Lee wrote
> Subject: Re: [Flightgear-devel] Nasal error with YASim
> aircraft having < 4fuel tanks
>
>
> On Friday 04 January 2008 19:59, LeeE wrote:
> > Hi all,
> >
> > I just noticed I was getting a Nasal error with a YASim
> aircraft I was
> > working on that had only three fuel tanks. The error is:
> >
> > Nasal runtime error: props.setDoubleValue() with non-number
> > at /usr/local/share/FlightGear/Nasal/props.nas, line 26
> > called from: /usr/local/share/FlightGear/Nasal/fuel.nas, line 93
> > called from: /usr/local/share/FlightGear/Nasal/fuel.nas, line 125
> >
> > I also got the same error when I tried an aircraft that has
> only one
> > fuel tank.
> >
> > I don't think that the problem is actually with the Nasal
> scripts but
> > with something else that creates four incomplete fuel tank nodes by
> > default at start-up. If there are < 4 fuel tank elements
> in the YASim
> > config the last tank's details are left incomplete and I think that
> > this is what the Nasal script is borking on.
> >
> > With a zero capacity dummy tank in the YASim config the problem
> > doesn't occur.
> >
> > I had a quick look in options.xml & preferences.xml, aw well as my
> > .fgfsrc but didn't find anything - can't think of anywhere else to
> > look:(
> >
> > LeeE
>
> I thought I'd re-post this as no-one seems to have noticed it and it
> seems like quite a big problem to me.
>
> I also started testing the FG aircraft that have < 3 fuel tanks
> defined and found the same problem with the following aircraft
> before I decided that there wasn't any point in testing all of
> them:
>
> 737-300
> 747
> a24-yasim (A24-Viking)
> A320
> a4
> A6M2
> ...
>
> Out of the candidates I tested only the a4f, which appears to be
> based on the a4, didn't have the problem - I haven't looked into
> this discrepancy yet.
>
> That isn't even all of the 'A's though and one of them, the A320, is
> a JSBSim aircraft. With these aircraft it's not possible to change
> the initial fuel loads via the menu and there are no values in the
> tree for the /consumables/fuel/total-* nodes.
>
> Can anyone else confirm this problem on the OSG cvs branch?
>
The A4F doesn't use the generic fuel script (or didn't last time I looked)
so that might explain why it still works.
Vivian
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