Automatic merge of T1.5-rc1-61-g82a9ca1ff and 12 pull requests

- Pull request #570 at 824f96f: Experimental glTF 2.0 support with PBR lighting
- Pull request #630 at 704731a: Sky Color Fix (Addresses Trello Roadmap Card #367 for More accurate sunrise and sunset)
- Pull request #652 at 918fdb1: Add button functions to Raildriver
- Pull request #677 at c1c417f: Correct double heading bug
- Pull request #688 at e44897d: adds Help Icons to Video tab
- Pull request #692 at 20de7da: Italian translation for OR 1.5
- Pull request #693 at 453ac3d: French locales
- Pull request #699 at 6baf43d: Bug fix for https://bugs.launchpad.net/or/+bug/1987453. Web: HUD/Force Information, some labels not visible.
- Pull request #706 at 265d33d: TCS Extensions
- Pull request #711 at 85ce248: Bug fix for https://bugs.launchpad.net/or/+bug/1989426 Out of bounds crash in Precipitation.cs
- Pull request #712 at 68cd8ab: Search for NORMAL signals if no argument is provided
- Pull request #713 at dd69c72: https://blueprints.launchpad.net/or/+spec/cruise-control

Source/Orts.Simulation/Simulation/RollingStocks/MSTSLocomotive.cs

@@ -1970,7 +1970,11 @@ public override void Update(float elapsedClockSeconds)
 
             // Cruise Control
             CruiseControl?.Update(elapsedClockSeconds);
-            if (CruiseControl != null && CruiseControl.OverrideForceCalculation) CruiseControl.UpdateMotiveForce(elapsedClockSeconds, AbsWheelSpeedMpS);
+            if (CruiseControl != null && CruiseControl.OverrideForceCalculation)
+            {
+                CruiseControl.UpdateMotiveForce(elapsedClockSeconds, AbsWheelSpeedMpS);
+                SetAbsTractionSpeedMpS();
+            }
             else UpdateTractiveForce(elapsedClockSeconds, t, AbsSpeedMpS, AbsWheelSpeedMpS);
 
             if (MultiPositionControllers != null)
@@ -2356,6 +2360,28 @@ protected virtual void UpdateControllers(float elapsedClockSeconds)
 #endif
                     }
 
+        /// <summary>
+        /// This function derives AbsTractionSpeedMpS.
+        /// </summary>
+        public void SetAbsTractionSpeedMpS()
+        {
+                if (TractionMotorType == TractionMotorTypes.AC)
+                {
+                    AbsTractionSpeedMpS = AbsSpeedMpS;
+                }
+                else
+                {
+                    if (WheelSlip && AdvancedAdhesionModel)
+                    {
+                        AbsTractionSpeedMpS = AbsWheelSpeedMpS;
+                    }
+                    else
+                    {
+                        AbsTractionSpeedMpS = AbsSpeedMpS;
+                    }
+                }
+        }
+
         /// <summary>
         /// This function updates periodically the locomotive's motive force.
         /// </summary>
@@ -2376,21 +2402,7 @@ protected virtual void UpdateTractiveForce(float elapsedClockSeconds, float t, f
                 // More modern locomotive have a more sophisticated system that eliminates slip in the majority (if not all circumstances).
                 // Simple adhesion control does not have any slip control feature built into it.
                 // TODO - a full review of slip/no slip control.
-                if (TractionMotorType == TractionMotorTypes.AC)
-                {
-                    AbsTractionSpeedMpS = AbsSpeedMpS;
-                }
-                else
-                {
-                    if (WheelSlip && AdvancedAdhesionModel)
-                    {
-                        AbsTractionSpeedMpS = AbsWheelSpeedMpS;
-                    }
-                    else
-                    {
-                        AbsTractionSpeedMpS = AbsSpeedMpS;
-                    }
-                }
+                SetAbsTractionSpeedMpS();
 
                 if (TractiveForceCurves == null)
                 {