forked from GeyserMC/Geyser
Start work on chunks
- There are probably many errors and issues with this code (some dumb ones probably). As of right now it crashes the client.
This commit is contained in:
RednedEpic
parent
bf8da2a3ad
commit
1c1785ac51
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@ -72,15 +72,9 @@
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>com.nukkitx.protocol</groupId>
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<artifactId>bedrock-v354</artifactId>
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<version>2.1.2</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>com.nukkitx.protocol</groupId>
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<artifactId>bedrock-v340</artifactId>
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<version>2.1.2</version>
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<groupId>com.nukkitx</groupId>
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<artifactId>fastutil-lite</artifactId>
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<version>8.1.1</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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@ -43,7 +43,6 @@ import org.geysermc.connector.console.GeyserLogger;
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import org.geysermc.connector.metrics.Metrics;
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import org.geysermc.connector.network.ConnectorServerEventHandler;
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import org.geysermc.connector.network.remote.RemoteJavaServer;
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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.plugin.GeyserPluginLoader;
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import org.geysermc.connector.plugin.GeyserPluginManager;
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@ -27,8 +27,10 @@ package org.geysermc.connector.entity.attribute;
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import lombok.AllArgsConstructor;
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import lombok.Getter;
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import lombok.Setter;
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@Getter
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@Setter
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@AllArgsConstructor
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public class Attribute {
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@ -98,6 +98,9 @@ public class ItemTranslator {
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public static BedrockItem getBedrockBlock(BlockState stack) {
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Map<String, Object> m = Remapper.JAVA_TO_BEDROCK_BLOCKS.get(stack.getId());
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if (m == null)
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return BedrockItem.AIR;
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return new BedrockItem((String) m.get("name"), (Integer) m.get("id"), (Integer) m.get("data"));
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}
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@ -1,25 +1,55 @@
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package org.geysermc.connector.network.translators.java.world;
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import com.github.steveice10.mc.protocol.packet.ingame.server.world.ServerChunkDataPacket;
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import com.github.steveice10.packetlib.packet.Packet;
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import com.nukkitx.protocol.bedrock.packet.LevelChunkPacket;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import org.geysermc.connector.console.GeyserLogger;
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import org.geysermc.connector.network.session.GeyserSession;
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import org.geysermc.connector.network.translators.PacketTranslator;
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import org.geysermc.connector.utils.Chunks;
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import org.geysermc.connector.utils.ChunkUtils;
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import org.geysermc.connector.world.chunk.ChunkSection;
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public class JavaChunkDataPacket extends PacketTranslator<ServerChunkDataPacket> {
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@Override
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public void translate(ServerChunkDataPacket packet, GeyserSession session) {
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LevelChunkPacket levelChunkPacket = new LevelChunkPacket();
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Chunks.ChunkData data = Chunks.getData(packet.getColumn());
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levelChunkPacket.setSubChunksLength(data.count);
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levelChunkPacket.setData(data.bytes);
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levelChunkPacket.setChunkX(packet.getColumn().getX());
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levelChunkPacket.setChunkZ(packet.getColumn().getZ());
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try {
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byte[] buffer = new byte[32];
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ChunkUtils.ChunkData chunkData = ChunkUtils.translateToBedrock(packet.getColumn());
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int count = 0;
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ChunkSection[] sections = chunkData.sections;
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for (int i = sections.length - 1; i >= 0; i--) {
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if (sections[i].isEmpty())
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continue;
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count = i + 1;
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break;
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}
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for (int i = 0; i < count; i++) {
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ChunkUtils.putBytes(count, buffer, new byte[]{(byte) 0});
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ChunkSection section = chunkData.sections[i];
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ByteBuf byteBuf = Unpooled.buffer();
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section.writeToNetwork(byteBuf);
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byte[] byteData = byteBuf.array();
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ChunkUtils.putBytes(count, buffer, byteData);
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}
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LevelChunkPacket levelChunkPacket = new LevelChunkPacket();
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levelChunkPacket.setSubChunksLength(16);
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levelChunkPacket.setCachingEnabled(true);
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levelChunkPacket.setChunkX(packet.getColumn().getX());
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levelChunkPacket.setChunkZ(packet.getColumn().getZ());
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levelChunkPacket.setData(buffer);
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session.getUpstream().sendPacket(levelChunkPacket);
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} catch (Exception ex) {
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ex.printStackTrace();
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}
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GeyserLogger.DEFAULT.info("Sent chunk packet!");
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session.getUpstream().sendPacket(levelChunkPacket);
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}
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}
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@ -0,0 +1,91 @@
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package org.geysermc.connector.utils;
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import com.github.steveice10.mc.protocol.data.game.chunk.BlockStorage;
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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.world.block.BlockState;
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import org.geysermc.connector.network.translators.TranslatorsInit;
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import org.geysermc.connector.network.translators.item.BedrockItem;
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import org.geysermc.connector.world.chunk.ChunkSection;
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import java.util.Arrays;
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public class ChunkUtils {
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private static final int MAX_ARRAY_SIZE = Integer.MAX_VALUE - 8;
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public static ChunkData translateToBedrock(Column column) {
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ChunkData chunkData = new ChunkData();
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chunkData.sections = new ChunkSection[16];
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for (int i = 0; i < 16; i++) {
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chunkData.sections[i] = new ChunkSection();
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}
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for (int y = 0; y < 256; y++) {
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int chunkY = y >> 4;
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Chunk chunk = null;
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try {
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chunk = column.getChunks()[chunkY];
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} catch (Exception ex) {
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ex.printStackTrace();
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}
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if (chunk == null || chunk.isEmpty())
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continue;
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BlockStorage storage = chunk.getBlocks();
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for (int x = 0; x < 16; x++) {
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for (int z = 0; z < 16; z++) {
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BlockState block = storage.get(x, y & 0xF, z);
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BedrockItem bedrockBlock = TranslatorsInit.getItemTranslator().getBedrockBlock(block);
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ChunkSection section = chunkData.sections[chunkY];
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org.geysermc.connector.world.chunk.BlockStorage blockStorage = new org.geysermc.connector.world.chunk.BlockStorage();
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blockStorage.setFullBlock(ChunkSection.blockPosition(x, y, z), bedrockBlock.getId());
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section.getBlockStorageArray()[0] = blockStorage;
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section.getBlockStorageArray()[1] = blockStorage;
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}
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}
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}
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return chunkData;
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}
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public static final class ChunkData {
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public ChunkSection[] sections;
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}
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public static void putBytes(int count, byte[] buffer, byte[] bytes) {
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if (bytes == null) {
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return;
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}
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int minCapacity = count + bytes.length;
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if ((minCapacity) - buffer.length > 0) {
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int oldCapacity = buffer.length;
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int newCapacity = oldCapacity << 1;
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if (newCapacity - minCapacity < 0) {
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newCapacity = minCapacity;
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}
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if (newCapacity - MAX_ARRAY_SIZE > 0) {
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newCapacity = hugeCapacity(minCapacity);
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}
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buffer = Arrays.copyOf(buffer, newCapacity);
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}
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System.arraycopy(bytes, 0, buffer, count, bytes.length);
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}
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private static int hugeCapacity(int minCapacity) {
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if (minCapacity < 0) { // overflow
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throw new OutOfMemoryError();
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}
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return (minCapacity > MAX_ARRAY_SIZE) ? Integer.MAX_VALUE : MAX_ARRAY_SIZE;
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}
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}
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@ -1,81 +0,0 @@
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package org.geysermc.connector.utils;
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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 gnu.trove.list.TByteList;
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import gnu.trove.list.array.TByteArrayList;
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import lombok.AccessLevel;
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import lombok.AllArgsConstructor;
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import org.geysermc.connector.network.translators.item.ItemTranslator;
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import java.util.List;
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import java.util.Objects;
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public class Chunks {
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public static ChunkData getData(Column c) {
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Objects.requireNonNull(c);
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int count = 0;
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for(Chunk chunk : c.getChunks()) {
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if(chunk != null) {
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count++;
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}
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}
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int block = 0;
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TByteList list = new TByteArrayList(4096 * 4);
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for(int i = 0; i < 256; i++) {
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list.add((byte) 0);
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}
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for(Chunk chunk : c.getChunks()) {
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if (chunk != null) {
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list.add((byte) 0);
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for (int x = 0; x < 16; x++) {
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for (int y = 0; x < 16; x++) {
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for (int z = 0; x < 16; x++) {
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try {
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list.add((byte) ItemTranslator.getBedrockBlock(chunk.getBlocks().get(x, y, z)).getId());
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} catch (NullPointerException e) {
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list.add((byte) 0);
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}
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block++;
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}
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}
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}
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for (int x = 0; x < 16; x++) {
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for (int y = 0; x < 16; x++) {
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for (int z = 0; x < 16; x++) {
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try {
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list.add((byte) ItemTranslator.getBedrockBlock(chunk.getBlocks().get(x, y, z)).getData());
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} catch (NullPointerException e) {
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list.add((byte) 0);
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}
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block++;
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}
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}
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}
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}
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}
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list.add((byte) 0);
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list.add((byte) 0);
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return new ChunkData(count, list.toArray());
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}
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@AllArgsConstructor(access = AccessLevel.PACKAGE)
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public static final class ChunkData {
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public final int count;
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public final byte[] bytes;
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}
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}
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@ -0,0 +1,9 @@
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package org.geysermc.connector.utils;
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public class MathUtils {
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public static int ceil(float floatNumber) {
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int truncated = (int) floatNumber;
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return floatNumber > truncated ? truncated + 1 : truncated;
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}
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}
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@ -9,6 +9,7 @@ import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import org.geysermc.connector.network.translators.item.BedrockItem;
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import org.geysermc.connector.network.translators.item.JavaItem;
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import org.geysermc.connector.world.GlobalBlockPalette;
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import java.io.InputStream;
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import java.util.*;
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@ -38,6 +39,7 @@ public class Toolbox {
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ByteBuf b = Unpooled.buffer();
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VarInts.writeUnsignedInt(b, entries.size());
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for (Map<String, Object> e : entries) {
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GlobalBlockPalette.registerMapping((int) e.get("id"));
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BedrockUtils.writeString(b, (String) e.get("name"));
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b.writeShortLE((int) e.get("data"));
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b.writeShortLE((int) e.get("id"));
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@ -0,0 +1,42 @@
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package org.geysermc.connector.world;
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import it.unimi.dsi.fastutil.ints.Int2IntArrayMap;
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import java.util.NoSuchElementException;
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import java.util.concurrent.atomic.AtomicInteger;
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/**
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* Adapted from NukkitX: https://github.com/NukkitX/Nukkit
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*/
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public class GlobalBlockPalette {
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private static final Int2IntArrayMap legacyToRuntimeId = new Int2IntArrayMap();
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private static final Int2IntArrayMap runtimeIdToLegacy = new Int2IntArrayMap();
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private static final AtomicInteger runtimeIdAllocator = new AtomicInteger(0);
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static {
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legacyToRuntimeId.defaultReturnValue(-1);
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runtimeIdToLegacy.defaultReturnValue(-1);
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}
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public static int getOrCreateRuntimeId(int id, int meta) {
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return getOrCreateRuntimeId((id << 4) | meta);
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}
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public static int getOrCreateRuntimeId(int legacyId) throws NoSuchElementException {
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int runtimeId = legacyToRuntimeId.get(legacyId);
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if (!legacyToRuntimeId.containsKey(legacyId) || runtimeId == -1) {
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//runtimeId = registerMapping(runtimeIdAllocator.incrementAndGet(), legacyId);
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// throw new NoSuchElementException("Unmapped block registered id:" + (legacyId >>> 4) + " meta:" + (legacyId & 0xf));
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return 0;
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}
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return runtimeId;
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}
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public static int registerMapping(int legacyId) {
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int runtimeId = runtimeIdAllocator.getAndIncrement();
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runtimeIdToLegacy.put(runtimeId, legacyId);
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legacyToRuntimeId.put(legacyId, runtimeId);
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return runtimeId;
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}
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}
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@ -0,0 +1,110 @@
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package org.geysermc.connector.world.chunk;
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import com.nukkitx.network.VarInts;
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import gnu.trove.list.array.TIntArrayList;
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import io.netty.buffer.ByteBuf;
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import org.geysermc.connector.world.GlobalBlockPalette;
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import org.geysermc.connector.world.chunk.palette.Palette;
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import org.geysermc.connector.world.chunk.palette.PaletteVersion;
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/**
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* Adapted from NukkitX: https://github.com/NukkitX/Nukkit
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*/
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public class BlockStorage {
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private static final int SIZE = 4096;
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private final TIntArrayList ids;
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private Palette palette;
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public BlockStorage() {
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this(PaletteVersion.V2);
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}
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public BlockStorage(PaletteVersion version) {
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this.palette = version.createPalette(SIZE);
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this.ids = new TIntArrayList(16, -1);
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this.ids.add(0); // Air is at the start of every palette.
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}
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private BlockStorage(Palette palette, TIntArrayList ids) {
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this.ids = ids;
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this.palette = palette;
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}
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public synchronized int getFullBlock(int xzy) {
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return this.palette.get(xzy);
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}
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public synchronized void setFullBlock(int index, int legacyId) {
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this.palette.set(index, this.idFor(legacyId));
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}
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public synchronized void writeToNetwork(ByteBuf buffer) {
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buffer.writeByte(getPaletteHeader(palette.getVersion(), true));
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for (int word : palette.getWords()) {
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buffer.writeIntLE(word);
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}
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VarInts.writeUnsignedInt(buffer, ids.size());
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ids.forEach(id -> {
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VarInts.writeUnsignedInt(buffer, id);
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return true;
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});
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}
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public synchronized void writeToStorage(ByteBuf buffer) {
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buffer.writeByte(getPaletteHeader(palette.getVersion(), false));
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for (int word : palette.getWords()) {
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buffer.writeIntLE(word);
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}
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//TODO: Write persistent NBT tags
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}
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private synchronized void onResize(PaletteVersion version) {
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Palette oldPalette = this.palette;
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this.palette = version.createPalette(SIZE);
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for (int i = 0; i < SIZE; i++) {
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this.palette.set(i, oldPalette.get(i));
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}
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}
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private int idFor(int legacyId) {
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int runtimeId = GlobalBlockPalette.getOrCreateRuntimeId(legacyId);
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int index = this.ids.indexOf(runtimeId);
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if (index != -1) {
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return index;
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}
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index = this.ids.size();
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this.ids.add(runtimeId);
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PaletteVersion version = this.palette.getVersion();
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if (index > version.getMaxEntryValue()) {
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PaletteVersion next = version.next();
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if (next != null) {
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this.onResize(next);
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}
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}
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return index;
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}
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private static int getPaletteHeader(PaletteVersion version, boolean runtime) {
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return (version.getVersion() << 1) | (runtime ? 1 : 0);
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}
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public boolean isEmpty() {
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for (int word : this.palette.getWords()) {
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if (word != 0) {
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return false;
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}
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}
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return true;
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}
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public BlockStorage copy() {
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return new BlockStorage(this.palette.copy(), new TIntArrayList(this.ids));
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}
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}
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@ -0,0 +1,128 @@
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package org.geysermc.connector.world.chunk;
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import com.nukkitx.network.util.Preconditions;
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||||
import io.netty.buffer.ByteBuf;
|
||||
import lombok.Synchronized;
|
||||
|
||||
/**
|
||||
* Adapted from NukkitX: https://github.com/NukkitX/Nukkit
|
||||
*/
|
||||
public class ChunkSection {
|
||||
|
||||
private static final int CHUNK_SECTION_VERSION = 8;
|
||||
public static final int SIZE = 4096;
|
||||
|
||||
private final BlockStorage[] storage;
|
||||
private final NibbleArray blockLight;
|
||||
private final NibbleArray skyLight;
|
||||
|
||||
public ChunkSection() {
|
||||
this(new BlockStorage[]{new BlockStorage(), new BlockStorage()}, new NibbleArray(SIZE),
|
||||
new NibbleArray(SIZE));
|
||||
}
|
||||
|
||||
public ChunkSection(BlockStorage[] blockStorage) {
|
||||
this(blockStorage, new NibbleArray(SIZE), new NibbleArray(SIZE));
|
||||
}
|
||||
|
||||
public ChunkSection(BlockStorage[] storage, byte[] blockLight, byte[] skyLight) {
|
||||
Preconditions.checkNotNull(storage, "storage");
|
||||
Preconditions.checkArgument(storage.length > 1, "Block storage length must be at least 2");
|
||||
for (BlockStorage blockStorage : storage) {
|
||||
Preconditions.checkNotNull(blockStorage, "storage");
|
||||
}
|
||||
|
||||
this.storage = storage;
|
||||
this.blockLight = new NibbleArray(blockLight);
|
||||
this.skyLight = new NibbleArray(skyLight);
|
||||
}
|
||||
|
||||
private ChunkSection(BlockStorage[] storage, NibbleArray blockLight, NibbleArray skyLight) {
|
||||
this.storage = storage;
|
||||
this.blockLight = blockLight;
|
||||
this.skyLight = skyLight;
|
||||
}
|
||||
|
||||
public int getFullBlock(int x, int y, int z, int layer) {
|
||||
checkBounds(x, y, z);
|
||||
Preconditions.checkElementIndex(layer, this.storage.length);
|
||||
return this.storage[layer].getFullBlock(blockPosition(x, y, z));
|
||||
}
|
||||
|
||||
public void setFullBlock(int x, int y, int z, int layer, int fullBlock) {
|
||||
checkBounds(x, y, z);
|
||||
Preconditions.checkElementIndex(layer, this.storage.length);
|
||||
this.storage[layer].setFullBlock(blockPosition(x, y, z), fullBlock);
|
||||
}
|
||||
|
||||
@Synchronized("skyLight")
|
||||
public byte getSkyLight(int x, int y, int z) {
|
||||
checkBounds(x, y, z);
|
||||
return this.skyLight.get(blockPosition(x, y, z));
|
||||
}
|
||||
|
||||
@Synchronized("skyLight")
|
||||
public void setSkyLight(int x, int y, int z, byte val) {
|
||||
checkBounds(x, y, z);
|
||||
this.skyLight.set(blockPosition(x, y, z), val);
|
||||
}
|
||||
|
||||
@Synchronized("blockLight")
|
||||
public byte getBlockLight(int x, int y, int z) {
|
||||
checkBounds(x, y, z);
|
||||
return this.blockLight.get(blockPosition(x, y, z));
|
||||
}
|
||||
|
||||
@Synchronized("blockLight")
|
||||
public void setBlockLight(int x, int y, int z, byte val) {
|
||||
checkBounds(x, y, z);
|
||||
this.blockLight.set(blockPosition(x, y, z), val);
|
||||
}
|
||||
|
||||
public void writeToNetwork(ByteBuf buffer) {
|
||||
buffer.writeByte(CHUNK_SECTION_VERSION);
|
||||
buffer.writeByte(this.storage.length);
|
||||
for (BlockStorage blockStorage : this.storage) {
|
||||
blockStorage.writeToNetwork(buffer);
|
||||
}
|
||||
}
|
||||
|
||||
public NibbleArray getSkyLightArray() {
|
||||
return skyLight;
|
||||
}
|
||||
|
||||
public NibbleArray getBlockLightArray() {
|
||||
return blockLight;
|
||||
}
|
||||
|
||||
public BlockStorage[] getBlockStorageArray() {
|
||||
return storage;
|
||||
}
|
||||
|
||||
public boolean isEmpty() {
|
||||
for (BlockStorage blockStorage : this.storage) {
|
||||
if (!blockStorage.isEmpty()) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
public ChunkSection copy() {
|
||||
BlockStorage[] storage = new BlockStorage[this.storage.length];
|
||||
for (int i = 0; i < storage.length; i++) {
|
||||
storage[i] = this.storage[i].copy();
|
||||
}
|
||||
return new ChunkSection(storage, skyLight.copy(), blockLight.copy());
|
||||
}
|
||||
|
||||
public static int blockPosition(int x, int y, int z) {
|
||||
return (x << 8) | (z << 4) | y;
|
||||
}
|
||||
|
||||
private static void checkBounds(int x, int y, int z) {
|
||||
Preconditions.checkArgument(x >= 0 && x < 16, "x (%s) is not between 0 and 15", x);
|
||||
Preconditions.checkArgument(y >= 0 && y < 16, "y (%s) is not between 0 and 15", y);
|
||||
Preconditions.checkArgument(z >= 0 && z < 16, "z (%s) is not between 0 and 15", z);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
package org.geysermc.connector.world.chunk;
|
||||
|
||||
import com.nukkitx.network.util.Preconditions;
|
||||
|
||||
/**
|
||||
* Adapted from NukkitX: https://github.com/NukkitX/Nukkit
|
||||
*/
|
||||
public class NibbleArray implements Cloneable {
|
||||
|
||||
private final byte[] data;
|
||||
|
||||
public NibbleArray(int length) {
|
||||
data = new byte[length / 2];
|
||||
}
|
||||
|
||||
public NibbleArray(byte[] array) {
|
||||
data = array;
|
||||
}
|
||||
|
||||
public byte get(int index) {
|
||||
Preconditions.checkElementIndex(index, data.length * 2);
|
||||
byte val = data[index / 2];
|
||||
if ((index & 1) == 0) {
|
||||
return (byte) (val & 0x0f);
|
||||
} else {
|
||||
return (byte) ((val & 0xf0) >>> 4);
|
||||
}
|
||||
}
|
||||
|
||||
public void set(int index, byte value) {
|
||||
Preconditions.checkArgument(value >= 0 && value < 16, "Nibbles must have a value between 0 and 15.");
|
||||
Preconditions.checkElementIndex(index, data.length * 2);
|
||||
value &= 0xf;
|
||||
int half = index / 2;
|
||||
byte previous = data[half];
|
||||
if ((index & 1) == 0) {
|
||||
data[half] = (byte) (previous & 0xf0 | value);
|
||||
} else {
|
||||
data[half] = (byte) (previous & 0x0f | value << 4);
|
||||
}
|
||||
}
|
||||
|
||||
public void fill(byte value) {
|
||||
Preconditions.checkArgument(value >= 0 && value < 16, "Nibbles must have a value between 0 and 15.");
|
||||
value &= 0xf;
|
||||
for (int i = 0; i < data.length; i++) {
|
||||
data[i] = (byte) ((value << 4) | value);
|
||||
}
|
||||
}
|
||||
|
||||
public void copyFrom(byte[] bytes) {
|
||||
Preconditions.checkNotNull(bytes, "bytes");
|
||||
Preconditions.checkArgument(bytes.length == data.length, "length of provided byte array is %s but expected %s", bytes.length,
|
||||
data.length);
|
||||
System.arraycopy(bytes, 0, data, 0, data.length);
|
||||
}
|
||||
|
||||
public void copyFrom(NibbleArray array) {
|
||||
Preconditions.checkNotNull(array, "array");
|
||||
copyFrom(array.data);
|
||||
}
|
||||
|
||||
public byte[] getData() {
|
||||
return data;
|
||||
}
|
||||
|
||||
public NibbleArray copy() {
|
||||
return new NibbleArray(getData().clone());
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,77 @@
|
|||
package org.geysermc.connector.world.chunk.palette;
|
||||
|
||||
import com.nukkitx.network.util.Preconditions;
|
||||
import org.geysermc.connector.utils.MathUtils;
|
||||
|
||||
import java.util.Arrays;
|
||||
|
||||
/**
|
||||
* Adapted from NukkitX: https://github.com/NukkitX/Nukkit
|
||||
*/
|
||||
public class PaddedPalette implements Palette {
|
||||
|
||||
/**
|
||||
* Array used to store data
|
||||
*/
|
||||
private final int[] words;
|
||||
|
||||
/**
|
||||
* Palette version information
|
||||
*/
|
||||
private final PaletteVersion version;
|
||||
|
||||
/**
|
||||
* Number of entries in this palette (<b>not</b> the length of the words array that internally backs this palette)
|
||||
*/
|
||||
private final int size;
|
||||
|
||||
PaddedPalette(PaletteVersion version, int size, int[] words) {
|
||||
this.size = size;
|
||||
this.version = version;
|
||||
this.words = words;
|
||||
int expectedWordsLength = MathUtils.ceil((float) size / version.entriesPerWord);
|
||||
if (words.length != expectedWordsLength) {
|
||||
throw new IllegalArgumentException("Invalid length given for storage, got: " + words.length +
|
||||
" but expected: " + expectedWordsLength);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public void set(int index, int value) {
|
||||
Preconditions.checkElementIndex(index, this.size);
|
||||
Preconditions.checkArgument(value >= 0 && value <= this.version.maxEntryValue, "Invalid value");
|
||||
int arrayIndex = index / this.version.entriesPerWord;
|
||||
int offset = (index % this.version.entriesPerWord) * this.version.bits;
|
||||
|
||||
this.words[arrayIndex] = this.words[arrayIndex] & ~(this.version.maxEntryValue << offset) | (value & this.version.maxEntryValue) << offset;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int get(int index) {
|
||||
Preconditions.checkElementIndex(index, this.size);
|
||||
int arrayIndex = index / this.version.entriesPerWord;
|
||||
int offset = (index % this.version.entriesPerWord) * this.version.bits;
|
||||
|
||||
return (this.words[arrayIndex] >>> offset) & this.version.maxEntryValue;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int size() {
|
||||
return this.size;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int[] getWords() {
|
||||
return this.words;
|
||||
}
|
||||
|
||||
@Override
|
||||
public PaletteVersion getVersion() {
|
||||
return this.version;
|
||||
}
|
||||
|
||||
@Override
|
||||
public Palette copy() {
|
||||
return new PaddedPalette(this.version, this.size, Arrays.copyOf(this.words, this.words.length));
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
package org.geysermc.connector.world.chunk.palette;
|
||||
|
||||
/**
|
||||
* Adapted from NukkitX: https://github.com/NukkitX/Nukkit
|
||||
*/
|
||||
public interface Palette {
|
||||
|
||||
void set(int index, int value);
|
||||
|
||||
int get(int index);
|
||||
|
||||
int size();
|
||||
|
||||
int[] getWords();
|
||||
|
||||
PaletteVersion getVersion();
|
||||
|
||||
Palette copy();
|
||||
}
|
||||
|
|
@ -0,0 +1,64 @@
|
|||
package org.geysermc.connector.world.chunk.palette;
|
||||
|
||||
import org.geysermc.connector.utils.MathUtils;
|
||||
|
||||
/**
|
||||
* Adapted from NukkitX: https://github.com/NukkitX/Nukkit
|
||||
*/
|
||||
public enum PaletteVersion {
|
||||
|
||||
V16(16, 2, null),
|
||||
V8(8, 4, V16),
|
||||
V6(6, 5, V8), // 2 bit padding
|
||||
V5(5, 6, V6), // 2 bit padding
|
||||
V4(4, 8, V5),
|
||||
V3(3, 10, V4), // 2 bit padding
|
||||
V2(2, 16, V3),
|
||||
V1(1, 32, V2);
|
||||
|
||||
final byte bits;
|
||||
final byte entriesPerWord;
|
||||
final int maxEntryValue;
|
||||
final PaletteVersion next;
|
||||
|
||||
PaletteVersion(int bits, int entriesPerWord, PaletteVersion next) {
|
||||
this.bits = (byte) bits;
|
||||
this.entriesPerWord = (byte) entriesPerWord;
|
||||
this.maxEntryValue = (1 << this.bits) - 1;
|
||||
this.next = next;
|
||||
}
|
||||
|
||||
public Palette createPalette(int size) {
|
||||
return this.createPalette(size, new int[MathUtils.ceil((float) size / entriesPerWord)]);
|
||||
}
|
||||
|
||||
public byte getVersion() {
|
||||
return bits;
|
||||
}
|
||||
|
||||
public int getMaxEntryValue() {
|
||||
return maxEntryValue;
|
||||
}
|
||||
|
||||
public PaletteVersion next() {
|
||||
return next;
|
||||
}
|
||||
|
||||
public Palette createPalette(int size, int[] words) {
|
||||
if (this == V3 || this == V5 || this == V6) {
|
||||
// Padded palettes aren't able to use bitwise operations due to their padding.
|
||||
return new PaddedPalette(this, size, words);
|
||||
} else {
|
||||
return new Pow2Palette(this, size, words);
|
||||
}
|
||||
}
|
||||
|
||||
private static PaletteVersion getVersion(int version, boolean read) {
|
||||
for (PaletteVersion ver : values()) {
|
||||
if ( ( !read && ver.entriesPerWord <= version ) || ( read && ver.bits == version ) ) {
|
||||
return ver;
|
||||
}
|
||||
}
|
||||
throw new IllegalArgumentException("Invalid palette version: " + version);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,86 @@
|
|||
package org.geysermc.connector.world.chunk.palette;
|
||||
|
||||
import com.nukkitx.network.util.Preconditions;
|
||||
import org.geysermc.connector.utils.MathUtils;
|
||||
|
||||
import java.util.Arrays;
|
||||
|
||||
/**
|
||||
* Adapted from NukkitX: https://github.com/NukkitX/Nukkit
|
||||
*/
|
||||
public class Pow2Palette implements Palette {
|
||||
|
||||
/**
|
||||
* Array used to store data
|
||||
*/
|
||||
private final int[] words;
|
||||
|
||||
/**
|
||||
* Palette version information
|
||||
*/
|
||||
private final PaletteVersion version;
|
||||
|
||||
/**
|
||||
* Number of entries in this palette (<b>not</b> the length of the words array that internally backs this palette)
|
||||
*/
|
||||
private final int size;
|
||||
|
||||
Pow2Palette(PaletteVersion version, int size, int[] words) {
|
||||
this.size = size;
|
||||
this.version = version;
|
||||
this.words = words;
|
||||
int expectedWordsLength = MathUtils.ceil((float) size / version.entriesPerWord);
|
||||
if (words.length != expectedWordsLength) {
|
||||
throw new IllegalArgumentException("Invalid length given for storage, got: " + words.length +
|
||||
" but expected: " + expectedWordsLength);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the entry at the given location to the given value
|
||||
*/
|
||||
public void set(int index, int value) {
|
||||
Preconditions.checkElementIndex(index, this.size);
|
||||
Preconditions.checkArgument(value >= 0 && value <= this.version.maxEntryValue, "Invalid value");
|
||||
int bitIndex = index * this.version.bits;
|
||||
int arrayIndex = bitIndex >> 5;
|
||||
int offset = bitIndex & 31;
|
||||
this.words[arrayIndex] = this.words[arrayIndex] & ~(this.version.maxEntryValue << offset) | (value & this.version.maxEntryValue) << offset;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets the entry at the given index
|
||||
*/
|
||||
public int get(int index) {
|
||||
Preconditions.checkElementIndex(index, this.size);
|
||||
int bitIndex = index * this.version.bits;
|
||||
int arrayIndex = bitIndex >> 5;
|
||||
int wordOffset = bitIndex & 31;
|
||||
return this.words[arrayIndex] >>> wordOffset & this.version.maxEntryValue;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets the long array that is used to store the data in this BitArray. This is useful for sending packet data.
|
||||
*/
|
||||
public int size() {
|
||||
return this.size;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
* @return {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public int[] getWords() {
|
||||
return this.words;
|
||||
}
|
||||
|
||||
public PaletteVersion getVersion() {
|
||||
return version;
|
||||
}
|
||||
|
||||
@Override
|
||||
public Palette copy() {
|
||||
return new Pow2Palette(this.version, this.size, Arrays.copyOf(this.words, this.words.length));
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
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Reference in New Issue