PaperMC/nms-patches/EntityVillager.patch

--- a/net/minecraft/server/EntityVillager.java
+++ b/net/minecraft/server/EntityVillager.java
@@ -16,6 +16,16 @@
 import java.util.function.BiPredicate;
 import java.util.stream.Collectors;
 import javax.annotation.Nullable;
+// CraftBukkit start
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.entity.CraftVillager;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.craftbukkit.inventory.CraftMerchantRecipe;
+import org.bukkit.entity.Villager;
+import org.bukkit.event.entity.EntityTransformEvent;
+import org.bukkit.event.entity.VillagerAcquireTradeEvent;
+import org.bukkit.event.entity.VillagerReplenishTradeEvent;
+// CraftBukkit end
 
 public class EntityVillager extends EntityVillagerAbstract implements ReputationHandler, VillagerDataHolder {
 
@@ -60,7 +70,7 @@
 
     @Override
     public BehaviorController<EntityVillager> getBehaviorController() {
-        return super.getBehaviorController();
+        return (BehaviorController<EntityVillager>) super.getBehaviorController(); // CraftBukkit - decompile error
     }
 
     @Override
@@ -124,7 +134,7 @@
     @Override
     protected void mobTick() {
         this.world.getMethodProfiler().enter("brain");
-        this.getBehaviorController().a((WorldServer) this.world, (EntityLiving) this);
+        this.getBehaviorController().a((WorldServer) this.world, this); // CraftBukkit - decompile error
         this.world.getMethodProfiler().exit();
         if (!this.et() && this.bB > 0) {
             --this.bB;
@@ -134,7 +144,7 @@
                     this.bC = 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
             }
         }
 
@@ -353,7 +363,14 @@
             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
             }
         }
 
@@ -658,7 +675,12 @@
             entitywitch.setCustomNameVisible(this.getCustomNameVisible());
         }
 
-        this.world.addEntity(entitywitch);
+        // CraftBukkit start
+        if (CraftEventFactory.callEntityTransformEvent(this, entitywitch, EntityTransformEvent.TransformReason.LIGHTNING).isCancelled()) {
+            return;
+        }
+        this.world.addEntity(entitywitch, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.LIGHTNING);
+        // CraftBukkit end
         this.die();
     }
 
@@ -808,7 +830,7 @@
     }
 
     private void b(long i) {
-        this.bo.setMemory(MemoryModuleType.GOLEM_LAST_SEEN_TIME, (Object) i);
+        this.bo.setMemory(MemoryModuleType.GOLEM_LAST_SEEN_TIME, i); // CraftBukkit - decompile error
     }
 
     private boolean c(long i) {
@@ -857,7 +879,7 @@
 
                 if (entityirongolem != null) {
                     if (entityirongolem.a((GeneratorAccess) this.world, EnumMobSpawn.MOB_SUMMONED) && entityirongolem.a((IWorldReader) this.world)) {
-                        this.world.addEntity(entityirongolem);
+                        this.world.addEntity(entityirongolem, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.VILLAGE_DEFENSE); // CraftBukkit
                         return entityirongolem;
                     }
 
@@ -919,13 +941,13 @@
     @Override
     public void entitySleep(BlockPosition blockposition) {
         super.entitySleep(blockposition);
-        this.bo.setMemory(MemoryModuleType.LAST_SLEPT, (Object) MinecraftSerializableLong.a(this.world.getTime()));
+        this.bo.setMemory(MemoryModuleType.LAST_SLEPT, MinecraftSerializableLong.a(this.world.getTime())); // CraftBukkit - decompile error
     }
 
     @Override
     public void entityWakeup() {
         super.entityWakeup();
-        this.bo.setMemory(MemoryModuleType.LAST_WOKEN, (Object) MinecraftSerializableLong.a(this.world.getTime()));
+        this.bo.setMemory(MemoryModuleType.LAST_WOKEN, MinecraftSerializableLong.a(this.world.getTime())); // CraftBukkit - decompile error
     }
 
     private boolean d(long i) {