mirror of https://github.com/GeyserMC/Geyser.git
122 lines
4.4 KiB
Java
122 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 it.unimi.dsi.fastutil.longs.Long2ObjectMap;
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import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
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import org.geysermc.connector.bootstrap.GeyserBootstrap;
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import org.geysermc.connector.network.session.GeyserSession;
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import org.geysermc.connector.network.translators.world.block.BlockTranslator;
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import org.geysermc.connector.utils.MathUtils;
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public class ChunkCache {
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private final boolean cache;
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private final Long2ObjectMap<Column> chunks = new Long2ObjectOpenHashMap<>();
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public ChunkCache(GeyserSession session) {
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if (session.getConnector().getWorldManager().getClass() == GeyserBootstrap.DEFAULT_CHUNK_MANAGER.getClass()) {
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this.cache = session.getConnector().getConfig().isCacheChunks();
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} else {
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this.cache = false; // To prevent Spigot from initializing
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}
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}
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public Column addToCache(Column chunk) {
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if (!cache) {
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return chunk;
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}
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long chunkPosition = MathUtils.chunkPositionToLong(chunk.getX(), chunk.getZ());
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Column existingChunk;
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if (chunk.getBiomeData() == null // Only consider merging columns if the new chunk isn't a full chunk
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&& (existingChunk = chunks.getOrDefault(chunkPosition, null)) != null) { // Column is already present in cache, we can merge with existing
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boolean changed = false;
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for (int i = 0; i < chunk.getChunks().length; i++) { // The chunks member is final, so chunk.getChunks() will probably be inlined and then completely optimized away
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if (chunk.getChunks()[i] != null) {
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existingChunk.getChunks()[i] = chunk.getChunks()[i];
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changed = true;
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}
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}
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return changed ? existingChunk : null;
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} else {
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chunks.put(chunkPosition, chunk);
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return chunk;
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}
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}
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public Column getChunk(int chunkX, int chunkZ) {
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long chunkPosition = MathUtils.chunkPositionToLong(chunkX, chunkZ);
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return chunks.getOrDefault(chunkPosition, null);
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}
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public void updateBlock(int x, int y, int z, int block) {
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if (!cache) {
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return;
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}
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Column column = this.getChunk(x >> 4, z >> 4);
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if (column == null) {
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return;
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}
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Chunk chunk = column.getChunks()[y >> 4];
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if (chunk != null) {
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chunk.set(x & 0xF, y & 0xF, z & 0xF, block);
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}
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}
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public int getBlockAt(int x, int y, int z) {
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if (!cache) {
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return BlockTranslator.AIR;
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}
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Column column = this.getChunk(x >> 4, z >> 4);
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if (column == null) {
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return BlockTranslator.AIR;
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}
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Chunk chunk = column.getChunks()[y >> 4];
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if (chunk != null) {
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return chunk.get(x & 0xF, y & 0xF, z & 0xF);
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}
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return BlockTranslator.AIR;
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}
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public void removeChunk(int chunkX, int chunkZ) {
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if (!cache) {
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return;
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}
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long chunkPosition = MathUtils.chunkPositionToLong(chunkX, chunkZ);
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chunks.remove(chunkPosition);
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}
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}
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