Refactor FormulaHelper to read racial resistances

FormulaHelper previously applied racial resistances by reading the player's race directly. With this change, the saving throw calculation will be modified by the contents of the player's RaceTemplate.

Addresses the following issue:
Interkarma#2660

Assets/Scripts/Game/Entities/RaceTemplate.cs

@@ -187,6 +187,8 @@ public Breton()
 
  PaperDollHeadsMale = "FACE00I0.CIF";
  PaperDollHeadsFemale = "FACE10I0.CIF";
+
+ ResistanceFlags = DFCareer.EffectFlags.Magic;
  }
  }
 

Assets/Scripts/Game/Formulas/FormulaHelper.cs

@@ -1509,9 +1509,14 @@ public static int SavingThrow(DFCareer.Elements elementType, DFCareer.EffectFlag
  savingThrow += 25;
 
  savingThrow += biographyMod + modifier;
- if (elementType == DFCareer.Elements.Frost && target == playerEntity && playerEntity.Race == Races.Nord)
- savingThrow += 30;
- else if (elementType == DFCareer.Elements.Magic && target == playerEntity && playerEntity.Race == Races.Breton)
+
+ // Apply racial resistances
+ var raceTemplate = playerEntity.GetLiveRaceTemplate();
+ if ((elementType == DFCareer.Elements.Fire && (raceTemplate.ResistanceFlags & DFCareer.EffectFlags.Fire) != 0) ||
+ (elementType == DFCareer.Elements.Frost && (raceTemplate.ResistanceFlags & DFCareer.EffectFlags.Frost) != 0) ||
+ (elementType == DFCareer.Elements.DiseaseOrPoison && (raceTemplate.ResistanceFlags & (DFCareer.EffectFlags.Disease | DFCareer.EffectFlags.Poison)) != 0) ||
+ (elementType == DFCareer.Elements.Shock && (raceTemplate.ResistanceFlags & DFCareer.EffectFlags.Shock) != 0) ||
+ (elementType == DFCareer.Elements.Magic && (raceTemplate.ResistanceFlags & DFCareer.EffectFlags.Magic) != 0))
  savingThrow += 30;
 
  // Handle perfect immunity of 100% or greater