161 lines
5.4 KiB
Java
161 lines
5.4 KiB
Java
/*
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* WorldEdit, a Minecraft world manipulation toolkit
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* Copyright (C) sk89q <http://www.sk89q.com>
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* Copyright (C) WorldEdit team and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package com.sk89q.worldedit.world.registry;
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import com.google.common.io.Resources;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.google.gson.reflect.TypeToken;
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import com.sk89q.worldedit.WorldEdit;
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import com.sk89q.worldedit.extension.platform.Capability;
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import com.sk89q.worldedit.internal.Constants;
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import com.sk89q.worldedit.math.Vector3;
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import com.sk89q.worldedit.util.gson.VectorAdapter;
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import com.sk89q.worldedit.util.io.ResourceLoader;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.IOException;
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import java.net.URL;
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import java.nio.charset.Charset;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import javax.annotation.Nullable;
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/**
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* Provides item data based on the built-in item database that is bundled
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* with WorldEdit.
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*
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* <p>A new instance cannot be created. Use {@link #getInstance()} to get
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* an instance.</p>
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*
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* <p>The data is read from a JSON file that is bundled with WorldEdit. If
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* reading fails (which occurs when this class is first instantiated), then
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* the methods will return {@code null}s for all items.</p>
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*/
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public final class BundledItemData {
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private static final Logger log = LoggerFactory.getLogger(BundledItemData.class);
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private static BundledItemData INSTANCE;
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private final ResourceLoader resourceLoader;
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private final Map<String, ItemEntry> idMap = new HashMap<>();
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/**
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* Create a new instance.
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*/
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private BundledItemData() {
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this.resourceLoader = WorldEdit.getInstance().getPlatformManager().queryCapability(Capability.CONFIGURATION).getResourceLoader();
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try {
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loadFromResource();
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} catch (Throwable e) {
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log.warn("Failed to load the built-in item registry", e);
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}
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}
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/**
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* Attempt to load the data from file.
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*
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* @throws IOException thrown on I/O error
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*/
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private void loadFromResource() throws IOException {
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GsonBuilder gsonBuilder = new GsonBuilder();
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gsonBuilder.registerTypeAdapter(Vector3.class, new VectorAdapter());
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Gson gson = gsonBuilder.create();
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URL url = null;
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final int dataVersion = WorldEdit.getInstance().getPlatformManager().queryCapability(Capability.WORLD_EDITING).getDataVersion();
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if (dataVersion >= Constants.DATA_VERSION_MC_1_16) {
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url = resourceLoader.getResource(BundledBlockData.class, "items.116.json");
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} else if (dataVersion >= Constants.DATA_VERSION_MC_1_15) {
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url = resourceLoader.getResource(BundledBlockData.class, "items.115.json");
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} else if (dataVersion >= Constants.DATA_VERSION_MC_1_14) {
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url = resourceLoader.getResource(BundledBlockData.class, "items.114.json");
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}
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if (url == null) {
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url = resourceLoader.getResource(BundledBlockData.class, "items.json");
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}
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if (url == null) {
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throw new IOException("Could not find items.json");
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}
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log.debug("Using {} for bundled item data.", url);
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String data = Resources.toString(url, Charset.defaultCharset());
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List<ItemEntry> entries = gson.fromJson(data, new TypeToken<List<ItemEntry>>() {}.getType());
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for (ItemEntry entry : entries) {
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idMap.put(entry.id, entry);
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}
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}
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/**
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* Return the entry for the given item ID.
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*
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* @param id the ID
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* @return the entry, or null
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*/
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@Nullable
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public ItemEntry findById(String id) {
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// If it has no namespace, assume minecraft.
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if (!id.contains(":")) {
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id = "minecraft:" + id;
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}
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return idMap.get(id);
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}
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/**
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* Get the material properties for the given item.
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*
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* @param id the string ID
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* @return the material's properties, or null
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*/
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@Nullable
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public ItemMaterial getMaterialById(String id) {
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ItemEntry entry = findById(id);
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if (entry != null) {
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// FIXME: This should probably just be part of the JSON itself
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return new SimpleItemMaterial(entry.maxStackSize, entry.maxDamage);
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} else {
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return null;
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}
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}
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/**
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* Get a singleton instance of this object.
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*
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* @return the instance
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*/
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public static BundledItemData getInstance() {
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if (INSTANCE == null) {
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INSTANCE = new BundledItemData();
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}
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return INSTANCE;
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}
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public static class ItemEntry {
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private String id;
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private String unlocalizedName;
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public String localizedName;
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private int maxDamage;
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private int maxStackSize;
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}
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}
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