[Opensim-dev] Idea for 100% smooth region crossing

[Paul Fishwick]

Just speaking from analogy, it sounds roughly equivalent to a soft 
handoff between cells:

http://www.leapforum.org/published/internetworkMobility/split/node34.html

Makes sense to me. Not sure what the development issues are..-
p

Mircea Filipescu wrote:
> I brought this up on IRC less then an hour ago but felt this is more 
> of a discussion for the mailing list. For a few months I have been 
> curious about a certain question: What if 100% smooth border crossing 
> between regions could be simulated by allowing the region you come 
> from still manage your avatar until the region you go to has grabbed you?
>
> Currently, when an avatar crosses borders from a region to another, it 
> is left flying to infinity for 1-10 seconds as the region the avatar 
> was in lets go of it until the region the avatar is crossing to grabs 
> it and runs it again. My curiosity is if that time could be completely 
> cut away by having the region the avatar comes from still manage the 
> movement of that avatar once it crosses borders, until the target 
> simulator has grabbed the avatar and only let go of it once that 
> avatar is connected in its neighbor. The avatar would be basically 
> projected out of simulator bounds (into the neighbor's bounds) by the 
> sim it crosses from until the sim it crosses to has it connected 
> there. If such would be doable the avatar would not be 'let go of' for 
> any moment during border crossing, and that way one could cross from a 
> sim to another without experiencing any kind of delay.
>
> Shortly said, what I'm suggesting is that when you cross to a new sim 
> the sim you are in does not disconnect you the moment you crossed out 
> of its bounds, but instead disconnect you the moment the sim you are 
> crossing to has gotten you and is running the avatar in its instance. 
> This would be especially useful when vehicles will be implemented, as 
> border crossing delay has bigger impact with them. Also it would 
> highly reduce disconnects between failed border crossing, since the 
> sim you come from would not let go of you until the new sim has you in 
> it, so unless the sim thinks you were passed through when you weren't 
> there's no way to crash. What are your thoughts on this? Would such a 
> thing be possible and doable?
>
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-- 
Paul Fishwick, PhD
Professor and Director, Digital Arts and Sciences Programs
University of Florida
Computer & Information Science and Eng. Dept.
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