( x . y )
email: frank@consxy.com | resume (pdf)

clnl (link)

This is an experiment at creating an alternate implementation of NetLogo in Common Lisp.

Using standalone executables (link)

Find the latest version, 0.1.0 on the releases page :

Running from source (link)

If you'd like to run it from source, you're going to need a few things:

  • A copy of the clnl source from the releases page, version 0.1.0
  • An implementation of sbcl with threads enabled
  • The following common lisp libraries (included in deps/common-lisp folder)
  • alexandria
  • babel
  • cffi
  • clnl-gltk
  • cl-opengl
  • cl-ppcre
  • ironclad
  • mt19937
  • nibbles
  • trivial-features
  • strictmath
  • ieee-floats

bin/nl and bin/run.lisp have been added for convenience to run the netlogo instance. Not very many commands are implemented, but it should alert you to that. A good test is

crt 10
ask turtles [ fd 1 ]
show random 5
ask turtles [ fd 5 ]

Running on OSX (link)

In order to run on OSX, you may have to build your own sbcl instance with threads enabled. See bin/buildosxexec.sh for how it's done when releasing/testing.

Running on Windows (link)

In order to run on Windows, you will need to install a copy of 32bit sbcl with threads enabled, as well as putting a copy of freeglut in that directory. See bin/buildwindowsexec.sh for how it's done when releasing/testing.

Running in a common lisp instance (link)

If you'd like to run using your own sbcl instance, you can attach the clnl.asd file wherever you link asd files, and then use:

(asdf:load-system :clnl)
(clnl:run)

strictmath (link)

Pure common lisp implentation of Java's StrictMath class. StrictMath is based on the pure software math library fdlibm, and as such, this solution should be equivalent and portable.

Limitations (link)

In the true "scratch an itch" category of software development, this library only does things as strictly needed by clnl in order to be consistent with regard to the JVM implementation of NetLogo. Only the following things are implemented and tested:

  • Double precision only
  • Bounded to [0,360] or [0,2pi] only
  • The following StrictMath methods
  • sin
  • cos
  • abs
  • toRadians

Anything else that works can be considered a pleasant surprise.

License (link)

This library lifts substantially from the evita-common-lisp implementation, as is noted in the LICENSE file. Outside of that, functions are attempted ports of fdlibm functions, in as close as possible to a line for line translation. As such, the files are similarly bound by the licenses included therein.

Dependencies (link)

The following are depended on by strictmath

  • ieee-floats

clnl-gltk (link)

This is a small experiment in creating some of the underlying tools that allows CLNL to implement NetLogo UI functionality.