112 lines
4.0 KiB
Java
112 lines
4.0 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2021 ViaVersion 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 <http://www.gnu.org/licenses/>.
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*/
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package com.viaversion.viaversion.sponge.listeners.protocol1_9to1_8;
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import com.viaversion.viaversion.api.minecraft.item.DataItem;
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import com.viaversion.viaversion.api.minecraft.item.Item;
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import com.viaversion.viaversion.sponge.listeners.protocol1_9to1_8.sponge4.Sponge4ItemGrabber;
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import com.viaversion.viaversion.sponge.listeners.protocol1_9to1_8.sponge5.Sponge5ItemGrabber;
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import org.spongepowered.api.Sponge;
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import org.spongepowered.api.entity.living.player.Player;
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import org.spongepowered.api.item.inventory.ItemStack;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import java.util.UUID;
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import java.util.concurrent.ConcurrentHashMap;
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public class HandItemCache implements Runnable {
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public static boolean CACHE = false;
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private static Map<UUID, Item> handCache = new ConcurrentHashMap<>();
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private static Field GET_DAMAGE;
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private static Method GET_ID;
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private static ItemGrabber grabber;
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static {
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try {
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Class.forName("org.spongepowered.api.event.entity.DisplaceEntityEvent");
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grabber = new Sponge4ItemGrabber();
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} catch (ClassNotFoundException e) {
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grabber = new Sponge5ItemGrabber();
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}
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}
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public static Item getHandItem(UUID player) {
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return handCache.get(player);
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}
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@Override
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public void run() {
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List<UUID> players = new ArrayList<>(handCache.keySet());
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for (Player p : Sponge.getServer().getOnlinePlayers()) {
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handCache.put(p.getUniqueId(), convert(grabber.getItem(p)));
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players.remove(p.getUniqueId());
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}
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// Remove offline players
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for (UUID uuid : players) {
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handCache.remove(uuid);
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}
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}
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public static Item convert(ItemStack itemInHand) {
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if (itemInHand == null) return new DataItem(0, (byte) 0, (short) 0, null);
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if (GET_DAMAGE == null) {
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try {
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GET_DAMAGE = itemInHand.getClass().getDeclaredField("field_77991_e");
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GET_DAMAGE.setAccessible(true);
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} catch (NoSuchFieldException e) {
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e.printStackTrace();
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}
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}
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if (GET_ID == null) {
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try {
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GET_ID = Class.forName("net.minecraft.item.Item").getDeclaredMethod("func_150891_b", Class.forName("net.minecraft.item.Item"));
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} catch (NoSuchMethodException e) {
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e.printStackTrace();
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} catch (ClassNotFoundException e) {
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e.printStackTrace();
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}
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}
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int id = 0;
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if (GET_ID != null) {
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try {
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id = (int) GET_ID.invoke(null, itemInHand.getItem());
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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e.printStackTrace();
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}
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}
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int damage = 0;
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if (GET_DAMAGE != null) {
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try {
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damage = (int) GET_DAMAGE.get(itemInHand);
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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}
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return new DataItem(id, (byte) itemInHand.getQuantity(), (short) damage, null);
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}
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}
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