View difference between Paste ID: SLwXK2Z0 and DuZY2f44

 /// @func   instance_nth_nearest(x, y, obj, n)
 ///
 /// @desc   Returns the nth nearest object instance to a given point.
 ///			If none is found, noone is returned.
 ///
 /// @param  {real}      x			x-coordinate of point
 /// @param  {real}      y			y-coordinate of point
 /// @param	{object}	obj			object index (or all)
 /// @param  {real}      n			proximity
 ///
 /// @return {instance}  object instance found (or noone)
 ///
 /// GMLscripts.com/license
 
 function instance_nth_nearest(x, y, obj, n)
 {
     n = clamp(n, 1, instance_number(obj));
     var list = ds_priority_create();
     var nearest = noone;
     with (obj) ds_priority_add(list, id, distance_to_point(x, y));
     repeat (n) nearest = ds_priority_delete_min(list);
     ds_priority_destroy(list);
     return nearest;
 }