5 replies to this topic

[AdamJ]

Hi all,

I'm having trouble getting the callback script to run properly.  It's
suppouse to duplicate a few nodes when the user presses the button.
Problem is that the callback script doesn't seem to finish unless
I type in the texport 'end'.  What I'm after is

for i = 1 to 4
opcp node_0 node $i;
end

but when trying to run this from callback the 'end' has no effect.
Is there another way I should be doing this?  Any tips and
suggestions are appreciated.

Adam

[AdamJ]

.. in case anyone is interested.. I got it working by including the scripts
in the HDA and then opdef them in the callback line.  Seems Houdini
had a problem with having the entire script as one line in the callback
field.

[old school]

Tip and suggestion? How about trying the help in the textport for proper if useage.

Here it is for you:

/ -> help if
if
        Usage:  if (condition) [then]

        The if construct.  If the condition is met, then the contents
        of the if statement will be executed.  An endif statement is
        required to terminte the if clause.  For example:
            if ( $F == 1 ) then
                echo Frame One
            else
                echo Another frame
            endif
        Note:  In the current implementation, the statements for the
        if clause must occur on separate lines.  That is, statements
        like "if ($F == 1) echo Frame One" will not work.


As you can see, endif is the terminator for the if statement in hscript.

[AdamJ]

yep that was the problem .. the if/for/end statements have to be on
seperate lines.. read the 'for' help, didn't read 'if' help ...doh!  

[michael]

Quote

...in the HDA and then opdef them in the callback line

are the nodes duplicated in the hda?...or just in the houdini session?

[AdamJ]

They are getting copied in the houdini session.