[Flightgear-scenery] Setting up weather in tutorials

[Wayne B. <kil...@co...>]

I was working on an unrelated issue and got distracted by yet another 
issue and switched course mid stream.
That uncovered a potential problem with the tutorials for the c172p and 
the weather system.

It appears if I have Advanced weather - METAR selected in the 
QT-Launcher and load at a random airport, then run the Amphibious 
takeoff tutorial (maybe others as well), the tutorial is written to 
change the METAR mode to Fair Weather using the following initialization
<set>
     <property>/environment/weather-scenario</property>
     <value>Fair weather</value>
</set>

What appears to be happening is it is changing the property and thus the 
field in the GUI but I don't think it is changing the actual mode.
Worse, depending on where your original starting airport is it can also 
create some really bad visuals with the clouds, but not always.

I am not the original author of most of the code and used existing 
examples to create these tutorials. This issue could potentially be in 
every tutorial in the c172p and any other tutorial throughout the 
aircraft base where the developer used these tutorials as reference.

 From USCC METAR mode to the tutorial at PHNL I get cloud formations 
like this
http://i.imgur.com/2aCWKDy.png
http://i.imgur.com/UC2EUo0.png

 From KEQA METAR mode to the tutorial at PHNL I get this
http://i.imgur.com/pY2phJK.png

Is there a proper way in the tutorial code to change the weather mode in 
Advanced weather or would it be best not to attempt to change the 
weather mode at all in the tutorial?

Thanks,

Wayne