Update to Scala 3

.gitignore

@@ -30,9 +30,14 @@ lift_example
 vagrant/.bashrc
 vagrant/sbt-launch.jar
 
+tmp
+
 # Metals
-.metals/
-.bloop/
+.bsp
+.metals
+.bloop
 metals.sbt
 
-tmp
+# VSCode
+.vscode
+

build.sbt

 lazy val root = (project in file(".")).
   settings(
     name := "Boids",
-    version := "1.0",
-    scalaVersion := "2.13.1"
+    version := "2021.0",
+    scalaVersion := "3.0.0-RC1"
   )
 
-
-
-libraryDependencies += "org.scalafx" %% "scalafx" % "12.0.2-R18"
-libraryDependencies += "org.typelevel"  %% "squants"  % "1.6.0"
-libraryDependencies += "org.scalactic" %% "scalactic" % "3.1.1"
-libraryDependencies += "org.scalatest" %% "scalatest" % "3.1.1" % "test"
+libraryDependencies += "org.scala-lang.modules" %% "scala-swing" % "3.0.0"
+libraryDependencies += "org.scalameta" %% "munit" % "0.7.22" % Test
+testFrameworks += new TestFramework("munit.Framework")

project/build.properties

-sbt.version=1.3.8
+sbt.version=1.4.9

project/plugins.sbt

+// This tells SBT to load the SBT plugin for Scala 3 (codenamed dotty)
+// Because Scala 3 is still in "developer preview", its compiler is provided to sbt by a plugin
+addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.5.3")

src/main/scala/cosc250/boids/Simulation.scala

@@ -22,9 +22,8 @@ object Simulation {
   /** When the boids are startled, the strength of the vector that is applied to each of them */
   val startleStrength:Double = Boid.maxSpeed
 
-  val startleFunction:Boid => Vec2 = {
-    ???
-  }
+  /** A function that will "startle" a boid */
+  def startleFunction(b:Boid):Vec2 = ???
 
   /** A mutable queue containing the last `frameMemory frames` */
   val queue:mutable.Queue[Seq[Boid]] = mutable.Queue.empty[Seq[Boid]]
@@ -60,7 +59,8 @@ object Simulation {
   def current = ???
 
   /** Generates boids in the centre of the simulation, moving at v=1 in a random direction */
-  def explosionOfBoids(i:Int):Seq[Boid] = ???
+  def explosionOfBoids(i:Int):Seq[Boid] = 
+    ???
 
   /** Pushes a state into the queue */
   def pushState(boids:Seq[Boid]):Seq[Boid] = {