AS3: HitTest Any Object

Question

I am working on an application where an image serves as cursor. Now i would like to know at any time over which object the cursor is hovering. Sort of like a HitTestObject(*) where i can then see what object the * represents. Does anyone have any idea how i could accomplish this? (and using the mouse is not an option)

Do you really need to hittest with the image itself? The mouse is still there, you just can't see it. You can hittest/mouseOver with that — divillysausages, Apr 06 '11 at 14:39
the mouse isn't there, that is what the problem is ;) i am using a different method to control the image :) — Michiel Standaert, Apr 06 '11 at 14:53

score 1 · Answer 1 · answered Apr 06 '11 at 14:19

Put the elements you want to monitor for 'hovering' in a separate array, then add an onEnterFrame listener to the object attached to your mouse that iterates through the array and performs hitTests with each of the objects.

var hitTestClips:Array;
// populate hitTestClips with the items you want to hitTest

and this goes in the onEnterFrame handler for your mouse-attached object:

for(var item:MovieClip in hitTestClips)
{
  if(item.hitTest(this.x, this.y, true))
  {
    trace('now hovering above ' + item);
  }
}

i tried that before, but couldn't use it because some objects weren't children of the cursor :) thanks anyway — Michiel Standaert, Apr 06 '11 at 15:01

score 1 · Accepted Answer · answered Apr 06 '11 at 14:49

I have solved the problem already :) since the cursor was in a different sprite than the others, i had to do it this way, because i couldn't pass the objects to hover into an array.

        //First we will create a point that contains the x and y of this cursor.
        var _position:Point = new Point(x + (width/2), y + (height/2));

        //Secondly, we will get an array of elements that are under this point.
        var _objects:Array = parentApplication.getObjectsUnderPoint(_position);

        //If the length of the objectsList is longer than or equal to 2, we may assume that
        //there is an object
        if(_objects.length >= 2)
        {
            //Set the currentObject variable to the object the cursor is hovering over.
            //The minus two is simple. The cursor is always the last object under that point,
            //so we need the object before that.
            _currentObject = _objects[_objects.length - 2];

            //dispatch the event in the object.
            dispatchCursorEventToObject(EyeEvent.CURSOROVER);
        }

AS3: HitTest Any Object

2 Answers2

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