(svn r5376) - Fix: Changed error message when trying to build a CTOL aircraft at a helidepot/helistation to "Airport has no runway". (Thanks to MeusH). Osprey can now be built at helidepot/helistation. (Thanks to mart3p).

aircraft_cmd.c

@@ -219,8 +219,8 @@ int32 CmdBuildAircraft(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
 
 	// prevent building of aircraft in helidepot/helistation
 	st2 = GetStationByTile(tile);
-	if ((avi->subtype != 0) && (GetAirport(st2->airport_type)->acc_planes == HELICOPTERS_ONLY)) {
-		return_cmd_error(STR_ENGINE_NOT_BUILDABLE);
+	if ((avi->subtype & AIR_CTOL) && (GetAirport(st2->airport_type)->acc_planes == HELICOPTERS_ONLY)) {
+		return_cmd_error(STR_AIRPORT_HAS_NO_RUNWAY);
 	}
 
 	unit_num = (HASBIT(p2, 0) == true) ? 0 : GetFreeUnitNumber(VEH_Aircraft);

lang/english.txt

@@ -2828,6 +2828,7 @@ STR_REPLACE_REMOVE_WAGON_HELP                                   :{BLACK}Make aut
 STR_REPLACE_ENGINE_WAGON_SELECT                                 :{BLACK}Replacing: {ORANGE}{SKIP}{SKIP}{STRING}
 STR_REPLACE_ENGINE_WAGON_SELECT_HELP                            :{BLACK} EXPERIMENTAL FEATURE {}Switch between engine and wagon replacement windows.{}Wagon replacement will only be done if the new wagon can be refitted into carrying the same type of cargo as the old one. This is checked for each wagon when the actual replacement takes place.
 STR_ENGINE_NOT_BUILDABLE                                        :{WHITE}Engine is not buildable
+STR_AIRPORT_HAS_NO_RUNWAY                                       :{WHITE}Airport has no runway
 
 STR_ENGINES                                                     :Engines
 STR_WAGONS                                                      :Wagons