TBTR: Allow flipping direction of vehicles in template editor

src/tbtr_template_gui_create.cpp

@@ -378,7 +378,10 @@ public:
 				GetDepotVehiclePtData gdvp = { nullptr, nullptr };
 
 				if (this->GetVehicleFromDepotWndPt(pt.x - nwi->pos_x, pt.y - nwi->pos_y, &v, &gdvp) == MODE_DRAG_VEHICLE && sel != INVALID_VEHICLE) {
-					if (gdvp.wagon == nullptr || gdvp.wagon->index != sel) {
+					if (gdvp.wagon != nullptr && gdvp.wagon->index == sel && _ctrl_pressed) {
+						DoCommandP(Vehicle::Get(sel)->tile, Vehicle::Get(sel)->index, true,
+								CMD_REVERSE_TRAIN_DIRECTION | CMD_MSG(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE));
+					} else if (gdvp.wagon == nullptr || gdvp.wagon->index != sel) {
 						this->vehicle_over = INVALID_VEHICLE;
 						TrainDepotMoveVehicle(gdvp.wagon, sel, gdvp.head);
 					}

src/train_cmd.cpp

@@ -2409,7 +2409,7 @@ CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32
 
 		Train *front = v->First();
 		/* make sure the vehicle is stopped in the depot */
-		if (!front->IsStoppedInDepot()) {
+		if (!front->IsStoppedInDepot() && !front->IsVirtual()) {
 			return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
 		}