forked from GeyserMC/Geyser
97 lines
3.7 KiB
Java
97 lines
3.7 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.translators;
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import com.nukkitx.nbt.NBTInputStream;
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import com.nukkitx.nbt.NbtMap;
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import com.nukkitx.nbt.NbtUtils;
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import org.geysermc.connector.GeyserConnector;
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import org.geysermc.connector.utils.FileUtils;
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import org.geysermc.connector.utils.LanguageUtils;
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import java.io.InputStream;
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import java.util.Arrays;
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// Based off of ProtocolSupport's LegacyBiomeData.java:
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// https://github.com/ProtocolSupport/ProtocolSupport/blob/b2cad35977f3fcb65bee57b9e14fc9c975f71d32/src/protocolsupport/protocol/typeremapper/legacy/LegacyBiomeData.java
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// Array index formula by https://wiki.vg/Chunk_Format
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public class BiomeTranslator {
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public static final NbtMap BIOMES;
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private BiomeTranslator() {
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}
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public static void init() {
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// no-op
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}
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static {
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/* Load biomes */
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InputStream stream = FileUtils.getResource("bedrock/biome_definitions.dat");
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NbtMap biomesTag;
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try (NBTInputStream biomenbtInputStream = NbtUtils.createNetworkReader(stream)) {
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biomesTag = (NbtMap) biomenbtInputStream.readTag();
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BIOMES = biomesTag;
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} catch (Exception ex) {
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GeyserConnector.getInstance().getLogger().warning(LanguageUtils.getLocaleStringLog("geyser.toolbox.fail.biome_read"));
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throw new AssertionError(ex);
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}
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}
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public static byte[] toBedrockBiome(int[] biomeData) {
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byte[] bedrockData = new byte[256];
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if (biomeData == null) {
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return bedrockData;
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}
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for (int y = 0; y < 16; y += 4) {
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for (int z = 0; z < 16; z += 4) {
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for (int x = 0; x < 16; x += 4) {
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byte biomeId = biomeID(biomeData, x, y, z);
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int offset = ((z + (y / 4)) << 4) | x;
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Arrays.fill(bedrockData, offset, offset + 4, biomeId);
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}
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}
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}
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return bedrockData;
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}
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private static byte biomeID(int[] biomeData, int x, int y, int z) {
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int biomeId = biomeData[((y >> 2) & 63) << 4 | ((z >> 2) & 3) << 2 | ((x >> 2) & 3)];
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if (biomeId == 0) {
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biomeId = 42; // Ocean
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} else if (biomeId >= 40 && biomeId <= 43) { // Java has multiple End dimensions that Bedrock doesn't recognize
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biomeId = 9;
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} else if (biomeId >= 170) { // Nether biomes. Dunno why it's like this :microjang:
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biomeId += 8;
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}
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return (byte) biomeId;
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}
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}
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