Programming Question please help with engine flicker effect

[Mr Martian]

i am coding a simple vessel but i want to give it an engine flicker effect, like the one seen on the XR-2. i was wondering what code i should use. any help would be much appreciated.

 

[dbeachy1]

Take a look at VESSEL::AddPointLight in the Orbiter SDK docs. Just add a PointLight at each main engine and vary the intensity each engine's LightEmitter based on the current throttle level. :tiphat:

 

[Izack]

Take a look at VESSEL::AddPointLight in the Orbiter SDK docs. Just add a PointLight at each main engine and vary the intensity each engine's LightEmitter based on the current throttle level. :tiphat:

That would create a solid, unflickering light. For an exhaust flickering effect, it's part of the EXHAUSTSPEC struct, specifically the 'modulate' attribute.

 

[Urwumpe]

That would create a solid, unflickering light. For an exhaust flickering effect, it's part of the EXHAUSTSPEC struct, specifically the 'modulate' attribute.

Isn't that a beta2012 feature of the API?

 

[dbeachy1]

I don't believe so -- I just checked the XR source and the EXHAUSTSPEC structure's modulate field is set in the code, which runs under Orbiter 2010 P1.

Thanks, Izack, for the reminder. :tiphat:

 

[Izack]

Isn't that a beta2012 feature of the API?

Nope, it's existed at least since 2010, and is in that SDK's documentation.

 

[Urwumpe]

Nope, it's existed at least since 2010, and is in that SDK's documentation.

Seem to have always missed that part of the P1 SDK.

 

[Izack]

Seem to have always missed that part of the P1 SDK.

It's easy to miss if you aren't looking for it. I had happened to be wondering how the Deltaglider's light-flicker effect was achieved after seeing it in the new UCGO Arrow, and, finding nothing operating on the exhaust in the DG source, went to Class List -> EXHAUSTSPEC. Hey, what do you know, it's built in!