CollisionList Class

package com.coreyoneil.collision
{
    import flash.display.DisplayObject;
    import com.coryoneil.collision.CollisionList

    public class CollisionList extends CDK
    {
        public function CollisionList(target, ... objs):void
        {
            addItem(target);

            for(var i:uint = 0; i < objs.length; i++)
            {
                addItem(objs[i]);
            }
        }

        public function checkCollisions():Array
        {
            clearArrays();

            var NUM_OBJS:uint = objectArray.length;
            var item1 = DisplayObject(objectArray[0]), item2:DisplayObject;
            for(var i:uint = 1; i < NUM_OBJS; i++)
            {
                item2 = DisplayObject(objectArray[i]);

                if(item1.hitTestObject(item2))
                {
                    if((item2.width * item2.height) > (item1.width * item1.height))
                    {
                        objectCheckArray.push([item1,item2])
                    }
                    else
                    {
                        objectCheckArray.push([item2,item1]);
                    }
                }
            }

            NUM_OBJS = objectCheckArray.length;
            for(i = 0; i < NUM_OBJS; i++)
            {
                findCollisions(DisplayObject(objectCheckArray[i][0]), DisplayObject(objectCheckArray[i][1]));
            }

            return objectCollisionArray;
        }

        public function swapTarget(target):void
        {
            if(target is DisplayObject)
            {
                objectArray[0] = target;
            }
            else
            {
                throw new Error("Cannot swap target: " + target + " - item must be a Display Object.");
            }
        }

        public override function removeItem(obj):void
        {
            var loc:int = objectArray.indexOf(obj);
            if(loc > 0)
            {
                objectArray.splice(loc, 1);
            }
            else if(loc == 0)
            {
                throw new Error("You cannot remove the target from CollisionList.  Use swapTarget to change the target.");
            }
            else
            {
                throw new Error(obj + " could not be removed - object not found in item list.");
            }
        }
    }
}