Add warning message for type C gearboxes

Author: peternewell

Source/Orts.Simulation/Simulation/RollingStocks/MSTSControlTrailerCar.cs

@@ -55,6 +55,7 @@ public class MSTSControlTrailerCar : MSTSLocomotive
         bool ControlGearDown = false;
         int ControlGearIndex;
         int ControlGearIndication;
+        string ControlGearBoxType;
 
 
         public MSTSControlTrailerCar(Simulator simulator, string wagFile)
@@ -216,11 +217,15 @@ public override void Update(float elapsedClockSeconds)
                         }
                     }
 
-                    // Read values for the HuD, will be based upon the last motorcar
+                    // Read values for the HuD and other requirements, will be based upon the last motorcar
                     if (locog != null)
                     {
                         ControlGearIndex = locog.DieselEngines[0].GearBox.CurrentGearIndex;
                         ControlGearIndication = locog.DieselEngines[0].GearBox.GearIndication;
+                        if (locog.DieselEngines[0].GearBox.GearBoxType == TypesGearBox.C)
+                        {
+                            ControlGearBoxType = "C";
+                        }
                     }
                 }
 
@@ -270,25 +275,53 @@ protected override void UpdateSoundVariables(float elapsedClockSeconds)
         public override void ChangeGearUp()
         {
 
-                       GearBoxController.CurrentNotch += 1;
+            if (ControlGearBoxType == "C")
+            {
+                if (ThrottlePercent == 0)
+                {
+                    GearBoxController.CurrentNotch += 1;
+                }
+                else
+                {
+                    Simulator.Confirmer.Message(ConfirmLevel.Warning, Simulator.Catalog.GetString("Throttle must be reduced to Idle before gear change can happen."));
+                }
+            }
+            else
+            {
+                GearBoxController.CurrentNotch += 1;
+            }
+
+            if (GearBoxController.CurrentNotch > ControllerNumberOfGears)
+            {
+                GearBoxController.CurrentNotch = ControllerNumberOfGears;
+            }
+            else if (GearBoxController.CurrentNotch < 0)
+            {
+                GearBoxController.CurrentNotch = 0;
+            }
 
-                        if(GearBoxController.CurrentNotch > ControllerNumberOfGears)
-                        {
-                            GearBoxController.CurrentNotch = ControllerNumberOfGears;
-                        }
-                        else if (GearBoxController.CurrentNotch < 0)
-                        {
-                            GearBoxController.CurrentNotch = 0;
-                        }
-            
             ControlGearUp = true;
             ControlGearDown = false;
 
         }
 
         public override void ChangeGearDown()
         {
-            GearBoxController.CurrentNotch -= 1;
+            if (ControlGearBoxType == "C")
+            {
+                if (ThrottlePercent == 0)
+                {
+                    GearBoxController.CurrentNotch -= 1;
+                }
+                else
+                {
+                    Simulator.Confirmer.Message(ConfirmLevel.Warning, Simulator.Catalog.GetString("Throttle must be reduced to Idle before gear change can happen."));
+                }
+            }
+            else
+            {
+                GearBoxController.CurrentNotch -= 1;
+            }
 
             if (GearBoxController.CurrentNotch > ControllerNumberOfGears)
             {
@@ -303,9 +336,5 @@ public override void ChangeGearDown()
             ControlGearDown = true;
 
         }
-
-
-
-
     }
 }

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

@@ -3637,10 +3637,9 @@ public virtual void StartGearBoxIncrease()
         {
             if (GearBoxController != null)
             {
-                
+
                 if (this is MSTSDieselLocomotive)
                 {
-
                     var dieselloco = this as MSTSDieselLocomotive;
 
                     if (dieselloco.DieselTransmissionType == MSTSDieselLocomotive.DieselTransmissionTypes.Mechanic)