mirror of https://github.com/GeyserMC/Geyser.git
74 lines
3.5 KiB
Java
74 lines
3.5 KiB
Java
/*
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* Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.connector.utils.collections;
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import com.nukkitx.math.vector.Vector3i;
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import com.nukkitx.nbt.NbtMap;
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import org.geysermc.connector.network.session.GeyserSession;
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import org.geysermc.connector.network.translators.inventory.translators.LecternInventoryTranslator;
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import org.geysermc.connector.network.translators.world.WorldManager;
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import org.geysermc.connector.utils.BlockEntityUtils;
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/**
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* Map that takes advantage of its internals for fast operations on block states to determine if they are lecterns.
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*/
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public class LecternHasBookMap extends FixedInt2BooleanMap {
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/**
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* Update a potential lectern within the world. This is a map method so it can use the internal fields to
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* optimize lectern determining.
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*/
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public void handleBlockChange(GeyserSession session, int blockState, Vector3i position) {
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WorldManager worldManager = session.getConnector().getWorldManager();
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int offset = blockState - this.start;
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if (offset < 0 || offset > this.value.length) {
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// Block state is out of bounds of this map - lectern has been destroyed, if it existed
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if (!worldManager.shouldExpectLecternHandled()) {
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session.getLecternCache().remove(position);
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}
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return;
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}
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boolean newLecternHasBook;
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if (worldManager.shouldExpectLecternHandled()) {
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// As of right now, no tag can be added asynchronously
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worldManager.getLecternDataAt(session, position.getX(), position.getY(), position.getZ(), false);
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} else if ((newLecternHasBook = this.value[offset]) != this.get(worldManager.getBlockAt(session, position))) {
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// If the lectern block was updated, or it previously had a book
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NbtMap newLecternTag;
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// newLecternHasBook = the new lectern block state's "has book" toggle.
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if (newLecternHasBook) {
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newLecternTag = worldManager.getLecternDataAt(session, position.getX(), position.getY(), position.getZ(), false);
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} else {
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session.getLecternCache().remove(position);
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newLecternTag = LecternInventoryTranslator.getBaseLecternTag(position.getX(), position.getY(), position.getZ(), 0).build();
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}
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BlockEntityUtils.updateBlockEntity(session, newLecternTag, position);
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}
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}
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}
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