Are you saying you want to be able to pick A, even if it's being obscured by B,C,D?
If so, you'll have to hide B,C,D before doing the pick, if you dont want to make B,C,D unpickable.
Alternatively, if you just want to pick from the centre of the screen, you could use EntityVisible(cam,A), ensuring that B,C,D haven't been set as obscurers when setting their pick mode.
If so, you'll have to hide B,C,D before doing the pick, if you dont want to make B,C,D unpickable.
Alternatively, if you just want to pick from the centre of the screen, you could use EntityVisible(cam,A), ensuring that B,C,D haven't been set as obscurers when setting their pick mode.