P3D Javascript Interface & HTML5

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Homer
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P3D Javascript Interface & HTML5

Postby Homer » Sun Nov 08, 2020 12:19 pm

Hi, does anyone know where I can find more info on building panels and addons for P3D v5.1 using HTML5 and Javascript Interface? The SDK documentation is very scarce, maybe because it's a new feature. And google doesn't give any meaningful results.
Using the info provided in the SDK docs, i can't get to work even the simpliest example, like "var alt = VarGet("Indicated Altitude", "feet");" doesn't return any results. I would be thankful for any info or suggestions for where to look for one.

gaab
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Re: P3D Javascript Interface & HTML5

Postby gaab » Sun Nov 15, 2020 12:13 pm

I second this question !

Any clue will be welcome !

Gérard

gaab
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Re: P3D Javascript Interface & HTML5

Postby gaab » Mon Nov 23, 2020 1:42 am

Using the info provided in the SDK docs, i can't get to work even the simpliest example, like "var alt = VarGet("Indicated Altitude", "feet");" doesn't return any results. I would be thankful for any info or suggestions for where to look for one.
I found the hard way that the example is wrong. You need to specify the variable type !

var alt = VarGet("A:Indicated Altitude", "feet");
var myloc = VarGet("L:mylocVar", "bool");

Still wondering how to set local vars.

Even if (L:mylocVar,bool) is non 0 in XML gauge, VarSet("L:mylocVar", 3); will give back 0 when VarGet("L:mylocVar", "bool");


Gérard

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Homer
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Re: P3D Javascript Interface & HTML5

Postby Homer » Sun Dec 13, 2020 10:07 am

You need to specify the variable type
Seems like they are using TypeScript behind the scenes. Thanks for the clues!

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Beau Hollis
Lockheed Martin
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Re: P3D Javascript Interface & HTML5

Postby Beau Hollis » Mon Jan 18, 2021 3:46 pm

The type conversion might be more restrictive for JavaScript. Under the hood, L-vars are all stored a doubles. I'd suggest trying a numeric type.
Beau Hollis
Prepar3D Software Architect

gaab
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Re: P3D Javascript Interface & HTML5

Postby gaab » Tue Jan 19, 2021 3:20 pm

The type conversion might be more restrictive for JavaScript. Under the hood, L-vars are all stored a doubles. I'd suggest trying a numeric type.
I tested a very simple script

Code: Select all

var visual = VarGet("L:YokePilot" ,"number"); if (visual != 0) { document.getElementById('yoke').innerHTML = 'Hidden'; } else { document.getElementById('yoke').innerHTML = 'Visible'; }
The YokePilot is changed in an XML gauge, and I get the result expected.

Next step is to setup that variable

Code: Select all

function changeVisible(newColor) { if (newColor == 'red') { VarSet("L:YokePilot", "0"); document.getElementById('yoke').style.color = newColor; } if (newColor == 'blue') { VarSet("L:YokePilot", "1"); document.getElementById('yoke').style.color = newColor; } }
In order to insure that the code is working, the display is set inside the color test...
Which is shown as expected.

As soon as we VarSet("L:YokePilot", any value), L:YokePilot is reset to zero (XML and Varget).

Nota : I tried a lot of VarSet variations
- VarSet("L:YokePilot", "1")
- VarSet("L:YokePilot", '1')
- VarSet("L:YokePilot", 1)
- VarSet("L:YokePilot", "number", "1")
I can say that something happens, as L:YokePilot is reset to zero...

Any other suggestion ?

Gérard

federico.sucari
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Re: P3D Javascript Interface & HTML5

Postby federico.sucari » Sun Jan 24, 2021 12:17 pm

I also want to understand how VarSet works. If it works?

VarSet needs to be functional and appreciate any insights on this.

If not, is there any way to communicate HTML code and C code other than a L:VAR and the VarGet/VarSet functions?

Thanks!

Federico


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