public EntityPlayer getClosestVulnerablePlayer(double p_72846_1_, double p_72846_3_, double p_72846_5_, double p_72846_7_)
    {
        double d4 = -1.0D;
        EntityPlayer entityplayer = null;

        for (int i = 0; i < this.playerEntities.size(); ++i)
        {
            EntityPlayer entityplayer1 = (EntityPlayer)this.playerEntities.get(i);

            if (!entityplayer1.capabilities.disableDamage && entityplayer1.isEntityAlive())
            {
                double d5 = entityplayer1.getDistanceSq(p_72846_1_, p_72846_3_, p_72846_5_);
                double d6 = p_72846_7_;

                if (entityplayer1.isSneaking())
                {
                    d6 = p_72846_7_ * 0.800000011920929D;
                }

                if (entityplayer1.isInvisible())
                {
                    float f = entityplayer1.getArmorVisibility();

                    if (f < 0.1F)
                    {
                        f = 0.1F;
                    }

                    d6 *= (double)(0.7F * f);
                }

                if ((p_72846_7_ < 0.0D || d5 < d6 * d6) && (d4 == -1.0D || d5 < d4))
                {
                    d4 = d5;
                    entityplayer = entityplayer1;
                }
            }
        }

        return entityplayer;
    }