Disable breast growth for ageless pawns to prevent them from getting stuck at max size post-birth.

1.4/Languages/English/Keyed/RJW_Menstruation.xml

@@ -57,7 +57,7 @@
   <Option7_Label>Cycle acceleration</Option7_Label>
   <Option7_Desc>Accelerate menstruation cycle&#10;This can cause early menopause and infertility.&#10;Setting this lower than x12 is recommended.&#10;Rimworld's timescale: x6(default)</Option7_Desc>
   <Option8_Label>Debug</Option8_Label>
-  <Option8_Desc>Show debug information.&#10;Also overrides "Fetus information level" to All.</Option8_Desc>
+  <Option8_Desc>Show debug information.</Option8_Desc>
   <Option9_Label>Womb status</Option9_Label>
   <Option9_Desc>Draw womb icon in status window.</Option9_Desc>
   <Option10_Label>Vagina and breast status</Option10_Label>
@@ -68,7 +68,7 @@
   <Option11_Desc_3>Show only image of a fetus after discovered pregnancy.</Option11_Desc_3>
   <Option11_Desc_4>Do not show any information about a fetus.</Option11_Desc_4>
   <Option12_Label>Enable menopause</Option12_Label>
-  <Option12_Desc>Enable menopause effect that makes pawn infertile in time progress&#10;If you have problems with long life races, turn off this option.</Option12_Desc>
+  <Option12_Desc>Enable menopause effect that makes pawn infertile when they run out of eggs&#10;If you have problems with long lived races, turn off this option.</Option12_Desc>
   <Option13_Label>Use multiple pregnancy</Option13_Label>
   <Option13_Desc>Use multiple pregnancy instead RJW's default pregnancy&#10;Disable this option if you are in trouble with impregnation&#10;RJW pregnancy should be turned on.</Option13_Desc>
   <Option14_Label>Enable hetero ovular twins</Option14_Label>

1.4/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Breast.cs

@@ -246,8 +246,14 @@ namespace RJW_Menstruation
 
         protected void CalculateBreastSize()
         {
-            // Scenario A: the youngest child is less than halfway into babyhood: Full size
+            // Ageless pawns can't depend on the chrono age, so just disable their growth entirely
-            if (ageOfLastBirth + BabyHalfAge * GenDate.TicksPerYear > Pawn.ageTracker.AgeBiologicalTicks)
+            if (Pawn.ageTracker.BiologicalTicksPerTick <= 0f && breastSizeIncreased > 0)
+            {
+                ShrinkBreasts();
+                debugGrowthStatus = "Base size (ageless)";
+            }
+            // The youngest child is less than halfway into babyhood: Full size
+            else if (ageOfLastBirth + BabyHalfAge * GenDate.TicksPerYear > Pawn.ageTracker.AgeBiologicalTicks)
             {
                 debugGrowthStatus = "Full size due to young child";
                 if (breastSizeIncreased < MaxBreastIncrement)
@@ -256,7 +262,7 @@ namespace RJW_Menstruation
                     breastSizeIncreased = MaxBreastIncrement;
                 }
             }
-            // Scenario B: Pregnant, grow in the second half of first trimester
+            // Pregnant, grow in the second half of first trimester
             else if (Pawn.IsRJWPregnant() || Pawn.IsBiotechPregnant())
             {
                 float pregnancySize = Mathf.InverseLerp(breastGrowthStart, breastGrowthEnd, Pawn.GetFarthestPregnancyProgress()) * MaxBreastIncrement;
@@ -279,7 +285,7 @@ namespace RJW_Menstruation
                 }
                 else debugGrowthStatus = "Pregnant and full size";
             }
-            // Scenario C: Not (or very early) pregnant and youngest child nonexistent or more than halfway into babyhood, time to shrink
+            // Not (or very early) pregnant and youngest child nonexistent or more than halfway into babyhood, time to shrink
             else if (breastSizeIncreased > 0)
             {
                 debugGrowthStatus = "Shrinking due to no pregnancy nor young child";
@@ -291,7 +297,9 @@ namespace RJW_Menstruation
         protected void CalculateNipples()
         {
             float newNippleProgress;
-            if (ageOfLastBirth + BabyHalfAge * GenDate.TicksPerYear > Pawn.ageTracker.AgeBiologicalTicks)
+            if (Pawn.ageTracker.BiologicalTicksPerTick <= 0f)
+                newNippleProgress = 0f;
+            else if (ageOfLastBirth + BabyHalfAge * GenDate.TicksPerYear > Pawn.ageTracker.AgeBiologicalTicks)
                 newNippleProgress = 1f;
             else if (Pawn.IsRJWPregnant() || Pawn.IsBiotechPregnant())
                 newNippleProgress = nippleTransitions.Evaluate(Pawn.GetFarthestPregnancyProgress());

changelogs.txt

@@ -5,6 +5,7 @@ Version 1.0.8.5
  - Some males will release small amounts of semen into a womb during vaginal sex before their actual ejaculation.
  - Babies born from multiple pregnancy will properly produce the prompt to name them.
  - Hopefully improve compatibility with xenotype inhertiance-altering mods for multiple pregnancy.
+ - Pawns that have stopped aging will no longer have larger breasts during and after pregnancy.
  - Experimental "periodic ovulator" cycle type, currently not used. See Patches/Hediffs_Private_Parts_Animal.xml.
 
 Version 1.0.8.4