[etoys-notify] [JIRA] Commented: (SQ-724) degreeTan(90) causes Etoys to "spin" sometimes even CMD-. does not interrupt it

Bert Freudenberg (JIRA) tracker at squeakland.org
Fri May 27 10:58:06 EDT 2011

    [ http://tracker.squeakland.org/browse/SQ-724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=39853#action_39853 ] 

Bert Freudenberg commented on SQ-724:

90 degreeTan is 8.165619676597685e15. So the script is roughly equivalent to "self forward: 8165619676597686." I wonder why the fence does not work? It should restrict movement using the forward-by tile. Maybe it exceeds the float precision (e.g. 1.0e50 + 1 = 1.0e50). Also, of course, the damage rectangle should not be larger than the actual Display bounds.

> degreeTan(90) causes Etoys to "spin" sometimes even CMD-. does not interrupt it
> -------------------------------------------------------------------------------
>                 Key: SQ-724
>                 URL: http://tracker.squeakland.org/browse/SQ-724
>             Project: squeakland
>          Issue Type: Bug
>          Components: etoys
>            Reporter: Stephen Thomas
>             Fix For: etoys 2011
>         Attachments: debug.log, SQ-724.001.pr
> To recreate, try and go forward by degreeTan(90), you may have to try it a couple of times to getting the prolonged spinning.
> I had one script where I can to ForceQuit Etoys other times CMD-. got me out or it just finished and moved me 
> FYI, Divide by 0 throws a ZeroDivide exception.

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