You should perform a hit test against the various objects, for example, assuming you had an array objects
of movieclips and wanted to return another array collidingMovieclips
:
var collidingObjects:Array = new Array();
for(var i:int = 0; i < objects.length; i++) {
if(circle_mc.hitTestObject(objects[i])) {
collidingObjects.push(objects[i]);
}
}
You could quite easily add objects[i].name
to return the instance names instead, but I'm not sure why you'd want to.
Note that this is by no means the most efficient method, but may be sufficient to meet your needs.