SPIGOT-4338: breedCause API

nms-patches/EntityAnimal.patch

@@ -1,9 +1,11 @@
 --- a/net/minecraft/server/EntityAnimal.java
 +++ b/net/minecraft/server/EntityAnimal.java
-@@ -8,6 +8,7 @@
+@@ -7,7 +7,8 @@
+ 
      protected Block bF;
      private int bC;
-     private UUID bD;
+-    private UUID bD;
++    public UUID bD; // PAIL
 +    public ItemStack breedItem; // CraftBukkit - Add breedItem variable
  
      protected EntityAnimal(EntityTypes<?> entitytypes, World world) {

src/main/java/org/bukkit/craftbukkit/entity/CraftAnimals.java

@@ -1,5 +1,6 @@
 package org.bukkit.craftbukkit.entity;
 
+import java.util.UUID;
 import net.minecraft.server.EntityAnimal;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.entity.Animals;
@@ -19,4 +20,14 @@ public class CraftAnimals extends CraftAgeable implements Animals {
     public String toString() {
         return "CraftAnimals";
     }
+
+    @Override
+    public UUID getBreedCause() {
+        return getHandle().bD;
+    }
+
+    @Override
+    public void setBreedCause(UUID uuid) {
+        getHandle().bD = uuid;
+    }
 }