Allow for Brake shoe force in dynamic load operation.

Author: peternewell

Source/Orts.Simulation/Simulation/RollingStocks/MSTSWagon.cs

@@ -676,7 +676,11 @@ public virtual void LoadFromWagFile(string wagFilePath)
                     LoadEmptyWagonFrontalAreaM2 = WagonFrontalAreaM2;
                 }
 
-                if (FreightAnimations.EmptyMaxBrakeForceN > 0)
+                if (FreightAnimations.EmptyMaxBrakeShoeForceN > 0)
+                {
+                    LoadEmptyMaxBrakeForceN = FreightAnimations.EmptyMaxBrakeShoeForceN;
+                }
+                else if (FreightAnimations.EmptyMaxBrakeForceN > 0)
                 {
                     LoadEmptyMaxBrakeForceN = FreightAnimations.EmptyMaxBrakeForceN;
                 }
@@ -752,8 +756,11 @@ public virtual void LoadFromWagFile(string wagFilePath)
                         LoadFullWagonFrontalAreaM2 = WagonFrontalAreaM2;
                     }
 
-
-                    if (FreightAnimations.FullPhysicsStaticOne.FullStaticMaxBrakeForceN > 0)
+                    if (FreightAnimations.FullPhysicsStaticOne.FullStaticMaxBrakeShoeForceN > 0)
+                    {
+                        LoadFullMaxBrakeForceN = FreightAnimations.FullPhysicsStaticOne.FullStaticMaxBrakeShoeForceN;
+                    }
+                    else if (FreightAnimations.FullPhysicsStaticOne.FullStaticMaxBrakeForceN > 0)
                     {
                         LoadFullMaxBrakeForceN = FreightAnimations.FullPhysicsStaticOne.FullStaticMaxBrakeForceN;
                     }
@@ -839,8 +846,11 @@ public virtual void LoadFromWagFile(string wagFilePath)
                         LoadFullWagonFrontalAreaM2 = WagonFrontalAreaM2;
                     }
 
-
-                    if (FreightAnimations.FullPhysicsContinuousOne.FullMaxBrakeForceN > 0)
+                    if (FreightAnimations.FullPhysicsContinuousOne.FullMaxBrakeShoeForceN > 0)
+                    {
+                        LoadFullMaxBrakeForceN = FreightAnimations.FullPhysicsContinuousOne.FullMaxBrakeShoeForceN;
+                    }
+                    else if (FreightAnimations.FullPhysicsContinuousOne.FullMaxBrakeForceN > 0)
                     {
                         LoadFullMaxBrakeForceN = FreightAnimations.FullPhysicsContinuousOne.FullMaxBrakeForceN;
                     }

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

@@ -67,6 +67,7 @@ public class FreightAnimations
         public float EmptyORTSWagonFrontalAreaM2 = -9999;
         public float EmptyORTSDavisDragConstant = -9999;
         public float EmptyMaxBrakeForceN = -9999;
+        public float EmptyMaxBrakeShoeForceN = -9999;
         public float EmptyMaxHandbrakeForceN = -9999;
         public float EmptyCentreOfGravityM_Y = -9999; // get centre of gravity after adjusted for freight animation
         public bool ContinuousFreightAnimationsPresent = false; // Flag to indicate that a continuous freight animation is present
@@ -104,6 +105,7 @@ public FreightAnimations(STFReader stf, MSTSWagon wagon)
                 new STFReader.TokenProcessor("emptyortswagonfrontalarea", ()=>{ EmptyORTSWagonFrontalAreaM2 = stf.ReadFloatBlock(STFReader.UNITS.AreaDefaultFT2, -1); }),
                 new STFReader.TokenProcessor("emptyortsdavisdragconstant", ()=>{ EmptyORTSDavisDragConstant = stf.ReadFloatBlock(STFReader.UNITS.Any, -1); }),
                 new STFReader.TokenProcessor("emptymaxbrakeforce", ()=>{ EmptyMaxBrakeForceN = stf.ReadFloatBlock(STFReader.UNITS.Force, -1); }),
+                new STFReader.TokenProcessor("emptymaxbrakeshoeforce", ()=>{ EmptyMaxBrakeShoeForceN = stf.ReadFloatBlock(STFReader.UNITS.Force, -1); }),
                 new STFReader.TokenProcessor("emptymaxhandbrakeforce", ()=>{ EmptyMaxHandbrakeForceN = stf.ReadFloatBlock(STFReader.UNITS.Force, -1); }),
                 new STFReader.TokenProcessor("emptycentreofgravity_y", ()=>{ EmptyCentreOfGravityM_Y = stf.ReadFloatBlock(STFReader.UNITS.Distance, -1); }),
                 new STFReader.TokenProcessor("freightanimcontinuous", ()=>
@@ -285,6 +287,7 @@ public FreightAnimations(FreightAnimations copyFACollection, MSTSWagon wagon)
             EmptyORTSWagonFrontalAreaM2 = copyFACollection.EmptyORTSWagonFrontalAreaM2;
             EmptyORTSDavisDragConstant = copyFACollection.EmptyORTSDavisDragConstant;
             EmptyMaxBrakeForceN = copyFACollection.EmptyMaxBrakeForceN;
+            EmptyMaxBrakeShoeForceN = copyFACollection.EmptyMaxBrakeShoeForceN;
             EmptyMaxHandbrakeForceN = copyFACollection.EmptyMaxHandbrakeForceN;
             EmptyCentreOfGravityM_Y = copyFACollection.EmptyCentreOfGravityM_Y;
             ContinuousFreightAnimationsPresent = copyFACollection.ContinuousFreightAnimationsPresent;
@@ -982,6 +985,7 @@ public class FreightAnimationContinuous : FreightAnimation
         public float FullORTSWagonFrontalAreaM2 = -9999;
         public float FullORTSDavisDragConstant = -9999;
         public float FullMaxBrakeForceN = -9999;
+        public float FullMaxBrakeShoeForceN = -9999;
         public float FullMaxHandbrakeForceN = -9999;
         public float FullCentreOfGravityM_Y = -9999; // get centre of gravity after adjusted for freight animation
 
@@ -1008,6 +1012,7 @@ public FreightAnimationContinuous(STFReader stf, MSTSWagon wagon)
                 new STFReader.TokenProcessor("fullortswagonfrontalarea", ()=>{ FullORTSWagonFrontalAreaM2 = stf.ReadFloatBlock(STFReader.UNITS.AreaDefaultFT2, -1); }),
                 new STFReader.TokenProcessor("fullortsdavisdragconstant", ()=>{ FullORTSDavisDragConstant = stf.ReadFloatBlock(STFReader.UNITS.Any, -1); }),
                 new STFReader.TokenProcessor("fullmaxbrakeforce", ()=>{ FullMaxBrakeForceN = stf.ReadFloatBlock(STFReader.UNITS.Force, -1); }),
+                new STFReader.TokenProcessor("fullmaxbrakeshoeforce", ()=>{ FullMaxBrakeShoeForceN = stf.ReadFloatBlock(STFReader.UNITS.Force, -1); }),
                 new STFReader.TokenProcessor("fullmaxhandbrakeforce", ()=>{ FullMaxHandbrakeForceN = stf.ReadFloatBlock(STFReader.UNITS.Force, -1); }),
                 new STFReader.TokenProcessor("fullcentreofgravity_y", ()=>{ FullCentreOfGravityM_Y = stf.ReadFloatBlock(STFReader.UNITS.Distance, -1); })
             });
@@ -1036,6 +1041,7 @@ public FreightAnimationContinuous(FreightAnimationContinuous freightAnimContin,
             FullORTSWagonFrontalAreaM2 = freightAnimContin.FullORTSWagonFrontalAreaM2;
             FullORTSDavisDragConstant = freightAnimContin.FullORTSDavisDragConstant;
             FullMaxBrakeForceN = freightAnimContin.FullMaxBrakeForceN;
+            FullMaxBrakeShoeForceN = freightAnimContin.FullMaxBrakeShoeForceN;
             FullMaxHandbrakeForceN = freightAnimContin.FullMaxHandbrakeForceN;
             FullCentreOfGravityM_Y = freightAnimContin.FullCentreOfGravityM_Y;          
         }
@@ -1070,6 +1076,7 @@ public enum VisibleFrom
         public float FullStaticORTSWagonFrontalAreaM2 = -9999;
         public float FullStaticORTSDavisDragConstant = -9999;
         public float FullStaticMaxBrakeForceN = -9999;
+        public float FullStaticMaxBrakeShoeForceN = -9999;
         public float FullStaticMaxHandbrakeForceN = -9999;
         public float FullStaticCentreOfGravityM_Y = -9999; // get centre of gravity after adjusted for freight animation
 
@@ -1125,6 +1132,7 @@ public FreightAnimationStatic(STFReader stf)
             new STFReader.TokenProcessor("fullortswagonfrontalarea", ()=>{ FullStaticORTSWagonFrontalAreaM2 = stf.ReadFloatBlock(STFReader.UNITS.AreaDefaultFT2, -1); }),
             new STFReader.TokenProcessor("fullortsdavisdragconstant", ()=>{ FullStaticORTSDavisDragConstant = stf.ReadFloatBlock(STFReader.UNITS.Any, -1); }),
             new STFReader.TokenProcessor("fullmaxbrakeforce", ()=>{ FullStaticMaxBrakeForceN = stf.ReadFloatBlock(STFReader.UNITS.Force, -1); }),
+            new STFReader.TokenProcessor("fullmaxbrakeshoeforce", ()=>{ FullStaticMaxBrakeShoeForceN = stf.ReadFloatBlock(STFReader.UNITS.Force, -1); }),
             new STFReader.TokenProcessor("fullmaxhandbrakeforce", ()=>{ FullStaticMaxHandbrakeForceN = stf.ReadFloatBlock(STFReader.UNITS.Force, -1); }),
             new STFReader.TokenProcessor("fullcentreofgravity_y", ()=>{ FullStaticCentreOfGravityM_Y = stf.ReadFloatBlock(STFReader.UNITS.Distance, -1); })
             });
@@ -1150,6 +1158,7 @@ public FreightAnimationStatic(FreightAnimationStatic freightAnimStatic)
             FullStaticORTSWagonFrontalAreaM2 = freightAnimStatic.FullStaticORTSWagonFrontalAreaM2;
             FullStaticORTSDavisDragConstant = freightAnimStatic.FullStaticORTSDavisDragConstant;
             FullStaticMaxBrakeForceN = freightAnimStatic.FullStaticMaxBrakeForceN;
+            FullStaticMaxBrakeShoeForceN = freightAnimStatic.FullStaticMaxBrakeShoeForceN;
             FullStaticMaxHandbrakeForceN = freightAnimStatic.FullStaticMaxHandbrakeForceN;
             FullStaticCentreOfGravityM_Y = freightAnimStatic.FullStaticCentreOfGravityM_Y;
         }

Source/Orts.Simulation/Simulation/RollingStocks/TrainCar.cs

@@ -210,9 +210,9 @@ public static Interpolator SteamHeatBoilerFuelUsageGalukpH()
 
         public float MaxHandbrakeForceN;
         public float MaxBrakeForceN = 89e3f;
-        public float MaxBrakeShoeForceN;
+        public float MaxBrakeShoeForceN; // This is the force applied to the brake shoe, hence it will be decreased by CoF to give force applied to the wheel
         public float InitialMaxHandbrakeForceN;  // Initial force when agon initialised
-        public float InitialMaxBrakeForceN = 89e3f;   // Initial force when wagon initialised
+        public float InitialMaxBrakeForceN = 89e3f;   // Initial force when wagon initialised, this is the force on the wheel, ie after the brake shoe.
 
         // Coupler Animation
         public AnimatedCoupler FrontCoupler = new AnimatedCoupler();