mirror of https://github.com/GeyserMC/Geyser.git
110 lines
4.4 KiB
Java
110 lines
4.4 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.network.session.cache;
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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.mc.protocol.data.game.world.block.BlockState;
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import com.nukkitx.protocol.bedrock.packet.LevelChunkPacket;
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import lombok.Getter;
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import org.geysermc.connector.network.session.GeyserSession;
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import org.geysermc.connector.network.translators.TranslatorsInit;
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import org.geysermc.connector.network.translators.block.BlockEntry;
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import org.geysermc.connector.world.chunk.ChunkPosition;
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import java.util.HashMap;
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import java.util.Map;
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public class ChunkCache {
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private GeyserSession session;
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@Getter
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private Map<ChunkPosition, Column> chunks;
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public ChunkCache(GeyserSession session) {
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this.session = session;
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this.chunks = new HashMap<>();
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}
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public void addToCache(Column chunk) {
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ChunkPosition position = new ChunkPosition(chunk.getX(), chunk.getZ());
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chunks.put(position, chunk);
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}
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public void updateBlock(Position position, BlockState block) {
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ChunkPosition chunkPosition = new ChunkPosition(position.getX() >> 4, position.getZ() >> 4);
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if (!chunks.containsKey(chunkPosition))
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return;
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Column column = chunks.get(chunkPosition);
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Chunk chunk = column.getChunks()[position.getY() >> 4];
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Position blockPosition = chunkPosition.getChunkBlock(position.getX(), position.getY(), position.getZ());
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if (chunk != null) {
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chunk.set(blockPosition.getX(), blockPosition.getY(), blockPosition.getZ(), block);
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}
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}
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public BlockEntry getBlockAt(Position position) {
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ChunkPosition chunkPosition = new ChunkPosition(position.getX() >> 4, position.getZ() >> 4);
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if (!chunks.containsKey(chunkPosition))
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return BlockEntry.AIR;
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Column column = chunks.get(chunkPosition);
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Chunk chunk = column.getChunks()[position.getY() >> 4];
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Position blockPosition = chunkPosition.getChunkBlock(position.getX(), position.getY(), position.getZ());
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if (chunk != null) {
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BlockState blockState = chunk.get(blockPosition.getX(), blockPosition.getY(), blockPosition.getZ());
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return TranslatorsInit.getBlockTranslator().getBlockEntry(blockState);
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}
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return BlockEntry.AIR;
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}
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public void removeChunk(ChunkPosition position) {
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chunks.remove(position);
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sendEmptyChunk(position, true);
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}
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public void sendEmptyChunk(ChunkPosition position) {
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sendEmptyChunk(position, false);
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}
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public void sendEmptyChunk(ChunkPosition position, boolean force) {
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if (!force && chunks.containsKey(position))
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return;
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LevelChunkPacket levelChunkPacket = new LevelChunkPacket();
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levelChunkPacket.setChunkX(position.getX());
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levelChunkPacket.setChunkZ(position.getZ());
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levelChunkPacket.setCachingEnabled(false);
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levelChunkPacket.setSubChunksLength(0);
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levelChunkPacket.setData(TranslatorsInit.EMPTY_LEVEL_CHUNK_DATA);
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session.getUpstream().sendPacket(levelChunkPacket);
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}
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}
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