Re: [Flightgear-devel] Helipad thresholds

[James T. <ja...@fl...>]

> On 25 Jul 2023, at 19:16, TheFGFSEagle <the...@gm...> wrote:
> 
> I didn't quite follow the discussion - are single-ended runways (i.e. helipad "thresholds") supported now, or  are they not needed anymore, or what ?

Helipad thresholds are not supported (and never have been). Single ended runways are mostly supported for a long time, but I think the thresold.xml syntax might not currently support them : could easily be fixed if someone cares.

(I’ve forgotten exactly where we do and don’t support single-ended runways in the code, it looks like it should mostly work, but I don’t know if we have any in the data…. probably some unit tests need to be added for these cases)

The major problem David had, and which Florent has fixed, is us picking a threshold.xml in say E/G/P/EGPH.threshold.xml which corresponds to FGData/Airports/apt.dat, but because a custom scenery overrides the definitions for EGPH, the threshold data is wrong. With the recent change, we only use the XML data if its path is ‘ahead’ of the apt.dat in the scenery search paths, not ‘behind it’, so the scenery search path order works out as users would expect.

Kind regards,
James