This simple Scala project offers a simple model for dice rolling, in the context of Games (and especially Role Playing Games).
At the root of the hierarchy lies the Rollable trait. It offers a single roll() method, which returns a Tuple of itself and the rolled result.
trait Rollable[T] {
def roll:(Rollable[T], T)
}Directly extending Rollable is Die It represents of those multi-sided dice commonly found in Role Playing Games.
class Die (val sides:Int)(implicit random:Random) extends Rollable[Int] {
override def roll:(Die, Int) = (this, random.nextInt(sides) + 1)
}One can inject dedicated random generators (especially useful for testing), but Die also provides a SecureDie object with an implicit random generator of type SecureRandom.
Finally, the API has dice objects, from d2 to d100 to easily start, e.g.:
val roll:(Die, Int) = d2.rollvar roll = d6.roll- etc.