Oscar,
I interpreted your original message as being about creating something
like Teletortoise, which is, as Seth described, "where the model runs on
the server but displays [in the browser]". Creating a Teletortoise-like
thing by yourself is much more feasible than creating something like
Tortoise by yourself, because creating something where the simulation
runs entirely in the browser requires reimplementing the entire
simulation engine and the backend of the compiler, whereas Teletortoise
mostly just involves writing a thin client and a bit of server code. We
haven't done a whole lot of work on Teletortoise ourselves, but here
<http://li425-91.members.linode.com:9000/client?username=Guest> it is in
action.
You can find the webapp code for both Tortoise and Teletortoise here
<https://github.com/NetLogo/Galapagos/tree/master/app> in Galapagos
(though I think we really need to separate them out into two entirely
different repos at some point). Folders named "remote" refer to code
that is only for use in Teletortoise, "local" for Tortoise-only stuff,
and "core" for things that are used by both of them. (The naming scheme
is both poor /and/ my own doing.)
Any idea where I can start?
I would start by creating some web application project in a JVM language
(e.g. Java, Scala, Clojure) that depends upon this artifact
<https://bintray.com/netlogo/NetLogoHeadlessMaven/netlogoheadless/5.2.0-bb89cae/view>,
which is a version of NetLogo that runs without any GUI. The artifact
is accessible through the URL given and through BinTray's JCenter
repository. If you're using Maven, this page
<https://gradle.org/docs/current/userguide/dependency_management.html#sub:maven_jcenter>
explains how you can configure Maven to add JCenter as a place from
which to pull down dependencies.
Once your project's infrastructure is set up, I recommend looking at the
files in this package
<https://github.com/NetLogo/Galapagos/tree/master/app/models/remote/workspace>
and this package
<https://github.com/NetLogo/Galapagos/tree/master/app/models/core>.
Probably the best starting points for your code are this
<https://github.com/NetLogo/Galapagos/blob/master/app/models/remote/NetLogoController.scala#L129-L138>
(which sets up the workspace) and this
<https://github.com/NetLogo/Galapagos/blob/master/app/models/remote/workspace/StateTracker.scala#L36-L40>
(which gets the model state updates from the workspace so you can send
them to the client for display). If you're working on your project and
want to do something with your running NetLogo workspace and you don't
know what it's really capable of, I suggest looking at the code that is
used for the artifact. Here
<https://github.com/NetLogo/NetLogo-Headless/tree/bb89caec2ee73a1db394c9055d00380f88c500f6>
is a link to all of the code in that artifact, and here
<https://github.com/NetLogo/NetLogo-Headless/blob/bb89caec2ee73a1db394c9055d00380f88c500f6/src/main/workspace/AbstractWorkspace.scala>
is a link to `AbstractWorkspace` in particular, which has all sorts of
juicy information for you to chew over.
Hopefully you find this information helpful in getting started with your
project.
On 1/29/2015 11:22 AM, Seth Tisue wrote:
On Thu, Jan 29, 2015 at 12:36 AM, Oscar Martinez
<[email protected] <mailto:[email protected]>>
wrote:
> For an university project, I want to create a NetLogo/HubNet client based on
> Web technology. I'm not talking about a web client (I know that it exists),
> I'm talking about a web applications, where the user can access to the
> simulations of NetLogo/HubNet using only a web browser, with no downloads or
> configurations. It make sense? Any idea where I can start?
NetLogo Web (aka Tortoise) is already in pretty good shape:
https://github.com/NetLogo/NetLogo/wiki/Tortoise
<https://github.com/NetLogo/NetLogo/wiki/Tortoise>
Lots of models in the NetLogo Models Library work already; you can try
them out at
http://li425-91.members.linode.com:9000/create-standalone
<http://li425-91.members.linode.com:9000/create-standalone>
In Tortoise, the simulation runs entirely on the client.
See also Teletortoise, where the model runs on the server but displays
on the client. (As for the HubNet aspect, the intent is that
Teletortoise will serve as the basis for a future of HubNet. so a lot
of the groundwork has already been laid. but actual development work
on a new HubNet hasn't started.)
Seth
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