package { import flash.display.Sprite; import flash.text.TextField; import flash.events.MouseEvent; import org.libspark.betweenas3.BetweenAS3; import org.libspark.betweenas3.tweens.ITween; import org.libspark.betweenas3.easing.*; public class Sample extends Sprite { public function Sample() { var box1:Box = new Box(); var box2:Box = new Box(); box1.y = 100; box2.y = 200; // Add each box before tween, and remove each box after tween. _t = BetweenAS3.serial( BetweenAS3.addChild(box1, this), BetweenAS3.tween(box1, {x: 220}, {x: 20}, 1.2, Bounce.easeOut), BetweenAS3.removeFromParent(box1), BetweenAS3.addChild(box2, this), BetweenAS3.tween(box2, {x: 20}, {x: 220}, 1.2, Bounce.easeOut), BetweenAS3.removeFromParent(box2) ); // Important point: // When this tween is replayed after finished playing, // state of each box (added/removed) will be restored. // Set to be never stop _t.stopOnComplete = false; // Start the tween _t.play(); // MouseUp listener stage.addEventListener(MouseEvent.MOUSE_UP, mouseUpHandler); } private var _t:ITween; private function mouseUpHandler(e:MouseEvent):void { // Stop the tween if playing // Start the tween if stopping _t.togglePause(); // Note: You can use gotoAndPlay(time) or gotoAndStop(time) too. } } } import flash.display.Sprite; internal class Box extends Sprite { public function Box() { graphics.beginFill(0); graphics.drawRect(-10, -10, 20, 20); graphics.endFill(); } }