PaperMC/paper-server/nms-patches/net/minecraft/world/entity/npc/EntityVillager.patch

--- a/net/minecraft/world/entity/npc/EntityVillager.java
+++ b/net/minecraft/world/entity/npc/EntityVillager.java
@@ -93,6 +93,14 @@
 import net.minecraft.world.phys.AxisAlignedBB;
 import org.apache.logging.log4j.Logger;
 
+// CraftBukkit start
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.entity.Villager;
+import org.bukkit.event.entity.EntityTransformEvent;
+import org.bukkit.event.entity.VillagerReplenishTradeEvent;
+// CraftBukkit end
+
 public class EntityVillager extends EntityVillagerAbstract implements ReputationHandler, VillagerDataHolder {
 
     private static final DataWatcherObject<VillagerData> DATA_VILLAGER_DATA = DataWatcher.a(EntityVillager.class, DataWatcherRegistry.VILLAGER_DATA);
@@ -150,7 +158,7 @@
 
     @Override
     public BehaviorController<EntityVillager> getBehaviorController() {
-        return super.getBehaviorController();
+        return (BehaviorController<EntityVillager>) super.getBehaviorController(); // CraftBukkit - decompile error
     }
 
     @Override
@@ -169,7 +177,7 @@
     public void c(WorldServer worldserver) {
         BehaviorController<EntityVillager> behaviorcontroller = this.getBehaviorController();
 
-        behaviorcontroller.b(worldserver, (EntityLiving) this);
+        behaviorcontroller.b(worldserver, this); // CraftBukkit - decompile error
         this.brain = behaviorcontroller.h();
         this.a(this.getBehaviorController());
     }
@@ -219,7 +227,7 @@
     @Override
     protected void mobTick() {
         this.level.getMethodProfiler().enter("villagerBrain");
-        this.getBehaviorController().a((WorldServer) this.level, (EntityLiving) this);
+        this.getBehaviorController().a((WorldServer) this.level, this); // CraftBukkit - decompile error
         this.level.getMethodProfiler().exit();
         if (this.assignProfessionWhenSpawned) {
             this.assignProfessionWhenSpawned = false;
@@ -233,7 +241,7 @@
                     this.increaseProfessionLevelOnUpdate = false;
                 }
 
-                this.addEffect(new MobEffect(MobEffects.REGENERATION, 200, 0));
+                this.addEffect(new MobEffect(MobEffects.REGENERATION, 200, 0), org.bukkit.event.entity.EntityPotionEffectEvent.Cause.VILLAGER_TRADE); // CraftBukkit
             }
         }
 
@@ -444,7 +452,14 @@
             while (iterator.hasNext()) {
                 MerchantRecipe merchantrecipe = (MerchantRecipe) iterator.next();
 
-                merchantrecipe.increaseSpecialPrice(-MathHelper.d((float) i * merchantrecipe.getPriceMultiplier()));
+                // CraftBukkit start
+                int bonus = -MathHelper.d((float) i * merchantrecipe.getPriceMultiplier());
+                VillagerReplenishTradeEvent event = new VillagerReplenishTradeEvent((Villager) this.getBukkitEntity(), merchantrecipe.asBukkit(), bonus);
+                Bukkit.getPluginManager().callEvent(event);
+                if (!event.isCancelled()) {
+                    merchantrecipe.increaseSpecialPrice(event.getBonus());
+                }
+                // CraftBukkit end
             }
         }
 
@@ -473,7 +488,7 @@
     @Override
     public void saveData(NBTTagCompound nbttagcompound) {
         super.saveData(nbttagcompound);
-        DataResult dataresult = VillagerData.CODEC.encodeStart(DynamicOpsNBT.INSTANCE, this.getVillagerData());
+        DataResult<NBTBase> dataresult = VillagerData.CODEC.encodeStart(DynamicOpsNBT.INSTANCE, this.getVillagerData()); // CraftBukkit - decompile error
         Logger logger = EntityVillager.LOGGER;
 
         Objects.requireNonNull(logger);
@@ -813,7 +828,12 @@
             }
 
             entitywitch.setPersistent();
-            worldserver.addAllEntities(entitywitch);
+            // CraftBukkit start
+            if (CraftEventFactory.callEntityTransformEvent(this, entitywitch, EntityTransformEvent.TransformReason.LIGHTNING).isCancelled()) {
+                return;
+            }
+            worldserver.addAllEntities(entitywitch, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.LIGHTNING);
+            // CraftBukkit end
             this.fZ();
             this.die();
         } else {
@@ -834,6 +854,13 @@
                 return;
             }
 
+            // CraftBukkit start
+            ItemStack remaining = new InventorySubcontainer(inventorysubcontainer).a(itemstack);
+            if (CraftEventFactory.callEntityPickupItemEvent(this, entityitem, remaining.getCount(), false).isCancelled()) {
+                return;
+            }
+            // CraftBukkit end
+
             this.a(entityitem);
             this.receive(entityitem, itemstack.getCount());
             ItemStack itemstack1 = inventorysubcontainer.a(itemstack);
@@ -946,7 +973,7 @@
 
                 if (entityirongolem != null) {
                     if (entityirongolem.a((GeneratorAccess) worldserver, EnumMobSpawn.MOB_SUMMONED) && entityirongolem.a((IWorldReader) worldserver)) {
-                        worldserver.addAllEntities(entityirongolem);
+                        worldserver.addAllEntities(entityirongolem, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.VILLAGE_DEFENSE); // CraftBukkit
                         return entityirongolem;
                     }
 
@@ -1024,7 +1051,7 @@
     @Override
     public void entitySleep(BlockPosition blockposition) {
         super.entitySleep(blockposition);
-        this.brain.setMemory(MemoryModuleType.LAST_SLEPT, (Object) this.level.getTime());
+        this.brain.setMemory(MemoryModuleType.LAST_SLEPT, this.level.getTime()); // CraftBukkit - decompile error
         this.brain.removeMemory(MemoryModuleType.WALK_TARGET);
         this.brain.removeMemory(MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE);
     }
@@ -1032,7 +1059,7 @@
     @Override
     public void entityWakeup() {
         super.entityWakeup();
-        this.brain.setMemory(MemoryModuleType.LAST_WOKEN, (Object) this.level.getTime());
+        this.brain.setMemory(MemoryModuleType.LAST_WOKEN, this.level.getTime()); // CraftBukkit - decompile error
     }
 
     private boolean b(long i) {