Debug: Show type of current order in vehicle debug info

src/order_cmd.cpp

@@ -3567,3 +3567,25 @@ void ShiftOrderDates(int interval)
 	SetWindowClassesDirty(WC_SCHDISPATCH_SLOTS);
 	InvalidateWindowClassesData(WC_DEPARTURES_BOARD, 0);
 }
+
+const char *GetOrderTypeName(OrderType order_type)
+{
+	static const char *names[] = {
+		"OT_NOTHING",
+		"OT_GOTO_STATION",
+		"OT_GOTO_DEPOT",
+		"OT_LOADING",
+		"OT_LEAVESTATION",
+		"OT_DUMMY",
+		"OT_GOTO_WAYPOINT",
+		"OT_CONDITIONAL",
+		"OT_IMPLICIT",
+		"OT_WAITING",
+		"OT_LOADING_ADVANCE",
+		"OT_RELEASE_SLOT",
+		"OT_COUNTER",
+	};
+	static_assert(lengthof(names) == OT_END);
+	if (order_type < OT_END) return names[order_type];
+	return "???";
+}

src/order_func.h

@@ -43,4 +43,6 @@ void DrawOrderString(const Vehicle *v, const Order *order, int order_index, int
 uint16 GetServiceIntervalClamped(uint interval, bool ispercent);
 bool OrderConditionCompare(OrderConditionComparator occ, int variable, int value);
 
+const char *GetOrderTypeName(OrderType order_type);
+
 #endif /* ORDER_FUNC_H */

src/table/newgrf_debug_data.h

@@ -148,8 +148,8 @@ class NIHVehicle : public NIHelper {
 		output.print(buffer);
 
 		if (v->IsPrimaryVehicle()) {
-			seprintf(buffer, lastof(buffer), "  Order indices: real: %u, implicit: %u, tt: %u",
-					v->cur_real_order_index, v->cur_implicit_order_index, v->cur_timetable_order_index);
+			seprintf(buffer, lastof(buffer), "  Order indices: real: %u, implicit: %u, tt: %u, current type: %s",
+					v->cur_real_order_index, v->cur_implicit_order_index, v->cur_timetable_order_index, GetOrderTypeName(v->current_order.GetType()));
 			output.print(buffer);
 		}
 		seprintf(buffer, lastof(buffer), "  V Cache: max speed: %u, cargo age period: %u, vis effect: %u",