mcMMO/src/main/java/com/gmail/nossr50/skills/archery/Archery.java

package com.gmail.nossr50.skills.archery;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.bukkit.Material;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;

import com.gmail.nossr50.config.AdvancedConfig;
import com.gmail.nossr50.skills.utilities.SkillTools;
import com.gmail.nossr50.skills.utilities.SkillType;
import com.gmail.nossr50.util.Misc;
import com.gmail.nossr50.util.Permissions;

public class Archery {
    private static List<TrackedEntity> trackedEntities = new ArrayList<TrackedEntity>();

    public static int retrieveMaxBonusLevel = AdvancedConfig.getInstance().getRetrieveMaxBonusLevel();
    public static double retrieveMaxChance = AdvancedConfig.getInstance().getRetrieveChanceMax();

    public static int skillShotIncreaseLevel = AdvancedConfig.getInstance().getSkillShotIncreaseLevel();
    public static double skillShotIncreasePercentage = AdvancedConfig.getInstance().getSkillShotIncreasePercentage();
    public static double skillShotMaxBonusPercentage = AdvancedConfig.getInstance().getSkillShotBonusMax();

    public static int dazeMaxBonusLevel = AdvancedConfig.getInstance().getDazeMaxBonusLevel();
    public static double dazeMaxBonus = AdvancedConfig.getInstance().getDazeBonusMax();
    public static int dazeModifier = AdvancedConfig.getInstance().getDazeModifier();

    public static double distanceXpModifer = 0.025;

    public static boolean canDaze(Player player, LivingEntity target) {
        return target instanceof Player && Permissions.daze(player);
    }

    public static boolean canSkillShot(Player player) {
        return SkillTools.unlockLevelReached(player, SkillType.ARCHERY, skillShotIncreaseLevel) && Permissions.bonusDamage(player, SkillType.ARCHERY);
    }

    public static boolean canTrackArrows(Player player) {
        return !(player.getItemInHand().containsEnchantment(Enchantment.ARROW_INFINITE)) && Permissions.arrowRetrieval(player);
    }

    protected static void incrementTrackerValue(LivingEntity livingEntity) {
        for (TrackedEntity trackedEntity : trackedEntities) {
            if (trackedEntity.getLivingEntity().getEntityId() == livingEntity.getEntityId()) {
                trackedEntity.incrementArrowCount();
                return;
            }
        }

        addToTracker(livingEntity); //If the entity isn't tracked yet
    }

    protected static void addToTracker(LivingEntity livingEntity) {
        TrackedEntity trackedEntity = new TrackedEntity(livingEntity);

        trackedEntity.incrementArrowCount();
        trackedEntities.add(trackedEntity);
    }

    protected static void removeFromTracker(TrackedEntity trackedEntity) {
        trackedEntities.remove(trackedEntity);
    }

    /**
     * Check for arrow retrieval.
     *
     * @param livingEntity The entity hit by the arrows
     */
    public static void arrowRetrievalCheck(LivingEntity livingEntity) {
        for (Iterator<TrackedEntity> entityIterator = trackedEntities.iterator(); entityIterator.hasNext(); ) {
            TrackedEntity trackedEntity = entityIterator.next();

            if (trackedEntity.getID() == livingEntity.getUniqueId()) {
                Misc.dropItems(livingEntity.getLocation(), new ItemStack(Material.ARROW), trackedEntity.getArrowCount());
                entityIterator.remove();
                return;
            }
        }
    }
}