[Rails-devel] End game.

[brett l. <wak...@gm...>]

To allow the end game conditions to be detected, I'm changing the
return types to various cash transferring methods from void to
boolean.

This seems to be the easiest way of detecting the end of the game.

One thing to note:   I'm not including logic into CashHolder that will
prevent the transaction from completing, I'm simply inserting a check
that, if the transaction results in the cash value being reduced to
zero or below, we're returning a false value that can be looked for by
anyone calling the addCash() methods.

It is going to be up to certain CashHolders to detect whether they are
allowed to go negative or not.  I'm fairly certain, most of those who
should be doing this, are already doing it this way.


---Brett.