Advice needed on crossing sim with stairs

I have land that crosses 2 sims and have some steps crossing the sim border to enter another part. But obviously when you climb the stairs you disappear down and go underneath. I do know that this does happen but....

Is there anyway you can reduce this somehow . Thanks.

You need a transparent ramp at the same height as the stairs but with it's centre in the other sim....

thank you,

Sorry E I cant get that to work?

The amount of sim crossing bugs in JIRA is so numerous that I can't even tell you where to vote. There is no way you can make it work reliably all the time for stairs, because it doesn't work reliably even for level ground, and most builders faced with the problem choose to mark the sim crossing with a sign instead. You can add more prims in either sim to reduce the effect, but people will still fall through them half the time.

If possible, redesign the building so that the stairs is at least a few meters away from the crossing - level ground crossing does offer less chance to fall down.

I'd suggest the same, steps; a 4 to 5 meter level; steps, but that all depends on the design of the steps I guess

I think torley did a video on it, offcourse he was just showing a level crossing, and to stop falling trough made 2 prims overlap each with the center on the other sim.

Right, I think that's the key: you need (almost completely) overlapping prims with origins on each side of the crossing. It may help to understand that a prim with an origin in one sim is phantom in all others.

Ah... so does that mean that this problem is not the usual sim border crossing problem (where you sink into the ground) but the prims are *supposed* to be phantom?

It's a related problem, I think. From my experimentation, if the prim one is standing on in sim A continues into sim B, one tracks it while crossing from A to B, until B actually accepts the handoff and then tries to find a place to put your avatar. If there's no prim there with an origin on the B side, you fall through, because that prim from the A side is phantom over on B.

When crossing on the ground, the viewer just extrapolates your trajectory until B gets around to accepting the handoff and tells the viewer where the ground is, and catches up with any control events you may have generated to change your motion. This same "rubber banding" happens when the sim or network is too busy to provide timely viewer updates.

(No idea if this explains anything, or if I'm just obfuscating the obvious here. )

It's as Qie says.

If you have a prim centred in one sim and it sticks into an adoining sim, the part of the prim that lies within the adjoining sim is phantom.

In order to make an apparently solid walkable surface that crosses a sim boundary, you need to have a pair of overlapping prims, each one centred in a different sim.

I have a platform that spans sim boundaries.
I just put flat 10m prims centred a fraction short of the sim boundaries in each sim. I can cross without falling through, although rubber banding does happend from time to time.

I just tested this with a pair of inclined prims and had no problems.



I remember a long time ago reading something about sim servers looking 10m into adjoining sims in order to track incoming avatars/objects.
On that basis I went with a 10m dimension on the sim crossing axis. That gives the maximum overlap using normal prims.
I haven't tried this with megaprims, but I suspect that they might give rise to strangeness.


I havn't tried with linked objects either.
However, if you did have a complex object crossing a sim boundary, I would guess that the easiest solution for walkability would be a pair of overlapping transparent prims inserted into the build.

Don't. Do. It.

I've been fighting the battle of stairs at a sim crossing for 9 months. I've even had Ceera (our resident expert) come out and do my crossing. I still have fall throughs at the stairs. I'm about to remodel that crossing to be perfectly flat at 10m on either side of the sim border.

Your stairs just have to position at 10m from the sim edge, there is no way around it.