mirror of https://github.com/GeyserMC/Geyser.git
478 lines
24 KiB
Java
478 lines
24 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;
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import com.github.steveice10.mc.protocol.data.game.chunk.BitStorage;
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import com.github.steveice10.mc.protocol.data.game.chunk.Chunk;
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import com.github.steveice10.mc.protocol.data.game.chunk.Column;
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import com.github.steveice10.mc.protocol.data.game.chunk.palette.GlobalPalette;
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import com.github.steveice10.mc.protocol.data.game.chunk.palette.Palette;
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import com.github.steveice10.mc.protocol.data.game.entity.metadata.Position;
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import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
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import com.github.steveice10.opennbt.tag.builtin.IntTag;
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import com.github.steveice10.opennbt.tag.builtin.StringTag;
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import com.github.steveice10.opennbt.tag.builtin.Tag;
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import com.nukkitx.math.vector.Vector2i;
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import com.nukkitx.math.vector.Vector3i;
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import com.nukkitx.nbt.NbtMap;
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import com.nukkitx.protocol.bedrock.packet.LevelChunkPacket;
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import com.nukkitx.protocol.bedrock.packet.NetworkChunkPublisherUpdatePacket;
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import com.nukkitx.protocol.bedrock.packet.UpdateBlockPacket;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import it.unimi.dsi.fastutil.ints.IntArrayList;
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import it.unimi.dsi.fastutil.ints.IntList;
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import lombok.Data;
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import lombok.experimental.UtilityClass;
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import org.geysermc.connector.GeyserConnector;
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import org.geysermc.connector.entity.ItemFrameEntity;
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import org.geysermc.connector.entity.player.SkullPlayerEntity;
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import org.geysermc.connector.network.session.GeyserSession;
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import org.geysermc.connector.network.translators.world.block.BlockStateValues;
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import org.geysermc.connector.network.translators.world.block.entity.BedrockOnlyBlockEntity;
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import org.geysermc.connector.network.translators.world.block.entity.BlockEntityTranslator;
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import org.geysermc.connector.network.translators.world.block.entity.SkullBlockEntityTranslator;
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import org.geysermc.connector.network.translators.world.chunk.BlockStorage;
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import org.geysermc.connector.network.translators.world.chunk.ChunkSection;
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import org.geysermc.connector.network.translators.world.chunk.bitarray.BitArray;
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import org.geysermc.connector.network.translators.world.chunk.bitarray.BitArrayVersion;
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import org.geysermc.connector.registry.BlockRegistries;
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import java.util.ArrayList;
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import java.util.BitSet;
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import java.util.List;
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import static org.geysermc.connector.network.translators.world.block.BlockStateValues.JAVA_AIR_ID;
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@UtilityClass
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public class ChunkUtils {
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/**
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* The minimum height Bedrock Edition will accept.
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*/
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public static final int MINIMUM_ACCEPTED_HEIGHT = 0;
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private static final int CAVES_AND_CLIFFS_MINIMUM_HEIGHT = -64;
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public static final int MINIMUM_ACCEPTED_HEIGHT_OVERWORLD = GeyserConnector.getInstance().getConfig().isExtendedWorldHeight() ?
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CAVES_AND_CLIFFS_MINIMUM_HEIGHT : MINIMUM_ACCEPTED_HEIGHT;
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/**
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* The maximum chunk height Bedrock Edition will accept, from the lowest point to the highest.
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*/
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private static final int MAXIMUM_ACCEPTED_HEIGHT = 256;
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private static final int CAVES_AND_CLIFFS_MAXIMUM_HEIGHT = 384;
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private static final int MAXIMUM_ACCEPTED_HEIGHT_OVERWORLD = GeyserConnector.getInstance().getConfig().isExtendedWorldHeight() ?
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CAVES_AND_CLIFFS_MAXIMUM_HEIGHT : MAXIMUM_ACCEPTED_HEIGHT;
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public static final byte[] EMPTY_CHUNK_DATA;
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public static final byte[] EMPTY_BIOME_DATA;
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static {
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if (GeyserConnector.getInstance().getConfig().isExtendedWorldHeight()) {
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ByteBuf byteBuf = Unpooled.buffer();
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try {
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BlockStorage blockStorage = new BlockStorage(0);
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blockStorage.writeToNetwork(byteBuf);
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EMPTY_BIOME_DATA = new byte[byteBuf.readableBytes()];
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byteBuf.readBytes(EMPTY_BIOME_DATA);
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} finally {
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byteBuf.release();
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}
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byteBuf = Unpooled.buffer();
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try {
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for (int i = 0; i < 32; i++) {
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byteBuf.writeBytes(EMPTY_BIOME_DATA);
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}
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byteBuf.writeByte(0); // Border
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EMPTY_CHUNK_DATA = new byte[byteBuf.readableBytes()];
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byteBuf.readBytes(EMPTY_CHUNK_DATA);
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} finally {
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byteBuf.release();
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}
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} else {
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EMPTY_BIOME_DATA = null; // Unused
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EMPTY_CHUNK_DATA = new byte[257]; // 256 bytes for biomes, one for borders
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}
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}
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private static int indexYZXtoXZY(int yzx) {
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return (yzx >> 8) | (yzx & 0x0F0) | ((yzx & 0x00F) << 8);
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}
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public static ChunkData translateToBedrock(GeyserSession session, Column column, int yOffset) {
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Chunk[] javaSections = column.getChunks();
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ChunkSection[] sections = new ChunkSection[javaSections.length - yOffset];
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// Temporarily stores compound tags of Bedrock-only block entities
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List<NbtMap> bedrockOnlyBlockEntities = new ArrayList<>();
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BitSet waterloggedPaletteIds = new BitSet();
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BitSet pistonOrFlowerPaletteIds = new BitSet();
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boolean overworld = session.getChunkCache().isExtendedHeight();
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int maxBedrockSectionY = ((overworld ? MAXIMUM_ACCEPTED_HEIGHT_OVERWORLD : MAXIMUM_ACCEPTED_HEIGHT) >> 4) - 1;
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for (int sectionY = 0; sectionY < javaSections.length; sectionY++) {
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int bedrockSectionY = sectionY + (yOffset - ((overworld ? MINIMUM_ACCEPTED_HEIGHT_OVERWORLD : MINIMUM_ACCEPTED_HEIGHT) >> 4));
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if (bedrockSectionY < 0 || maxBedrockSectionY < bedrockSectionY) {
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// Ignore this chunk section since it goes outside the bounds accepted by the Bedrock client
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continue;
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}
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Chunk javaSection = javaSections[sectionY];
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// No need to encode an empty section...
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if (javaSection == null || javaSection.isEmpty()) {
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continue;
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}
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Palette javaPalette = javaSection.getPalette();
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BitStorage javaData = javaSection.getStorage();
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if (javaPalette instanceof GlobalPalette) {
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// As this is the global palette, simply iterate through the whole chunk section once
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ChunkSection section = new ChunkSection(session.getBlockMappings().getBedrockAirId());
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for (int yzx = 0; yzx < BlockStorage.SIZE; yzx++) {
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int javaId = javaData.get(yzx);
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int bedrockId = session.getBlockMappings().getBedrockBlockId(javaId);
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int xzy = indexYZXtoXZY(yzx);
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section.getBlockStorageArray()[0].setFullBlock(xzy, bedrockId);
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if (BlockRegistries.WATERLOGGED.get().contains(javaId)) {
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section.getBlockStorageArray()[1].setFullBlock(xzy, session.getBlockMappings().getBedrockWaterId());
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}
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// Check if block is piston or flower to see if we'll need to create additional block entities, as they're only block entities in Bedrock
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if (BlockStateValues.getFlowerPotValues().containsKey(javaId) || BlockStateValues.getPistonValues().containsKey(javaId)) {
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bedrockOnlyBlockEntities.add(BedrockOnlyBlockEntity.getTag(session,
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Vector3i.from((column.getX() << 4) + (yzx & 0xF), ((sectionY + yOffset) << 4) + ((yzx >> 8) & 0xF), (column.getZ() << 4) + ((yzx >> 4) & 0xF)),
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javaId
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));
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}
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}
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sections[bedrockSectionY] = section;
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continue;
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}
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IntList bedrockPalette = new IntArrayList(javaPalette.size());
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waterloggedPaletteIds.clear();
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pistonOrFlowerPaletteIds.clear();
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// Iterate through palette and convert state IDs to Bedrock, doing some additional checks as we go
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for (int i = 0; i < javaPalette.size(); i++) {
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int javaId = javaPalette.idToState(i);
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bedrockPalette.add(session.getBlockMappings().getBedrockBlockId(javaId));
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if (BlockRegistries.WATERLOGGED.get().contains(javaId)) {
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waterloggedPaletteIds.set(i);
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}
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// Check if block is piston or flower to see if we'll need to create additional block entities, as they're only block entities in Bedrock
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if (BlockStateValues.getFlowerPotValues().containsKey(javaId) || BlockStateValues.getPistonValues().containsKey(javaId)) {
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pistonOrFlowerPaletteIds.set(i);
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}
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}
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// Add Bedrock-exclusive block entities
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// We only if the palette contained any blocks that are Bedrock-exclusive block entities to avoid iterating through the whole block data
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// for no reason, as most sections will not contain any pistons or flower pots
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if (!pistonOrFlowerPaletteIds.isEmpty()) {
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for (int yzx = 0; yzx < BlockStorage.SIZE; yzx++) {
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int paletteId = javaData.get(yzx);
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if (pistonOrFlowerPaletteIds.get(paletteId)) {
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bedrockOnlyBlockEntities.add(BedrockOnlyBlockEntity.getTag(session,
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Vector3i.from((column.getX() << 4) + (yzx & 0xF), ((sectionY + yOffset) << 4) + ((yzx >> 8) & 0xF), (column.getZ() << 4) + ((yzx >> 4) & 0xF)),
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javaPalette.idToState(paletteId)
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));
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}
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}
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}
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BitArray bedrockData = BitArrayVersion.forBitsCeil(javaData.getBitsPerEntry()).createArray(BlockStorage.SIZE);
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BlockStorage layer0 = new BlockStorage(bedrockData, bedrockPalette);
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BlockStorage[] layers;
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// Convert data array from YZX to XZY coordinate order
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if (waterloggedPaletteIds.isEmpty()) {
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// No blocks are waterlogged, simply convert coordinate order
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// This could probably be optimized further...
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for (int yzx = 0; yzx < BlockStorage.SIZE; yzx++) {
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bedrockData.set(indexYZXtoXZY(yzx), javaData.get(yzx));
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}
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layers = new BlockStorage[]{ layer0 };
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} else {
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// The section contains waterlogged blocks, we need to convert coordinate order AND generate a V1 block storage for
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// layer 1 with palette ID 1 indicating water
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int[] layer1Data = new int[BlockStorage.SIZE >> 5];
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for (int yzx = 0; yzx < BlockStorage.SIZE; yzx++) {
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int paletteId = javaData.get(yzx);
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int xzy = indexYZXtoXZY(yzx);
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bedrockData.set(xzy, paletteId);
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if (waterloggedPaletteIds.get(paletteId)) {
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layer1Data[xzy >> 5] |= 1 << (xzy & 0x1F);
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}
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}
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// V1 palette
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IntList layer1Palette = new IntArrayList(2);
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layer1Palette.add(session.getBlockMappings().getBedrockAirId()); // Air - see BlockStorage's constructor for more information
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layer1Palette.add(session.getBlockMappings().getBedrockWaterId());
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layers = new BlockStorage[]{ layer0, new BlockStorage(BitArrayVersion.V1.createArray(BlockStorage.SIZE, layer1Data), layer1Palette) };
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}
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sections[bedrockSectionY] = new ChunkSection(layers);
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}
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CompoundTag[] blockEntities = column.getTileEntities();
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NbtMap[] bedrockBlockEntities = new NbtMap[blockEntities.length + bedrockOnlyBlockEntities.size()];
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int i = 0;
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while (i < blockEntities.length) {
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CompoundTag tag = blockEntities[i];
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String tagName;
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Tag idTag = tag.get("id");
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if (idTag != null) {
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tagName = (String) idTag.getValue();
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} else {
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tagName = "Empty";
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// Sometimes legacy tags have their ID be a StringTag with empty value
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for (Tag subTag : tag) {
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if (subTag instanceof StringTag stringTag) {
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if (stringTag.getValue().isEmpty()) {
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tagName = stringTag.getName();
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break;
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}
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}
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}
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if (tagName.equals("Empty")) {
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GeyserConnector.getInstance().getLogger().debug("Got tag with no id: " + tag.getValue());
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}
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}
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String id = BlockEntityUtils.getBedrockBlockEntityId(tagName);
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int x = (int) tag.get("x").getValue();
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int y = (int) tag.get("y").getValue();
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int z = (int) tag.get("z").getValue();
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// Get Java blockstate ID from block entity position
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int blockState = 0;
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Chunk section = column.getChunks()[(y >> 4) - yOffset];
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if (section != null) {
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blockState = section.get(x & 0xF, y & 0xF, z & 0xF);
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}
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if (tagName.equals("minecraft:lectern") && BlockStateValues.getLecternBookStates().get(blockState)) {
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// If getLecternBookStates is false, let's just treat it like a normal block entity
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bedrockBlockEntities[i] = session.getConnector().getWorldManager().getLecternDataAt(session, x, y, z, true);
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i++;
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continue;
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}
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BlockEntityTranslator blockEntityTranslator = BlockEntityUtils.getBlockEntityTranslator(id);
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bedrockBlockEntities[i] = blockEntityTranslator.getBlockEntityTag(tagName, tag, blockState);
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// Check for custom skulls
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if (SkullBlockEntityTranslator.ALLOW_CUSTOM_SKULLS && tag.contains("SkullOwner")) {
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SkullBlockEntityTranslator.spawnPlayer(session, tag, blockState);
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}
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i++;
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}
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// Append Bedrock-exclusive block entities to output array
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for (NbtMap tag : bedrockOnlyBlockEntities) {
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bedrockBlockEntities[i] = tag;
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i++;
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}
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return new ChunkData(sections, bedrockBlockEntities);
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}
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public static void updateChunkPosition(GeyserSession session, Vector3i position) {
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Vector2i chunkPos = session.getLastChunkPosition();
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Vector2i newChunkPos = Vector2i.from(position.getX() >> 4, position.getZ() >> 4);
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if (chunkPos == null || !chunkPos.equals(newChunkPos)) {
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NetworkChunkPublisherUpdatePacket chunkPublisherUpdatePacket = new NetworkChunkPublisherUpdatePacket();
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chunkPublisherUpdatePacket.setPosition(position);
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chunkPublisherUpdatePacket.setRadius(session.getRenderDistance() << 4);
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session.sendUpstreamPacket(chunkPublisherUpdatePacket);
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session.setLastChunkPosition(newChunkPos);
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}
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}
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/**
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* Sends a block update to the Bedrock client. If chunk caching is enabled and the platform is not Spigot, this also
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* adds that block to the cache.
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* @param session the Bedrock session to send/register the block to
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* @param blockState the Java block state of the block
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* @param position the position of the block
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*/
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public static void updateBlock(GeyserSession session, int blockState, Position position) {
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Vector3i pos = Vector3i.from(position.getX(), position.getY(), position.getZ());
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updateBlock(session, blockState, pos);
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}
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/**
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* Sends a block update to the Bedrock client. If chunk caching is enabled and the platform is not Spigot, this also
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* adds that block to the cache.
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* @param session the Bedrock session to send/register the block to
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* @param blockState the Java block state of the block
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* @param position the position of the block
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*/
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public static void updateBlock(GeyserSession session, int blockState, Vector3i position) {
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// Checks for item frames so they aren't tripped up and removed
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ItemFrameEntity itemFrameEntity = ItemFrameEntity.getItemFrameEntity(session, position);
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if (itemFrameEntity != null) {
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if (blockState == JAVA_AIR_ID) { // Item frame is still present and no block overrides that; refresh it
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itemFrameEntity.updateBlock(session);
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// Still update the chunk cache with the new block
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session.getChunkCache().updateBlock(position.getX(), position.getY(), position.getZ(), blockState);
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return;
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}
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// Otherwise, let's still store our reference to the item frame, but let the new block take precedence for now
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}
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SkullPlayerEntity skull = session.getSkullCache().get(position);
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if (skull != null && blockState != skull.getBlockState()) {
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// Skull is gone
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skull.despawnEntity(session, position);
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}
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// Prevent moving_piston from being placed
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// It's used for extending piston heads, but it isn't needed on Bedrock and causes pistons to flicker
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if (!BlockStateValues.isMovingPiston(blockState)) {
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int blockId = session.getBlockMappings().getBedrockBlockId(blockState);
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UpdateBlockPacket updateBlockPacket = new UpdateBlockPacket();
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updateBlockPacket.setDataLayer(0);
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updateBlockPacket.setBlockPosition(position);
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updateBlockPacket.setRuntimeId(blockId);
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updateBlockPacket.getFlags().add(UpdateBlockPacket.Flag.NEIGHBORS);
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updateBlockPacket.getFlags().add(UpdateBlockPacket.Flag.NETWORK);
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session.sendUpstreamPacket(updateBlockPacket);
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UpdateBlockPacket waterPacket = new UpdateBlockPacket();
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waterPacket.setDataLayer(1);
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waterPacket.setBlockPosition(position);
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if (BlockRegistries.WATERLOGGED.get().contains(blockState)) {
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waterPacket.setRuntimeId(session.getBlockMappings().getBedrockWaterId());
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} else {
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waterPacket.setRuntimeId(session.getBlockMappings().getBedrockAirId());
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}
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session.sendUpstreamPacket(waterPacket);
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}
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BlockStateValues.getLecternBookStates().handleBlockChange(session, blockState, position);
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// Iterates through all Bedrock-only block entity translators and determines if a manual block entity packet
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// needs to be sent
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for (BedrockOnlyBlockEntity bedrockOnlyBlockEntity : BlockEntityUtils.BEDROCK_ONLY_BLOCK_ENTITIES) {
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if (bedrockOnlyBlockEntity.isBlock(blockState)) {
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// Flower pots are block entities only in Bedrock and are not updated anywhere else like note blocks
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bedrockOnlyBlockEntity.updateBlock(session, blockState, position);
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break; //No block will be a part of two classes
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}
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}
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session.getChunkCache().updateBlock(position.getX(), position.getY(), position.getZ(), blockState);
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}
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public static void sendEmptyChunks(GeyserSession session, Vector3i position, int radius, boolean forceUpdate) {
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int chunkX = position.getX() >> 4;
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int chunkZ = position.getZ() >> 4;
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for (int x = -radius; x <= radius; x++) {
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for (int z = -radius; z <= radius; z++) {
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LevelChunkPacket data = new LevelChunkPacket();
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data.setChunkX(chunkX + x);
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data.setChunkZ(chunkZ + z);
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data.setSubChunksLength(0);
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data.setData(EMPTY_CHUNK_DATA);
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data.setCachingEnabled(false);
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session.sendUpstreamPacket(data);
|
|
|
|
if (forceUpdate) {
|
|
Vector3i pos = Vector3i.from(chunkX + x << 4, 80, chunkZ + z << 4);
|
|
UpdateBlockPacket blockPacket = new UpdateBlockPacket();
|
|
blockPacket.setBlockPosition(pos);
|
|
blockPacket.setDataLayer(0);
|
|
blockPacket.setRuntimeId(1);
|
|
session.sendUpstreamPacket(blockPacket);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Process the minimum and maximum heights for this dimension.
|
|
* This must be done after the player has switched dimensions so we know what their dimension is
|
|
*/
|
|
public static void applyDimensionHeight(GeyserSession session, CompoundTag dimensionTag) {
|
|
int minY = ((IntTag) dimensionTag.get("min_y")).getValue();
|
|
int maxY = ((IntTag) dimensionTag.get("height")).getValue();
|
|
// Logical height can be ignored probably - seems to be for artificial limits like the Nether.
|
|
|
|
if (minY % 16 != 0) {
|
|
throw new RuntimeException("Minimum Y must be a multiple of 16!");
|
|
}
|
|
if (maxY % 16 != 0) {
|
|
throw new RuntimeException("Maximum Y must be a multiple of 16!");
|
|
}
|
|
|
|
int dimension = DimensionUtils.javaToBedrock(session.getDimension());
|
|
boolean extendedHeight = dimension == 0 && session.getConnector().getConfig().isExtendedWorldHeight();
|
|
session.getChunkCache().setExtendedHeight(extendedHeight);
|
|
|
|
// Yell in the console if the world height is too height in the current scenario
|
|
// The constraints change depending on if the player is in the overworld or not, and if experimental height is enabled
|
|
if (minY < (extendedHeight ? MINIMUM_ACCEPTED_HEIGHT_OVERWORLD : MINIMUM_ACCEPTED_HEIGHT)
|
|
|| maxY > (extendedHeight ? MAXIMUM_ACCEPTED_HEIGHT_OVERWORLD : MAXIMUM_ACCEPTED_HEIGHT)) {
|
|
if (minY >= CAVES_AND_CLIFFS_MINIMUM_HEIGHT && maxY <= CAVES_AND_CLIFFS_MAXIMUM_HEIGHT && dimension == 0 && !session.getConnector().getConfig().isExtendedWorldHeight()) {
|
|
// This dimension uses heights that would be fixed by enabling the experimental toggle
|
|
session.getConnector().getLogger().warning(
|
|
LanguageUtils.getLocaleStringLog("geyser.network.translator.chunk.out_of_bounds.caves_and_cliffs",
|
|
"extended-world-height"));
|
|
} else {
|
|
session.getConnector().getLogger().warning(LanguageUtils.getLocaleStringLog("geyser.network.translator.chunk.out_of_bounds",
|
|
extendedHeight ? MINIMUM_ACCEPTED_HEIGHT_OVERWORLD : MINIMUM_ACCEPTED_HEIGHT,
|
|
extendedHeight ? MAXIMUM_ACCEPTED_HEIGHT_OVERWORLD : MAXIMUM_ACCEPTED_HEIGHT,
|
|
session.getDimension()));
|
|
}
|
|
}
|
|
|
|
session.getChunkCache().setMinY(minY);
|
|
session.getChunkCache().setHeightY(maxY);
|
|
}
|
|
|
|
@Data
|
|
public static final class ChunkData {
|
|
private final ChunkSection[] sections;
|
|
private final NbtMap[] blockEntities;
|
|
}
|
|
}
|