Fix in Calculator::GetPriceForTimeStep():

Allow some tolerance (of 3 minutes) when looking up the
	current time-step value in the duration-array.
	Otherwise, when corossing a minute-boundary, it can happen to
	not find the match and returning a price of 0 (which is almost
	always wrong).

library/src/calculate_price.cpp

@@ -780,7 +780,7 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
     double maxMin = tariff->getPaymentOptions(paymentOptionIndex).pop_max_time;
 
     // DEBUG
-    qCritical() << "compute_price_for_parking_ticket() " << endl
+    qCritical() << __func__ << ":" << __LINE__ << endl
                 << "          paymentOptionIndex: " << paymentOptionIndex << endl
                 << "          start_parking_time: " << start_parking_time << endl
                 << "          netto_parking_time: " << netto_parking_time << endl
@@ -912,10 +912,12 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
 
             if (carryOver == 1) {
                 QTime carryOverStart = tariff->TariffCarryOverOptions.find(pop_carry_over_option_id)->second.carryover[weekDay].static_start;
+                QTime carryOverEnd = tariff->TariffCarryOverOptions.find(pop_carry_over_option_id)->second.carryover[weekDay].static_end;
                 int carryOverDuration = tariff->TariffCarryOverOptions.find(pop_carry_over_option_id)->second.carryover[weekDay].duration;
 
-                qCritical() << __func__ << ":" << __LINE__ << "   carryOverStart" << carryOverStart.toString(Qt::ISODate);
-                qCritical() << __func__ << ":" << __LINE__ << "carryOverDuration" << carryOverDuration;
+                qCritical() << __func__ << ":" << __LINE__ << "   carryOverStart:" << carryOverStart.toString(Qt::ISODate);
+                qCritical() << __func__ << ":" << __LINE__ << "     carryOverEnd:" << carryOverEnd.toString(Qt::ISODate);
+                qCritical() << __func__ << ":" << __LINE__ << "carryOverDuration:" << carryOverDuration;
 
                 // handle carry over
                 int minutesUntilCarryOver = effectiveStartTime.time().secsTo(carryOverStart) / 60;
@@ -942,11 +944,20 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
                 } else
                 if (end_parking_time.time() == carryOverStart) {
                     qCritical() << __func__ << ":" << __LINE__ << "        end-parking-time:" << end_parking_time.toString(Qt::ISODate);
-                    qCritical() << __func__ << ":" << __LINE__ << "   carryOverStart" << carryOverStart.toString(Qt::ISODate);
+                    qCritical() << __func__ << ":" << __LINE__ << "          carryOverStart:" << carryOverStart.toString(Qt::ISODate);
                     ATBPaymentOption const &po = tariff->getPaymentOptions(paymentOptionIndex);
                     if (po.pop_apply_carry_over_to_ticket_endtime) {
                         end_parking_time = end_parking_time.addSecs(carryOverDuration * 60);
+                        qCritical() << __func__ << ":" << __LINE__ << "adapted end-parking-time:" << end_parking_time.toString(Qt::ISODate);
+                    }
+                } else
+                if (end_parking_time.time() == carryOverEnd) {
                     qCritical() << __func__ << ":" << __LINE__ << "        end-parking-time:" << end_parking_time.toString(Qt::ISODate);
+                    qCritical() << __func__ << ":" << __LINE__ << "            carryOverEnd:" << carryOverEnd.toString(Qt::ISODate);
+                    ATBPaymentOption const &po = tariff->getPaymentOptions(paymentOptionIndex);
+                    if (po.pop_apply_carry_over_to_ticket_endtime == false) {
+                        end_parking_time = end_parking_time.addSecs(-carryOverDuration * 60);
+                        qCritical() << __func__ << ":" << __LINE__ << "adapted end-parking-time:" << end_parking_time.toString(Qt::ISODate);
                     }
                 }
             } else {

library/src/calculator_functions.cpp

@@ -458,7 +458,7 @@ Calculator::ComputeDurationFromCost(Configuration *cfg,
                                                         arg(cost).arg(nettoParktimeForCost);
 
     int cnt = 0;
-    while (++cnt < 10 && netto_parking_time_in_minutes < nettoParktimeForCost) {
+    while (++cnt < 20 && netto_parking_time_in_minutes < nettoParktimeForCost) {
         // qCritical() << __func__ << ":" << __LINE__ << "cnt [" << cnt;
 
         brutto_parking_time_in_minutes = free_parking_time_in_minutes + netto_parking_time_in_minutes;
@@ -3584,7 +3584,9 @@ uint32_t Calculator::GetPriceForTimeStep(Configuration *cfg, int timeStep, int p
             qCritical() << "(" << __func__ << ":" << __LINE__ << ") timeStep" << timeStep;
         }
 
-        if (timeStep == pun_duration) {
+        // allow some tolerance when searching for [timeStep == pun_duration]:
+        // this might happen when crossing minute boundaries
+        if (std::abs(timeStep - pun_duration) < 4) {
             qCritical() << "(" << __func__ << ":" << __LINE__ << ") return price" << price;
             return price;
         }