Scratch

The easiest way is to use a variable, but it may cause a ton of variables for a lot of sprites. Use, for button 1:

when [button 1] clicked
if <(motion)=[1]>
set [motion v] to [0]
else
set [motion v] to [1]
end

and for the sprite 1:

when gf clicked
forever
if <(motion)=[1]>
your animation goes here
end
end

Hope this helps.

Last edited by kayybee (2012-10-09 00:39:35)

Ah, you want OOP. Well, though luck: Scratch doesn't have great OOP. It doesn't even have data structures or (as of 1.4) procedures. Scratch has no form of "mind control", you cannot control a sprite from another sprite. You can however read data, which is actually enough (even though the code is ugly). Think of it as a server-client code: you cannot have Python running client-side, but you can have JS querying the Python client-side via XHR; and though it's uglier, it's also simpler in a couple of ways.

To solve your issue, the actual event you want is a broadcast; which is like a customized event which can have multiple handlers. So you should do something like this:

when [button v] clicked // on button sprite
broadcast [play/pause v]

when gf clicked // on animation sprite
set [animating? v] to (-1) // OFF

when I receive [play/pause v] // on animation sprite
set [animating? v] to ((animating?) * (-1)) // switch the state of the sprite

when gf clicked // on animation sprite
forever if <(animating) = (1)> // if ON
next costume // or whatever: knock yourself out!

Here, you don't need to specify the target, since any sprite can handle the "play/pause" event. If you absolutely need to specify the sprite, change the event name for each sprite, like "play/pause: Darth Vader" on one sprite and "play/pause: Luke Skywalker" on the other.

I hope that helped, good luck! 

Last edited by Hardmath123 (2012-10-09 02:32:53)