public override void OnEventAboutToTrigger(RuleRollD20 evt)
{
Log.Write("ModifyD20AndSpendResource: RuleRollD20 about to trigger");
var previous = Rulebook.CurrentContext.PreviousEvent;
if (Rule == RuleType.SavingThrow)
{
var rule = previous as RuleSavingThrow;
if (rule == null)
{
return;
}
// Ensure saving throws get their stat bonus.
var modValue = Owner.Stats.GetStat(rule.StatType);
var statValue = (modValue as ModifiableValueAttributeStat)?.Bonus ?? modValue.ModifiedValue;
if (!rule.IsSuccessRoll(evt.PreRollDice(), statValue - rule.StatValue))
{
evt.SetReroll(1, TakeBest);
}
}
else if (Rule == RuleType.SpellResistance)
{
var rule = previous as RuleSpellResistanceCheck;
if (rule == null)
{
return;
}
var isSpellResisted = !rule.Initiator.Descriptor.State.Features.PrimalMagicEssence &&
(rule.SpellResistance > rule.SpellPenetration + evt.PreRollDice());
if (isSpellResisted)
{
evt.SetReroll(1, TakeBest);
}
}
else
{
base.OnEventAboutToTrigger(evt);
}
if (evt.RerollsAmount > 0)
{
Log.Write($"ModifyD20AndSpendResource: reroll for {Rule}, preroll was {evt.PreRollDice()}");
Owner.Resources.Spend(RequiredResource, 1);
if (Owner.Resources.GetResourceAmount(RequiredResource) == 0)
{
(Fact as Buff)?.Remove();
}
}
else
{
Log.Write($"ModifyD20AndSpendResource: no reroll needed for {Rule}");
}
}
public void OnEventAboutToTrigger(RuleRollD20 evt)
{
try
{
var rule = Rulebook.CurrentContext.PreviousEvent as RuleSavingThrow;
if (rule == null)
{
return;
}
var context = rule.Reason.Context?.SourceAbilityContext;
if (context?.Caster != Owner.Unit ||
!context.HasMetamagic((Metamagic)ModMetamagic.Persistent) ||
context.AbilityBlueprint.Type != AbilityType.Spell)
{
return;
}
// Note: RuleSavingThrow rolls the D20 before setting the stat bonus, so we need to pass it in.
// (The game's ModifyD20 component has a bug because of this.)
var modValue = Owner.Stats.GetStat(rule.StatType);
var statValue = (modValue as ModifiableValueAttributeStat)?.Bonus ?? modValue.ModifiedValue;
int roll = evt.PreRollDice();
if (rule.IsSuccessRoll(roll, statValue - rule.StatValue))
{
Log.Write($"Persistent spell ({context}): roll {roll} passed, force reroll.");
evt.SetReroll(1, false);
}
else
{
Log.Write($"Persistent spell ({context}): roll {roll} failed, not rerolling.");
}
}
catch (Exception e)
{
Log.Error(e);
}
}