Peg Puzzle with Snap To and Animate

I would like to know if it's possible to create a Peg Puzzle with the same type of behaviours as in this Demo video

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Being able to drag the pieces from the side panel and allow them to snap into place from within say 35px and then animate the sprite, so far eludes me.

I would be most grateful if anyone has some code hints, tutorials etc to point me too.

Thanks

Put a detector sprite at each point you want to snap to. Make it as large as you need eg. 70px. Use the drag and drop behavior on your animations then check that the dropped sprite overlaps the detector. If it does set the sprite x,y to the centre of the detector. Then run your animation.