That's a neat solution, Argus. Since the intention of OS_NPC_SENSE_AS_AGENT was to provide compatibility rather than
'fool', I think returning both NPC and AGENT flags would be perfectly acceptable. Let's see if there are any other
comments, otherwise I think we can proceed along those lines. I'm still not that happy with extending llDetectedType()
but leakage has already occurred and I suspect its inevitable.
On another note, I'm not sure what 'plausibility' checks you're referring to.
On 11/07/12 13:04, Argus wrote:
I am fully aware of the open source factor and that in each open grid
everything can be changed, which is why one always
needs backend function to make sure no fals information is passed on to the
central service. One can however filter 99%
of the fals data in the local sim which helps the central service because it
does not need to process every single
plausability checks. In a multi grid environment with closed grids we even have
a lower chance of false data beeing
passed than in a open grid only environment.
We have the same situations in opensim were the simulator often does some
local plausability checks before it send
data to the gridservers. The gridservers again do a plausability check combined
with other methods which are not
available on the local sim. Only if all steps are plausable the data gets
processed further.
Anyway, I added a new patch for llDetectedType were NPCs always return NPC and
useing OS_NPC_SENSE_AS_AGENT will returns
AGENT + NPC. I think that is an acceptable compromize... I also added an
example script were the true NPC detection
always makes sense ;)
Am 11.07.2012 02:01, schrieb Justin Clark-Casey:
Argus, if your system relies on always reliably identifying unique avatars then
that is simply not possible in any
OpenSimulator environment where simulators are controlled by third parties or
where hypergrid travel is allowed.
Even if OS_NPC_SENSE_AS_AGENT did not exist, then people would be able to
compile a version of the code that did have
that functionality. This is not about ideology - it's about what is physically
possible!
Equally, it is perfectly possible to create duplicate HG details - anything can
be put in the agent data that comes
from a foreign grid ([email protected] or whatever). You cannot rely on
these to be unique either.
Without any central authority (like DNS, the secure certificate infrastructure
of something like Bitcoin block chains)
it is simply not possible to uniquely identify avatars.
I don't see this as much different from the web where one has to get people to
create unique accounts with passwords
in order to identify them later. Such a thing has to be done in some authority
system outside of OpenSimulator itself.
If your point is that without OS_NPC_SENSE_AS_AGENT then the vast majority of
systems would always present NPCs as
NPCs (rather than agents) then I would agree. In fact, in practice most people
won't use OS_NPC_SENSE_AS_AGENT anyway
as it's the option rather than the default. But you cannot rely on uniquely
identifying avatars on any environment
outside those that you directly control.
On a minor note, script functions that don't make any sense for NPCs should
behave as if the UUID they received did
not relate to a valid entity for that function.
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Justin Clark-Casey (justincc)
http://justincc.org/blog
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