Subj : js error with synchronet
To   : Lesser Keys
From : Nightfox
Date : Sun Nov 03 2013 08:15 am

  Re: js error with synchronet
  By: Lesser Keys to All on Tue Oct 29 2013 00:24:58

 LK> I hope I'm posting this in the right thread. I am getting an error
 LK> running lbshell.

I think Synchronet-specific JavaScript questions are fine here, but a better
place to post such questions would probaby be the Synchronet JavaScript area on
DOVE-Net, since that message area is specific to Synchronet's JavaScript.

 LK> 10/28  01:27:30p  Node 2 !JavaScript  c:\sbbs\exec\load\graphic.js line
 LK> 118: TypeError: this.data[x + xoff][this.index + y + yoff] is undefined

 LK> I get this error sometimes using lbshell (I am playing around with it.)
 LK> What happens when I try to go from the far left (using lightbar) to the
 LK> right, by hitting the left arrow key, most of the time it works. Every
 LK> once in a while I get that error message, it causes sync to kill my
 LK> connection. I need to look in graphic.js and see what [this.index + y +
 LK> yoff] is. I am guessing it has something to do with the lightbar itself.

 LK> First off:) was "this.index" variable assigned? What should be assigned
 LK> to this variable? I haven't actually messed with the script for my main

I haven't used graphic.js and haven't used lbshell much, so I can only suggest
general things.  this.index may be assigned (you can search graphic.js to see
if it has been assigned), but the element in the this.data array referenced by
the given indexes might not exist..  In other words, the this.data array might
not have an element at the indexes x + xoff and this.index + y + yoff.
So my first guess would be that there may be a bug in the code for graphic.js
where it isn't inserting enough elements into the this.data array or it's not
calculating the indexes correctly.

Looking at the Synchronet CVS repository, it looks like both deuce and Rob
Swindell maintain lbshell.js (in the /exec directory), and mcmlxxix maintains
graphic.js (in /exec/load).  So perhaps you could let them know about this
error, and hopefully they'll take a look and maybe find a fix.

Nightfox

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