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as3 droptarget

Posted on 2011-09-21
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Last Modified: 2013-11-11
I'm doing a drag and drop interaction.  The very basic code is

function mouseDown(event:MouseEvent):void
{
	event.currentTarget.startDrag();
}


function mouseReleased(event:MouseEvent):void
{
	event.currentTarget.stopDrag();
	if (event.currentTarget.dropTarget != null)
	{		
		event.currentTarget.x = event.currentTarget.dropTarget.parent.x;
		event.currentTarget.y = event.currentTarget.dropTarget.parent.y;
	}	
}

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I'll have several draggable objects and droptargets.  Now the problem I have is if a given droptarget already has something dropped on it, it shouldn't allow anything else to be dropped on it ie. "disabled".  If I drag the object off of it, that particular target would need to be "enabled" again.  Haven't come up with any idea on how to do this.

Oh yeah, all the draggable objects are able to be dropped on all of the droptargets.  I'll evaluate whether the correct objects have been dropped on the correct targets later.
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Question by:moglie
8 Comments
 
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Accepted Solution

by:
dgofman earned 500 total points
ID: 36577626
If you are using DragManager class

http://livedocs.adobe.com/livecycle/8.2/programLC/common/langref/mx/managers/DragManager.html

You should control all your drop target(s) by acceptDragDrop API

http://livedocs.adobe.com/flex/3/html/dragdrop_7.html
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Author Comment

by:moglie
ID: 36577691
Not using Flex or any ui components.  The draggable objects and droptargets are just movieclips.
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Assisted Solution

by:dgofman
dgofman earned 500 total points
ID: 36577704
But DragManager is not for Flex is ActionScript 3 class.

Check this example its pure AS

http://icodesnippet.com/snippet/actionscript-3/as3-drag-n-drop
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LVL 29

Expert Comment

by:dgofman
ID: 36577733
Check this tutorial it will tell you basic steps

http://www.youtube.com/watch?v=ALqGYMsRWxw
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Expert Comment

by:dgofman
ID: 36577739
and in step 2 showing how to control drop target

http://www.youtube.com/watch?NR=1&v=1hR3CVIdfuY
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Expert Comment

by:Carnou
ID: 36581721
Why not simply add a flag to the drop target that says there is something dropped in it? MovieClips are dynamic; you can create a new field and check to see if it exists and is set in your MouseDown event.
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Expert Comment

by:CyanBlue
ID: 37337072
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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