Could someone explain the "Callwith();" action?

nautama · August 11, 2015 at 5:46 PM

I'm having a lot of trouble understanding exactly what the Callwith(); action does, but I have a strong feeling I could make use of it, I've looked through the forum and the documentation and still don't get it, there's not much about it. Any help would be greatly appreciated!

Alberto.

sachagriffin · August 11, 2015 at 5:53 PM

for hotspots and plugins with the actions like get(name) it gets the hotspots name.

if you do hotspot[test].testaction();
it doesn't have the proper scope to resolve "name".
So you go callwith(hotspot[test],testaction);
so that the scope is relative again.

nautama · August 14, 2015 at 5:23 PM

Thank you very much for your prompt response, sachagriffin, as always you are very kind and knowledgeable. I haven't really understood completely, is it something like: hotspot[get(name)].textaction();???

could you give a specific example of where this could come in handy?

Taurus · August 14, 2015 at 5:50 PM

Hi,
no special significance, this function has no
instead

Code

<action name="action1" >
   action2(%1,%2));
</action>
<action name="action2" >
   tween(hotspot[%1].alpha, %2);
</action>

You can write

Code

<action name="action1" >
   callwith(hotspot[%1], action2(%2));
</action>
<action name="action2" >
   tween(alpha, %1);
</action>

Serge

sachagriffin · August 14, 2015 at 6:30 PM

Quote from nautama

Thank you very much for your prompt response, sachagriffin, as always you are very kind and knowledgeable. I haven't really understood completely, is it something like: hotspot[get(name)].textaction();???
could you give a specific example of where this could come in handy?

<hotspot name="box onclick="tween(alpha,0);doawholebunchmore stuff();"

so if you have another function and you want to tween boxes alpha and doawholebunchmore stuff(), but instead of

Code

<action name="test">
tween(hotspot[box].alpha,0);
doawholebunchmore stuff();
</action>

You could do

hotspot[box].onclick();

No no you can't because the alpha has lost its scope.

so its
callwith(hotspot[box],onclick);

plus actions called from layers and hotspots oftentimes use the short cuts [ x, y, name ]etc to do effects. just calling hotspot[box].onclick() wouldn't work correctly unless you replaced all your shortcuts with the full name of the hotspot.

Participate now!