I've always disliked using the hidden mini feature
because I can't easily locate them afterward. I could
use the "Edit Miniatures Properties" button, but if
there's multiple instances of the same mini, there
isn't an easy and quick way to modify or find where is
located the mini.
With this patch the GM, and only the GM, will have all
the hidden minis draw to him as a slightly smaller
translucent rectangle outlined in grey. Also, the label
of the mini, if any, is written in the center of the mini.
Because the grey outline is slightly smaller than the
size of the mini, when the GM select the mini, he'll
still see the red outline drawn when a mini is selected.
I don't know if is having a mini hidden for both the GM
and the Player is a needed, but in my games I found it
more useful for me (GM) to know where are my hidden mini.
Here is two diff files of orpg/mapper/miniatures.py and
orpg/mapper/miniatures_handler.py, based on 1.6.3