int ret = call_usecode_function(id, 0, &parm);
int ret = call_usecode_function(id, 1, &parm);
	int call_usecode(int id, Game_object *obj)		{		caller_item = obj;		Usecode_value parm(0);	// They all seem to take 1 parm.		int ret = call_usecode_function(id, 0, &parm);		caller_item = 0;		return ret;		}