Hi guys,
I’m migrating some stuff to AS3 and have come to a dead end with this one.
Here’s 2 examples to help you understand the problem: They present the difference between the AS3/AS2 implementation.
http://users.ntua.gr/el02173/prevFrame.zip
What you see is this: on the stage there’s a movieclip called ball, which contains a 20-frame scale tween of another movieclip, called colorchange which contains a 40-frame color tween of a circle.
So, I’ve got sth like this: root–> ball (scale tween of colorchange - 20 frames) --> colorchange (color tween of a shape - 40 frames)
So, suppose I want to use ball as a button with a rollover effect that plays backwards… In AS2 I used the following code to enable the scale tweening (ball plays forwards when the mouse is over the shape, and backwards when the mouse is elsewhere):
ball.onEnterFrame = function() {
if (ball.hitTest(_root._xmouse, _root._ymouse, true)) {
ball.nextFrame();
} else {
ball.prevFrame();
}
};
Note that mc colorchange plays without any problem continuously. Check the file as2prevFrame.swf in the zip above.
Now, I migrated to AS3 and expected this to work:
ball.addEventListener(Event.ENTER_FRAME, HitTest);
function HitTest(e:Event) {
if (ball.hitTestPoint(root.mouseX, root.mouseY, true)) {
ball.nextFrame();
} else {
ball.prevFrame();
}
}
Check out what’s happening (as3prevFrame.swf): The prevFrame() and nextFrame() actions on “ball” are blocking “colorchange” from playing properly. See the difference between the 2 swf’s? What’s the deal with this behavior? There is nothing in the code above that should stop the color tweening from playing properly, like it did with AS2.
I 've got plenty of experience with flash, but I can’t figure out what to do with this one. Your insight will be much appreciated, because I’ve been making my flashier buttons like this for ages… and I’m at a dead end. Thanks.
