mirror of https://github.com/GeyserMC/Geyser.git
288 lines
14 KiB
Java
288 lines
14 KiB
Java
/*
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* Copyright (c) 2019-2020 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.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.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.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.NBTOutputStream;
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import com.nukkitx.nbt.NbtMap;
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import com.nukkitx.nbt.NbtUtils;
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import com.nukkitx.protocol.bedrock.packet.*;
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import it.unimi.dsi.fastutil.objects.Object2IntMap;
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import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
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import it.unimi.dsi.fastutil.objects.ObjectArrayList;
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import lombok.Getter;
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import org.geysermc.connector.GeyserConnector;
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import org.geysermc.connector.entity.Entity;
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import org.geysermc.connector.entity.ItemFrameEntity;
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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.*;
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import org.geysermc.connector.network.translators.world.block.BlockTranslator;
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import org.geysermc.connector.network.translators.world.chunk.ChunkPosition;
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import org.geysermc.connector.network.translators.world.chunk.ChunkSection;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import static org.geysermc.connector.network.translators.world.block.BlockTranslator.AIR;
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import static org.geysermc.connector.network.translators.world.block.BlockTranslator.BEDROCK_WATER_ID;
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public class ChunkUtils {
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/**
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* Temporarily stores positions of BlockState values that are needed for certain block entities actively
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*/
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public static final Object2IntMap<Position> CACHED_BLOCK_ENTITIES = new Object2IntOpenHashMap<>();
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private static final NbtMap EMPTY_TAG = NbtMap.builder().build();
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public static final byte[] EMPTY_LEVEL_CHUNK_DATA;
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static {
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try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
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outputStream.write(new byte[258]); // Biomes + Border Size + Extra Data Size
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try (NBTOutputStream stream = NbtUtils.createNetworkWriter(outputStream)) {
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stream.writeTag(EMPTY_TAG);
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}
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EMPTY_LEVEL_CHUNK_DATA = outputStream.toByteArray();
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}catch (IOException e) {
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throw new AssertionError("Unable to generate empty level chunk data");
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}
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}
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public static ChunkData translateToBedrock(GeyserSession session, Column column, boolean isNonFullChunk) {
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ChunkData chunkData = new ChunkData();
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Chunk[] chunks = column.getChunks();
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chunkData.sections = new ChunkSection[chunks.length];
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CompoundTag[] blockEntities = column.getTileEntities();
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// Temporarily stores positions of BlockState values per chunk load
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Object2IntMap<Position> blockEntityPositions = new Object2IntOpenHashMap<>();
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// Temporarily stores compound tags of Bedrock-only block entities
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ObjectArrayList<NbtMap> bedrockOnlyBlockEntities = new ObjectArrayList<>();
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for (int chunkY = 0; chunkY < chunks.length; chunkY++) {
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chunkData.sections[chunkY] = new ChunkSection();
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Chunk chunk = chunks[chunkY];
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// Chunk is null and caching chunks is off or this isn't a non-full chunk
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if (chunk == null && (!session.getConnector().getConfig().isCacheChunks() || !isNonFullChunk))
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continue;
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// If chunk is empty then no need to process
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if (chunk != null && chunk.isEmpty())
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continue;
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ChunkSection section = chunkData.sections[chunkY];
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for (int x = 0; x < 16; x++) {
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for (int y = 0; y < 16; y++) {
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for (int z = 0; z < 16; z++) {
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int blockState;
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// If a non-full chunk, then grab the block that should be here to create a 'full' chunk
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if (chunk == null) {
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Position pos = new ChunkPosition(column.getX(), column.getZ()).getBlock(x, (chunkY << 4) + y, z);
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blockState = session.getConnector().getWorldManager().getBlockAt(session, pos.getX(), pos.getY(), pos.getZ());
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} else {
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blockState = chunk.get(x, y, z);
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}
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int id = BlockTranslator.getBedrockBlockId(blockState);
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// Check to see if the name is in BlockTranslator.getBlockEntityString, and therefore must be handled differently
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if (BlockTranslator.getBlockEntityString(blockState) != null) {
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Position pos = new ChunkPosition(column.getX(), column.getZ()).getBlock(x, (chunkY << 4) + y, z);
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blockEntityPositions.put(pos, blockState);
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}
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section.getBlockStorageArray()[0].setFullBlock(ChunkSection.blockPosition(x, y, z), id);
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// Check if block is piston or flower - only block entities in Bedrock
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if (BlockStateValues.getFlowerPotValues().containsKey(blockState) ||
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BlockStateValues.getPistonValues().containsKey(blockState)) {
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Position pos = new ChunkPosition(column.getX(), column.getZ()).getBlock(x, (chunkY << 4) + y, z);
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bedrockOnlyBlockEntities.add(BedrockOnlyBlockEntity.getTag(Vector3i.from(pos.getX(), pos.getY(), pos.getZ()), blockState));
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}
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if (BlockTranslator.isWaterlogged(blockState)) {
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section.getBlockStorageArray()[1].setFullBlock(ChunkSection.blockPosition(x, y, z), BEDROCK_WATER_ID);
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}
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}
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}
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}
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}
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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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if (tag.contains("id")) {
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tagName = (String) tag.get("id").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) {
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StringTag stringTag = (StringTag) subTag;
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if (stringTag.getValue().equals("")) {
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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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BlockEntityTranslator blockEntityTranslator = BlockEntityUtils.getBlockEntityTranslator(id);
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Position pos = new Position((int) tag.get("x").getValue(), (int) tag.get("y").getValue(), (int) tag.get("z").getValue());
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int blockState = blockEntityPositions.getOrDefault(pos, 0);
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bedrockBlockEntities[i] = blockEntityTranslator.getBlockEntityTag(tagName, tag, blockState);
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i++;
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}
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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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chunkData.blockEntities = bedrockBlockEntities;
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return chunkData;
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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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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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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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if (ItemFrameEntity.positionContainsItemFrame(session, position) && blockState == AIR) {
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((ItemFrameEntity) session.getEntityCache().getEntityByJavaId(ItemFrameEntity.getItemFrameEntityId(session, position))).updateBlock(session);
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return;
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} else if (ItemFrameEntity.positionContainsItemFrame(session, position)) {
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Entity entity = session.getEntityCache().getEntityByJavaId(ItemFrameEntity.getItemFrameEntityId(session, position));
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if (entity != null) {
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session.getEntityCache().removeEntity(entity, false);
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} else {
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ItemFrameEntity.removePosition(session, position);
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}
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}
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int blockId = BlockTranslator.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 (BlockTranslator.isWaterlogged(blockState)) {
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waterPacket.setRuntimeId(BEDROCK_WATER_ID);
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} else {
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waterPacket.setRuntimeId(0);
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}
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session.sendUpstreamPacket(waterPacket);
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// Since Java stores bed colors/skull information as part of the namespaced ID and Bedrock stores it as a tag
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// This is the only place I could find that interacts with the Java block state and block updates
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// Iterates through all block entity translators and determines if the block state needs to be saved
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for (RequiresBlockState requiresBlockState : BlockEntityTranslator.REQUIRES_BLOCK_STATE_LIST) {
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if (requiresBlockState.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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if (requiresBlockState instanceof BedrockOnlyBlockEntity) {
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((BedrockOnlyBlockEntity) requiresBlockState).updateBlock(session, blockState, position);
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break;
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}
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CACHED_BLOCK_ENTITIES.put(new Position(position.getX(), position.getY(), position.getZ()), blockState);
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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(new Position(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_LEVEL_CHUNK_DATA);
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data.setCachingEnabled(false);
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session.sendUpstreamPacket(data);
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if (forceUpdate) {
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Vector3i pos = Vector3i.from(chunkX + x << 4, 80, chunkZ + z << 4);
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UpdateBlockPacket blockPacket = new UpdateBlockPacket();
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blockPacket.setBlockPosition(pos);
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blockPacket.setDataLayer(0);
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blockPacket.setRuntimeId(1);
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session.sendUpstreamPacket(blockPacket);
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}
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}
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}
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}
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public static final class ChunkData {
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public ChunkSection[] sections;
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@Getter
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private NbtMap[] blockEntities = new NbtMap[0];
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}
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}
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