SBT build for Scalatron (see also https://github.com/jmhofer/scalatron-bot.g8)

Build.scala

// copy all jars from Scalatron's distribution (bin directory) into lib/

lazy val botDirectory = settingKey[File]("bot-directory")
lazy val play = taskKey[Int]("Plays a game of Scalatron, returns the exit code upon completion.")

lazy val Versions = new {
  lazy val Specs2 = "3.8.6"
}

lazy val root = (project in file(".")).settings(
  inThisBuild(Seq(
    organization := "de.johoop",
    scalaVersion := "2.12.1",
    scalacOptions ++= Seq("-encoding", "UTF8", "-deprecation", "-unchecked"),
    scalacOptions in Test += "-Yrangepos"
  )),

  name := "scalatron-bot",

  libraryDependencies += "org.specs2" %% "specs2-core" % Versions.Specs2 % Test,

  botDirectory := file("bots"),
  javaOptions += "-Xmx1g",

  play := {
    val bots = botDirectory.value
    val ucp = (unmanagedClasspath in Compile).value
    val botJar = (Keys.`package` in Compile).value

    IO createDirectory (bots / name.value)
    IO copyFile (botJar, bots / name.value / "ScalatronBot.jar")

    Fork.java(
      config = ForkOptions(
        runJVMOptions = javaOptions.value ++ Seq("-cp", (ucp.files :+ botJar).absString)
      ),
      arguments = Seq("scalatron.main.Main", "-plugins", bots.absolutePath)
    )
  }
)

instead of manual String formatting in "play" you could do this:

("java" :: javaOptions ::: "-cp" :: Seq(ucp.files.head, botJar).absString :: "scalatron.main.Main" :: "-plugins" :: bots :: Nil) !

or you could use the Fork API:

Fork.java(.....)

see also https://github.com/jmhofer/scalatron-bot.g8