Listen for messages in FrontScripts

Pete pete at mollysrevenge.com
Tue Jan 3 15:22:26 EST 2012


I think it's time to refer to the message path bible - Richard Gaskin's
great article at
http://www.fourthworld.com/embassy/articles/revolution_message_path.html
Pete

On Tue, Jan 3, 2012 at 12:01 PM, Todd Geist <todd at geistinteractive.com>wrote:

> On Tue, Jan 3, 2012 at 10:09 AM, Bob Sneidar <bobs at twft.com> wrote:
>
> > If I am not mistaken, sent or dispatched messages are always sent to the
> > card if another target is not specified,
>
>
> hmm, Not what I see
>
> Send, dispatch, and call use the current object as the target if none is
> specified. It would only be the card if the card was the object sending the
> command. Throw this in a button,
>
> *on* mouseUp
>
>   *send* test
>
> *end* mouseUp
>
>
> *on* test
>
>   *put* the target
>
> *end* test
>
>
> When you click the button you will see that the message is handled by the
> object.
>
>
> If you send a message using *Any* form (send, dispatch or call) and do not
> specify a target, then the object that is sending (or  calling or
> dispatching)  the message is the target.  Of course a front script is
> inserted before the target and can handle the message, BUT it is not "the
> target".
>
>
> Here is my current understanding of the differences in Send, Dispatch, and
> Call. If anyone could correct me, I would appreciate it.
>
>
> I think dispatch does switch contexts.  It send the message to the object
> and it is processed along the normal message path.  It does have a special
> use of the "me" object which can refer to a behavior. But other than that I
> am pretty sure that references are evaluated in the context of the
> receiving object, not the sending one.
>
>
> Send is different because messages not handled but the target DO NOT
> continue down the message path.  Send does NOT resolve "me" to the behavior
> script if there is any. Like Dispatch the context is the receiving object,
> not the sending one.
>
>
> Call is really weird. Context is the CALLING object not the Sending object.
> And messages that are not handled by the target pass down that object's
> message Path.
>
>
>
> Thanks
>
>
> Todd
>
> --
> Todd Geist
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-- 
Pete
Molly's Revenge <http://www.mollysrevenge.com>



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