MemNets is a framework for numerical simulations and games written in Scala, with Kotlin and Java friendly bindings.

Building an oscillator using the sparse variable DSL:

  ModelBuilder("DSL sparse") {  b => import b._  // import brings in DSL implicits... 
	
    val freq = 0.5.toFreq()
    val dampen = 0.01

    val y = Y(name = "y")
    val x = Y(name = "x", decay = -dampen)  // y'' = -dampen * y'

    x --> y                   // y' = x
    y --> x w = -freq * freq  // y'' = - f^2 * y

    // can specify what the time chart shows on top or let the system guess
    track(y)
    
    system.onTick = { te =>
      if (te.modSec(2))
        logr.debug(f"y = ${y.act}%.02f at ${te.secs} sec")
    }

    Trial(name = "IC by Step", time = 1 m)
    // on = 0 sets initial condition (system forces duration = 0)
    Step(y = y, on = 0, scale = 10.0)

    Trial(name = "IC by onReset", time = 1 m)
      .onReset = { y.update(10.0) }

    Trial(name = "sin input", time = 1 m)
    Sin(y = y, on = 1 s, period = 0.5.toPeriod, phase = Math.PI, scale = 0.5)

  }

The latest release is 1.0.0 using scala 2.12

• JavaFX 8 (default)
• JavaFX 12

Add these lines (or only the ones you need) to your SBT project definition

libraryDependencies  ++= Seq(
  "com.memnets" %% "api" % "1.0.0",
  "com.memnets" %% "models" % "1.0.0",
  "com.memnets" %% "awt" % "1.0.0",
  // for JavaFX 8 (default)
  "com.memnets" %% "fx" % "1.0.0"
  // for JavaFX 12
  // "com.memnets" %% "fx" % "1.0.0-12.0.2"
)

other jars are not published. can use sbt publishLocal

SBT build also supports cross-compiling with 2.13.0

Any code contributions most compile on 2.12 + 2.13

See Build.scala crossScalaVersions for info on issue with 2.13.1

Add these lines (or only the ones you need) to your project.

<dependency>
  <groupId>com.memnets</groupId>
  <artifactId>memnets-api_2.12</artifactId>
  <version>1.0.0</version>
</dependency>
<dependency>
  <groupId>com.memnets</groupId>
  <artifactId>memnets-models_2.12</artifactId>
  <version>1.0.0</version>
</dependency>
<dependency>
  <groupId>com.memnets</groupId>
  <artifactId>memnets-awt_2.12</artifactId>
  <version>1.0.0</version>
</dependency>           
// JavaFX 8
<dependency>
  <groupId>com.memnets</groupId>
  <artifactId>memnets-fx_2.12</artifactId>
  <version>1.0.0</version>
</dependency>  
<!--
// JavaFX 12   
<dependency>
  <groupId>com.memnets</groupId>
  <artifactId>memnets-fx_2.12</artifactId>
  <version>1.0.0-12.0.2</version>
</dependency>
-->    

• See Project Wiki
• See Structure page to determine which jars you need

• Clone this repository
• See Build.sbt for required environment variables and javafx options

• Install SBT 1.2.8+ (only version tested)
• At install directory NOTE: sbt may require more than the default memory for compile+tests

sbt test // will download jars, compile, and run tests
sbt "project fx" "run"

(with Scala plugin installed/enabled)

1. New Project from Existing Sources
2. Point to install directory
3. Select Build.sbt
4. Wait 5-10 seconds for IDE to process build
5. Build fully imported project
6. Navigate to fx/src/main/scala/memnets.fx.demo/DemosFX.scala and right-click to run

NOTE: see the Project Wiki for more on IntelliJ

(c) Memory Networks, 2019