Fixed #2 by checking if pawn is already a futa before adding extra genitalia

CHANGELOG.md

@@ -15,6 +15,7 @@ Fixes:
 
 - Issue with Breast-Size (#8) fixed by lowercasing breast-match (Shabakur) 
 - Error on Game Load when Licentia Genes are tried to be added to Xenotypes for players without Licentia (#5)
+- Futa Gene only triggers if Pawn is not a futa already (#2)
 
 # 1.0.1 (2022-12-20)
 

Source/Genes/ExtraGenitalia/Gene_Futa.cs

@@ -13,6 +13,12 @@ namespace RJW_Genes
         {
             base.PostMake();
 
+            // If the Pawn is already a Futa, do not do anything. Can Happen by Base-RJW Spawn Chance or potentially races / other mods. 
+            if (IsAlreadyFuta(pawn))
+            {
+                return;
+            }
+
             if (GenderUtility.IsFemale(pawn) && additional_genital == null)
             {
                 createAndAddPenis();
@@ -27,6 +33,12 @@ namespace RJW_Genes
         {
             base.PostAdd();
 
+            // If the Pawn is already a Futa, do not do anything. Can Happen by Base-RJW Spawn Chance or potentially races / other mods. 
+            if (IsAlreadyFuta(pawn))
+            {
+                return;
+            }
+
             if (pawn.gender == Gender.Female && additional_genital == null)
             {
                 createAndAddPenis();
@@ -79,5 +91,15 @@ namespace RJW_Genes
             pawn.health.AddHediff(additional_genital, partBPR);
         }
 
+        private static bool IsAlreadyFuta(Pawn pawn)
+        {
+            if (pawn == null)
+                return false;
+            if (!Genital_Helper.has_genitals(pawn))
+                return false;
+            return 
+                (Genital_Helper.has_penis_fertile(pawn) || Genital_Helper.has_penis_infertile(pawn)) 
+                && Genital_Helper.has_vagina(pawn) ;
+        }
     }
 }