Actionscript 3: Drag constraints

  • Started
  • Last post
  • 5 Responses
  • CyBrain

    Is it possible to constrain a MOVIE CLIP (not sprite) to a specific area?

    If this were as2, it would be draggableMovieClip_mc.startDrag... left, top, right, bottom);
    where false means don't lockcenter and the other variables are previously set numbers.

    I'm getting this error when I try to drag my movie clip: "ArgumentError: Error #1063: Argument count mismatch on flash.display::Sprite/startDrag... Expected 0, got 5.
    at flv_test_fla::MainTimeline/start...

    If you can't drag a movie clip. How do I make my movie clip a sprite?

    Also, why did Adobe set me years behind in my scripting knowledge by overhauling the actionscript?

    CyBrain
    Flag
  • whiteout0

    a sprite cannot be existing on the stage, it must be attached
    var rect = new Rectangle(L, T, R, B);
    sprite.startDrag(false, rect);

    google - as3 startDrag

    whiteout 0Permalink
    UpvoteDownvote
    Dogear
    Flag
      Show [[ numHiddenNotes ]] more notesAdd Note
      SaveCancel
    • CyBrain0

      Ok. that makes sense, but suppose I have a movie clip symbol I like the look of. Can I use that as my draggable graphic and constrain the movement of dragging to L, T, R, B?
      or
      If I put a linkage name on my movie clip and attach use addChild to put it on the stage, will that allow me to constrain the drag? or is that new thing on the stage still considered a movie clip?

      Seems like actionscript is taking away a feature that existed since the beginning of its history, but that can't be right.

      CyBrain 0Permalink
      UpvoteDownvote
      Dogear
      Flag
        Show [[ numHiddenNotes ]] more notesAdd Note
        SaveCancel
      • CyBrain0

        Ok I got somewhere by adding a new variable to my script like you said.
        var dragZone:Rectangle = new Rectangle(left, top, right, bottom);
        and then changing my other line to
        event.target.startDrag(false, dragZone);

        but the draggable area has quite a range for top and bottom.

        CyBrain 0Permalink
        UpvoteDownvote
        Dogear
        Flag
          Show [[ numHiddenNotes ]] more notesAdd Note
          SaveCancel
        • akoni0

          you mean something like this?

          var circle:Sprite = new Sprite();
          circle.graphics.beginFill(0xFFCC...
          circle.graphics.drawCircle(80, 80, 40);
          addChild(circle);

          circle.addEventListener(MouseEve... mouseDown)
          circle.addEventListener(MouseEve... mouseReleased);

          var rectangle:Rectangle = new Rectangle(0,0, 100, 100);
          function mouseDown(event:MouseEvent):void
          {
          circle.startDrag(false, rectangle);
          }

          function mouseReleased(event:MouseEvent...
          {
          circle.stopDrag();
          }

          akoni 0Permalink
          UpvoteDownvote
          Dogear
          Flag
          • but an MC instead of a spriteakoni
          Show [[ numHiddenNotes ]] more notesAdd Note
          SaveCancel
        • CyBrain0

          Yeah, I tried using linkage for my movie clip to put it on the stage and call it a new Sprite, but everything freaked out.

          You'd think I could Google something as basic as this, but nothing gives. I've been trying to figure this out for hours.

          CyBrain 0Permalink
          UpvoteDownvote
          Dogear
          Flag
          Show [[ numHiddenNotes ]] more notesAdd Note
          SaveCancel