VulnerabilityPatcher/src/main/java/me/cooljwb/vulnerabilitypatcher/patches/Follow_Range.java

package me.cooljwb.vulnerabilitypatcher.patches;

import org.apache.commons.lang.builder.ReflectionToStringBuilder;
import org.bukkit.attribute.Attribute;
import org.bukkit.entity.LivingEntity;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntitySpawnEvent;

import java.util.logging.Level;
import java.util.logging.Logger;

/*
 * Copyright 2019 CoolJWB
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @author CoolJWB
 */

public class Follow_Range extends Patches implements Listener {

    private Logger log = Logger.getLogger("Minecraft");

    @EventHandler(priority = EventPriority.HIGHEST)
    public void onEntitySpawnEvent(EntitySpawnEvent event) {
        if (event.getEntity() != null && event.getEntity() instanceof LivingEntity) {
            LivingEntity entity = (LivingEntity) event.getEntity();
            if (entity.getAttribute(Attribute.GENERIC_FOLLOW_RANGE) != null) {
                double followrange = entity.getAttribute(Attribute.GENERIC_FOLLOW_RANGE).getBaseValue();

                if (followrange >= 128)
                    entity.getAttribute(Attribute.GENERIC_FOLLOW_RANGE).setBaseValue(entity.getAttribute(Attribute.GENERIC_FOLLOW_RANGE).getDefaultValue());
            }
        }

        if(devmode)
            log.log(Level.INFO, String.format("[%s] Event: %s", pluginName, ReflectionToStringBuilder.toString(event)));
    }
}