<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div></div><div><br></div><div><br><div><div>On Dec 11, 2013, at 11:11 AM, Emily Higgins <<a href="mailto:erphiggins@gmail.com">erphiggins@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">I can see how to pass a variable between the methods, but how can I pass it between an event listener and a method? I want to, for example, keep track of number of mouse clicks during a game. How can I do that? I can't create a parameter in an event listener.... I think I am missing a step or a piece of understanding in figuring out how to manage this.<div>
<br></div><div>Thank you</div><div>Emily Higgins</div><div>Boothbay Region High School</div><div>Boothbay, Maine</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Dec 11, 2013 at 1:17 PM, Don Slater <span dir="ltr"><<a href="mailto:dslater@andrew.cmu.edu" target="_blank">dslater@andrew.cmu.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; position: static; z-index: auto;">Alice 3 does not really support global variables in the same way as Alice 2. Alice 3 is Java-based, with a strong sense of scope for variables.<br>
<br>
It is possible to create a variable that belongs to the Scene class, that can be used by any other methods (functions and procedures) written on the Scene class. But If I am writing a method for the Penguin class, that method does not have access to the variable created in the Scene. That Scene variable must be passed as a parameter to the Penguin method that would like to use it, and a function of the Penguin class must return a value to for updating the Scene variable.<br>
<br>
Please let me know if you have any other questions.<br>
<br>
Later,<br>
Don Slater<br>
<div class="HOEnZb"><div class="h5"><br>
On Dec 10, 2013, at 3:04 PM, Robert Durtschi <<a href="mailto:robert.durtschi@gcsu.edu">robert.durtschi@gcsu.edu</a>> wrote:<br>
<br>
> I'm guessing it's the same for Alice 3; In Alice 2.x variables created as properties of the World object (top object in the object-tree) could be seen/manipulated by all other objects.<br>
><br>
><br>
> Hello All -<br>
> I am trying to iterate a counter in an event listener, so that if the user<br>
> clicks on four objects, an action occurs. How can I do this? I also<br>
> can't figure out how to make a global variable that can be accessed<br>
> throughout the program.<br>
><br>
> Emily Higgins<br>
> Boothbay Region High School<br>
> Boothbay Harbor, Maine<br>
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