Automatic merge of T1.5.1-567-gefb91a402 and 13 pull requests

- Pull request #757 at 98dd1a7: Unify RailDriver code implementations
- Pull request #831 at 61bbf43: poor mans switch panel on tablet
- Pull request #839 at d00beb9: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #841 at 410a585: https://blueprints.launchpad.net/or/+spec/animating-trainset-windows
- Pull request #853 at d05f581: Notify out of focus
- Pull request #855 at b39e5d8: Adds new route from TrainSimulations
- Pull request #857 at 9afc8c3: Adding Air Flow Meters
- Pull request #862 at 489f261: Fix engine leak problem
- Pull request #863 at a34b857: Alternate preset 3D cabviewpoints
- Pull request #864 at e71bc5a: Fixes for Undesired Emergency Applications
- Pull request #865 at 776d6df: Dispatcher window improvements
- Pull request #866 at c15333e: Fix Articulation For 0-Axle Train Cars
- Pull request #870 at 5cb32fa: Fix water restore

Author: openrails-bot

Source/Orts.Simulation/Simulation/RollingStocks/SubSystems/Brakes/MSTS/AirSinglePipe.cs

@@ -54,6 +54,7 @@ public class AirSinglePipe : MSTSBrakeSystem
         protected float MaxAuxilaryChargingRatePSIpS = 1.684f;
         protected float BrakeInsensitivityPSIpS = 0.07f;
         protected float EmergencyValveActuationRatePSIpS = 0;
+        protected bool LegacyEmergencyValve = false;
         protected float EmergencyDumpValveRatePSIpS = 0;
         protected float EmergencyDumpValveTimerS = 120;
         protected float? EmergencyDumpStartTime;
@@ -174,6 +175,7 @@ public override void InitializeFromCopy(BrakeSystem copy)
             TripleValveSensitivityPSI = thiscopy.TripleValveSensitivityPSI;
             BrakeCylinderSpringPressurePSI = thiscopy.BrakeCylinderSpringPressurePSI;
             ServiceMaxCylPressurePSI = thiscopy.ServiceMaxCylPressurePSI;
+            LegacyEmergencyValve = thiscopy.LegacyEmergencyValve;
         }
 
         // Get the brake BC & BP for EOT conditions
@@ -345,6 +347,7 @@ public override void Save(BinaryWriter outf)
             outf.Write((int)HoldingValve);
             outf.Write(UniformChargingActive);
             outf.Write(QuickServiceActive);
+            outf.Write(LegacyEmergencyValve);
         }
 
         public override void Restore(BinaryReader inf)
@@ -371,6 +374,7 @@ public override void Restore(BinaryReader inf)
             HoldingValve = (ValveState)inf.ReadInt32();
             UniformChargingActive = inf.ReadBoolean();
             QuickServiceActive = inf.ReadBoolean();
+            LegacyEmergencyValve = inf.ReadBoolean();
         }
 
         public override void Initialize(bool handbrakeOn, float maxPressurePSI, float fullServPressurePSI, bool immediateRelease)
@@ -427,7 +431,10 @@ public override void Initialize()
             if (EngineRelayValveRatio == 0) EngineRelayValveRatio = RelayValveRatio;
 
             if ((Car as MSTSWagon).EmergencyReservoirPresent && EmergencyValveActuationRatePSIpS == 0)
+            {
                 EmergencyValveActuationRatePSIpS = 15;
+                LegacyEmergencyValve = true;
+            }
 
             if (InitialApplicationThresholdPSI == 0)
             {
@@ -478,8 +485,8 @@ public void UpdateTripleValveState(float elapsedClockSeconds)
             var prevState = TripleValveState;
             var valveType = (Car as MSTSWagon).BrakeValve;
             bool disableGradient = !(Car.Train.LeadLocomotive is MSTSLocomotive) && Car.Train.TrainType != Orts.Simulation.Physics.Train.TRAINTYPE.STATIC;
-            // Small workaround to allow trains to more reliably go into emergency after uncoupling
-            bool emergencyTripped = (Car.Train.TrainType == Orts.Simulation.Physics.Train.TRAINTYPE.STATIC) ?
+            // Legacy cars and static cars use a simpler check for emergency applications to ensure emergency applications occur despite simplified physics
+            bool emergencyTripped = (Car.Train.TrainType == Orts.Simulation.Physics.Train.TRAINTYPE.STATIC || LegacyEmergencyValve) ?
                 BrakeLine1PressurePSI <= 0.75f * EmergResPressurePSI * AuxCylVolumeRatio / (AuxCylVolumeRatio + 1) : Math.Max(-SmoothedBrakePipeChangePSIpS.SmoothedValue, 0) > EmergencyValveActuationRatePSIpS;
 
             if (valveType == MSTSWagon.BrakeValveType.Distributor)