If I'm in base contact behind my own droidikas can I shoot over them at a unit without cover do they gain cover from the Droidikas?

Yes.

RRG, pg. 30 has the answer: the unit leader must touch a piece of terrain to make that piece of terrain not add its cover value (by obscuring) to the target unit.

Droidekas aren't pieces of terrain, so they add cover normally.

Newp

7 hours ago, Vector Strike said:

Yes.

RRG, pg. 30 has the answer: the unit leader must touch a piece of terrain to make that piece of terrain not add its cover value (by obscuring) to the target unit.

Droidekas aren't pieces of terrain, so they add cover normally.

No. Also read the following paragraph.

» If the attacking unit leader’s base is touching a piece of terrain, that piece of terrain cannot cause a mini in the defender to be obscured, unless line of sight from the unit leader to that mini is completely blocked.
» Ground vehicles, creature troopers, and emplacement troopers can provide cover. When determining whether a defending mini is obscured, treat any ground vehicle, creature trooper, or emplacement trooper minis as if they are pieces of area terrain.

6 hours ago, SailorMeni said:

No. Also read the following paragraph.

» If the attacking unit leader’s base is touching a piece of terrain, that piece of terrain cannot cause a mini in the defender to be obscured, unless line of sight from the unit leader to that mini is completely blocked.
» Ground vehicles, creature troopers, and emplacement troopers can provide cover. When determining whether a defending mini is obscured, treat any ground vehicle, creature trooper, or emplacement trooper minis as if they are pieces of area terrain.

😮

I stand corrected!