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Optimize biome translation to take advantage of palettes

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Camotoy 2021-11-19 21:37:38 -05:00
parent 96e60e043a
commit f797f84878
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1 changed files with 61 additions and 21 deletions
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60
connector/src/main/java/org/geysermc/connector/network/translators/world/BiomeTranslator.java
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@ -25,20 +25,25 @@
package org.geysermc.connector.network.translators.world;
import com.github.steveice10.mc.protocol.data.game.chunk.BitStorage;
import com.github.steveice10.mc.protocol.data.game.chunk.DataPalette;
import com.github.steveice10.mc.protocol.data.game.chunk.palette.GlobalPalette;
import com.github.steveice10.mc.protocol.data.game.chunk.palette.Palette;
import com.github.steveice10.mc.protocol.data.game.chunk.palette.SingletonPalette;
import com.github.steveice10.opennbt.tag.builtin.*;
import it.unimi.dsi.fastutil.ints.Int2IntMap;
import it.unimi.dsi.fastutil.ints.IntArrayList;
import it.unimi.dsi.fastutil.ints.IntList;
import it.unimi.dsi.fastutil.ints.IntLists;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.translators.world.chunk.BlockStorage;
import org.geysermc.connector.network.translators.world.chunk.GeyserChunkSection;
import org.geysermc.connector.network.translators.world.chunk.bitarray.BitArray;
import org.geysermc.connector.network.translators.world.chunk.bitarray.BitArrayVersion;
import org.geysermc.connector.network.translators.world.chunk.bitarray.SingletonBitArray;
import org.geysermc.connector.registry.Registries;
import org.geysermc.connector.utils.MathUtils;
// Based off of ProtocolSupport's LegacyBiomeData.java:
// https://github.com/ProtocolSupport/ProtocolSupport/blob/b2cad35977f3fcb65bee57b9e14fc9c975f71d32/src/protocolsupport/protocol/typeremapper/legacy/LegacyBiomeData.java
// Array index formula by https://wiki.vg/Chunk_Format
public class BiomeTranslator {
@ -87,11 +92,41 @@ public class BiomeTranslator {
// As of 1.17.10: the client expects the same format as a chunk but filled with biomes
// As of 1.18 this is the same as Java Edition
if (biomeData.getPalette() instanceof SingletonPalette palette) {
Palette palette = biomeData.getPalette();
if (palette instanceof SingletonPalette) {
int biomeId = biomeTranslations.get(palette.idToState(0));
return new BlockStorage(SingletonBitArray.INSTANCE, IntLists.singleton(biomeId));
} else {
BlockStorage storage = new BlockStorage(0);
BlockStorage storage;
if (!(palette instanceof GlobalPalette)) {
// Prevent resizing by allocating what we can ahead of time
BitStorage bitStorage = biomeData.getStorage();
int size = palette.size();
BitArray bitArray = BitArrayVersion.forBitsCeil(bitStorage.getBitsPerEntry())
.createArray(BlockStorage.SIZE);
IntList bedrockPalette = new IntArrayList(size);
for (int i = 0; i < size; i++) {
int javaId = palette.idToState(i);
bedrockPalette.add(biomeTranslations.get(javaId));
}
// Each section of biome corresponding to a chunk section contains 4 * 4 * 4 entries
for (int i = 0; i < 64; i++) {
int idx = bitStorage.get(i);
int x = i & 3;
int y = (i >> 4) & 3;
int z = (i >> 2) & 3;
// Convert biome coordinates into block coordinates
// Bedrock expects a full 4096 blocks
multiplyIdToStorage(bitArray, idx, x, y, z);
}
storage = new BlockStorage(bitArray, bedrockPalette);
} else {
storage = new BlockStorage(0);
BitArray bitArray = storage.getBitArray();
// Each section of biome corresponding to a chunk section contains 4 * 4 * 4 entries
for (int i = 0; i < 64; i++) {
@ -104,15 +139,20 @@ public class BiomeTranslator {
int idx = storage.idFor(biomeId);
// Convert biome coordinates into block coordinates
// Bedrock expects a full 4096 blocks
for (int blockX = x << 2; blockX < (x << 2) + 4; blockX++) {
for (int blockZ = z << 2; blockZ < (z << 2) + 4; blockZ++) {
for (int blockY = y << 2; blockY < (y << 2) + 4; blockY++) {
storage.getBitArray().set(GeyserChunkSection.blockPosition(blockX, blockY, blockZ), idx);
}
}
multiplyIdToStorage(bitArray, idx, x, y, z);
}
}
return storage;
}
}
private static void multiplyIdToStorage(BitArray bitArray, int idx, int x, int y, int z) {
for (int blockX = x << 2; blockX < (x << 2) + 4; blockX++) {
for (int blockZ = z << 2; blockZ < (z << 2) + 4; blockZ++) {
for (int blockY = y << 2; blockY < (y << 2) + 4; blockY++) {
bitArray.set(GeyserChunkSection.blockPosition(blockX, blockY, blockZ), idx);
}
}
}
}
}