public static Result canEntitySpawn(MobEntity entity, IWorld world, double x, double y, double z, MobSpawnerLogic spawner, SpawnType spawnType) {
	if (entity == null) {
		return Result.DEFAULT;
	}

	LivingSpawnEvent.CheckSpawn event = new LivingSpawnEvent.CheckSpawn(entity, world, x, y, z, spawner, spawnType);
	MinecraftForge.EVENT_BUS.post(event);
	return event.getResult();
}
 

@SubscribeEvent
public static void onEntitySpawn(LivingSpawnEvent.SpecialSpawn event) {
    EntityLivingBase entity = event.getEntityLiving();
    EnumDifficulty difficulty = entity.world.getDifficulty();
    if (difficulty == EnumDifficulty.HARD && entity.getRNG().nextFloat() <= 0.03f) {
        if (entity instanceof EntityZombie) {
            ItemStack itemStack = MetaItems.NANO_SABER.getInfiniteChargedStack();
            ToggleEnergyConsumerBehavior.setItemActive(itemStack, true);
            entity.setItemStackToSlot(EntityEquipmentSlot.MAINHAND, itemStack);
            ((EntityZombie) entity).setDropChance(EntityEquipmentSlot.MAINHAND, 0.0f);
        }
    }
}
 

@SubscribeEvent
public void on(LivingSpawnEvent.CheckSpawn event) {
    if(event.entityLiving.isCreatureType(EnumCreatureType.monster, false)) {
        double rangeSq = AuraEffects.LUX.getRange() * AuraEffects.LUX.getRange();
        Vector3 entityPos = MiscUtils.getPositionVector(event.entity);
        for(ChunkCoordinates luxPylons : registeredLuxPylons) {
            Vector3 pylon = Vector3.fromCC(luxPylons);
            if(entityPos.distanceSquared(pylon) <= rangeSq) {
                event.setResult(Event.Result.DENY);
                return;
            }
        }
    }
}
 

@SubscribeEvent
public void checkSpawn(LivingSpawnEvent.CheckSpawn ev) {
    if (ev.getResult() == Event.Result.DENY) {
        return;
    }

    if(ProtectionManager.checkExist(ev.entity, true)) {
        ev.setResult(Event.Result.DENY);
    }
}
 

private void spawnCat(Point3i spawnLoc) {
  EntityWitherCat cat = new EntityWitherCat(world);
  cat.onInitialSpawn(world.getDifficultyForLocation(new BlockPos(this)), null);
  cat.setOwner(this);
  cat.setPositionAndRotation(spawnLoc.x + 0.5, spawnLoc.y + 0.5, spawnLoc.z + 0.5, rotationYaw, 0);
  if (MinecraftForge.EVENT_BUS.post(new LivingSpawnEvent.CheckSpawn(cat, world, (float)cat.posX, (float)cat.posY, (float)cat.posZ, false))) {
    return;
  }
  if(!cat.getCanSpawnHere()) {
    return;
  }
  cats.add(cat);
  world.spawnEntity(cat);
}
 

public static boolean doSpecialSpawn(MobEntity entity, IWorld world, double x, double y, double z, MobSpawnerLogic spawner, SpawnType spawnType) {
	return MinecraftForge.EVENT_BUS.post(new LivingSpawnEvent.SpecialSpawn(entity, world, x, y, z, spawner, spawnType));
}
 

@SubscribeEvent
public void specialSpawn(LivingSpawnEvent.SpecialSpawn ev) {
    if (ev.isCanceled()) return;

    ProtectionManager.checkExist(ev.entity, true);
}
 

@SubscribeEvent
public void onMonsterSpawn(LivingSpawnEvent evt) {
  if (evt.getEntityLiving() != null) { //&& !evt.entityLiving.getClass().getName().contains("enderzoo")) {
          evt.setResult(Result.DENY);
  }
}