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158 lines
7.7 KiB
Java
158 lines
7.7 KiB
Java
/*
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* Copyright (c) 2019-2021 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.network.translators.world;
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import com.github.steveice10.mc.protocol.data.game.chunk.BitStorage;
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import com.github.steveice10.mc.protocol.data.game.chunk.DataPalette;
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import com.github.steveice10.mc.protocol.data.game.chunk.palette.GlobalPalette;
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import com.github.steveice10.mc.protocol.data.game.chunk.palette.Palette;
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import com.github.steveice10.mc.protocol.data.game.chunk.palette.SingletonPalette;
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import com.github.steveice10.opennbt.tag.builtin.*;
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import it.unimi.dsi.fastutil.ints.Int2IntMap;
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import it.unimi.dsi.fastutil.ints.IntArrayList;
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import it.unimi.dsi.fastutil.ints.IntList;
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import it.unimi.dsi.fastutil.ints.IntLists;
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import org.geysermc.geyser.network.session.GeyserSession;
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import org.geysermc.geyser.network.translators.world.chunk.BlockStorage;
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import org.geysermc.geyser.network.translators.world.chunk.GeyserChunkSection;
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import org.geysermc.geyser.network.translators.world.chunk.bitarray.BitArray;
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import org.geysermc.geyser.network.translators.world.chunk.bitarray.BitArrayVersion;
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import org.geysermc.geyser.network.translators.world.chunk.bitarray.SingletonBitArray;
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import org.geysermc.geyser.registry.Registries;
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import org.geysermc.geyser.utils.MathUtils;
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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 void loadServerBiomes(GeyserSession session, CompoundTag codec) {
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Int2IntMap biomeTranslations = session.getBiomeTranslations();
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biomeTranslations.clear();
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CompoundTag worldGen = codec.get("minecraft:worldgen/biome");
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ListTag serverBiomes = worldGen.get("value");
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session.setBiomeGlobalPalette(MathUtils.getGlobalPaletteForSize(serverBiomes.size()));
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for (Tag tag : serverBiomes) {
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CompoundTag biomeTag = (CompoundTag) tag;
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String javaIdentifier = ((StringTag) biomeTag.get("name")).getValue();
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int bedrockId = Registries.BIOME_IDENTIFIERS.get().getOrDefault(javaIdentifier, -1);
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int javaId = ((IntTag) biomeTag.get("id")).getValue();
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if (bedrockId == -1) {
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// There is no matching Bedrock variation for this biome; let's set the closest match based on biome category
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String category = ((StringTag) ((CompoundTag) biomeTag.get("element")).get("category")).getValue();
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String replacementBiome = switch (category) {
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case "extreme_hills" -> "minecraft:mountains";
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case "icy" -> "minecraft:ice_spikes";
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case "mesa" -> "minecraft:badlands";
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case "mushroom" -> "minecraft:mushroom_fields";
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case "nether" -> "minecraft:nether_wastes";
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default -> "minecraft:ocean"; // Typically ID 0 so a good default
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case "taiga", "jungle", "plains", "savanna", "the_end", "beach", "ocean", "desert", "river", "swamp" -> "minecraft:" + category;
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};
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bedrockId = Registries.BIOME_IDENTIFIERS.get().getInt(replacementBiome);
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}
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// When we see the Java ID, we should instead apply the Bedrock ID
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biomeTranslations.put(javaId, bedrockId);
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if (javaId == 0) {
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// Matches Java behavior when it sees an invalid biome - it just replaces it with ID 0
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biomeTranslations.defaultReturnValue(bedrockId);
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}
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}
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}
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public static BlockStorage toNewBedrockBiome(GeyserSession session, DataPalette biomeData) {
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Int2IntMap biomeTranslations = session.getBiomeTranslations();
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// As of 1.17.10: the client expects the same format as a chunk but filled with biomes
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// As of 1.18 this is the same as Java Edition
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Palette palette = biomeData.getPalette();
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if (palette instanceof SingletonPalette) {
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int biomeId = biomeTranslations.get(palette.idToState(0));
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return new BlockStorage(SingletonBitArray.INSTANCE, IntLists.singleton(biomeId));
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} else {
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BlockStorage storage;
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if (!(palette instanceof GlobalPalette)) {
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// Prevent resizing by allocating what we can ahead of time
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BitStorage bitStorage = biomeData.getStorage();
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int size = palette.size();
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BitArray bitArray = BitArrayVersion.forBitsCeil(bitStorage.getBitsPerEntry())
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.createArray(BlockStorage.SIZE);
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IntList bedrockPalette = new IntArrayList(size);
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for (int i = 0; i < size; i++) {
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int javaId = palette.idToState(i);
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bedrockPalette.add(biomeTranslations.get(javaId));
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}
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// Each section of biome corresponding to a chunk section contains 4 * 4 * 4 entries
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for (int i = 0; i < 64; i++) {
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int idx = bitStorage.get(i);
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int x = i & 3;
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int y = (i >> 4) & 3;
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int z = (i >> 2) & 3;
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// Convert biome coordinates into block coordinates
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// Bedrock expects a full 4096 blocks
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multiplyIdToStorage(bitArray, idx, x, y, z);
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}
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storage = new BlockStorage(bitArray, bedrockPalette);
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} else {
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storage = new BlockStorage(0);
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BitArray bitArray = storage.getBitArray();
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// Each section of biome corresponding to a chunk section contains 4 * 4 * 4 entries
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for (int i = 0; i < 64; i++) {
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int javaId = biomeData.getPalette().idToState(biomeData.getStorage().get(i));
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int x = i & 3;
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int y = (i >> 4) & 3;
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int z = (i >> 2) & 3;
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// Get the Bedrock biome ID override
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int biomeId = biomeTranslations.get(javaId);
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int idx = storage.idFor(biomeId);
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// Convert biome coordinates into block coordinates
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// Bedrock expects a full 4096 blocks
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multiplyIdToStorage(bitArray, idx, x, y, z);
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}
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}
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return storage;
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}
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}
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private static void multiplyIdToStorage(BitArray bitArray, int idx, int x, int y, int z) {
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for (int blockX = x << 2; blockX < (x << 2) + 4; blockX++) {
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for (int blockZ = z << 2; blockZ < (z << 2) + 4; blockZ++) {
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for (int blockY = y << 2; blockY < (y << 2) + 4; blockY++) {
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bitArray.set(GeyserChunkSection.blockPosition(blockX, blockY, blockZ), idx);
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}
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}
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}
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}
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}
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