public RollResult(IRollTarget target, SingleRollResult initialRollResult, SingleRollResult rerollResult, int modifierValue, int final)
{
Guard.Against.Null(target, nameof(target));
Guard.Against.Null(initialRollResult, nameof(initialRollResult));
InitialRollResult = initialRollResult;
Target = target;
RerollResult = rerollResult;
ModifierValue = modifierValue;
Final = final;
IsSuccessful = target.GetSuccessfulSides(initialRollResult.Die.TotalSides).Contains(final);
}
public IEnumerable <int> GetRerollSides(Die die, IRollTarget target)
{
return(die.GetSides().Except(target.GetSuccessfulSides(die.TotalSides)));
}
public bool RequiresReroll(SingleRollResult initial, IRollTarget target)
{
return(!target.GetSuccessfulSides(initial.Die.TotalSides).Contains(initial.SideRolled));
}
public decimal CalculateProbability(Die die, IRollTarget target, IRollModifier modifier)
{
var failures = die.TotalSides - target.GetSuccessfulSides(die.TotalSides).Count();
return(die.CalculateProbability(failures) * die.CalculateProbability(target.GetModifiedSuccessfulSides(die.TotalSides, modifier).Count()));
}
