Constrain To Sprite doesn't like rotating sprites...

Question

I have a bunch of movable sprites that I'd like to constrain
to a box
(basically just the whole stage). Problem is that they also
have the
ability to rotate, only at 90 degree intervals, though.
They're relatively
rectangular shapes (puzzle pieces). But when you rotate them
with the
Constrain to Sprite behavior on them, their aspect ratio gets
all screwed
up, and then sometimes they start moving on their own until
they hit an
edge, quite odd behavior. Is there a way to make this
behavior work with
sprites that can be rotated without these glitches? Or is
there a better
alternative? I tried writing my own contstrain script, which
worked except
that you could still drag the sprites off the edge, they'd
just keep
bouncing back and forth until you released the mouse button.
Also not good
behavior.

Answer 1

Are you dragging these sprites around or are you moving them
in some
other way?
If you are dragging the sprites around then you can use
sprite(X).within(Y) to keep your sprites from leaving the
stage area.
1. Make a borderless empty toolbox shape sprite that is
slightly smaller
than the whole stage. Make is sprite 1.
2. constrain each sprite to that sprite.
3. use a simple behavior like this to control the moving of
each sprite:
property thisSprite
property animateMe
on beginSprite me
thisSprite = me.spriteNum
animateMe = false
sprite(thisSprite).constraint = 1
end
on mouseDown me
animateMe = true
end
on mouseUp me
animateMe = false
end
on exitFrame me
if animateMe then
sprite(thisSprite).loc = the mouseLoc
end if
end
Rob
Rob Dillon
Adobe Community Expert
http://www.ddg-designs.com
412-243-9119
http://www.macromedia.com/software/trial/