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From: dlugose@ecsvax.UUCP (Dan Dlugose)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: get object<s> at loc x,y
Message-ID: <7218@ecsvax.UUCP>
Date: 21 Jun 89 14:21:40 GMT
References: <9568@boulder.Colorado.EDU>
Reply-To: dlugose@ecsvax.uncecs.edu.UUCP (Dan Dlugose)
Organization: UNC Educational Computing Service
Lines: 23

In article <9568@boulder.Colorado.EDU> rieman@tigger.colorado.edu (John Rieman) writes:
>Is there any way in hypertalk to get the types and id's of objects
>covering a specific location?  For example, I'd like to write
>
>   put objects at 200,300 into msg

   I would speed it up by an opencard handler that puts the list of
objects and their rects into a hidden field, so that a function call
like putObjects 200 300  would quickly return the requested info.
   It would be more complicated to keep track of newly created or
moving objects, but still not all that difficult.
   So far I've been disappointed that more HC programmers haven't
taken advantage of features of HC available though use of animation,
message passing, dynamic attribute setting, object oriented features,
and dynamic script modification.  Your question reminded me of several
ideas I haven't done much with yet, like buttons that move, communicate
with other objects, interact with their local environment, and use
functions and lookup tables to make decisions.
   Also, since a subset of Logo has been implemented in Hypertalk,
let's have more interactive control of objects in stacks!

   Dan Dlugose
   UNC Edu. Computing Service