Accessing array datarefs

[realskudd]

I'd like to be able to read and write sim/flightmodel/weight/m_fuel, but with it being an array of floats, I'm not entirely sure how to make it work with xplm.

I've tried this:

        let fuel_weights: DataRef<f64, ReadOnly> = DataRef::find("sim/flightmodel/weight/m_fuel")?;

        let tanks = fuel_weights.get();
        let tank1 = tanks[0];
        let tank2 = tanks[1];

But it's not valid, given the f64 that .get() returns.

What's the right way to accomplish this? Is it even implemented yet?

[samcrow]

This is not obvious and there probably should be more examples, but it should work:

• Create a DataRef<[f32], ReadOnly> or DataRef<[f32], ReadWrite>
• That implements ArrayRead<[f32]>
• Call as_vec to get a Vec<f32> with a copy of the dataref values. If performance is important, you can instead use get with a pre-allocated buffer.

[JDeeth]

I'm just making a quick plugin that does one thing - sets sim/cockpit2/switches/landing_light_switch[0] to 1 on startup - and I'm having trouble figuring out how to do this. Looks like I get the existing values for the whole array as a vec, set the first to 1, then set the dataref with the modified vec. If that's the case it'd be great to have an example demonstrating it (and perhaps an API implementing an individual element setter?)