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256 lines
11 KiB
Java
256 lines
11 KiB
Java
/*
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* Copyright (c) 2019-2022 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.geyser.util;
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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.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.IntLists;
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import lombok.experimental.UtilityClass;
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import org.geysermc.geyser.entity.type.ItemFrameEntity;
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import org.geysermc.geyser.level.BedrockDimension;
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import org.geysermc.geyser.level.JavaDimension;
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import org.geysermc.geyser.level.block.BlockStateValues;
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import org.geysermc.geyser.level.chunk.BlockStorage;
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import org.geysermc.geyser.level.chunk.GeyserChunkSection;
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import org.geysermc.geyser.level.chunk.bitarray.SingletonBitArray;
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import org.geysermc.geyser.registry.BlockRegistries;
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import org.geysermc.geyser.session.GeyserSession;
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import org.geysermc.geyser.text.GeyserLocale;
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import org.geysermc.geyser.translator.level.block.entity.BedrockOnlyBlockEntity;
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import static org.geysermc.geyser.level.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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* An empty subchunk.
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*/
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public static final byte[] SERIALIZED_CHUNK_DATA;
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/**
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* An empty chunk that can be safely passed on to a LevelChunkPacket with subcounts set to 0.
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*/
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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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ByteBuf byteBuf = Unpooled.buffer();
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try {
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new GeyserChunkSection(new BlockStorage[0])
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.writeToNetwork(byteBuf);
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SERIALIZED_CHUNK_DATA = new byte[byteBuf.readableBytes()];
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byteBuf.readBytes(SERIALIZED_CHUNK_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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BlockStorage blockStorage = new BlockStorage(SingletonBitArray.INSTANCE, IntLists.singleton(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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}
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public 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 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.getServerRenderDistance() << 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 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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updateBlockClientSide(session, blockState, position);
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session.getChunkCache().updateBlock(position.getX(), position.getY(), position.getZ(), blockState);
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session.getWorldCache().updateServerCorrectBlockState(position);
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}
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/**
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* Updates a block, but client-side only.
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*/
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public static void updateBlockClientSide(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(true);
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// Still update the chunk cache with the new block if updateBlock is called
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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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if (BlockStateValues.getSkullVariant(blockState) == -1) {
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// Skull is gone
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session.getSkullCache().removeSkull(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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}
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public static void sendEmptyChunk(GeyserSession session, int chunkX, int chunkZ, boolean forceUpdate) {
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LevelChunkPacket data = new LevelChunkPacket();
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data.setChunkX(chunkX);
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data.setChunkZ(chunkZ);
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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);
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if (forceUpdate) {
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Vector3i pos = Vector3i.from(chunkX << 4, 80, chunkZ << 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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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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sendEmptyChunk(session, chunkX + x, chunkZ + z, forceUpdate);
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}
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}
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}
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/**
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* Process the minimum and maximum heights for this dimension, and processes the world coordinate scale.
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* This must be done after the player has switched dimensions so we know what their dimension is
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*/
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public static void loadDimension(GeyserSession session) {
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JavaDimension dimension = session.getDimensionType();
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int minY = dimension.minY();
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int maxY = dimension.maxY();
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if (minY % 16 != 0) {
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throw new RuntimeException("Minimum Y must be a multiple of 16!");
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}
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if (maxY % 16 != 0) {
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throw new RuntimeException("Maximum Y must be a multiple of 16!");
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}
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BedrockDimension bedrockDimension = switch (session.getDimension()) {
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case DimensionUtils.THE_END -> BedrockDimension.THE_END;
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case DimensionUtils.NETHER -> DimensionUtils.isCustomBedrockNetherId() ? BedrockDimension.THE_END : BedrockDimension.THE_NETHER;
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default -> BedrockDimension.OVERWORLD;
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};
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session.getChunkCache().setBedrockDimension(bedrockDimension);
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// Yell in the console if the world height is too height in the current scenario
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// The constraints change depending on if the player is in the overworld or not, and if experimental height is enabled
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// (Ignore this for the Nether. We can't change that at the moment without the workaround. :/ )
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if (minY < bedrockDimension.minY() || (bedrockDimension.doUpperHeightWarn() && maxY > bedrockDimension.height())) {
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session.getGeyser().getLogger().warning(GeyserLocale.getLocaleStringLog("geyser.network.translator.chunk.out_of_bounds",
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String.valueOf(bedrockDimension.minY()),
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String.valueOf(bedrockDimension.height()),
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session.getDimension()));
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}
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session.getChunkCache().setMinY(minY);
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session.getChunkCache().setHeightY(maxY);
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session.getWorldBorder().setWorldCoordinateScale(dimension.worldCoordinateScale());
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}
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}
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