public static boolean canEntityBeSeen(EntityLivingBase entity) {
		float maxSeenBound = 20f;
		List<Entity> entityList = entity.worldObj.getEntitiesWithinAABBExcludingEntity(entity, new AxisAlignedBB(entity.posX - maxSeenBound, entity.posY, entity.posZ - maxSeenBound, entity.posX + maxSeenBound, entity.posY + maxSeenBound, entity.posZ + maxSeenBound));

		for(int i = 0; i < entityList.size(); i++) {
			if(entityList.get(i) instanceof EntityMob) {
				EntityMob mobEntity = (EntityMob) entityList.get(i);
				Vec3d entityLookVec = entity.getLook(1.0f).normalize();
				Vec3d distanceVec = new Vec3d(entity.posX - mobEntity.posX, entity.posY - mobEntity.posY, entity.posZ - mobEntity.posZ);
				double d0 = entityLookVec.lengthVector();
				distanceVec = distanceVec.normalize();
				double d1 = entityLookVec.dotProduct(distanceVec);

				return d1 > 1.0D - 0.025D / d0 ? mobEntity.canEntityBeSeen(entity) : false;
			}
		}

		return false;
	}