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POAS3/AIR Mobile Click and/or touchevents on moving objects
 

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    <p>few weeks ago i asked a question about a similair issue, but within the Starling Framework (<a href="https://stackoverflow.com/questions/16857841/starling-touchevent-on-sprite">Starling TouchEvent on Sprite</a>)</p> <p>Now, i am working on another mobile app/game with Away3d. I seem to have the same problem touching/tapping a moving sphere or box. When the sphere is not moving, i can just tap it exactly at its position, but when it rotates, the click-event doesnt fire very accurate. this only happens on Mobile (tested on Android 4.2.2: Nexus7/Galaxy S2 and iOS: iPad2/iPad Retina)</p> <pre><code>package { import away3d.containers.ObjectContainer3D; import away3d.containers.View3D; import away3d.core.pick.PickingColliderType; import away3d.core.pick.PickingType; import away3d.debug.AwayStats; import away3d.entities.Mesh; import away3d.events.MouseEvent3D; import away3d.primitives.SphereGeometry; import flash.display.Sprite; import flash.display.StageAlign; import flash.display.StageScaleMode; import flash.events.Event; import flash.geom.Vector3D; [SWF(frameRate="60")] public class Main extends Sprite { private var _container:ObjectContainer3D; private var _view:View3D; private var _sphere:Mesh; public function Main() { super(); addEventListener(Event.ADDED_TO_STAGE, onAdded_toStage); } private function onAdded_toStage(e:Event):void { removeEventListener(Event.ADDED_TO_STAGE, onAdded_toStage); stage.align = StageAlign.TOP_LEFT; stage.scaleMode = StageScaleMode.NO_SCALE; stage.addEventListener(Event.RESIZE, onResize_stage); init3d(); } private function onResize_stage(e:Event):void { _view.width = stage.stageWidth; _view.height = stage.stageHeight; } private function onEnter_frame(e:Event):void { _container.rotationY += 1; _view.render(); } private function onClick_sphere(e:MouseEvent3D):void { //reposition the sphere var deg:Number = Math.random() * 360; _sphere.x = 250 * Math.cos(deg); _sphere.z = 250 * Math.sin(deg); _sphere.y = 80 + (Math.random() * 40); } private function init3d():void { //create the 3d-view _view = new View3D(); _view.width = stage.stageWidth; _view.height = stage.stageWidth; addChild(_view); //create a cub _view.camera.z = -400; _view.camera.y = 75; _view.camera.lookAt(new Vector3D(0, 125, 0)); //create container _container = new ObjectContainer3D(); _view.scene.addChild(_container); //create sphere to tap _sphere = new Mesh(new SphereGeometry(10)); _sphere.pickingCollider = PickingColliderType.AS3_FIRST_ENCOUNTERED; _sphere.y = 100; _sphere.z = -250; _sphere.mouseEnabled = true; _sphere.addEventListener(MouseEvent3D.CLICK , onClick_sphere); _container.addChild(_sphere); var stats:AwayStats = new AwayStats(_view); addChild(stats); addEventListener(Event.ENTER_FRAME, onEnter_frame); } } </code></pre> <p>NOTE: i also tried different framerates, more events(Mouse_up, down etc), different pickers.</p> <p>As this problem also happens with 2d moving sprites (in starling) my guess is that is might be Stage3D or AIR related, instead of starling/away3d.</p> <p>Anyone has some suggestions? Maybe i'm forgetting to set something in the app.xml?</p>
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    1. COwhat do you mean by "doesn't fire very accurate"? clicking on objects in 3d is normally done via ray casts, so there could be a problem there
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    2. COI have to click in front (in the direction the object is moving) of the object i want to click. It seems that the touch-event is handled before the graphics-update. Update: http://forums.adobe.com/message/5410586#5410586 see the response of Jeffrey, maybe thats the problem here aswell.
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    3. COseems about right - are you having problems with fps, which would make this problem more noticeable?
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