Hi,
On Thu, Nov 25, 2010 at 03:28:01AM +0100, András Murányi wrote:
Cool, i was wandering around in the rj lib but i couldn't find how this thing works. Can you just tell me in a nutshell please?
yeah, it's a bit convoluted, to make it play nice in the background without a user ever having to see a single sssad object ...
Anyway the real interesting feature you will like is not so much the "saveonly" message but local saving which is enabled by adding something like "$0" as second argument to your [sssad] objects. Such local sssad objects cannot be controlled via sending to "SSSAD_ADMIN" anymore! Instead you have to send to "$0-SSSAD_ADMIN".
In rj, the [u_sssad] objects are copies of sssad.pd and they are hidden in [u_dispatch] objects. These objects are in almost every rj abstraction and handle two things: Dispatching of "tagged messages" from an inlet to local receivers and saving the sssad-parameters.
For example a [u_dispatch $0 freq] will turn messages like "freq 440" into a "440" sent to [s $0-freq] and it will also save "440" into a local(!) sssad-parameter called "freq" that is local to the value of $0.
Now a second utility abstraction, [u_loader] will build a bridge between these local sssads with their $0-SSSAD_ADMIN receivers and two global receivers called RJ_SCENE_LOAD and RJ_SCENE_SAVE. Actually these are seldomly used in rjdj scenes.
A typical idiom to get the state of all sssads in one abstraction is to send "save" to the $0-SSSAD_ADMIN in ony abstraction, then collect all the responses into messages and save these into message boxes. This is handled inside of [u_loader] and can be seen all over the rj library, expecially in Andy's synths like s_ejun or s_cwc.
If this sounds too complicated and you want to just have a presettable abstraction, you just need to do this:
- add a [u_loader abstractionname-$1 $0] object
- add a [u_dispatch $0 parametername] object for every parameter
- daisychain all [u_dispatch] with connections and connect the first one to an inlet.
3.1) Optionally: Connect [u_loader]'s outlet to an outlet and route incoming "save" messages to its inlet to save settings in the parent patch, e.g. with [u_cocollect] 4) Call you abstractions with unique tags as first argument
Now try sending stuff to RJ_SCENE_SAVE and RJ_SCENE_LOAD and to the inlets of your abstractions.
Ciao
Frank Barknecht Do You RjDj.me? _ ______footils.org__