Blender to FSX drag chute visible code in modeldef.xml ?

[Melo965]

Building an aircraft in Blender2FSX and everything else works fine, but I can't get a simple drag chute to appear when the aircraft is on the ground
and the spoiler key (/) is pressed. I have a visibility attach point coded to the part, but it never appears.

Here is what the simple drag chute (Chute_vis) looks like:

And yes, the object has a material and texture already applied.

And here is the modedef code I am using:

<PartInfo>
<Name>Chute_vis</Name>
<!-- show part only when Aircraft is on ground and spoilers are in use -->
<Visibility>
<Parameter>
<Code>
(A:SIM ON GROUND, bool) 1 ==
(A:SPOILERS Position,percent) 50 &gt; ==
and if{ 1 } els{ 0 }
</Code>
</Parameter>
</Visibility>
</PartInfo>

Does this code look correct?
On the runway, and spoiler key on or off, the drag chute is never visible.

I also regenerated the MDL file with the chute_vis part and no visibility attach point, and it is always there, so the object is not the issue.

Even though the part does not move, do I need to animate it as well? This is the first time I have tried to use the visibility attach point for an object.

Please advise.

Best regards,
Melo965

 

[Hiroshi Igami]

Try &amp; instead of and

 

[Lagaffe]

Are you sure for this statement " (A:SPOILERS Position,percent) 50 &gt; == "
Personnally, I will use this one " (A:SPOILERS Position,percent) 50 &gt; = "

When I have some problèmes with a new code, I try with the more simple code that i can use as " (A:SIM ON GROUND, bool) 1 == ". If this one works, then I use a more complicate statement and I make an other test ....

 

[Hiroshi Igami]

Microsoft default codes in modeldef.xml is using "==" so I think it's correct using "=="

=============MS code in modeldef.xml

<PartInfo>
<Name>landing_light</Name>
<AnimLength>100</AnimLength>
<Animation>
<Parameter>
<Code>
(A:ELECTRICAL MAIN BUS VOLTAGE, volts) 0 &gt; if{
(A:LIGHT STATES, flags) 4 &amp; 0 ==
if{ 0 } els{ 100 }
d (&gt;L:LastLandingLightPosition,percent)
}
els{ (L:LastLandingLightPosition,percent) }
</Code>
<Lag>50</Lag>
</Parameter>
</Animation>
</PartInfo>

 

[Melo965]

Thanks all for the advice. Still figuring it out. I will simplify and work with one condition at a time, and once both are working will try to recombine them. Will also dive back into the SDK and check for syntax issues etc.

 

[Lagaffe]

@Hiroshi, "==" is perfectly correct but if you want use the expression ">=" (sup. or equal) we should use "&gt;=" and not "&gt;==" because in this last cae you are trying to code ">==" which is not in the RPN notation.

 

[Hiroshi Igami]

Yes I know that .
That post is to Lagaffe not you.

Also when I do a code debug , won't always re-compile.
I use a debug guage which shows the result on screen.
Put a code in and show the results.
Then development cycle will be much short and faster.
Once the code is done , include to the model side.

Those degug guages are included in my models sets.

 

[Melo965]

Got it working just as I want now. One key was to switch the Spoiler to SPOILERS HANDLE POSITION.

Here is the working code:

<PartInfo>
<Name>Test_Chute_3</Name>
<Visibility>
<Parameter>
<Code>
(A:SIM ON GROUND, bool) 1 == (A:SPOILERS HANDLE POSITION, percent) 1 &gt; &amp;&amp; if{ 1 } els{ 0 }
</Code>
</Parameter>
</Visibility>
</PartInfo>

Thanks everyone. Really appreciate the advice!