Fixed Toolbar v. AppLauncher logic to actually work when you want the AppLauncher while Toolbar is installed.
Fixed Toolbar v. AppLauncher logic to actually work when you want the AppLauncher while Toolbar is installed.

--- a/Properties/AssemblyInfo.cs
+++ b/Properties/AssemblyInfo.cs
@@ -39,7 +39,7 @@
 // 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("0.17.1.*")]
+[assembly: AssemblyVersion("0.18.1.*")]
 // 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)]

--- a/VOIDCore_Generic.cs
+++ b/VOIDCore_Generic.cs
@@ -26,6 +26,8 @@
 // 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 KerbalEngineer.Editor;
+using KerbalEngineer.Helpers;
 using KerbalEngineer.VesselSimulator;
 using KSP;
 using System;
@@ -58,7 +60,8 @@
 		protected string VOIDIconOffActivePath;
 		protected string VOIDIconOffInactivePath;
 
-		private bool _useToolbarManager;
+		[AVOID_SaveValue("useToolbarManager")]
+		protected VOID_SaveValue<bool> useToolbarManager;
 
 		protected GUIStyle iconStyle;
 
@@ -93,8 +96,9 @@
 		[AVOID_SaveValue("timeScaleFlags")]
 		protected VOID_SaveValue<UInt32> timeScaleFlags;
 
-		// Vessel Type Housekeeping
+		// Load-up housekeeping
 		protected bool vesselTypesLoaded = false;
+		protected bool simManagerLoaded = false;
 
 		protected string defaultSkin = "KSP window 2";
 
@@ -312,39 +316,6 @@
 			}
 		}
 
-		protected bool useToolbarManager
-		{
-			get
-			{
-				return _useToolbarManager & ToolbarManager.ToolbarAvailable;
-			}
-			set
-			{
-				if (_useToolbarManager == value)
-				{
-					return;
-				}
-
-				if (value == false && this.ToolbarButton != null)
-				{
-					this.ToolbarButton.Destroy();
-					this.ToolbarButton = null;
-				}
-				if (value == true)
-				{
-					if (this.AppLauncherButton != null)
-					{
-						ApplicationLauncher.Instance.RemoveModApplication(this.AppLauncherButton);
-						this.AppLauncherButton = null;
-					}
-
-					this.InitializeToolbarButton();
-				}
-
-				_useToolbarManager = value;
-			}
-		}
-
 		/*
 		 * Events
 		 * */
@@ -473,6 +444,34 @@
 				}
 			}
 
+			if (this.useToolbarManager)
+			{
+				if (this.AppLauncherButton != null)
+				{
+					ApplicationLauncher.Instance.RemoveModApplication(this.AppLauncherButton);
+					this.AppLauncherButton = null;
+				}
+
+				if (this.ToolbarButton == null)
+				{
+					this.InitializeToolbarButton();
+				}
+			}
+			else
+			{
+				if (this.ToolbarButton != null)
+				{
+					this.ToolbarButton.Destroy();
+					this.ToolbarButton = null;
+				}
+
+				if (this.AppLauncherButton == null)
+				{
+					this.InitializeAppLauncherButton();
+				}
+
+			}
+
 			this.CheckAndSave();
 			this.UpdateTimer += Time.deltaTime;
 		}
@@ -607,7 +606,7 @@
 		{
 			GUIContent _content;
 
-			this.useToolbarManager = GUITools.Toggle(this.useToolbarManager, "Use Blizzy's Toolbar If Available");
+			this.useToolbarManager.value = GUITools.Toggle(this.useToolbarManager, "Use Blizzy's Toolbar If Available");
 
 			this.vesselSimActive.value = GUITools.Toggle(this.vesselSimActive.value,
 				"Enable Engineering Calculations");
@@ -739,28 +738,26 @@
 
 		protected void UpdateSimManager()
 		{
-			if (SimManager.ResultsReady())
-			{
-				if (HighLogic.LoadedSceneIsEditor)
-				{
-					SimManager.Gravity = VOID_Data.KerbinGee;
-				}
-				else
-				{
-					double radius = this.Vessel.Radius();
-					SimManager.Gravity = this.Vessel.mainBody.gravParameter / (radius * radius);
-				}
-
-				SimManager.minSimTime = new TimeSpan(0, 0, 0, 0, (int)(this.UpdatePeriod * 1000d));
-
-				SimManager.TryStartSimulation();
-			}
+			if (HighLogic.LoadedSceneIsFlight)
+			{
+				double radius = this.Vessel.Radius();
+				SimManager.Gravity = this.Vessel.mainBody.gravParameter / (radius * radius);
+				SimManager.Atmosphere = this.Vessel.staticPressurekPa * PhysicsGlobals.KpaToAtmospheres;
+				SimManager.Mach = this.Vessel.mach;
+				BuildAdvanced.Altitude = this.Vessel.altitude;
+				CelestialBodies.SelectedBody = this.Vessel.mainBody;
+			}
+
 			#if DEBUG
-			else
-			{
-				Tools.PostDebugMessage(this, "VesselSimulator results not ready.");
-			}
+			SimManager.logOutput = true;
 			#endif
+
+			SimManager.TryStartSimulation();
+
+			Tools.PostDebugMessage(this, "Started Engineer simulation with Atmosphere={0} atm and Gravity={1} m/s²",
+				SimManager.Atmosphere,
+				SimManager.Gravity
+			);
 		}
 
 		protected void GetSimManagerResults()
@@ -946,17 +943,12 @@
 			this.GUIStylesLoaded = true;
 		}
 
-		protected void LoadVesselTypes()
-		{
-			this.AllVesselTypes = Enum.GetValues(typeof(VesselType)).OfType<VesselType>().ToArray();
-			this.vesselTypesLoaded = true;
-		}
-
 		protected void LoadBeforeUpdate()
 		{
 			if (!this.vesselTypesLoaded)
 			{
-				this.LoadVesselTypes();
+				this.AllVesselTypes = Enum.GetValues(typeof(VesselType)).OfType<VesselType>().ToArray();
+				this.vesselTypesLoaded = true;
 			}
 
 			if (this.SortedBodyList == null && FlightGlobals.Bodies != null && FlightGlobals.Bodies.Count > 0)
@@ -968,6 +960,18 @@
 				Debug.Log(string.Format("sortedBodyList: {0}", string.Join("\n\t", this.SortedBodyList.Select(b => b.bodyName).ToArray())));
 			}
 
+			// SimManager initialization that we don't necessarily want to repeat every Update.
+			if (!this.simManagerLoaded && this.HomeBody != null)
+			{
+				SimManager.Gravity = VOID_Data.KerbinGee;
+				SimManager.Atmosphere = 0d;
+				SimManager.Mach = 1d;
+				CelestialBodies.SelectedBody = this.HomeBody;
+				BuildAdvanced.Altitude = 0d;
+				SimManager.OnReady += this.GetSimManagerResults;
+
+				this.simManagerLoaded = true;
+			}
 		}
 
 		protected void InitializeToolbarButton()
@@ -1155,10 +1159,8 @@
 			this.UpdateTimer = 0f;
 
 			this.vesselSimActive = (VOID_SaveValue<bool>)true;
-			SimManager.Atmosphere = 0d;
-			SimManager.OnReady += this.GetSimManagerResults;
-
-			this.useToolbarManager = ToolbarManager.ToolbarAvailable;
+
+			this.useToolbarManager = (VOID_SaveValue<bool>)ToolbarManager.ToolbarAvailable;
 
 			this.LoadConfig();
 

--- a/VOID_Data.cs
+++ b/VOID_Data.cs
@@ -116,29 +116,29 @@
 		public static readonly VOID_DoubleValue atmDensity =
 			new VOID_DoubleValue(
 				"Atmosphere Density",
-				new Func<double>(() => Core.Vessel.atmDensity * 1000f),
+				new Func<double>(() => Core.Vessel.atmDensity * 1000d),
 				"g/m³"
 			);
 
-		public static readonly VOID_FloatValue atmLimit =
-			new VOID_FloatValue(
-				"Atmosphere Limit",
-				new Func<float>(() => Core.Vessel.mainBody.maxAtmosphereAltitude),
+		public static readonly VOID_DoubleValue atmLimit =
+			new VOID_DoubleValue(
+				"Atmosphere Depth",
+				new Func<double>(() => Core.Vessel.mainBody.atmosphereDepth),
 				"m"
 			);
 
 		public static readonly VOID_DoubleValue atmPressure =
 			new VOID_DoubleValue(
-				"Pressure",
-				new Func<double>(() => Core.Vessel.staticPressure),
-				"atm"
-			);
-
-		public static readonly VOID_FloatValue temperature =
-			new VOID_FloatValue(
+				"Static Pressure",
+				new Func<double>(() => Core.Vessel.staticPressurekPa * 1000d),
+				"Pa"
+			);
+
+		public static readonly VOID_DoubleValue temperature =
+			new VOID_DoubleValue(
 				"Temperature",
-				new Func<float>(() => Core.Vessel.flightIntegrator.getExternalTemperature()),
-				"°C"
+				new Func<double>(() => Core.Vessel.atmosphericTemperature),
+				"K"
 			);
 
 		#endregion

--- a/VOID_StageInfo.cs
+++ b/VOID_StageInfo.cs
@@ -35,7 +35,7 @@
 
 		private bool showColumnSelection;
 
-		private CelestialBody selectedBody;
+		private CelestialBody _selectedBody;
 		[AVOID_SaveValue("bodyIdx")]
 		private VOID_SaveValue<int> bodyIdx;
 		private int lastIdx;
@@ -45,6 +45,19 @@
 		[AVOID_SaveValue("UseSealLevel")]
 		private VOID_SaveValue<bool> useSeaLevel;
 		private GUIContent seaLevelToggle;
+
+		private CelestialBody selectedBody
+		{
+			get
+			{
+				return this._selectedBody;
+			}
+			set
+			{
+				this._selectedBody = value;
+				KerbalEngineer.Helpers.CelestialBodies.SelectedBody = value;
+			}
+		}
 
 		public VOID_StageInfo() : base()
 		{

--- a/VOID_TWR.cs
+++ b/VOID_TWR.cs
@@ -3,11 +3,9 @@
 // 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 KerbalEngineer.VesselSimulator;
 using KSP;
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using ToadicusTools;
 using UnityEngine;
 
 namespace VOID
@@ -28,7 +26,7 @@
 				(TimeWarp.CurrentRate <= TimeWarp.MaxPhysicsRate)
 			)
 			{
-				KerbalEngineer.VesselSimulator.SimManager.RequestSimulation();
+				SimManager.RequestSimulation();
 			}
 
 			GUILayout.BeginVertical();