/vqdr/trunk

using GLib;

namespace VQDR.Expression {

  /**

   * A Simple Represetation of a dice.

   */

  public class Dice {

    public int times { get; set; }

    public int faces { get; set; }

    public int modifier { get; set; }

    public Dice (int times = 1, int faces = 6, int modifier = 0) {

      this.times = times;

      this.faces = faces;

      this.modifier = modifier;

    }

    public int roll () {

      if (faces <= 0) {

        return modifier;

      }

      if (times <= 0) {

          return modifier;

      }

      if (faces == 1) {

        return times + modifier;

      }

      int retval = modifier;

      for (size_t i = 1; i <= times; i++) {

        int r = (VQDR.Common.Random.get_static_int () % faces).abs ();

        retval += r;

      }

      return retval;

    }

    public string to_string () {

      if ((times == 0) && (faces == 0)) {

        return "0";

      }

      StringBuilder retval = new StringBuilder ();

      if (times > 0) {

        retval.append (times.to_string ()).append_c ('d').append (faces.to_string ());

      }

      if (modifier > 0) {

          retval.append_c ('+').append (modifier.to_string ());

      } else if (modifier < 0) {

          retval.append (modifier.to_string ());

      }

      return (string) retval.data;

    }

  }

}