Adding support for air piped systems and EOTs

Author: SteelFill

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

@@ -162,6 +162,11 @@ public override void Update(float elapsedClockSeconds)
             float brakeShoeFriction = Car.GetBrakeShoeFrictionFactor();
             Car.HuDBrakeShoeFriction = Car.GetBrakeShoeFrictionCoefficientHuD();
 
+            // Update anglecock opening. Anglecocks set to gradually open over 30 seconds, but close instantly.
+            // Gradual opening prevents undesired emergency applications
+            UpdateAngleCockState(AngleCockAOpen, ref AngleCockAOpenAmount, ref AngleCockAOpenTime);
+            UpdateAngleCockState(AngleCockBOpen, ref AngleCockBOpenAmount, ref AngleCockBOpenTime);
+
             Car.BrakeRetardForceN = ( Car.MaxHandbrakeForceN * HandbrakePercent / 100) * brakeShoeFriction; // calculates value of force applied to wheel, independent of wheel skid
             if (Car.BrakeSkid) // Test to see if wheels are skiding to excessive brake force
             {

Source/Orts.Simulation/Simulation/RollingStocks/SubSystems/EOT.cs

@@ -123,9 +123,15 @@ public override void Update(float elapsedClockSeconds)
             if (Train.Simulator.PlayerLocomotive.Train == Train && EOTState == EOTstate.ArmedTwoWay &&
                 (EOTEmergencyBrakingOn ||
                 (Train.Simulator.PlayerLocomotive as MSTSLocomotive).TrainBrakeController.GetStatus().ToLower().StartsWith("emergency")))
-                Train.Cars.Last().BrakeSystem.AngleCockBOpen = true;
+            {
+                // Simulate EOT opening brake pipe to atmosphere by instantly opening rear anglecock
+                this.BrakeSystem.AngleCockBOpen = true;
+                this.BrakeSystem.AngleCockBOpenAmount = 1;
+            }
             else
-                Train.Cars.Last().BrakeSystem.AngleCockBOpen = false;
+            {
+                this.BrakeSystem.AngleCockBOpen = false;
+            }
             base.Update(elapsedClockSeconds);
         }
 
@@ -277,4 +283,4 @@ public void EmergencyBrake (bool toState)
         }
 
     }
-}
+}