Minor Comments and Refactoring - Letter for Mytosis Birth

Source/Animal_Inheritance/Patches/Patch_RJW_PregnancyHelper_VanillaExpandedGenetics.cs

@@ -0,0 +1,65 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Verse;
+using RJW_BGS;
+using HarmonyLib;
+using rjw;
+using static rjw.Hediff_BasePregnancy;
+using RJW_Genes;
+
+namespace RJW_BGS
+{
+    [HarmonyPatch(typeof(PregnancyHelper))]
+    public class Patch_RJW_PregnancyHelper_VanillaExpandedGenetics
+    {
+
+        /// <summary>
+        /// This Patch changes the pregnancy logic to check for possible hybridization. 
+        /// Iff the hybrdiization applies, this prefix skips the normal AddPregnancyHediff (by returning false). 
+        ///
+        /// Small Note: Below we use `Hediff_BasePregnancy.Create<Hediff_BestialPregnancy>(mother, father, DnaGivingParent.Mother);`
+        /// This completely creates the pregnancy, it does not need to be assigned to anything or added to some hediffs. 
+        /// </summary>
+        [HarmonyPrefix]
+        [HarmonyPatch("AddPregnancyHediff")]
+        public static bool AddPregnancyHediffPrefix(Pawn mother, Pawn father)
+        {
+            if (!RJW_BGSSettings.rjw_bgs_VE_genetics) return true;
+            if (mother == null || father == null) return true;
+            bool humanMotherAndSupportedAnimal = mother.IsHuman() && Patch_RJW_BasePregnancy_VanillaExpandedGenetics.supportedInitialAnimalRaces.Contains(father.kindDef.race.defName);
+            bool humanMotherAndSupportedHybrid = mother.IsHuman() && Patch_RJW_BasePregnancy_VanillaExpandedGenetics.supportedHybridRaces.Contains(father.kindDef.race.defName);
+            bool humanFatherAndSupportedAnimal = father.IsHuman() && Patch_RJW_BasePregnancy_VanillaExpandedGenetics.supportedInitialAnimalRaces.Contains(mother.kindDef.race.defName);
+            bool humanFatherAndSupportedHybrid = father.IsHuman() && Patch_RJW_BasePregnancy_VanillaExpandedGenetics.supportedHybridRaces.Contains(mother.kindDef.race.defName);
+
+            if (!(humanMotherAndSupportedAnimal || humanMotherAndSupportedHybrid||humanFatherAndSupportedAnimal|| humanFatherAndSupportedHybrid)) return true;
+            if (humanMotherAndSupportedAnimal)
+            {
+                Hediff_BasePregnancy.Create<Hediff_BestialPregnancy>(mother, father, DnaGivingParent.Father);
+                return false;
+            }
+            else if (humanMotherAndSupportedHybrid)
+            {
+                if (RJW_Genes_Settings.rjw_genes_detailed_debug)
+                    RJW_Genes.ModLog.Message("preg hediffdefof PregnantHuman " + RimWorld.HediffDefOf.PregnantHuman);
+                
+                PregnancyHelper.StartVanillaPregnancy(mother, father);
+                return false;
+            }
+            else if (humanFatherAndSupportedAnimal)
+            {
+                Hediff_BasePregnancy.Create<Hediff_BestialPregnancy>(mother, father, DnaGivingParent.Mother);
+                return false;
+            }
+            else if (humanFatherAndSupportedHybrid)
+            {
+                Hediff_BasePregnancy.Create<Hediff_BestialPregnancy>(mother, father, DnaGivingParent.Father);
+                return false;
+            }
+            return true;
+        }
+
+    }
+}