Can I detect the absence of something in rules?

[Sévan Kazandjian]

Hi everyone,

A small question that is bothering me :

Is it possible to detect the absence of something in the rules?

In WinConditions, I can do

"no Player" to achieve this

But in the rules, I would like to do something like :

[no Player] -> message "game over"

But obviously this will trigger if *one* case has no Player, not if 0 players are present on board.

Is there an elegant way to do this that I'm missing, or any game that uses some similar thing?

Thanks in advance,
Sevan.

[Stephen Lavelle]

There's a multi-step way to do it - let's there theres an object that there's only one of in the level, PLACE, and there's a temporary token object, TOKEN

[ PLACE ] -> [ PLACE TOKEN ]  (create a single token)

[ PLAYER ] [ TOKEN ] -> [ PLAYER ] [ ] (removed token there's a player)

[ TOKEN ] -> message "game over" (if the token is still there, there must be no player)

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[Sévan Kazandjian]

Nice technique, thanks,
That'll come handy.

S.