Merge branch 'auto_timetables-sx' into jgrpp

src/timetable_cmd.cpp

@@ -96,6 +96,7 @@ static void ChangeTimetable(Vehicle *v, VehicleOrderID order_number, uint16 val,
  * - p1 = (bit  0-19) - Vehicle with the orders to change.
  * - p1 = (bit 20-27) - Order index to modify.
  * - p1 = (bit 28-29) - Timetable data to change (@see ModifyTimetableFlags)
+ * - p1 = (bit    30) - 0 to set timetable wait/travel time, 1 to clear it
  * @param p2 The amount of time to wait.
  * - p2 = (bit  0-15) - The data to modify as specified by p1 bits 28-29.
  *                      0 to clear times, UINT16_MAX to clear speed limit.
@@ -119,16 +120,20 @@ CommandCost CmdChangeTimetable(TileIndex tile, DoCommandFlag flags, uint32 p1, u
 	ModifyTimetableFlags mtf = Extract<ModifyTimetableFlags, 28, 2>(p1);
 	if (mtf >= MTF_END) return CMD_ERROR;
 
+	bool clear_field = GB(p1, 30, 1) == 1;
+
 	int wait_time   = order->GetWaitTime();
 	int travel_time = order->GetTravelTime();
 	int max_speed   = order->GetMaxSpeed();
 	switch (mtf) {
 		case MTF_WAIT_TIME:
 			wait_time = GB(p2, 0, 16);
+			if (clear_field) assert(wait_time == 0);
 			break;
 
 		case MTF_TRAVEL_TIME:
 			travel_time = GB(p2, 0, 16);
+			if (clear_field) assert(travel_time == 0);
 			break;
 
 		case MTF_TRAVEL_SPEED:
@@ -163,15 +168,15 @@ CommandCost CmdChangeTimetable(TileIndex tile, DoCommandFlag flags, uint32 p1, u
 		switch (mtf) {
 			case MTF_WAIT_TIME:
 				/* Set time if changing the value or confirming an estimated time as timetabled. */
-				if (wait_time != order->GetWaitTime() || (wait_time > 0 && !order->IsWaitTimetabled())) {
-					ChangeTimetable(v, order_number, wait_time, MTF_WAIT_TIME, wait_time > 0);
+				if (wait_time != order->GetWaitTime() || (clear_field == order->IsWaitTimetabled())) {
+					ChangeTimetable(v, order_number, wait_time, MTF_WAIT_TIME, !clear_field);
 				}
 				break;
 
 			case MTF_TRAVEL_TIME:
 				/* Set time if changing the value or confirming an estimated time as timetabled. */
-				if (travel_time != order->GetTravelTime() || (travel_time > 0 && !order->IsTravelTimetabled())) {
-					ChangeTimetable(v, order_number, travel_time, MTF_TRAVEL_TIME, travel_time > 0);
+				if (travel_time != order->GetTravelTime() || (clear_field == order->IsTravelTimetabled())) {
+					ChangeTimetable(v, order_number, travel_time, MTF_TRAVEL_TIME, !clear_field);
 				}
 				break;
 
@@ -445,6 +450,27 @@ CommandCost CmdAutomateTimetable(TileIndex index, DoCommandFlag flags, uint32 p1
 	return CommandCost();
 }
 
+static inline bool IsOrderUsableForSeparation(const Order *order)
+{
+	if (order->IsType(OT_CONDITIONAL)) {
+		// Auto separation is unlikely to useful work at all if one of these is present, so give up
+		return false;
+	}
+
+	if (order->GetWaitTime() == 0 && order->IsType(OT_GOTO_STATION)) {
+		// non-station orders are permitted to have 0 wait times
+		return false;
+	}
+
+	if (order->GetTravelTime() == 0 && !order->IsTravelTimetabled()) {
+		// 0 travel times are permitted, if explicitly timetabled
+		// this is useful for depot service orders
+		return false;
+	}
+
+	return true;
+}
+
 int TimeToFinishOrder(Vehicle *v, int n)
 {
 	int left;
@@ -452,8 +478,8 @@ int TimeToFinishOrder(Vehicle *v, int n)
 	int wait_time   = order->GetWaitTime();
 	int travel_time = order->GetTravelTime();
 	assert(order != NULL);
+	if (!IsOrderUsableForSeparation(order)) return -1;
 	if ((v->cur_real_order_index == n) && (v->last_station_visited == order->GetDestination())) {
-		if (wait_time == 0) return -1;
 		if (v->current_loading_time > 0) {
 			left = wait_time - v->current_order_time;
 		} else {
@@ -463,7 +489,6 @@ int TimeToFinishOrder(Vehicle *v, int n)
 	} else {
 		left = travel_time;
 		if (v->cur_real_order_index == n) left -= v->current_order_time;
-		if (travel_time == 0 || wait_time == 0) return -1;
 		if (left < 0) left = 0;
 		left +=wait_time;
 	}
@@ -490,10 +515,8 @@ int SeparationBetween(Vehicle *v1, Vehicle *v2)
 	if (time < 0) {
 		for (n = 0; n < v1->GetNumOrders(); n++) {
 			Order *order = v1->GetOrder(n);
-			int wait_time   = order->GetWaitTime();
-			int travel_time = order->GetTravelTime();
-			if (travel_time == 0 || wait_time == 0) return -1;
-			time += travel_time + wait_time;
+			if (!IsOrderUsableForSeparation(order)) return -1;
+			time += order->GetTravelTime() + order->GetWaitTime();
 		}
 	}
 	separation += time;

src/timetable_gui.cpp

@@ -534,14 +534,14 @@ struct TimetableWindow : Window {
 		}
 	}
 
-	static inline uint32 PackTimetableArgs(const Vehicle *v, uint selected, bool speed)
+	static inline uint32 PackTimetableArgs(const Vehicle *v, uint selected, bool speed, bool clear = false)
 	{
 		uint order_number = (selected + 1) / 2;
 		ModifyTimetableFlags mtf = (selected % 2 == 1) ? (speed ? MTF_TRAVEL_SPEED : MTF_TRAVEL_TIME) : MTF_WAIT_TIME;
 
 		if (order_number >= v->GetNumOrders()) order_number = 0;
 
-		return v->index | (order_number << 20) | (mtf << 28);
+		return v->index | (order_number << 20) | (mtf << 28) | (clear ? 1 << 30 : 0);
 	}
 
 	virtual void OnClick(Point pt, int widget, int click_count)
@@ -623,7 +623,7 @@ struct TimetableWindow : Window {
 			}
 
 			case WID_VT_CLEAR_TIME: { // Clear waiting time.
-				uint32 p1 = PackTimetableArgs(v, this->sel_index, false);
+				uint32 p1 = PackTimetableArgs(v, this->sel_index, false, true);
 				DoCommandP(0, p1, 0, CMD_CHANGE_TIMETABLE | CMD_MSG(STR_ERROR_CAN_T_TIMETABLE_VEHICLE));
 				break;
 			}