Line of sight

[Mandoble]

No and yes,
you may assign a script to be executed every few fractions of second that gets in _this the current position of the particle, using this position you may try to detect nearby houses. But you may do the same creating a rect line "calculated" from the placement of your lightsource, if getPosASL fails when executed over a tower or a building, just add a parameter to your script for altitude correction, that should be just the height of the tower.

[Mr.Peanut]

I tried adapting the LOS function from my binotarget and could not get it to register a building, which is why I thought we were stuck with boundingBox. Do particles with a velocity pass right though buildings, vehicles & walls, or do they self destruct?

[Mandoble]

Particles pass through everything, even mountains.

[Mr.Peanut]

Must be neutrinos.

Edit: Thanks to fasad on the BI forums, I think I have a fix! Woo hoo, can't wait to test it!