"{0}: vessel {1} has {2} transmitters.",
-				"IAntennaRelay",
-				vessel.name,
-				Transmitters.Count
-				));
-
-			// Return the list of IAntennaRelays
-			return Transmitters;
-		}
-
-		// Returns true if this PartModule contains a True IsAntenna field, false otherwise.
-		public static bool IsAntenna (this PartModule module)
-		{
-			return module.Fields.GetValue<bool> ("IsAntenna");
-		}
-
-		// Returns true if this ProtoPartModuleSnapshot contains a persistent True IsAntenna field, false otherwise
-		public static bool IsAntenna(this ProtoPartModuleSnapshot protomodule)
-		{
-			bool result;
-
-			return Boolean.TryParse (protomodule.moduleValues.GetValue ("IsAntenna") ?? "False", out result)
-				? result : false;
-		}
-	}
-}
-
-

--- /dev/null
+++ b/GameData/AntennaRange/ATM_AntennaRange.cfg
@@ -1,1 +1,15 @@
-
+ACTIVE_TEXTURE_MANAGER_CONFIG
+{
+	folder = AntennaRange
+	enabled  = true
+	OVERRIDES
+	{
+		AntennaRange/.*
+		{
+			compress = true
+			mipmaps = false
+			scale = 1
+			max_size = 0
+		}
+	}
+}

--- /dev/null
+++ b/GameData/AntennaRange/AntennaRange.cfg
@@ -1,1 +1,140 @@
+// AntennaRange
+//
+// AntennaRange.cfg
+//
+// Copyright © 2014-2015, 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.
+//
+// This software uses the ModuleManager library © 2013 ialdabaoth, used under a Creative Commons Attribution-ShareAlike
+// 3.0 Uported License.
+//
+// Specifications:
+// nominalRange:	The distance from Kerbin at which the antenna will perform exactly as prescribed by
+//					packetResourceCost and packetSize.
+// maxPowerFactor:	The multiplier on packetResourceCost that defines the maximum power output of the antenna.  When the
+//					power cost exceeds packetResourceCost * maxPowerFactor, transmission will fail.
+// maxDataFactor:	The multipler on packetSize that defines the maximum data bandwidth of the antenna.
+// 
 
+@PART[longAntenna]:FOR[AntennaRange]:NEEDS[!RemoteTech2]
+{
+	@MODULE[ModuleDataTransmitter]
+	{
+		@name = ModuleLimitedDataTransmitter
+		nominalRange = 6364
+		simpleRange = 20500000
+		maxPowerFactor = 8
+		maxDataFactor = 4
+	}
+
+	MODULE
+	{
+		name = ModuleScienceContainer
+
+		dataIsCollectable = true
+		dataIsStorable = false
+
+		storageRange = 2
+	}
+}
+
+@PART[mediumDishAntenna]:FOR[AntennaRange]:NEEDS[!RemoteTech2]
+{
+	@MODULE[ModuleDataTransmitter]
+	{
+		@name = ModuleLimitedDataTransmitter
+		nominalRange = 3500000000
+		simpleRange = 18000000000
+		maxPowerFactor = 4
+		maxDataFactor = 8
+	}
+
+	MODULE
+	{
+		name = ModuleScienceContainer
+
+		dataIsCollectable = true
+		dataIsStorable = false
+
+		storageRange = 2
+	}
+}
+
+@PART[commDish]:FOR[AntennaRange]:NEEDS[!RemoteTech2]
+{
+	@MODULE[ModuleDataTransmitter]
+	{
+		@name = ModuleLimitedDataTransmitter
+		@packetResourceCost /= 1.414213
+		nominalRange = 10000000000
+		simpleRange = 56250000000
+		maxPowerFactor = 16
+		maxDataFactor = 2
+	}
+
+	MODULE
+	{
+		name = ModuleScienceContainer
+
+		dataIsCollectable = true
+		dataIsStorable = false
+
+		storageRange = 2
+	}
+}
+
+TRACKING_STATION_RANGES
+{
+	range = 800000
+	range = 200000000000
+	range = 2250000000000
+}
+
+EVA_MODULE
+{
+	name = ModuleLimitedDataTransmitter
+
+	nominalRange = 1389
+	maxPowerFactor = 1
+	maxDataFactor = 1
+
+	packetInterval = 0.2
+	packetSize = 1
+	packetResourceCost = 6.25
+
+	requiredResource = ElectricCharge
+}
+
+EVA_RESOURCE
+{
+	name = ElectricCharge
+	amount = 100
+	maxAmount = 100
+}
+
+@EVA_RESOURCE[ElectricCharge]:AFTER[AntennaRange]:NEEDS[TacLifeSupport]
+{
+	!name = DELETE
+}
+

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--- a/IAntennaRelay.cs
+++ b/IAntennaRelay.cs
@@ -1,43 +1,102 @@
+// AntennaRange
+//
+// IAntennaRelay.cs
+//
+// Copyright © 2014-2015, 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;
 
 namespace AntennaRange
 {
-	/*
-	 * Interface defining the basic functionality of AntennaRelay modules for AntennaRange.
-	 * */
+	/// <summary>
+	/// Interface defining the basic functionality of AntennaRelay modules for AntennaRange.
+	/// </summary>
 	public interface IAntennaRelay
 	{
 		/// <summary>
 		/// Gets the parent Vessel.
 		/// </summary>
-		/// <value>The parent Vessel.</value>
 		Vessel vessel { get; }
+
+		/// <summary>
+		/// Gets the target <see cref="AntennaRange.IAntennaRelay"/>relay.
+		/// </summary>
+		IAntennaRelay targetRelay { get; }
+
+		/// <summary>
+		/// Gets a value indicating whether this <see cref="AntennaRange.IAntennaRelay"/> Relay is communicating
+		/// directly with Kerbin.
+		/// </summary>
+		bool KerbinDirect { get; }
+
+		double NominalLinkDistance { get; }
+		double MaximumLinkDistance { 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; }
+
+		ConnectionStatus LinkStatus { get; }
+
+		/// <summary>
+		/// Gets the nominal transmit distance at which the Antenna behaves just as prescribed by Squad's config.
+		/// </summary>
+		double nominalTransmitDistance { get; }
 
 		/// <summary>
 		/// The maximum distance at which this relay can operate.
 		/// </summary>
-		/// <value>The max transmit distance.</value>
-		float maxTransmitDistance { get; }
+		double maxTransmitDistance { get; }
 
 		/// <summary>
-		/// Gets a value indicating whether this <see cref="AntennaRange.ProtoDataTransmitter"/> has been checked during
-		/// the current relay attempt.
+		/// The first CelestialBody blocking line of sight to a 
 		/// </summary>
-		/// <value><c>true</c> if relay checked; otherwise, <c>false</c>.</value>
-		bool relayChecked { get; }
+		CelestialBody firstOccludingBody { get; }
+
+		/// <summary>
+		/// Gets the Part title.
+		/// </summary>
+		string Title { get; }
 
 		/// <summary>
 		/// Determines whether this instance can transmit.
+		/// <c>true</c> if this instance can transmit; otherwise, <c>false</c>.
 		/// </summary>
-		/// <returns><c>true</c> if this instance can transmit; otherwise, <c>false</c>.</returns>
 		bool CanTransmit();
+
+		/// <summary>
+		/// Finds the nearest relay.
+		/// </summary>
+		void FindNearestRelay();
+
+		/// <summary>
+		/// Returns a <see cref="System.String"/> that represents the current <see cref="AntennaRange.IAntennaRelay"/>.
+		/// </summary>
+		string ToString();
 	}
 }
 

--- /dev/null
+++ b/ModuleLimitedDataTransmitter.cs
@@ -1,1 +1,927 @@
-
+// AntennaRange
+//
+// ModuleLimitedDataTransmitter.cs
+//
+// Copyright © 2014-2015, 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 System.Text;
+using ToadicusTools;
+using UnityEngine;
+
+namespace AntennaRange
+{
+	/// <summary>
+	/// <para>ModuleLimitedDataTransmitter is designed as a drop-in replacement for ModuleDataTransmitter, and handles
+	/// rangefinding, power scaling, and data scaling for antennas during science transmission.  Its functionality
+	/// varies with three tunables: nominalRange, maxPowerFactor, and maxDataFactor, set in .cfg files.</para>
+	/// 
+	/// <para>In general, the scaling functions assume the following relation:</para>
+	/// 
+	///	<para>	D² α P/R,</para>
+	/// 
+	/// <para>where D is the total transmission distance, P is the transmission power, and R is the data rate.</para>
+	/// </summary>
+	public class ModuleLimitedDataTransmitter : ModuleDataTransmitter, IScienceDataTransmitter, IAntennaRelay
+	{
+		// Stores the packetResourceCost as defined in the .cfg file.
+		private float _basepacketResourceCost;
+
+		// Stores the packetSize as defined in the .cfg file.
+		private float _basepacketSize;
+
+		// Every antenna is a relay.
+		private AntennaRelay relay;
+
+		// Sometimes we will need to communicate errors; this is how we do it.
+		private ScreenMessage ErrorMsg;
+
+		/// <summary>
+		/// When additive ranges are enabled, the distance from Kerbin at which the antenna will perform exactly as
+		/// prescribed by packetResourceCost and packetSize.
+		/// </summary>
+		[KSPField(isPersistant = false)]
+		public double nominalRange;
+
+		/// <summary>
+		/// When additive ranges are disabled, the distance from Kerbin at which the antenna will perform exactly as
+		/// prescribed by packetResourceCost and packetSize.
+		/// </summary>
+		[KSPField(isPersistant = false)]
+		public double simpleRange;
+
+		/// <summary>
+		/// Relay status string for use in action menus.
+		/// </summary>
+		[KSPField(isPersistant = false, guiActive = true, guiName = "Status")]
+		public string UIrelayStatus;
+
+		/// <summary>
+		/// Relay target string for use in action menus.
+		/// </summary>
+		[KSPField(isPersistant = false, guiActive = true, guiName = "Relay")]
+		public string UIrelayTarget;
+
+		/// <summary>
+		/// Transmit distance string for use in action menus.
+		/// </summary>
+		[KSPField(isPersistant = false, guiActive = true, guiName = "Transmission Distance")]
+		public string UItransmitDistance;
+
+		/// <summary>
+		/// The nominal range string for use in action menus.
+		/// </summary>
+		[KSPField(isPersistant = false, guiActive = true, guiName = "Nominal Range")]
+		public string UInominalLinkDistance;
+
+		/// <summary>
+		/// Maximum distance string for use in action menus.
+		/// </summary>
+		[KSPField(isPersistant = false, guiActive = true, guiName = "Maximum Range")]
+		public string UImaxTransmitDistance;
+
+		/// <summary>
+		/// Packet size string for use in action menus.
+		/// </summary>
+		[KSPField(isPersistant = false, guiActive = true, guiName = "Packet Size")]
+		public string UIpacketSize;
+
+		/// <summary>
+		/// Packet cost string for use in action menus.
+		/// </summary>
+		[KSPField(isPersistant = false, guiActive = true, guiName = "Packet Cost")]
+		public string UIpacketCost;
+
+		/// <summary>
+		/// The multiplier on packetResourceCost that defines the maximum power output of the antenna.  When the power
+		/// cost exceeds packetResourceCost * maxPowerFactor, transmission will fail.
+		/// </summary>
+		[KSPField(isPersistant = false)]
+		public float maxPowerFactor;
+
+		/// <summary>
+		/// The multipler on packetSize that defines the maximum data bandwidth of the antenna.
+		/// </summary>
+		[KSPField(isPersistant = false)]
+		public float maxDataFactor;
+
+		/// <summary>
+		/// The packet throttle.
+		/// </summary>
+		[KSPField(
+			isPersistant = true,
+			guiName = "Packet Throttle",
+			guiUnits = "%",
+			guiActive = true,
+			guiActiveEditor = false
+		)]
+		[UI_FloatRange(maxValue = 100f, minValue = 2.5f, stepIncrement = 2.5f)]
+		public float packetThrottle;
+
+		private bool actionUIUpdate;
+
+		/*
+		 * Properties
+		 * */
+		/// <summary>
+		/// Gets the parent Vessel.
+		/// </summary>
+		public new Vessel vessel
+		{
+			get
+			{
+				if (base.vessel != null)
+				{
+					return base.vessel;
+				}
+				else if (this.part != null && this.part.vessel != null)
+				{
+					return this.part.vessel;
+				}
+				else if (
+					this.part.protoPartSnapshot != null &&
+					this.part.protoPartSnapshot.pVesselRef != null &&
+					this.part.protoPartSnapshot.pVesselRef.vesselRef != null
+				)
+				{
+					return this.part.protoPartSnapshot.pVesselRef.vesselRef;
+				}
+				else
+				{
+					this.LogError("Vessel and/or part reference are null, returning null vessel.");
+					return null;
+				}
+			}
+		}
+
+		/// <summary>
+		/// Gets the target <see cref="AntennaRange.IAntennaRelay"/>relay.
+		/// </summary>
+		public IAntennaRelay targetRelay
+		{
+			get
+			{
+				if (this.relay == null)
+				{
+					return null;
+				}
+
+				return this.relay.targetRelay;
+			}
+		}
+
+		/// <summary>
+		/// Gets a value indicating whether this <see cref="AntennaRange.IAntennaRelay"/> Relay is communicating
+		/// directly with Kerbin.
+		/// </summary>
+		public bool KerbinDirect
+		{
+			get
+			{
+				if (this.relay != null)
+				{
+					return this.relay.KerbinDirect;
+				}
+
+				return false;
+			}
+		}
+
+		/// <summary>
+		/// Gets or sets the nominal link distance, in meters.
+		/// </summary>
+		public double NominalLinkDistance
+		{
+			get
+			{
+				if (this.relay != null)
+				{
+					return this.relay.NominalLinkDistance;
+				}
+
+				return 0d;
+			}
+		}
+
+		/// <summary>
+		/// Gets or sets the maximum link distance, in meters.
+		/// </summary>
+		public double MaximumLinkDistance
+		{
+			get
+			{
+				if (this.relay != null)
+				{
+					return this.relay.MaximumLinkDistance;
+				}
+
+				return 0d;
+			}
+		}
+
+		/// <summary>
+		/// Gets the distance to the nearest relay or Kerbin, whichever is closer.
+		/// </summary>
+		public double transmitDistance
+		{
+			get
+			{
+				if (this.relay == null)
+				{
+					return double.PositiveInfinity;
+				}
+
+				return this.relay.transmitDistance;
+			}
+		}
+
+		public ConnectionStatus LinkStatus
+		{
+			get
+			{
+				if (this.relay == null)
+				{
+					return ConnectionStatus.None;
+				}
+
+				return this.relay.LinkStatus;
+			}
+		}
+
+		/// <summary>
+		/// Gets the nominal transmit distance at which the Antenna behaves just as prescribed by Squad's config.
+		/// </summary>
+		public double nominalTransmitDistance
+		{
+			get
+			{
+				if (ARConfiguration.UseAdditiveRanges)
+				{
+					return this.nominalRange;
+				}
+				else
+				{
+					return this.simpleRange;
+				}
+			}
+		}
+
+		/// <summary>
+		/// The maximum distance at which this relay can operate.
+		/// </summary>
+		public double maxTransmitDistance
+		{
+			get;
+			protected set;
+		}
+
+		/// <summary>
+		/// The first CelestialBody blocking line of sight to a 
+		/// </summary>
+		public CelestialBody firstOccludingBody
+		{
+			get
+			{
+				return this.relay.firstOccludingBody;
+			}
+		}
+
+		/*
+		 * The next two functions overwrite the behavior of the stock functions and do not perform equivalently, except
+		 * in that they both return floats.  Here's some quick justification:
+		 * 
+		 * The stock implementation of GetTransmitterScore (which I cannot override) is:
+		 * 		Score = (1 + DataResourceCost) / DataRate
+		 * 
+		 * The stock DataRate and DataResourceCost are:
+		 * 		DataRate = packetSize / packetInterval
+		 * 		DataResourceCost = packetResourceCost / packetSize
+		 * 
+		 * So, the resulting score is essentially in terms of joules per byte per baud.  Rearranging that a bit, it
+		 * could also look like joule-seconds per byte per byte, or newton-meter-seconds per byte per byte.  Either way,
+		 * that metric is not a very reasonable one.
+		 * 
+		 * Two metrics that might make more sense are joules per byte or joules per byte per second.  The latter case
+		 * would look like:
+		 * 		DataRate = packetSize / packetInterval
+		 * 		DataResourceCost = packetResourceCost
+		 * 
+		 * The former case, which I've chosen to implement below, is:
+		 * 		DataRate = packetSize
+		 * 		DataResourceCost = packetResourceCost
+		 * 
+		 * So... hopefully that doesn't screw with anything else.
+		 * */
+		/// <summary>
+		/// Override ModuleDataTransmitter.DataRate to just return packetSize, because we want antennas to be scored in
+		/// terms of joules/byte
+		/// </summary>
+		public new float DataRate
+		{
+			get
+			{
+				this.PreTransmit_SetPacketSize();
+
+				if (this.CanTransmit())
+				{
+					return this.packetSize;
+				}
+				else
+				{
+					return float.Epsilon;
+				}
+			}
+		}
+
+		/// <summary>
+		/// Override ModuleDataTransmitter.DataResourceCost to just return packetResourceCost, because we want antennas
+		/// to be scored in terms of joules/byte
+		/// </summary>
+		public new double DataResourceCost
+		{
+			get
+			{
+				this.PreTransmit_SetPacketResourceCost();
+
+				if (this.CanTransmit())
+				{
+					return this.packetResourceCost;
+				}
+				else
+				{
+					return float.PositiveInfinity;
+				}
+			}
+		}
+
+		/// <summary>
+		/// Gets the Part title.
+		/// </summary>
+		public string Title
+		{
+			get
+			{
+				if (this.part != null && this.part.partInfo != null)
+				{
+					return this.part.partInfo.title;
+				}
+
+				return string.Empty;
+			}
+		}
+
+		/*
+		 * Methods
+		 * */
+		// Build ALL the objects.
+		public ModuleLimitedDataTransmitter () : base()
+		{
+			this.ErrorMsg = new ScreenMessage("", 4f, false, ScreenMessageStyle.UPPER_LEFT);
+			this.packetThrottle = 100f;
+		}
+
+		/// <summary>
+		/// PartModule OnAwake override; runs at Unity Awake.
+		/// </summary>
+		public override void OnAwake()
+		{
+			base.OnAwake();
+
+			this._basepacketSize = base.packetSize;
+			this._basepacketResourceCost = base.packetResourceCost;
+
+			Tools.PostDebugMessage(string.Format(
+				"{0} loaded:\n" +
+				"packetSize: {1}\n" +
+				"packetResourceCost: {2}\n" +
+				"nominalTransmitDistance: {3}\n" +
+				"maxPowerFactor: {4}\n" +
+				"maxDataFactor: {5}\n",
+				this.name,
+				base.packetSize,
+				this._basepacketResourceCost,
+				this.nominalTransmitDistance,
+				this.maxPowerFactor,
+				this.maxDataFactor
+			));
+		}
+
+		/// <summary>
+		/// PartModule OnStart override; runs at Unity Start.
+		/// </summary>
+		/// <param name="state">State.</param>
+		public override void OnStart (StartState state)
+		{
+			base.OnStart (state);
+
+			if (state >= StartState.PreLaunch)
+			{
+				this.maxTransmitDistance = Math.Sqrt(this.maxPowerFactor) * this.nominalTransmitDistance;
+
+				this.relay = new AntennaRelay(this);
+				this.relay.nominalTransmitDistance = this.nominalTransmitDistance;
+				this.relay.maxTransmitDistance = this.maxTransmitDistance;
+
+				this.UImaxTransmitDistance = string.Format(Tools.SIFormatter, "{0:S3}m", this.maxTransmitDistance);
+
+				GameEvents.onPartActionUICreate.Add(this.onPartActionUICreate);
+				GameEvents.onPartActionUIDismiss.Add(this.onPartActionUIDismiss);
+			}
+		}
+
+		/// <summary>
+		/// When the module loads, fetch the Squad KSPFields from the base.  This is necessary in part because
+		/// overloading packetSize and packetResourceCostinto a property in ModuleLimitedDataTransmitter didn't
+		/// work.
+		/// </summary>
+		/// <param name="node"><see cref="ConfigNode"/> with data for this module.</param>
+		public override void OnLoad(ConfigNode node)
+		{
+			this.Fields.Load(node);
+			base.Fields.Load(node);
+
+			base.OnLoad (node);
+
+			this.maxTransmitDistance = Math.Sqrt(this.maxPowerFactor) * this.nominalTransmitDistance;
+		}
+
+		/// <summary>
+		/// Override ModuleDataTransmitter.GetInfo to add nominal and maximum range to the VAB description.
+		/// </summary>
+		public override string GetInfo()
+		{
+			StringBuilder sb = Tools.GetStringBuilder();
+			string text;
+
+			sb.Append(base.GetInfo());
+			sb.AppendFormat(Tools.SIFormatter, "Nominal Range: {0:S3}m\n", this.nominalTransmitDistance);
+			sb.AppendFormat(Tools.SIFormatter, "Maximum Range: {0:S3}m\n", this.maxTransmitDistance);
+
+			text = sb.ToString();
+
+			Tools.PutStringBuilder(sb);
+
+			return text;
+		}
+
+		/// <summary>
+		/// Determines whether this instance can transmit.
+		/// <c>true</c> if this instance can transmit; otherwise, <c>false</c>.
+		/// </summary>
+		public new bool CanTransmit()
+		{
+			if (this.part == null || this.relay == null)
+			{
+				return false;
+			}
+
+			switch (this.part.State)
+			{
+				case PartStates.DEAD:
+				case PartStates.DEACTIVATED:
+					Tools.PostDebugMessage(string.Format(
+						"{0}: {1} on {2} cannot transmit: {3}",
+						this.GetType().Name,
+						this.part.partInfo.title,
+						this.vessel.vesselName,
+						Enum.GetName(typeof(PartStates), this.part.State)
+					));
+					return false;
+				default:
+					break;
+			}
+
+			return this.relay.CanTransmit();
+		}
+
+		/// <summary>
+		/// Finds the nearest relay.
+		/// </summary>
+		public void FindNearestRelay()
+		{
+			if (this.relay != null)
+			{
+				this.relay.FindNearestRelay();
+			}
+		}
+
+		/// <summary>
+		/// Override ModuleDataTransmitter.TransmitData to check against CanTransmit and fail out when CanTransmit
+		/// returns false.
+		/// </summary>
+		/// <param name="dataQueue">List of <see cref="ScienceData"/> to transmit.</param>
+		/// <param name="callback">Callback function</param>
+		public new void TransmitData(List<ScienceData> dataQueue, Callback callback)
+		{
+			this.LogDebug(
+				"TransmitData(List<ScienceData> dataQueue, Callback callback) called.  dataQueue.Count={0}",
+				dataQueue.Count
+			);
+
+			this.FindNearestRelay();
+
+			this.PreTransmit_SetPacketSize();
+			this.PreTransmit_SetPacketResourceCost();
+
+			if (this.CanTransmit())
+			{
+				ScreenMessages.PostScreenMessage(this.buildTransmitMessage(), 4f, ScreenMessageStyle.UPPER_LEFT);
+
+				this.LogDebug(
+					"CanTransmit in TransmitData, calling base.TransmitData with dataQueue=[{0}] and callback={1}",
+					dataQueue.SPrint(),
+					callback == null ? "null" : callback.ToString()
+				);
+
+				if (callback == null)
+				{
+					base.TransmitData(dataQueue);
+				}
+				else
+				{
+					base.TransmitData(dataQueue, callback);
+				}
+			}
+			else
+			{
+				Tools.PostDebugMessage(this, "{0} unable to transmit during TransmitData.", this.part.partInfo.title);
+
+				var logger = Tools.DebugLogger.New(this);
+
+				IList<ModuleScienceContainer> vesselContainers = this.vessel.getModulesOfType<ModuleScienceContainer>();
+				ModuleScienceContainer scienceContainer;
+				for (int cIdx = 0; cIdx < vesselContainers.Count; cIdx++)
+				{
+					scienceContainer = vesselContainers[cIdx];
+
+					logger.AppendFormat("Checking ModuleScienceContainer in {0}\n",
+						scienceContainer.part.partInfo.title);
+
+					if (
+						scienceContainer.capacity != 0 &&
+						scienceContainer.GetScienceCount() >= scienceContainer.capacity
+					)
+					{
+						logger.Append("\tInsufficient capacity, skipping.\n");
+						continue;
+					}
+
+					List<ScienceData> dataStored = new List<ScienceData>();
+
+					ScienceData data;
+					for (int dIdx = 0; dIdx < dataQueue.Count; dIdx++)
+					{
+						data = dataQueue[dIdx];
+						if (!scienceContainer.allowRepeatedSubjects && scienceContainer.HasData(data))
+						{
+							logger.Append("\tAlready contains subject and repeated subjects not allowed, skipping.\n");
+							continue;
+						}
+
+						logger.AppendFormat("\tAcceptable, adding data on subject {0}... ", data.subjectID);
+						if (scienceContainer.AddData(data))
+						{
+							logger.Append("done, removing from queue.\n");
+
+							dataStored.Add(data);
+						}
+						#if DEBUG
+						else
+						{
+							logger.Append("failed.\n");
+						}
+						#endif
+					}
+
+					dataQueue.RemoveAll(i => dataStored.Contains(i));
+
+					logger.AppendFormat("\t{0} data left in queue.", dataQueue.Count);
+				}
+
+				logger.Print();
+
+				if (dataQueue.Count > 0)
+				{
+					StringBuilder sb = Tools.GetStringBuilder();
+
+					sb.Append('[');
+					sb.Append(this.part.partInfo.title);
+					sb.AppendFormat("]: {0} data items could not be saved: no space available in data containers.\n");
+					sb.Append("Data to be discarded:\n");
+
+					ScienceData data;
+					for (int dIdx = 0; dIdx < dataQueue.Count; dIdx++)
+					{
+						data = dataQueue[dIdx];
+						sb.AppendFormat("\t{0}\n", data.title);
+					}
+
+					ScreenMessages.PostScreenMessage(sb.ToString(), 4f, ScreenMessageStyle.UPPER_LEFT);
+
+					Tools.PostDebugMessage(sb.ToString());
+
+					Tools.PutStringBuilder(sb);
+				}
+
+				this.PostCannotTransmitError();
+			}
+
+			Tools.PostDebugMessage (
+				"distance: " + this.transmitDistance
+				+ " packetSize: " + this.packetSize
+				+ " packetResourceCost: " + this.packetResourceCost
+			);
+		}
+
+		/// <summary>
+		/// Override ModuleDataTransmitter.TransmitData to check against CanTransmit and fail out when CanTransmit
+		/// returns false.
+		/// </summary>
+		/// <param name="dataQueue">List of <see cref="ScienceData"/> to transmit.</param>
+		public new void TransmitData(List<ScienceData> dataQueue)
+		{
+			this.LogDebug(
+				"TransmitData(List<ScienceData> dataQueue) called, dataQueue.Count={0}",
+				dataQueue.Count
+			);
+
+			this.TransmitData(dataQueue, null);
+		}
+
+		/// <summary>
+		/// Override ModuleDataTransmitter.StartTransmission to check against CanTransmit and fail out when CanTransmit
+		/// returns false.
+		/// </summary>
+		public new void StartTransmission()
+		{
+			this.FindNearestRelay();
+
+			PreTransmit_SetPacketSize ();
+			PreTransmit_SetPacketResourceCost ();
+
+			Tools.PostDebugMessage (
+				"distance: " + this.transmitDistance
+				+ " packetSize: " + this.packetSize
+				+ " packetResourceCost: " + this.packetResourceCost
+				);
+
+			if (this.CanTransmit())
+			{
+				ScreenMessages.PostScreenMessage(this.buildTransmitMessage(), 4f, ScreenMessageStyle.UPPER_LEFT);
+
+				base.StartTransmission();
+			}
+			else
+			{
+				this.PostCannotTransmitError ();
+			}
+		}
+
+		/// <summary>
+		/// MonoBehaviour Update
+		/// </summary>
+		public void Update()
+		{
+			if (this.actionUIUpdate)
+			{
+				this.UImaxTransmitDistance = string.Format(Tools.SIFormatter, "{0:S3}m", this.MaximumLinkDistance);
+				this.UInominalLinkDistance = string.Format(Tools.SIFormatter, "{0:S3}m", this.NominalLinkDistance);
+				
+				if (this.CanTransmit())
+				{
+					this.UIrelayStatus = this.LinkStatus.ToString();
+					this.UItransmitDistance = Tools.MuMech_ToSI(this.transmitDistance) + "m";
+					this.UIpacketSize = Tools.MuMech_ToSI(this.DataRate) + "MiT";
+					this.UIpacketCost = Tools.MuMech_ToSI(this.DataResourceCost) + "E";
+				}
+				else
+				{
+					if (this.relay.firstOccludingBody == null)
+					{
+						this.UItransmitDistance = Tools.MuMech_ToSI(this.transmitDistance) + "m";
+						this.UIrelayStatus = "Out of range";
+					}
+					else
+					{
+						this.UItransmitDistance = "N/A";
+						this.UIrelayStatus = string.Format("Blocked by {0}", this.relay.firstOccludingBody.bodyName);
+					}
+					this.UIpacketSize = "N/A";
+					this.UIpacketCost = "N/A";
+				}
+
+				if (this.KerbinDirect)
+				{
+					this.UIrelayTarget = AntennaRelay.Kerbin.bodyName;
+				}
+				else
+				{
+					this.UIrelayTarget = this.targetRelay.ToString();
+				}
+			}
+		}
+
+		/// <summary>
+		/// Returns a <see cref="System.String"/> that represents the current <see cref="AntennaRange.ModuleLimitedDataTransmitter"/>.
+		/// </summary>
+		/// <returns>A <see cref="System.String"/> that represents the current <see cref="AntennaRange.ModuleLimitedDataTransmitter"/>.</returns>
+		public override string ToString()
+		{
+			StringBuilder sb = Tools.GetStringBuilder();
+			string msg;
+
+			sb.Append(this.part.partInfo.title);
+
+			if (vessel != null)
+			{
+				sb.Append(" on ");
+				sb.Append(vessel.vesselName);
+			}
+			else if (
+				this.part != null &&
+				this.part.protoPartSnapshot != null &&
+				this.part.protoPartSnapshot != null &&
+				this.part.protoPartSnapshot.pVesselRef != null
+			)
+			{
+				sb.Append(" on ");
+				sb.Append(this.part.protoPartSnapshot.pVesselRef.vesselName);
+			}
+
+			msg = sb.ToString();
+
+			Tools.PutStringBuilder(sb);
+
+			return msg;
+		}
+
+		// When we catch an onPartActionUICreate event for our part, go ahead and update every frame to look pretty.
+		private void onPartActionUICreate(Part eventPart)
+		{
+			if (eventPart == base.part)
+			{
+				this.actionUIUpdate = true;
+			}
+		}
+
+		// When we catch an onPartActionUIDismiss event for our part, stop updating every frame to look pretty.
+		private void onPartActionUIDismiss(Part eventPart)
+		{
+			if (eventPart == base.part)
+			{
+				this.actionUIUpdate = false;
+			}
+		}
+
+		// Post an error in the communication messages describing the reason transmission has failed.  Currently there
+		// is only one reason for this.
+		private void PostCannotTransmitError()
+		{
+			string ErrorText = string.Intern("Unable to transmit: no visible receivers in range!");
+
+			this.ErrorMsg.message = string.Format(
+				"<color='#{0}{1}{2}{3}'><b>{4}</b></color>",
+				((int)(XKCDColors.OrangeRed.r * 255f)).ToString("x2"),
+				((int)(XKCDColors.OrangeRed.g * 255f)).ToString("x2"),
+				((int)(XKCDColors.OrangeRed.b * 255f)).ToString("x2"),
+				((int)(XKCDColors.OrangeRed.a * 255f)).ToString("x2"),
+				ErrorText
+			);
+
+			Tools.PostDebugMessage(this.GetType().Name + ": " + this.ErrorMsg.message);
+
+			ScreenMessages.PostScreenMessage(this.ErrorMsg, false);
+		}
+
+		// Before transmission, set packetResourceCost.  Per above, packet cost increases with the square of
+		// distance.  packetResourceCost maxes out at _basepacketResourceCost * maxPowerFactor, at which point
+		// transmission fails (see CanTransmit).
+		private void PreTransmit_SetPacketResourceCost()
+		{
+			if (ARConfiguration.FixedPowerCost || this.transmitDistance <= this.NominalLinkDistance)
+			{
+				base.packetResourceCost = this._basepacketResourceCost;
+			}
+			else
+			{
+				float rangeFactor = (float)(this.transmitDistance / this.NominalLinkDistance);
+				rangeFactor *= rangeFactor;
+
+				base.packetResourceCost = this._basepacketResourceCost
+					* rangeFactor;
+			}
+
+			base.packetResourceCost *= this.packetThrottle / 100f;
+		}
+
+		// Before transmission, set packetSize.  Per above, packet size increases with the inverse square of
+		// distance.  packetSize maxes out at _basepacketSize * maxDataFactor.
+		private void PreTransmit_SetPacketSize()
+		{
+			if (!ARConfiguration.FixedPowerCost && this.transmitDistance >= this.NominalLinkDistance)
+			{
+				base.packetSize = this._basepacketSize;
+			}
+			else
+			{
+				float rangeFactor = (float)(this.NominalLinkDistance / this.transmitDistance);
+				rangeFactor *= rangeFactor;
+
+				base.packetSize = Mathf.Min(
+					this._basepacketSize * rangeFactor,
+					this._basepacketSize * this.maxDataFactor);
+			}
+
+			base.packetSize *= this.packetThrottle / 100f;
+		}
+
+		private string buildTransmitMessage()
+		{
+			StringBuilder sb = Tools.GetStringBuilder();
+			string msg;
+
+			sb.Append("[");
+			sb.Append(base.part.partInfo.title);
+			sb.Append("]: ");
+
+			sb.Append("Beginning transmission ");
+
+			if (this.KerbinDirect)
+			{
+				sb.Append("directly to Kerbin.");
+			}
+			else
+			{
+				sb.Append("via ");
+				sb.Append(this.relay.targetRelay);
+			}
+
+			msg = sb.ToString();
+
+			Tools.PutStringBuilder(sb);
+
+			return msg;
+		}
+
+		#if DEBUG
+		// When debugging, it's nice to have a button that just tells you everything.
+		[KSPEvent (guiName = "Show Debug Info", active = true, guiActive = true)]
+		public void DebugInfo()
+		{
+			PreTransmit_SetPacketSize ();
+			PreTransmit_SetPacketResourceCost ();
+
+			DebugPartModule.DumpClassObject(this);
+		}
+
+		[KSPEvent (guiName = "Dump Vessels", active = true, guiActive = true)]
+		public void PrintAllVessels()
+		{
+			StringBuilder sb = Tools.GetStringBuilder();
+			
+			sb.Append("Dumping FlightGlobals.Vessels:");
+
+			Vessel vessel;
+			for (int i = 0; i < FlightGlobals.Vessels.Count; i++)
+			{
+				vessel = FlightGlobals.Vessels[i];
+				sb.AppendFormat("\n'{0} ({1})'", vessel.vesselName, vessel.id);
+			}
+		    
+			Tools.PostDebugMessage(sb.ToString());
+
+			Tools.PutStringBuilder(sb);
+		}
+		 
+		[KSPEvent (guiName = "Dump RelayDB", active = true, guiActive = true)]
+		public void DumpRelayDB()
+		{
+			RelayDatabase.Instance.Dump();
+		}
+		#endif
+	}
+}

--- /dev/null
+++ b/Properties/AssemblyInfo.cs
@@ -1,1 +1,47 @@
+// AntennaRange
+//
+// AssemblyInfo.cs
+//
+// Copyright © 2014-2015, 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 System.Reflection;
+using System.Runtime.CompilerServices;
+
+[assembly: KSPAssemblyDependency("ToadicusTools", 0, 0)]
+
+// Information about this assembly is defined by the following attributes.
+// Change them to the values specific to your project.
+[assembly: AssemblyTitle("AntennaRange")]
+[assembly: AssemblyDescription("Enforce and Encourage Antenna Diversity")]
+[assembly: AssemblyCopyright("toadicus")]
+// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
+// The form "{Major}.{Minor}.*" will automatically update the build and revision,
+// and "{Major}.{Minor}.{Build}.*" will update just the revision.
+[assembly: AssemblyVersion("1.9.*")]
+// The following attributes are used to specify the signing key for the assembly,
+// if desired. See the Mono documentation for more information about signing.
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("")]
+

--- /dev/null
+++ b/Properties/ChangeLog
@@ -1,1 +1,5 @@
+2014-01-14  toadicus  <>
 
+	* AssemblyInfo.cs: New AssemblyInfo file for reason.
+
+

--- a/ProtoAntennaRelay.cs
+++ b/ProtoAntennaRelay.cs
@@ -1,63 +1,168 @@
+// AntennaRange
+//
+// ProtoAntennaRelay.cs
+//
+// Copyright © 2014-2015, 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 ToadicusTools;
 
 namespace AntennaRange
 {
-	/*
-	 * Wrapper class for ProtoPartModuleSnapshot extending AntennaRelay and implementing IAntennaRelay.
-	 * This is used for finding relays in unloaded Vessels.
-	 * */
+	/// <summary>
+	/// Wrapper class for ProtoPartModuleSnapshot extending AntennaRelay and implementing IAntennaRelay.
+	/// This is used for finding relays in unloaded Vessels.
+	/// </summary>
 	public class ProtoAntennaRelay : AntennaRelay, IAntennaRelay
 	{
-		protected ProtoPartModuleSnapshot snapshot;
+		// Stores the prototype part so we can make sure we haven't exploded or so.
+		private ProtoPartSnapshot protoPart;
 
 		/// <summary>
-		/// The maximum distance at which this transmitter can operate.
+		/// Gets the parent Vessel.
 		/// </summary>
-		/// <value>The max transmit distance.</value>
-		public override float maxTransmitDistance
+		public override Vessel vessel
 		{
 			get
 			{
-				double result;
-				Double.TryParse(snapshot.moduleValues.GetValue ("ARmaxTransmitDistance") ?? "0", out result);
-				return (float)result;
-			}
-		}
-
-		/// <summary>
-		/// Gets a value indicating whether this <see cref="AntennaRange.ProtoDataTransmitter"/> has been checked during
-		/// the current relay attempt.
-		/// </summary>
-		/// <value><c>true</c> if relay checked; otherwise, <c>false</c>.</value>
-		public override bool relayChecked
-		{
-			get
-			{
-				bool result;
-				Boolean.TryParse(this.snapshot.moduleValues.GetValue("relayChecked"), out result);
-				return result;
-			}
-			protected set
-			{
-				if (this.snapshot.moduleValues.HasValue("relayChecked"))
+				if (
+					this.protoPart != null &&
+					this.protoPart.pVesselRef != null &&
+					this.protoPart.pVesselRef.vesselRef != null
+				)
 				{
-					this.snapshot.moduleValues.SetValue("relayChecked", value.ToString ());
+					return this.protoPart.pVesselRef.vesselRef;
 				}
 				else
 				{
-					this.snapshot.moduleValues.AddValue("relayChecked", value);
+					Tools.PostErrorMessage("{0}: Could not fetch vessel!  {1}{2}{3}",
+						this.ToString(),
+						this.protoPart == null ? "\n\tprotoPart=null" : string.Empty,
+						this.protoPart != null && this.protoPart.pVesselRef == null ?
+							"\n\tthis.protoPart.pVesselRef=null" : string.Empty,
+						this.protoPart != null && this.protoPart.pVesselRef != null &&
+							this.protoPart.pVesselRef.vesselRef == null ?
+							"\n\tthis.protoPart.pVesselRef.vesselRef=null" : string.Empty
+					);
+					return null;
 				}
 			}
 		}
 
 		/// <summary>
-		/// Initializes a new instance of the <see cref="AntennaRange.ProtoAntennaRelay"/> class.
+		/// Gets the nominal transmit distance at which the Antenna behaves just as prescribed by Squad's config.
 		/// </summary>
-		/// <param name="ms">The ProtoPartModuleSnapshot to wrap</param>
-		/// <param name="vessel">The parent Vessel</param>
-		public ProtoAntennaRelay(ProtoPartModuleSnapshot ms, Vessel vessel) : base(vessel)
+		public override double nominalTransmitDistance
 		{
-			this.snapshot = ms;
+			get
+			{
+				return this.moduleRef.nominalTransmitDistance;
+			}
+		}
+
+		/// <summary>
+		/// The maximum distance at which this relay can operate.
+		/// </summary>
+		public override double maxTransmitDistance
+		{
+			get
+			{
+				return moduleRef.maxTransmitDistance;
+			}
+		}
+
+		/// <summary>
+		/// Gets the underlying part's title.
+		/// </summary>
+		/// <value>The title.</value>
+		public string Title
+		{
+			get
+			{
+				if (this.protoPart != null && this.protoPart.partInfo != null)
+				{
+					return this.protoPart.partInfo.title;
+				}
+
+				return string.Empty;
+			}
+		}
+
+		/// <summary>
+		/// Determines whether this instance can transmit.
+		/// <c>true</c> if this instance can transmit; otherwise, <c>false</c>.
+		/// </summary>
+		public override bool CanTransmit()
+		{
+			PartStates partState = (PartStates)this.protoPart.state;
+			if (partState == PartStates.DEAD || partState == PartStates.DEACTIVATED)
+			{
+				Tools.PostDebugMessage(string.Format(
+					"{0}: {1} on {2} cannot transmit: {3}",
+					this.GetType().Name,
+					this.Title,
+					this.vessel.vesselName,
+					Enum.GetName(typeof(PartStates), partState)
+				));
+				return false;
+			}
+			return base.CanTransmit();
+		}
+
+		/// <summary>
+		/// Returns a <see cref="System.String"/> that represents the current <see cref="AntennaRange.ProtoAntennaRelay"/>.
+		/// </summary>
+		/// <returns>A <see cref="System.String"/> that represents the current <see cref="AntennaRange.ProtoAntennaRelay"/>.</returns>
+		public override string ToString()
+		{
+			System.Text.StringBuilder sb = Tools.GetStringBuilder();
+
+			sb.Append(this.Title);
+
+			if (this.protoPart != null && this.protoPart.pVesselRef != null)
+			{
+				sb.AppendFormat(" on {0}", this.protoPart.pVesselRef.vesselName);
+			}
+
+			Tools.PutStringBuilder(sb);
+
+			return sb.ToString();
+		}
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="AntennaRange.AntennaRelay"/> class.
+		/// </summary>
+		/// <param name="prefabRelay">The module reference underlying this AntennaRelay,
+		/// as an <see cref="AntennaRange.IAntennaRelay"/></param>
+		/// <param name="pps">The prototype partreference on which the module resides.</param>
+		public ProtoAntennaRelay(IAntennaRelay prefabRelay, ProtoPartSnapshot pps) : base(prefabRelay)
+		{
+			this.protoPart = pps;
+
+			Tools.PostLogMessage("{0}: constructed {1}", this.GetType().Name, this.ToString());
 		}
 	}
 }

file:b/RelayDatabase.cs (new)
--- /dev/null
+++ b/RelayDatabase.cs
@@ -1,1 +1,480 @@
-
+// AntennaRange
+//
+// RelayDatabase.cs
+//
+// Copyright © 2014-2015, 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.
+
+#pragma warning disable 1591
+
+using KSP;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using ToadicusTools;
+using UnityEngine;
+
+namespace AntennaRange
+{
+	public class RelayDatabase : Singleton<RelayDatabase>
+	{
+		/*
+		 * Instance members
+		 * */
+
+		/*
+		 * Fields
+		 * */
+		// Vessel.id-keyed hash table of Part.GetHashCode()-keyed tables of relay objects.
+		private Dictionary<Guid, List<IAntennaRelay>> relayDatabase;
+		private Dictionary<Guid, IAntennaRelay> bestRelayTable;
+
+		// Vessel.id-keyed hash table of part counts, used for caching
+		private Dictionary<Guid, int> vesselPartCountTable;
+
+		private int cacheHits;
+		private int cacheMisses;
+
+		/*
+		 * Properties
+		 * */
+		// Gets the Part-hashed table of relays in a given vessel
+		public IList<IAntennaRelay> this [Vessel vessel]
+		{
+			get
+			{
+				// If we don't have an entry for this vessel...
+				if (!this.ContainsKey(vessel.id))
+				{
+					// ...Generate an entry for this vessel.
+					this.AddVessel(vessel);
+					this.cacheMisses++;
+				}
+				// If our part count disagrees with the vessel's part count...
+				else if (this.vesselPartCountTable[vessel.id] != vessel.Parts.Count)
+				{
+					// ...Update the our vessel in the cache
+					this.UpdateVessel(vessel);
+					this.cacheMisses++;
+				}
+				// Otherwise, it's a hit
+				else
+				{
+					this.cacheHits++;
+				}
+
+				// Return the Part-hashed table of relays for this vessel
+				return relayDatabase[vessel.id].AsReadOnly();
+			}
+		}
+
+		/* 
+		 * Methods
+		 * */
+		// Remove a vessel from the cache, if it exists.
+		public void DirtyVessel(Vessel vessel)
+		{
+			#if DEBUG
+			Tools.PostDebugMessage("RelayDatabase: Dirtying cache for vessel {0} in frame {1}",
+				vessel, new System.Diagnostics.StackTrace().ToString());
+			#else
+			Tools.PostLogMessage("RelayDatabase: Dirtying cache for vessel {0}", vessel.vesselName);
+			#endif
+
+			this.relayDatabase.Remove(vessel.id);
+			this.vesselPartCountTable.Remove(vessel.id);
+			this.bestRelayTable.Remove(vessel.id);
+		}
+
+		public void ClearCache()
+		{
+			Tools.PostLogMessage("RelayDatabase: onSceneChange clearing entire cache.");
+
+			this.relayDatabase.Clear();
+			this.bestRelayTable.Clear();
+			this.vesselPartCountTable.Clear();
+		}
+
+		// Returns true if both the relayDatabase and the vesselPartCountDB contain the vessel id.
+		public bool ContainsKey(Guid key)
+		{
+			return this.relayDatabase.ContainsKey(key);
+		}
+
+		// Returns true if both the relayDatabase and the vesselPartCountDB contain the vessel.
+		public bool ContainsKey(Vessel vessel)
+		{
+			return this.ContainsKey(vessel.id);
+		}
+
+		public IAntennaRelay GetBestVesselRelay(Vessel vessel)
+		{
+			IAntennaRelay relay;
+			if (this.bestRelayTable.TryGetValue(vessel.id, out relay))
+			{
+				return relay;
+			}
+			else
+			{
+				var dump = this[vessel];
+				return null;
+			}
+		}
+
+		// Adds a vessel to the database
+		// The return for this function isn't used yet, but seems useful for potential future API-uses
+		private bool AddVessel(Vessel vessel)
+		{
+			// If this vessel is already here...
+			if (this.ContainsKey(vessel))
+			{
+				// ...post an error
+				Debug.LogWarning(string.Format(
+					"{0}: Cannot add vessel '{1}' (id: {2}): Already in database.",
+					this.GetType().Name,
+					vessel.vesselName,
+					vessel.id
+				));
+
+				// ...and refuse to add
+				return false;
+			}
+			// otherwise, add the vessel to our tables...
+			else
+			{
+				// Build an empty table...
+				this.relayDatabase[vessel.id] = new List<IAntennaRelay>();
+
+				// Update the empty index
+				this.UpdateVessel(vessel);
+
+				// Return success
+				return true;
+			}
+		}
+
+		// Update the vessel's entry in the table
+		private void UpdateVessel(Vessel vessel)
+		{
+			// Squak if the database doesn't have the vessel
+			if (!this.ContainsKey(vessel))
+			{
+				throw new InvalidOperationException(string.Format(
+					"{0}: Update called for vessel '{1}' (id: {2}) not in database: vessel will be added.",
+					this.GetType().Name,
+					vessel.vesselName,
+					vessel.id
+				));
+			}
+
+			List<IAntennaRelay> vesselTable = this.relayDatabase[vessel.id];
+
+			// Actually build and assign the table
+			this.getVesselRelays(vessel, ref vesselTable);
+			// Set the part count
+			this.vesselPartCountTable[vessel.id] = vessel.Parts.Count;
+		}
+
+		// Runs when a vessel is modified (or when we switch to one, to catch docking events)
+		public void onVesselEvent(Vessel vessel)
+		{
+			// If we have this vessel in our cache...
+			if (this.ContainsKey(vessel))
+			{
+				// If our part counts disagree (such as if a part has been added or broken off,
+				// or if we've just docked or undocked)...
+				if (this.vesselPartCountTable[vessel.id] != vessel.Parts.Count || vessel.loaded)
+				{
+					Tools.PostDebugMessage(string.Format(
+						"{0}: dirtying cache for vessel '{1}' ({2}).",
+						this.GetType().Name,
+						vessel.vesselName,
+						vessel.id
+					));
+
+					// Dirty the cache (real vessels will never have negative part counts)
+					this.DirtyVessel(vessel);
+				}
+			}
+		}
+
+		// Runs when the player requests a scene change, such as when changing vessels or leaving flight.
+		private void onSceneChange(GameScenes scene)
+		{
+			Tools.PostDebugMessage(
+				"RelayDatabase: caught onSceneChangeRequested in scene {0} to scene {1}.  ActiveVessel is {2}",
+				HighLogic.LoadedScene,
+				scene,
+				FlightGlobals.ActiveVessel == null ? "null" : FlightGlobals.ActiveVessel.vesselName
+			);
+
+			if (scene == GameScenes.FLIGHT)
+			{
+				if (scene == HighLogic.LoadedScene)
+				{
+					if (FlightGlobals.ActiveVessel != null)
+					{
+						Tools.PostDebugMessage("RelayDatabase: onSceneChange clearing {0} from cache.",
+							FlightGlobals.ActiveVessel.vesselName);
+
+						this.onVesselEvent(FlightGlobals.ActiveVessel);
+					}
+				}
+				else
+				{
+					this.ClearCache();
+				}
+			}
+		}
+
+		private void onGameLoaded(object data)
+		{
+			this.ClearCache();
+		}
+
+		// Runs when parts are undocked
+		private void onPartEvent(Part part)
+		{
+			if (part != null && part.vessel != null)
+			{
+				this.onVesselEvent(part.vessel);
+			}
+		}
+
+		// Runs when parts are coupled, as in docking
+		private void onFromPartToPartEvent(GameEvents.FromToAction<Part, Part> data)
+		{
+			this.onPartEvent(data.from);
+			this.onPartEvent(data.to);
+		}
+
+		// Produce a Part-hashed table of relays for the given vessel
+		private void getVesselRelays(Vessel vessel, ref List<IAntennaRelay> relays)
+		{
+			// We're going to completely regen this table, so dump the current contents.
+			relays.Clear();
+
+			Tools.PostDebugMessage(string.Format(
+				"{0}: Getting antenna relays from vessel {1}.",
+				"IAntennaRelay",
+				vessel.vesselName
+			));
+
+			double bestRelayRange = double.NegativeInfinity;
+			IAntennaRelay bestRelay = null;
+			IAntennaRelay relay;
+
+			// If the vessel is loaded, we can fetch modules implementing IAntennaRelay directly.
+			if (vessel.loaded) {
+				Tools.PostDebugMessage(string.Format(
+					"{0}: vessel {1} is loaded, searching for modules in loaded parts.",
+					"IAntennaRelay",
+					vessel.vesselName
+				));
+
+				// Loop through the Parts in the Vessel...
+				Part part;
+				for (int partIdx = 0; partIdx < vessel.Parts.Count; partIdx++)
+				{
+					part = vessel.Parts[partIdx];
+
+					// ...loop through the PartModules in the Part...
+					PartModule module;
+					for (int modIdx = 0; modIdx < part.Modules.Count; modIdx++)
+					{
+						module = part.Modules[modIdx];
+
+						// ...if the module is a relay...
+						if (module is IAntennaRelay)
+						{
+							relay = (module as IAntennaRelay);
+
+							if (relay.maxTransmitDistance > bestRelayRange)
+							{
+								bestRelayRange = relay.maxTransmitDistance;
+								bestRelay = relay;
+							}
+
+							// ...add the module to the table
+							relays.Add(relay);
+							// ...neglect relay objects after the first in each part.
+							break;
+						}
+					}
+				}
+			}
+			// If the vessel is not loaded, we need to build ProtoAntennaRelays when we find relay ProtoPartSnapshots.
+			else
+			{
+				Tools.PostDebugMessage(string.Format(
+					"{0}: vessel {1} is not loaded, searching for modules in prototype parts.",
+					this.GetType().Name,
+					vessel.vesselName
+				));
+
+				// Loop through the ProtoPartModuleSnapshots in the Vessel...
+				ProtoPartSnapshot pps;
+				for (int ppsIdx = 0; ppsIdx < vessel.protoVessel.protoPartSnapshots.Count; ppsIdx++)
+				{
+					pps = vessel.protoVessel.protoPartSnapshots[ppsIdx];
+
+					Tools.PostDebugMessage(string.Format(
+						"{0}: Searching in protopartsnapshot {1}",
+						this.GetType().Name,
+						pps
+					));
+
+					// ...Fetch the prefab, because it's more useful for what we're doing.
+					Part partPrefab = PartLoader.getPartInfoByName(pps.partName).partPrefab;
+
+					Tools.PostDebugMessage(string.Format(
+						"{0}: Got partPrefab {1} in protopartsnapshot {2}",
+						this.GetType().Name,
+						partPrefab,
+						pps
+					));
+
+					// ...loop through the PartModules in the prefab...
+					PartModule module;
+					for (int modIdx = 0; modIdx < partPrefab.Modules.Count; modIdx++)
+					{
+						module = partPrefab.Modules[modIdx];
+
+						Tools.PostDebugMessage(string.Format(
+							"{0}: Searching in partmodule {1}",
+							this.GetType().Name,
+							module
+						));
+
+						// ...if the module is a relay...
+						if (module is IAntennaRelay)
+						{
+							Tools.PostDebugMessage(string.Format(
+								"{0}: partmodule {1} is antennarelay",
+								this.GetType().Name,
+								module
+							));
+
+							relay = new ProtoAntennaRelay(module as IAntennaRelay, pps);
+
+							if (relay.maxTransmitDistance > bestRelayRange)
+							{
+								bestRelayRange = relay.maxTransmitDistance;
+								bestRelay = relay;
+							}
+
+							// ...build a new ProtoAntennaRelay and add it to the table
+							relays.Add(relay);
+							// ...neglect relay objects after the first in each part.
+							break;
+						}
+					}
+				}
+			}
+
+			this.bestRelayTable[vessel.id] = bestRelay;
+
+			Tools.PostDebugMessage(string.Format(
+				"{0}: vessel '{1}' ({2}) has {3} transmitters.",
+				"IAntennaRelay",
+				vessel.vesselName,
+				vessel.id,
+				relays.Count
+			));
+		}
+
+		// Construct the singleton
+		private RelayDatabase()
+		{
+			// Initialize the databases
+			this.relayDatabase = new Dictionary<Guid, List<IAntennaRelay>>();
+			this.bestRelayTable = new Dictionary<Guid, IAntennaRelay>();
+			this.vesselPartCountTable = new Dictionary<Guid, int>();
+
+			this.cacheHits = 0;
+			this.cacheMisses = 0;
+
+			// Subscribe to some events
+			GameEvents.onVesselWasModified.Add(this.onVesselEvent);
+			GameEvents.onVesselChange.Add(this.onVesselEvent);
+			GameEvents.onVesselDestroy.Add(this.onVesselEvent);
+			GameEvents.onGameSceneLoadRequested.Add(this.onSceneChange);
+			GameEvents.onPartCouple.Add(this.onFromPartToPartEvent);
+			GameEvents.onPartUndock.Add(this.onPartEvent);
+			GameEvents.onGameStateLoad.Add(this.onGameLoaded);
+		}
+
+		~RelayDatabase()
+		{
+			// Unsubscribe from the events
+			GameEvents.onVesselWasModified.Remove(this.onVesselEvent);
+			GameEvents.onVesselChange.Remove(this.onVesselEvent);
+			GameEvents.onVesselDestroy.Remove(this.onVesselEvent);
+			GameEvents.onGameSceneLoadRequested.Remove(this.onSceneChange);
+			GameEvents.onPartCouple.Remove(this.onFromPartToPartEvent);
+			GameEvents.onPartUndock.Remove(this.onPartEvent);
+			GameEvents.onGameStateLoad.Remove(this.onGameLoaded);
+
+			Tools.PostDebugMessage(this.GetType().Name + " destroyed.");
+
+			KSPLog.print(string.Format(
+				"{0} destructed.  Cache hits: {1}, misses: {2}, hit rate: {3:P1}",
+				this.GetType().Name,
+				this.cacheHits,
+				this.cacheMisses,
+				(float)this.cacheHits / (float)(this.cacheMisses + this.cacheHits)
+			));
+		}
+
+		#if DEBUG
+		public void Dump()
+		{
+			StringBuilder sb = Tools.GetStringBuilder();
+
+			sb.Append("Dumping RelayDatabase:");
+
+			var dbEnum = this.relayDatabase.GetEnumerator();
+			IList<IAntennaRelay> vesselRelays;
+			while (dbEnum.MoveNext())
+			{
+				sb.AppendFormat("\nVessel {0}:", dbEnum.Current.Key);
+
+				vesselRelays = dbEnum.Current.Value;
+				IAntennaRelay relay;
+				for (int rIdx = 0; rIdx < vesselRelays.Count; rIdx++)
+				{
+					relay = vesselRelays[rIdx];
+					sb.AppendFormat("\n\t{0}", relay.ToString());
+				}
+			}
+
+			Tools.PostDebugMessage(sb.ToString());
+
+			Tools.PutStringBuilder(sb);
+		}
+		#endif
+	}
+}
+
+

--- /dev/null
+++ b/RelayExtensions.cs
@@ -1,1 +1,230 @@
-
+// AntennaRange
+//
+// Extensions.cs
+//
+// Copyright © 2014-2015, 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 System;
+using System.Collections.Generic;
+using ToadicusTools;
+
+namespace AntennaRange
+{
+	/// <summary>
+	/// A class of utility extensions for Vessels and Relays to help find a relay path back to Kerbin.
+	/// </summary>
+	public static class RelayExtensions
+	{
+		/// <summary>
+		/// Returns the distance between two IAntennaRelays.
+		/// </summary>
+		/// <param name="relayOne">Relay one.</param>
+		/// <param name="relayTwo">Relay two.</param>
+		public static double DistanceTo(this IAntennaRelay relayOne, IAntennaRelay relayTwo)
+		{
+			return relayOne.vessel.DistanceTo(relayTwo.vessel);
+		}
+
+		/// <summary>
+		/// Returns the distance from this IAntennaRelay to the given CelestialBody
+		/// </summary>
+		/// <param name="relay">Relay.</param>
+		/// <param name="body">Body.</param>
+		public static double SqrDistanceTo(this IAntennaRelay relay, CelestialBody body)
+		{
+			double range = relay.vessel.DistanceTo(body) - body.Radius;
+
+			return range * range;
+		}
+
+		/// <summary>
+		/// Returns the distance between two IAntennaRelays.
+		/// </summary>
+		/// <param name="relayOne">Relay one.</param>
+		/// <param name="relayTwo">Relay two.</param>
+		public static double SqrDistanceTo(this IAntennaRelay relayOne, IAntennaRelay relayTwo)
+		{
+			return relayOne.vessel.sqrDistanceTo(relayTwo.vessel);
+		}
+
+		/// <summary>
+		/// Returns the distance from this IAntennaRelay to the given CelestialBody
+		/// </summary>
+		/// <param name="relay">Relay.</param>
+		/// <param name="body">Body.</param>
+		public static double DistanceTo(this IAntennaRelay relay, CelestialBody body)
+		{
+			double range = relay.vessel.DistanceTo(body) - body.Radius;
+
+			return range;
+		}
+
+		/// <summary>
+		/// Returns the distance between this IAntennaRelay and a Vessel
+		/// </summary>
+		/// <param name="relay">This <see cref="IAntennaRelay"/></param>
+		/// <param name="Vessel">A <see cref="Vessel"/></param>
+		public static double DistanceTo(this AntennaRelay relay, Vessel Vessel)
+		{
+			return relay.vessel.DistanceTo(Vessel);
+		}
+
+		/// <summary>
+		/// Returns the distance between this IAntennaRelay and a CelestialBody
+		/// </summary>
+		/// <param name="relay">This <see cref="IAntennaRelay"/></param>
+		/// <param name="body">A <see cref="CelestialBody"/></param>
+		public static double DistanceTo(this AntennaRelay relay, CelestialBody body)
+		{
+			return relay.vessel.DistanceTo(body) - body.Radius;
+		}
+
+		/// <summary>
+		/// Returns the distance between this IAntennaRelay and another IAntennaRelay
+		/// </summary>
+		/// <param name="relayOne">This <see cref="IAntennaRelay"/></param>
+		/// <param name="relayTwo">Another <see cref="IAntennaRelay"/></param>
+		public static double DistanceTo(this AntennaRelay relayOne, IAntennaRelay relayTwo)
+		{
+			return relayOne.DistanceTo(relayTwo.vessel);
+		}
+
+		/// <summary>
+		/// Returns the square of the distance between this IAntennaRelay and a Vessel
+		/// </summary>
+		/// <param name="relay">This <see cref="IAntennaRelay"/></param>
+		/// <param name="vessel">A <see cref="Vessel"/></param>
+		public static double sqrDistanceTo(this AntennaRelay relay, Vessel vessel)
+		{
+			return relay.vessel.sqrDistanceTo(vessel);
+		}
+
+		/// <summary>
+		/// Returns the square of the distance between this IAntennaRelay and a CelestialBody
+		/// </summary>
+		/// <param name="relay">This <see cref="IAntennaRelay"/></param>
+		/// <param name="body">A <see cref="CelestialBody"/></param>
+		public static double sqrDistanceTo(this AntennaRelay relay, CelestialBody body)
+		{
+			return relay.vessel.sqrDistanceTo(body);
+		}
+
+		/// <summary>
+		/// Returns the square of the distance between this IAntennaRelay and another IAntennaRelay
+		/// </summary>
+		/// <param name="relayOne">This <see cref="IAntennaRelay"/></param>
+		/// <param name="relayTwo">Another <see cref="IAntennaRelay"/></param>
+		public static double sqrDistanceTo(this AntennaRelay relayOne, IAntennaRelay relayTwo)
+		{
+			return relayOne.vessel.sqrDistanceTo(relayTwo.vessel);
+		}
+
+		/// <summary>
+		/// Returns all of the PartModules or ProtoPartModuleSnapshots implementing IAntennaRelay in this Vessel.
+		/// </summary>
+		/// <param name="vessel">This <see cref="Vessel"/></param>
+		public static IList<IAntennaRelay> GetAntennaRelays (this Vessel vessel)
+		{
+			return RelayDatabase.Instance[vessel];
+		}
+
+		/// <summary>
+		/// Determines if the specified vessel has a connected relay.
+		/// </summary>
+		/// <returns><c>true</c> if the specified vessel has a connected relay; otherwise, <c>false</c>.</returns>
+		/// <param name="vessel"></param>
+		public static bool HasConnectedRelay(this Vessel vessel)
+		{
+			IList<IAntennaRelay> vesselRelays = RelayDatabase.Instance[vessel];
+			IAntennaRelay relay;
+			for (int rIdx = 0; rIdx < vesselRelays.Count; rIdx++)
+			{
+				relay = vesselRelays[rIdx];
+				if (relay.CanTransmit())
+				{
+					return true;
+				}
+			}
+
+			return false;
+		}
+
+		/// <summary>
+		/// Gets the <see cref="AntennaRange.ConnectionStatus"/> for this <see cref="Vessel"/>
+		/// </summary>
+		/// <param name="vessel">This <see cref="Vessel"/></param>
+		public static ConnectionStatus GetConnectionStatus(this Vessel vessel)
+		{
+			bool canTransmit = false;
+
+			IList<IAntennaRelay> vesselRelays = RelayDatabase.Instance[vessel];
+			IAntennaRelay relay;
+			for (int rIdx = 0; rIdx < vesselRelays.Count; rIdx++)
+			{
+				relay = vesselRelays[rIdx];
+				if (relay.LinkStatus > ConnectionStatus.None)
+				{
+					canTransmit = true;
+
+					if (relay.LinkStatus == ConnectionStatus.Optimal)
+					{
+						return ConnectionStatus.Optimal;
+					}
+				}
+			}
+
+			if (canTransmit)
+			{
+				return ConnectionStatus.Suboptimal;
+			}
+			else
+			{
+				return ConnectionStatus.None;
+			}
+		}
+
+		/// <summary>
+		/// Gets the best relay on this Vessel.  The best relay may not be able to transmit.
+		/// </summary>
+		/// <param name="vessel">This <see cref="Vessel"/></param>
+		public static IAntennaRelay GetBestRelay(this Vessel vessel)
+		{
+			return RelayDatabase.Instance.GetBestVesselRelay(vessel);
+		}
+	}
+
+	#pragma warning disable 1591
+	/// <summary>
+	/// An Enum describing the connection status of a vessel or relay.
+	/// </summary>
+	public enum ConnectionStatus
+	{
+		None,
+		Suboptimal,
+		Optimal
+	}
+}
+
+

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