Value for Undefined properties

Module Design
1

When a piece is clicked, its property Selected = true. If the piece is moved using a SendToLocation trait, the property Selected = ???. It’s not false; How does one test these kinds of properties? Selected = null?

What does Vassal do here?

[i]OldLocationName[/i]
[i]OldBoard[/i]
[i]OldZone[/i]
[i]OldX[/i]
[i]OldY[/i]

Thanks,
Flaney

2

try Selected != true

vassalengine.org/wiki/Faq_mo … ounters.3F

3

Not to hijack this thread, but I have a related question that has been perplexing me.

In several modules, the entire board is set up as a multi-zoned grid. Anything that is not found in a defined zone is considered “offboard” and the location is listed as such when you hover over the piece (assuming the messages over/under a piece will report a location).

  • Can “offboard” (or != offboard) be used as a legitimate location when testing conditional statements?
  • If not, can pieces not contained in a defined zone be tested against LocationName (or Zone) = null?
  • In a general sense, can “null” be used as a legitimate testing item in conditionals? If so, in what circumstances?

I’ve found situations where testing against “offboard” or “null” would be very handy, but I can’t seem to get that type of comparison to function properly.

My apologies if this really should be a separate thread. ADMIN: please feel free to take that action if deemed necessary.

Thanks, everyone!
Rommel14