Refactor breast CalculateLastBirth

1.3/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Breast.cs

@@ -210,25 +210,16 @@ namespace RJW_Menstruation
         protected long CalculateLastBirth()
         {
             long youngestAge = (long)(BabyHalfAge * GenDate.TicksPerYear) * -2; // So a newborn isn't considered a new mother, either
-            if ((Pawn.relations?.ChildrenCount ?? 0) > 0)
-            {
-                foreach (Pawn child in Pawn.relations.Children)
-                {
-                    bool isFetus = false;
-                    if (Pawn.health.hediffSet.GetHediffs<Hediff_BasePregnancy>().Any(preg => preg.babies.Contains(child)))
-                    {
-                        isFetus = true;
-                        break;
-                    }
-                    
-                    if (
-                        Pawn.ageTracker.BirthAbsTicks - child.ageTracker.BirthAbsTicks > ageOfLastBirth &&
-                        !isFetus &&
-                        child.GetMother() == Pawn                        // Don't do Dad's boobs
-                        )
-                        youngestAge = Pawn.ageTracker.BirthAbsTicks - child.ageTracker.BirthAbsTicks;
-                }
-            }
+
+            if ((Pawn.relations == null)) return youngestAge;
+
+            bool hasChild = Pawn.relations.Children.
+                Where(child => !Pawn.health.hediffSet.GetHediffs<Hediff_BasePregnancy>().Any(preg => preg.babies.Contains(child))). // no fetuses
+                Where(child => child.GetMother() == Pawn).  // not Dad
+                TryMinBy(child => child.ageTracker.AgeBiologicalTicks, out Pawn youngest);
+
+            if (hasChild) youngestAge = Pawn.ageTracker.AgeBiologicalTicks - youngest.ageTracker.AgeBiologicalTicks;
+
             return youngestAge;
         }
 
@@ -337,6 +328,11 @@ namespace RJW_Menstruation
             }
         }
 
+        public void GaveBirth()
+        {
+            ageOfLastBirth = Pawn.ageTracker.AgeBiologicalTicks;
+        }
+
         public void AdjustNippleProgress(float amount)
         {
             nippleProgress = Mathf.Clamp01(nippleProgress + amount);

1.3/source/RJW_Menstruation/RJW_Menstruation/Hediff_MultiplePregnancy.cs

@@ -72,6 +72,7 @@ namespace RJW_Menstruation
             pawn.health.RemoveHediff(this);
             HediffComp_Menstruation comp = this.GetMenstruationComp();
             if(comp != null) comp.Pregnancy = null;
+            pawn.GetBreastComp()?.GaveBirth();
         }
 
         public string GetBabyInfo()