Re: [mmox] The Story So Far...

[Charles Krinke <[e-mail]>]

Now, I need to ask a question, as I dont know how WoW, Croquet or Wonderland work. And perhaps this really indicates we need a representative from each of those. That is, if those are the other worlds to be considered. I dont really know what their future usage will be in a 3D internet as we go away from the "flat web".

In any case, "Can we define a message format for avatar presence that contains fields to allow 3D interactive browsing that is reasonable for the SecondLife and OpenSim teams and also flexible enough to be useful for other teams?"

Charles




________________________________
From: Suzy Deffeyes <[e-mail]>
To: "Hurliman, John" <[e-mail]>
Cc: "[e-mail]" <[e-mail]>
Sent: Wednesday, February 18, 2009 1:56:29 PM
Subject: Re: [mmox] The Story So Far...




On Wed, Feb 18, 2009 at 1:41 PM, Hurliman, John <[e-mail]> wrote:

The HyperGrid implementation in OpenSim today establishes a full trust link between two separate service stacks (grids). It's a very clever way of combining grids, but doesn't address how untrusted administrative domains interact with each other at all. I don't understand why you keep comparing Agent Domain and HyperGrid.

My understanding of the Agent Domain model is that it maps every trust relationship between grids to a policy decision. This is important for the business case of company X and company Y creating a partnership that is explicitly configured, but glazes over the 99.999% use case of moving from untrusted grid A to untrusted grid B. I haven't seen any work from AWG addressing the possibility of eliminating all grid<->grid communication (google.com doesn't communicate with the links I click, the browser is perfectly capable of managing its own state).

For the google 2d browsing analogy, I don't need to see a representation of other people that also happen to be visiting that same link, and I also don't have a name and 3D representation of myself that I want to remain consistent on my screen as I go from link to link. 

In our MMOX space, it can be desirable to have a consistent representation of self that also appears the same to others in the same region. Not always, but for a fair number of use cases that involve teleportation it does. I'm not sure how that can happen if we eliminate all grid to grid communication.

Maybe Agent Domain type implementations 'squirt' too much state along with an agent that is being transferred into a region. Maybe we need to tease that apart.  I think the actual OGP implementation right now just squirts your name, UUID, a few bits, and desired location into the region. 

Suzy Deffeyes
IBM