Prototype to test new ways for the "Explore" app

With objective to try new approach regarding the design of the « Explore » application. I have built this fully functional prototype to see if some new suggested features really worth it. The idea here, is to try it before even consider any changes in the current « Explore » application or in the API side. For that reason, it’s more efficient and faster to try it apart before.

So here’s the experimental application (I named it “Places” to avoid any confusion with the built-in “Explore” app.)

Here’s the url of the script to run the application :
(To install in Vircadia interface: Edit > Running Scripts… Load scripts from url)

Please, give it a try, and add your comment (In the Vircadia’s forum).
Basically what it would be good to know:

  • What works better
  • What is worse than before
  • What you think can be useful
  • What you think you would never use

(Keep in mind that this is a functional mockup. So negative comment of any kind are expected.)

Next, you will find the list of the different features or changes that have been put in this prototype and the reasons why they have been designed like this:

What has been changed compare the “Explore” application:

Complete retirement of the “beacon” solution…

The “Places” application is 100% driven by the Metaverse Server’s Place API. The beacon solution having too much flaws, it has been decommissionned for this re-built. (It has been very useful for in early time. Thank you)

Place API data extraction…

The extraction of the Place API data is done from the .js side, rather than the UI layer (.html). Doing this, allows to exclude the places that are not compatible with the protocol version use by Vircadia’s Interface. (It is not filtered out in the “Explore” app.) It also keeps the logic separated from the UI layer, which can be useful to anyone who want to simply redesign the UI.

But that’s for this prototype. In the future, the “Explore” app. is appealed to be redesign a couple of time again, when the number of places will become too high and certainaly another time when Vircadia will get decentralized. The data processing will need at some point to happen in the API it-self to really scale. So the “how to do it” will changed, but the “what it needs to do” might stay valid. (A good reason to start to define now the “what it needs to do”)

Removal of the pager solution…

The pager has been replaced by a scrollable list, with a “Load More…” button. A “sidewalk” area next to the scrollbar has been inserted for a comfortable usage in HMD mode.

Current location address…

The current location address is displayed at the footer of the “Places” application. This is also for HMD, since we can’t see the desktop window header and there was nowhere we could see that info.

The good things has been kept…

The navigation buttons, the search/address bar, the place entries with the blurry picture. Those things were good so they have been reused.

Presence of Life…

Since it was clearly a problem to get the number of user for a specific place without any potential cheating. This concept has simply been evacuated in this design. It has been replaced, instead, by a "presence of life " indicator. The domain for it’s part has the number of attendance. So you know that on a specific place, that you can expect to reach someone, but it could be somewhere else in the domain. The number of user or the presence of life is also no more criteria to be in top of the list. Some people in a domain is definitely not an indicator that there is a party that you can join.

There are 2 places list…

Because there was different needs, two list formats are available.

“Explore & Events” (that you get at the opening of the application)

This list aims to make discover places and figure where the interesting event could be. The place with a picture will appears at the first part of the list, follow by those that doesn’t have one. Setting a picture on a place implicitly means that you do something to make it more attractive. So we can expect that those place might have something to visit. At the opposite, places without picture are those that don’t expect visitor as in a museum. They are publicly open, but those place are workplace, test environment, in setup or just too private to be advertised. Withing these 2 groups, each place get a seeded random ordering. This is to give a chance to ever place to be sometime at the top of the list. (in their respective category) The sequence is random, but it get changed only every 5 days. It would be very annoying if the list was completely shuffled each time you open the application, while you get through the list. The beauty of the seeded random is that everyone has the same chances, so it gets rid of any idiotic race to be at the top: like artificial count inflation or place name starting with AAA, AAAA or AAAAA to appear at first. (We saw that a lot before. In Second Life specifically.)

“By Domains”

This list offer a more classic view. It’s the list of the domain, ordered by number of attendance, then alphabetically, with their places listed below. In that list you can see the count of user at the domain level. (This is reflecting what it is truly, with less concerns that what we have with the “Explore” app.) It keeps thing transparent. Now you see the real amount of people.

Place entries…

The place entries are now displaying the first line of the description instead of the manager name. This information is clearly more useful to figure what the place is, even if we have only the 55 first character, this seems to work fine in most of the case. Each place entry has now a link to open a “Place Detail” panel that open full page, with the picture, the description, and all the other important information: Title, owner, maturity level, domain name, count and capacity.


Both list can be filtered to display only the place that have “presence of life”. You can also filter by maturity level.


This version is 100% js/html5/css. There are no dependency on 3rd party libraries. Basically it’s 3 files with a bunch of icons/picture.

Experimental functionality: Open Invitation and Ongoing events

From any places, the user will find an “Invitation” button (violet megaphone icon) If the user click on it, it will be allowed to flag this place with an Open invitation to every one to join him. This will make this place in top of the list with a clear indication that someone there is open to socialize.

The same feature can also be used to flag the place has hosting an ongoing event.
When the user make the invitation, he can enter an event description that will appears on the place in top of the list.

The objective here is to clearly indicate to people where they would find people willing to socialize. Or to give them a clear marker where that event is happening.

This is precisely the kind of feature that we definitely want to try in a prototype before consider any investment in the real product line. Will it be useful? Not at all? Too complicated to use of not? That’s what we explore here.

Rules of this functionality:

To be accepted:

  • Only one invitation/event can be done per specific ip. (you call an event, we expect you to be nowhere else)
  • A place can have only one invitation/event. (The place get advertised or not. This is not a votation system.)
  • For an invitation/event request to be accpeted, The place’s domain must have at least one user online. (No event if nobody there)
  • If 25% of the places has an event, then it stops to accept new invites. (If all the place get an invitation/event, the feature would be useless. Over 25%, maybe it’s time to just go at an existing one rather to advertise another. This limit also possible abusive behavior.)

Additional soft-rule (UI only):

  • You can request only for a place if you are in present in the domain. (Not only based on the domain count. The UI will just show you the button where you are allowed. This is however less restrictive on server side. but I think this is acceptable.)

Expiration of the invitation/event:

  • Each invitation/event expires after 30 minutes.
  • But if the domain’s users count is 0 it get immediately deleted. (even if not expired)
  • Once it get expired, if the domain count is 1 or 2, then it will be deleted. (no sign of increasement indicating that something really happen there)
  • Once it get expired, if the domain count is 3, then invitation/event will be kept alive. (until the count get below 3.)

To be removed:

  • The delete is available only if there is an event. (From the place detail.)
  • The user can delete an invitation/event that has been created with his ip.
  • Anyone can delete an invitation/event that is expired.
    (NOTE: If thing get problematic, we might consider to simply allow anyone to delete anything anytime)

Technical details.

Since this functionality would require some new fields in the Place API, for this prototype I have simply put a php service between the application and the Metaverse server place API. So this allows to test such functionality without do any development directly on the API.

github repository:


I’ve just tried it and improvement compared to current Expore app is absolutely impressive. I love the idea of events you implemented.
I hand only two problems with the current version. First one is a bug in text rendering. For some entries letters are displayed on black background, and for some they are correctly rendered as transparent:
Another problem is that search bar seems to search only in place/domain titles. I frequently search for worlds by a given creator so this causes problems. Maybe domain creators and descriptions could also be searched?


Thanks a lot for bettering the explore experience. Teaching Vircadia in latest months showed that people really like an easy way to switch worlds, and also for teleporting to other places in the same domain via the local places paths. I used this teleporting function so intuitive in my mind that I found myself inconsciously trying to fetch the teleport just clicking the “/” keyboard on pc, just to see it switched on/off some (quite useful) statistics.

Just a small alert: I had a quite bad time in understanding why some people couldnot click on explore, even if I repeatedly told them to click on the “bar” they found another option in the File menu labeled explore and keep using it which is actually changing the server used to hold public bookmark and not the explore form itself.

This is actually part of the built-in “Explore” application (for the old beacon system)


  • Search is now done over: Place Name, Description, Owners and Tags. You can control which of these fields are getting searched.

  • I added the fonts, so it might solve a few issues about the display missing characters. (Let me know if this work for Linux)

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Testing on the Linux AppImage. Fonts are looking good. Can’t see the new filter buttons. Did reload scripts via Edit, but will try a cache flush.

Edit: Oh, I see, they only show up when there is something typed into the search box for them to apply to. Slightly user-surprising UI, but it makes sense once you know about it. I probably wouldn’t have been caught out by it if I had learned it in the more reasonable order (type something, oh, there are filter buttons) rather than explicitly looking for them context-free as part of UI testing.

Meanwhile, if it is easy to do, could the app also check for the presence of a server on localhost and, if found, tack “localhost” onto the bottom of the list? Just so it comes up in the list if you type the first few letters into search, as a shortcut.

Yes. it’s a good idea.

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