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From: Darrel Hoffman on 31 Mar 2008 20:00
Is there a way to force the pickup of a moveable sprite via code? Let's
explain the problem with a little diagram here, (pardon my horrible ASCII
art, which is probably font-width-dependant). I've got a small icon (A)
inside a larger rectangle (B), like so:
____________
| ____ |
| |_A_ | B |
|___________|

Now, icon (A) is a moveable sprite, and can be dragged into a certain
location elsewhere on the stage. (B) is a box with a bit of descriptive
text regarding icon (A). (There are actually 4 sprites involved, but (A) is
the only one that moves.) What I want to do is make it so that clicking
anywhere within box (B) will cause the icon (A) to jump into your mouseLoc
and then be draggable, just as if you'd clicked directly onto (A). Now,
I've put script onto the box (B) like so:

on mouseDown me
sprite(A).loc = the mouseLoc
pass
end

This indeed causes the sprite to jump under the mouseLoc, but it won't
drag - you have to click again in order to pick it up. I tried adding a
"sprite(A).mouseDown()" to trick it into believing there was an actual mouse
event, but this had no effect. (This technique DOES activate any script
MouseDown events on sprite (A), but it doesn't cause it to be draggable.)
The "pass" command doesn't seem to be doing anything here either. (In fact,
I've almost never gotten that thing to work properly - it really doesn't
seem to do what the docs say it does.) Is there some way to cheat the
computer into thinking you clicked on the sprite when you really didn't?


From: Lukewig on 31 Mar 2008 21:36
Hi,

I don't think you can pass the 'click to start drag'. Its pretty easy to do it
in lingo though.

-- Behaviour on the clickable sprite (B)

on mouseDown me
targetSprite = A
tmp = script("FollowMouse").new(targetSprite)
end

-- Parent Script "FollowMouse"
property mySprite

on new (me, whatSpriteToChase)
mySprite = sprite(whatSpriteToChase)
mySprite.loc = the mouseLoc
mySprite.scriptInstanceList.append(me)
end

on enterframe (me)
if the mouseDown then
mySprite.loc = the mouseLoc
else
mySprite.scriptInstanceList.deleteOne(me)
end if
end



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