Scala versjon av http://linux.hig.no/Prosjekter/PizzaScriptet

gistfile1.scala

import java.util.Calendar
import scala.io._
import scala.collection.mutable.HashMap

abstract case class OrderLine(name: String, _price:Int, weight: Int){
  var ammount = 1
  def ++ {
    ammount += 1
  }
  def price = _price

  override def toString = {
    String.format("%1$2d x %2$-55s a %3$3d = %4$4d,- NOK", Array(ammount:
    Integer, name, price: Integer, (price * ammount): Integer))
  }
}

case class Sauce extends OrderLine("Rømmedressing", 20, 1)

case class CustomPizza(cn: String, cw:Int, cp:Int) extends OrderLine(cn,cp,cw)

case class NormalPizza(n: String, w: Int, p:Int) extends OrderLine(n, p, w) {
  override def price = if(isWednesday)  119 else _price;
  def isWednesday = 4 == Calendar.DAY_OF_WEEK
}

class Order(maxPrice: Int){
  val items = new HashMap[String, OrderLine];
  var totalPrice = 0;

  def add (item: OrderLine) {
    if(item.price + totalPrice < maxPrice) {
      totalPrice += item.price
      if(items.contains(item.name)){
        items(item.name)++
      }else {
        items += item.name -> item
      }
    }
  }

  override def toString = {
    items.values.mkString("\n") + String.format("\n %1$-65s = %2$4d,- NOK", Array("Total pris:", totalPrice: Integer))

  }

}
object pizza {
  def main(args: Array[String]) { 

    var people: Int = 0;
    if(args.size == 0){
      println("How many peeps");
      people = readLine().toInt;
    } else {
      people = args(0).toInt;
    }
    val numPizzas = (people * hunger).toInt

    val order = new Order(1200)

    println("Max antall pizza: " + numPizzas)

    for (i <- 1 to numPizzas ) {
      if(addSauce) {
        order add(new Sauce)
      }
      order add randomPizza
     }

    println(order);
  }

  val sourceProb = 0.7

  def addSauce() = rnd.nextDouble <= sourceProb

  def randomPizza() = weightedList(rnd.nextInt(weightedList.size))

  val rnd = new Random()
  val hunger = 0.4;

  val menu =
    NormalPizza("Pappas spesial", 4, 159) ::
    NormalPizza("Texas",          3, 149) ::
    NormalPizza("Blue Hawai",     7, 149) ::
    NormalPizza("Floriad",        4, 149) ::
    NormalPizza("Buffalo",        4, 149) ::
    NormalPizza("Chicken",        4, 149) ::
    NormalPizza("New York",       0, 149) ::
    NormalPizza("Las Vegas",      6, 149) ::
    NormalPizza("Vegetarianer",   0, 149) ::
    NormalPizza("FILADELFIA",     4, 149) ::
    NormalPizza("Hot Chicago",    7, 149) ::
    NormalPizza("Hot Express",    5, 149) ::
    NormalPizza("Kebab pizza spesial", 3, 169) ::
    CustomPizza("Egenkomponert Pepperoni Biff Bacon Skinke løk",       9, 159) ::
    CustomPizza("Egenkomponert Biff Pepperoni Bacon Skinke Tacokjøtt", 9, 159) :: Nil

  def weightedList = for(p <- menu; i <- 1 to p.weight) yield { p }
}