AI Base Defense Drone ( / Modifying the Pirate Drone Script )

So I've been looking at drone defense scripts. I found a couple on here and workshop, but they rely on sensors.

The KSH pirate drone script has a GetNearestPlayer() for it's remote, and I understand this is only available for the pirate faction.

Is there a workaround for us to use? Maybe get hostile grid, or hostile player, anything like that to be usable on DS?