- Moved property testing, so that it happens before any propertySet events are
dispatched. In the previous version, testing happened while processing the
set event on the server - but since by that time client events have already been
sent, it introduced the possibility of short-lived inconsistencies between client
and server data models.
- Introduced a separate EZ API call for test and set - not only does it perform
the test, but unlike regular set, it does not cache the new value ahead of time.
Instead the new value will have to arrive from the server, at some future point.
- Trimmed PropertySetEvent and other handlers back down - they don't need to
carry any of the test info around, after it's already been performed. Also
cut redundant testing on the clients.
git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@195 c613c5cb-e716-0410-b11b-feb51c14d237
it's atomic in the sense that a single server event will test the variable,
and only set it if the previous value was null (i.e. didn't exist).
This allows for a level of elementary synchronization between the clients.
The new function on EZGameControl is:
_gameCtrl.testAndSet (propertyName, newValue[, index])
I hoped to generalize this to test against arbitrary values, but that's
significantly harder, since properties accept numerous types as values,
and those can have different representations on the client and the server.
So it remains a check against null until we need to generalize it. :)
git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@193 c613c5cb-e716-0410-b11b-feb51c14d237
Michael Bayne