EpidemySimulator_ExplicitShort.scala

sealed class Health(val infectious: Boolean, val visiblyInfectious: Boolean) {

  def evolve(implicit randomGenerator: RandomIntGenerator, config: MySimConfig): Option[HealthChange] =
    this match {
      case Healthy =>
        if (randomGenerator.randomBelow(101) <= config.transmissibilityPct)
          Some(new HealthChange(0, Incubatious))
        else None
      case Incubatious => 
        Some(new HealthChange(6, Sick))
      case Sick =>
        if (randomGenerator.randomBelow(101) <= config.mortalityPct)
          Some(new HealthChange(14 - 6, Dead))
        else None
      case Dead => 
        None
      case Immune => 
        Some(new HealthChange(18 - 16, Healthy))
      case Vaccinated => 
        None        
    }
}
//                                 infected?  visibly?
object Healthy extends      Health(false,     false)
object Incubatious extends  Health(true,      false)
object Sick extends         Health(true,      true)
object Dead extends         Health(true,      true)
object Immune extends       Health(true,      false)
object Vaccinated extends   Health(false,     false)