org.diorite.material.data.drops.PossibleDrops.java Source code

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Here is the source code for org.diorite.material.data.drops.PossibleDrops.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2016. Diorite (by Bartomiej Mazur (aka GotoFinal))
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package org.diorite.material.data.drops;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArrayList;

import org.apache.commons.lang3.Validate;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;

import org.diorite.entity.Entity;
import org.diorite.inventory.item.BaseItemStack;
import org.diorite.inventory.item.ItemStack;
import org.diorite.material.Material;
import org.diorite.utils.math.DioriteRandom;
import org.diorite.world.Block;

public class PossibleDrops implements Iterable<PossibleDrop> {
    protected final List<PossibleDrop> possibleDrops = new CopyOnWriteArrayList<>();

    public PossibleDrops(final PossibleDrop basic) {
        Validate.notNull(basic, "Basic drop can't be null.");
        this.possibleDrops.add(basic);
    }

    public static PossibleDrops createEmpty(final Material mat) {
        Validate.notNull(mat, "Material can't be null.");
        return new PossibleDrops(new PossibleFixedDrop(new BaseItemStack(mat, 0), 0));
    }

    /**
     * Returns copy of possible drops as normal ArrayList
     *
     * @return copy of possible drops.
     */
    public List<PossibleDrop> getPossibleDrops() {
        return new ArrayList<>(this.possibleDrops);
    }

    /**
     * Add new drop to possible drops.
     *
     * @param drop drop to add.
     *
     * @return true if drop was added.
     */
    public boolean addDrop(final PossibleDrop drop) {
        return this.possibleDrops.add(drop);
    }

    /**
     * Remove drop from possible drops.
     *
     * @param drop drop to remove.
     *
     * @return true if drop was removed.
     */
    public boolean removeDrop(final PossibleDrop drop) {
        return this.possibleDrops.remove(drop);
    }

    /**
     * Check if possible drops contains this entry.
     *
     * @param drop drop to find/check.
     *
     * @return true if possible drops contains it.
     */
    public boolean containsDrop(final PossibleDrop drop) {
        return this.possibleDrops.contains(drop);
    }

    /**
     * Clear whole drop list.
     */
    public void clear() {
        this.possibleDrops.clear();
    }

    /**
     * Get selected drop by given index.
     *
     * @param i index of element.
     *
     * @return element on this index.
     */
    public PossibleDrop getDrop(final int i) {
        return this.possibleDrops.get(i);
    }

    /**
     * Implementation of this method should simulate real drop from block. <br>
     * Method must handle case when block or usedTool or entity is null.
     *
     * @param entity   may be null! Entity related to drop.
     * @param rand     random instance, should be used if random number is needed.
     * @param usedTool may be null! Used tool.
     * @param block    may be null! Block related to this drop simulation if exist.
     *
     * @return simulated drops for this block.
     */
    public Set<ItemStack> simulateDrop(final Entity entity, final DioriteRandom rand, final ItemStack usedTool,
            final Block block) {
        final Set<ItemStack> drops = new HashSet<>(this.possibleDrops.size() + 3);
        this.possibleDrops.stream().forEach(d -> d.simulateDrop(entity, rand, drops, usedTool, block));
        return drops;
    }

    @Override
    public Iterator<PossibleDrop> iterator() {
        return this.possibleDrops.iterator();
    }

    @Override
    public String toString() {
        return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).appendSuper(super.toString())
                .append("possibleDrops", this.possibleDrops).toString();
    }
}