What happens at 200m?

[NavyFish]

For my Docking Port Alignment Indicator mod, I'm trying to allow a targeted docking port to remain targeted once it's more than 200m away from the active vessel.

As far as I can tell, at 200m exactly, KSP switches the active target to the targeted vessel's root node. I can programmatically re-target the Docking Port, but an instant later KSP switches the target back to the root node.

Quite simply - how and where is this retargeting occurring, and how can I override/intercept that behaviour?

Edited October 27, 2013 by NavyFish

[kujuman]

A simple (though not optimal) potential solution would be to re-target the docking port every frame instead of once, assuming that KSP will let you make the switch once.

[NavyFish]

A simple (though not optimal) potential solution would be to re-target the docking port every frame instead of once, assuming that KSP will let you make the switch once.

Indeed, this does work. It seems so horribly hackish, though (for example, the debug log becomes absolutely overwhelmed with spam), that I decided not to publish it in my latest release.

Not that I'm opposed to hacks , but I am concerned with second- or third-order consequences of that particular approach.