Try something like this...
Code:

---

 
function item_event
{
	if(event_type == event_entity) && (you == player)
	{
		ent_remove(me);
	}
}

action item_action
{
	my.eneble_entity = on;
	my.event = item_event;
	while(me);
	{
 		my.pan += 4* time_step;
	wait(1);
	}
}
 

---

And remember about bounding boxes or use polygon detection