Realistic jigsaw

hi
I have made jigsaws before … where a piece in dragged onto a target … if there is somesort of HitTest the piece snaps to _x and _y matching the target piece _x and _y.

I don’t want the target template

I just want a pile (well lets start with 4) pieces that are dragged about and if it can snap into a partner it does and then the joined pieces or any other piece can be dragged … i can’t work out how to get going with this with out a target template … any ideas thanks