SPIGOT-4219: Event for PigZombies angering.

nms-patches/EntityPigZombie.patch

@@ -1,6 +1,6 @@
 --- a/net/minecraft/server/EntityPigZombie.java
 +++ b/net/minecraft/server/EntityPigZombie.java
-@@ -113,11 +113,15 @@
+@@ -113,16 +113,27 @@
          } else {
              Entity entity = damagesource.getEntity();
  
@@ -18,3 +18,16 @@
          }
      }
  
+     private void a(Entity entity) {
+-        this.angerLevel = 400 + this.random.nextInt(400);
++        // CraftBukkit start
++        org.bukkit.event.entity.PigZombieAngerEvent event = new org.bukkit.event.entity.PigZombieAngerEvent((org.bukkit.entity.PigZombie) this.getBukkitEntity(), (entity == null) ? null : entity.getBukkitEntity(), 400 + this.random.nextInt(400));
++        this.world.getServer().getPluginManager().callEvent(event);
++        if (event.isCancelled()) {
++            return;
++        }
++        this.angerLevel = event.getNewAnger();
++        // CraftBukkit end
+         this.soundDelay = this.random.nextInt(40);
+         if (entity instanceof EntityLiving) {
+             this.a((EntityLiving) entity);