--- a/net/minecraft/world/entity/animal/allay/Allay.java
+++ b/net/minecraft/world/entity/animal/allay/Allay.java
@@ -99,6 +99,7 @@
     private float dancingAnimationTicks;
     private float spinningAnimationTicks;
     private float spinningAnimationTicks0;
+    public boolean forceDancing = false; // CraftBukkit
 
     public Allay(EntityTypes<? extends Allay> entitytypes, World world) {
         super(entitytypes, world);
@@ -110,6 +111,12 @@
         this.dynamicJukeboxListener = new DynamicGameEventListener<>(new Allay.a(this.vibrationUser.getPositionSource(), ((GameEvent) GameEvent.JUKEBOX_PLAY.value()).notificationRadius()));
     }
 
+    // CraftBukkit start
+    public void setCanDuplicate(boolean canDuplicate) {
+        this.entityData.set(Allay.DATA_CAN_DUPLICATE, canDuplicate);
+    }
+    // CraftBukkit end
+
     @Override
     protected BehaviorController.b<Allay> brainProvider() {
         return BehaviorController.provider(Allay.MEMORY_TYPES, Allay.SENSOR_TYPES);
@@ -122,7 +129,7 @@
 
     @Override
     public BehaviorController<Allay> getBrain() {
-        return super.getBrain();
+        return (BehaviorController<Allay>) super.getBrain(); // CraftBukkit - decompile error
     }
 
     public static AttributeProvider.Builder createAttributes() {
@@ -223,7 +230,7 @@
     public void aiStep() {
         super.aiStep();
         if (!this.level().isClientSide && this.isAlive() && this.tickCount % 10 == 0) {
-            this.heal(1.0F);
+            this.heal(1.0F, org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason.REGEN); // CraftBukkit
         }
 
         if (this.isDancing() && this.shouldStopDancing() && this.tickCount % 20 == 0) {
@@ -293,7 +300,12 @@
         ItemStack itemstack1 = this.getItemInHand(EnumHand.MAIN_HAND);
 
         if (this.isDancing() && this.isDuplicationItem(itemstack) && this.canDuplicate()) {
-            this.duplicateAllay();
+            // CraftBukkit start - handle cancel duplication
+            Allay allay = this.duplicateAllay();
+            if (allay == null) {
+                return EnumInteractionResult.SUCCESS;
+            }
+            // CraftBukkit end
             this.level().broadcastEntityEvent(this, (byte) 18);
             this.level().playSound(entityhuman, (Entity) this, SoundEffects.AMETHYST_BLOCK_CHIME, SoundCategory.NEUTRAL, 2.0F, 1.0F);
             this.removeInteractionItem(entityhuman, itemstack);
@@ -304,7 +316,7 @@
             this.setItemInHand(EnumHand.MAIN_HAND, itemstack2);
             this.removeInteractionItem(entityhuman, itemstack);
             this.level().playSound(entityhuman, (Entity) this, SoundEffects.ALLAY_ITEM_GIVEN, SoundCategory.NEUTRAL, 2.0F, 1.0F);
-            this.getBrain().setMemory(MemoryModuleType.LIKED_PLAYER, (Object) entityhuman.getUUID());
+            this.getBrain().setMemory(MemoryModuleType.LIKED_PLAYER, entityhuman.getUUID()); // CraftBukkit - decompile error
             return EnumInteractionResult.SUCCESS;
         } else if (!itemstack1.isEmpty() && enumhand == EnumHand.MAIN_HAND && itemstack.isEmpty()) {
             this.setItemSlot(EnumItemSlot.MAINHAND, ItemStack.EMPTY);
@@ -405,6 +417,7 @@
     }
 
     private boolean shouldStopDancing() {
+        if (this.forceDancing) {return false;} // CraftBukkit
         return this.jukeboxPos == null || !this.jukeboxPos.closerToCenterThan(this.position(), (double) ((GameEvent) GameEvent.JUKEBOX_PLAY.value()).notificationRadius()) || !this.level().getBlockState(this.jukeboxPos).is(Blocks.JUKEBOX);
     }
 
@@ -449,7 +462,7 @@
     public void addAdditionalSaveData(NBTTagCompound nbttagcompound) {
         super.addAdditionalSaveData(nbttagcompound);
         this.writeInventoryToTag(nbttagcompound, this.registryAccess());
-        DataResult dataresult = VibrationSystem.a.CODEC.encodeStart(DynamicOpsNBT.INSTANCE, this.vibrationData);
+        DataResult<net.minecraft.nbt.NBTBase> dataresult = VibrationSystem.a.CODEC.encodeStart(DynamicOpsNBT.INSTANCE, this.vibrationData); // CraftBukkit - decompile error
         Logger logger = Allay.LOGGER;
 
         Objects.requireNonNull(logger);
@@ -465,7 +478,7 @@
         super.readAdditionalSaveData(nbttagcompound);
         this.readInventoryFromTag(nbttagcompound, this.registryAccess());
         if (nbttagcompound.contains("listener", 10)) {
-            DataResult dataresult = VibrationSystem.a.CODEC.parse(new Dynamic(DynamicOpsNBT.INSTANCE, nbttagcompound.getCompound("listener")));
+            DataResult<VibrationSystem.a> dataresult = VibrationSystem.a.CODEC.parse(new Dynamic(DynamicOpsNBT.INSTANCE, nbttagcompound.getCompound("listener"))); // CraftBukkit - decompile error
             Logger logger = Allay.LOGGER;
 
             Objects.requireNonNull(logger);
@@ -498,7 +511,7 @@
         return Allay.DUPLICATION_ITEM.test(itemstack);
     }
 
-    public void duplicateAllay() {
+    public Allay duplicateAllay() { // CraftBukkit - return allay
         Allay allay = (Allay) EntityTypes.ALLAY.create(this.level());
 
         if (allay != null) {
@@ -506,9 +519,9 @@
             allay.setPersistenceRequired();
             allay.resetDuplicationCooldown();
             this.resetDuplicationCooldown();
-            this.level().addFreshEntity(allay);
+            this.level().addFreshEntity(allay, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.DUPLICATION); // CraftBukkit - reason for duplicated allay
         }
-
+        return allay; // CraftBukkit
     }
 
     public void resetDuplicationCooldown() {