question on a object
johnny
Luke-Jr
> Hay all i was wondering something. Im not sure how i can set the code right
> to make this work but ehre is whati did. I created a holster for guns to
> be put in but on the verb holster this none none on the gun im not sure
> how to make it move a gun to the holster the person is wearing. I no how
> to do like this:moveto(number of object); but not sure how to make it go
> to any of the kids of the generic holster? Can you help me? Thanks. Come
holster = $failed_match;
for o in (player.contents)
if (o:isa($holster))
holster = o;
break;
endif
endfor
if (holster == $failed_match)
return player:tell("You aren't wearing a holster!");
endif
...
johnny
Whaqt am i doing rong i made the verb holster on the generic gun called
holster this none none
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19:35:00
Daniel Jung
> Ok got the code to compile fine but its now saying line 3 verb not found.
This is not recommended, because every programmer may write his own
:isa() verb and returning arbitrary answers to calls. You should use the
object utility version.
$object_utils:isa(what, parent)
Good luck:
- Daniel
Luke-Jr
> johnny wrote:
> > Ok got the code to compile fine but its now saying line 3 verb not found.
>
> maybe Luke has the :isa() verb on root, thus applying to all objects.
No, I just wrote it like that because that's where isa belongs.
> This is not recommended, because every programmer may write his own
Nonsense.
@program #0:isa
return $object_utils:isa(this, @args);
.
> :isa() verb and returning arbitrary answers to calls. You should use the
> object utility version.
>
> $object_utils:isa(what, parent)
Except then programmers cannot override it to be isa($beverage) even without
inheriting from your $beverage.
michael munson
Luke-Jr
> @create $thing named screw up ISA calls to all descendants,blah
> @verb blah:isa this none this rxd
> @program blah:isa
> return 1;
> .
Yes, that is a by-design feature that programmers can do that.
Tim van Dijen
>
It is possible to 'block' that behaviour by setting the verb on root -o
or +b (a non-standard verb-flag, patches available on SourceForge).
Goblin
Luke-Jr
> Op 21-12-2009 19:37, Luke-Jr schreef:
> > On Monday 21 December 2009 03:35:04 am michael munson wrote:
> >> @create $thing named screw up ISA calls to all descendants,blah
> >> @verb blah:isa this none this rxd
> >> @program blah:isa
> >> return 1;
> >> .
> >
> > Yes, that is a by-design feature that programmers can do that.
>
> or +b (a non-standard verb-flag, patches available on SourceForge).
Both '-o' and '+b' are non-standard flags, and flawed in concept.
object:isa(parent) is for checking an object's type, not for security.
If you need a non-overridable verb, call it on a specific object, such as:
$object_utils:isa(key, $secured_parent);
But really, there is no reason to insist beverages inherit from your specific
Generic Pepsi... Even better, in fact, would be a verb dobj:can('autorecycle')
returning 1 for objects that are autorecycle-able...