Help enhance my Drag&Drop code

Question

Good day!
I have here my code for a simple drag and drop excercise and it looks a little bit redundant. I want to enhance it and trim it down for efficiency but I'm not really sure how should I do it. Also, I have a problem when selecting a drag object; when I click it, it is lost. I really don't know why it happens, I just followed a tutorial I've seen on the internet. Help would really be appreciated!
Sincerely,
Mr. Milo
MY CODE ARE AS FOLLOWS:
at1.addEventListener(MouseEvent.MOUSE_DOWN, pickAT);
in1.addEventListener(MouseEvent.MOUSE_DOWN, pickIN);
in2.addEventListener(MouseEvent.MOUSE_DOWN, pickIN);
in3.addEventListener(MouseEvent.MOUSE_DOWN, pickIN);
in4.addEventListener(MouseEvent.MOUSE_DOWN, pickIN);
in5.addEventListener(MouseEvent.MOUSE_DOWN, pickIN);
in6.addEventListener(MouseEvent.MOUSE_DOWN, pickIN);
in7.addEventListener(MouseEvent.MOUSE_DOWN, pickIN);
in8.addEventListener(MouseEvent.MOUSE_DOWN, pickIN);
on1.addEventListener(MouseEvent.MOUSE_DOWN, pickON);
on2.addEventListener(MouseEvent.MOUSE_DOWN, pickON);
at1.addEventListener(MouseEvent.MOUSE_UP, dropAT);
in1.addEventListener(MouseEvent.MOUSE_UP, dropIN);
in2.addEventListener(MouseEvent.MOUSE_UP, dropIN);
in3.addEventListener(MouseEvent.MOUSE_UP, dropIN);
in4.addEventListener(MouseEvent.MOUSE_UP, dropIN);
in5.addEventListener(MouseEvent.MOUSE_UP, dropIN);
in6.addEventListener(MouseEvent.MOUSE_UP, dropIN);
in7.addEventListener(MouseEvent.MOUSE_UP, dropIN);
in8.addEventListener(MouseEvent.MOUSE_UP, dropIN);
on1.addEventListener(MouseEvent.MOUSE_UP, dropON);
on2.addEventListener(MouseEvent.MOUSE_UP, dropON);
at1.buttonMode = true;
in1.buttonMode = true;
in2.buttonMode = true;
in3.buttonMode = true;
in4.buttonMode = true;
in5.buttonMode = true;
in6.buttonMode = true;
in7.buttonMode = true;
in8.buttonMode = true;
on1.buttonMode = true;
on2.buttonMode = true;
var startX: Number;
var startY: Number;
var correct: Number = 0;
var attempt: Number = 0;
// I think I have a problem here
function pickAT(event:MouseEvent): void {
    var obj = event.target;
    obj.startDrag();
    obj.x = startX;
    obj.y = startY;
function pickIN(event:MouseEvent): void {
    var obj = event.target;
    obj.startDrag();
    obj.x = startX;
    obj.y = startY;
function pickON(event:MouseEvent): void {
    var obj = event.target;
    obj.startDrag();
    obj.x = startX;
    obj.y = startY;
function dropAT(event:MouseEvent): void {
    var object = event.target;
    object.stopDrag()
    if(object.dropTarget != null && object.hitTestObject(targetAT1)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickAT);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropAT);
        object.buttonMode = false;
        object.x = targetAT1.x;
        object.y = targetAT1.y;
    else {
        attempt++;
        attemptCounter.text = String(attempt);
        object.x = startX;
        object.y = startY;
function dropIN(event:MouseEvent): void {
    var object = event.target;
    object.stopDrag()
    if(object.dropTarget != null && object.hitTestObject(targetIN1)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickIN);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropIN);
        object.buttonMode = false;
        object.x = targetIN1.x;
        object.y = targetIN1.y;
    else if(object.dropTarget != null && object.hitTestObject(targetIN2)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickIN);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropIN);
        object.buttonMode = false;
        object.x = targetIN2.x;
        object.y = targetIN2.y;
    else if(object.dropTarget != null && object.hitTestObject(targetIN3)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickIN);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropIN);
        object.buttonMode = false;
        object.x = targetIN3.x;
        object.y = targetIN3.y;
    else if(object.dropTarget != null && object.hitTestObject(targetIN4)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickIN);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropIN);
        object.buttonMode = false;
        object.x = targetIN4.x;
        object.y = targetIN4.y;
    else if(object.dropTarget != null && object.hitTestObject(targetIN5)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickIN);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropIN);
        object.buttonMode = false;
        object.x = targetIN5.x;
        object.y = targetIN5.y;
    else if(object.dropTarget != null && object.hitTestObject(targetIN6)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickIN);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropIN);
        object.buttonMode = false;
        object.x = targetIN6.x;
        object.y = targetIN6.y;
    else if(object.dropTarget != null && object.hitTestObject(targetIN7)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickIN);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropIN);
        object.buttonMode = false;
        object.x = targetIN7.x;
        object.y = targetIN7.y;
    else if(object.dropTarget != null && object.hitTestObject(targetIN8)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickIN);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropIN);
        object.buttonMode = false;
        object.x = targetIN8.x;
        object.y = targetIN8.y;
    else {
        attempt++;
        attemptCounter.text = String(attempt);
        object.x = startX;
        object.y = startY;
function dropON(event:MouseEvent): void {
    var object = event.target;
    object.stopDrag()
    if(object.dropTarget != null && object.hitTestObject(targetON1)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickON);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropON);
        object.buttonMode = false;
        object.x = targetON1.x;
        object.y = targetON1.y;
    else if(object.dropTarget != null && object.hitTestObject(targetON2)) {
        attempt++;
        correct++;
        attemptCounter.text = String(attempt);
        correctCounter.text = String(correct);
        object.removeEventListener(MouseEvent.MOUSE_DOWN, pickON);
        object.removeEventListener(MouseEvent.MOUSE_UP, dropON);
        object.buttonMode = false;
        object.x = targetON2.x;
        object.y = targetON2.y;
    else {
        attempt++;
        attemptCounter.text = String(attempt);
        object.x = startX;
        object.y = startY;

Answer 1

Ned,
Thank you for looking into the code and pointing to the mistakes.
Milo,
I was typing off the top of head and, of course, overlooked some things. Hopefully this works:
var startX: Number;
var startY: Number;
var correct: Number = 0;
var attempt: Number = 0;
var currentlyDragged:MovieClip;
// collection of objects stored in array
// so that you can reference them programmatically
var objects:Array = [at1, in1, in2, in3, in4, in5, in6, in7, in8, on1, on2];
activateObjects();
// assigns listeners and other functionality to the objects in objects array
function activateObjects():void {
     for each(var mc:MovieClip in objects) {
          mc.addEventListener(MouseEvent.MOUSE_DOWN, pickObject);
          mc.buttonMode = true;
          // assign drop targets based on names
          switch(String(mc.name).substring(0, 2)) {
               case "at":
                    mc.dropTargets = [targetAT1];
               break;
               case "in":
                    mc.dropTargets = [targetIN1, targetIN2, targetIN3, targetIN4, targetIN5, targetIN6, targetIN7, targetIN8];
               break;
               case "on":
                    mc.dropTargets = [targetON1, targetON2];
               break;
function pickObject(e:MouseEvent):void {
     currentlyDragged = MovieClip(e.currentTarget);
     currentlyDragged.startDrag();
     startX = currentlyDragged.x;
     startY = currentlyDragged.y;
     stage.addEventListener(MouseEvent.MOUSE_UP, dropObject);
function dropObject(e:MouseEvent):void {
     stage.removeEventListener(MouseEvent.MOUSE_UP, dropObject);
     stopDrag();
     var droppedOn:MovieClip;
     if (currentlyDragged.dropTarget) {
          // loop through targets belonging to the currently dragged clip
          for each(var mc:MovieClip in currentlyDragged.dropTargets) {
               if (currentlyDragged.hitTestObject(mc)) {
                    // get the target
                    droppedOn = mc;
                    currentlyDragged.removeEventListener(MouseEvent.MOUSE_DOWN, pickObject);
                    currentlyDragged.buttonMode = false;
                    currentlyDragged.x = droppedOn.x;
                    currentlyDragged.y = droppedOn.y;
                    correct++;
                    correctCounter.text = String(correct);
                    // stop loop - it is not necessary to continue
                    break;
     attempt++;
     attemptCounter.text = String(attempt);
     // return to the initial position if there is no hit
     if (!droppedOn) {
        currentlyDragged.x = startX;
        currentlyDragged.y = startY;
Message was edited by: Andrei1