Core: Inlined vessel type loading to avoid the stack frame.
Core: Inlined vessel type loading to avoid the stack frame.

--- 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;
@@ -93,8 +95,9 @@
 		[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";
 
@@ -739,28 +742,26 @@
 
 		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 +947,12 @@
 			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 +964,18 @@
 				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()
@@ -1155,8 +1163,6 @@
 			this.UpdateTimer = 0f;
 
 			this.vesselSimActive = (VOID_SaveValue<bool>)true;
-			SimManager.Atmosphere = 0d;
-			SimManager.OnReady += this.GetSimManagerResults;
 
 			this.useToolbarManager = ToolbarManager.ToolbarAvailable;
 

--- a/VOID_CBInfoBrowser.cs
+++ b/VOID_CBInfoBrowser.cs
@@ -203,7 +203,7 @@
 				GUILayout.Label("Natural satellites:");
 				GUILayout.Label("Artificial satellites:");
 				GUILayout.Label("Surface gravity:");
-				GUILayout.Label("Atmosphere altitude:");
+				GUILayout.Label("Atmosphere Depth:");
 				GUILayout.Label("Atmospheric O\u2082:");
 				GUILayout.Label("Has ocean:");
 
@@ -393,7 +393,7 @@
 
 			if (body.atmosphere)
 			{
-				GUILayout.Label("≈ " + Tools.MuMech_ToSI(body.maxAtmosphereAltitude) + "m",
+				GUILayout.Label("≈ " + Tools.MuMech_ToSI(body.atmosphereDepth) + "m",
 					VOID_Styles.labelRight,
 					GUILayout.ExpandWidth(true));
 

--- 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()
 		{
@@ -151,7 +164,7 @@
 
 			if (HighLogic.LoadedSceneIsEditor && this.selectedBody.atmosphere && this.useSeaLevel)
 			{
-				SimManager.Atmosphere = this.selectedBody.atmosphereMultiplier * 101.325d;
+				SimManager.Atmosphere = this.selectedBody.GetPressure(0) * PhysicsGlobals.KpaToAtmospheres;
 			}
 			else
 			{

--- 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();