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copied!<p>This code is tested and works. The class <strong>DummyCircle</strong> just draws a centered circle to its graphics object when instantiated.</p> <pre><code>private var plate:Sprite; private var stage:Stage; public function execute(stage:Stage):void { this.stage = stage; // number of pieces around the centered plate const numPieces:int = 8; const plateRadius:int = 50; plate = new DummyCircle(plateRadius); // center plate on the stage plate.x = stage.stageWidth / 2; plate.y = stage.stageHeight / 2; stage.addChild(plate); // for each piece to be created for (var i:int = 0; i < numPieces; i++) { // instantiate the appropriate sprite, here with a radius argument var piece:Sprite = new DummyCircle(plateRadius / numPieces); // add event listener for dragging piece.addEventListener(MouseEvent.MOUSE_DOWN, mouseListener); piece.addEventListener(MouseEvent.MOUSE_UP, mouseListener); // pieces are in the top left corner of the stage, plate is centered piece.x = 0; piece.y = 0; // a transformation matrix is used for positioning the pieces // get the current matrix var pieceMatrix:Matrix = piece.transform.matrix; // move a bit more than the plate radius on the y axis pieceMatrix.translate(0, -plateRadius * 1.5); // rotate around the origin pieceMatrix.rotate(i * (2 * Math.PI / numPieces)); // move again, this time to our plate pieceMatrix.translate(plate.x, plate.y); // apply the matrix piece.transform.matrix = pieceMatrix; stage.addChild(piece); } } private function mouseListener(e:MouseEvent):void { if (e.target is Sprite) { var target:Sprite = e.target as Sprite; if (e.type == MouseEvent.MOUSE_UP) { target.stopDrag(); if (target.hitTestObject(plate)) { stage.removeChild(target); } } else if (e.type == MouseEvent.MOUSE_DOWN) { target.startDrag(); } } } </code></pre>

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