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Merge pull request #156 from AJ-Ferguson/chunk-fix

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Chunk fixes
This commit is contained in:
Redned 2020-02-23 14:38:20 -06:00 committed by GitHub
commit 35ed1ec916
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 200 additions and 109 deletions
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28
connector/src/main/java/org/geysermc/connector/network/session/GeyserSession.java
View file

@ -37,12 +37,11 @@ import com.github.steveice10.packetlib.event.session.PacketReceivedEvent;
import com.github.steveice10.packetlib.event.session.SessionAdapter;
import com.github.steveice10.packetlib.packet.Packet;
import com.github.steveice10.packetlib.tcp.TcpSessionFactory;
import com.nukkitx.math.GenericMath;
import com.nukkitx.math.TrigMath;
import com.nukkitx.math.vector.Vector2f;
import com.nukkitx.math.vector.Vector2i;
import com.nukkitx.math.vector.Vector3f;
import com.nukkitx.math.vector.Vector3i;
import com.nukkitx.nbt.NbtUtils;
import com.nukkitx.nbt.stream.NBTInputStream;
import com.nukkitx.nbt.tag.CompoundTag;
import com.nukkitx.protocol.bedrock.BedrockServerSession;
import com.nukkitx.protocol.bedrock.data.GamePublishSetting;
@ -55,7 +54,6 @@ import org.geysermc.api.RemoteServer;
import org.geysermc.api.session.AuthData;
import org.geysermc.api.window.FormWindow;
import org.geysermc.connector.GeyserConnector;
import org.geysermc.connector.console.GeyserLogger;
import org.geysermc.connector.entity.PlayerEntity;
import org.geysermc.connector.inventory.PlayerInventory;
import org.geysermc.connector.network.session.cache.*;
@ -64,9 +62,9 @@ import org.geysermc.connector.network.translators.block.BlockTranslator;
import org.geysermc.connector.utils.ChunkUtils;
import org.geysermc.connector.utils.Toolbox;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicInteger;
@Getter
public class GeyserSession implements Player {
@ -88,9 +86,6 @@ public class GeyserSession implements Player {
private DataCache<Packet> javaPacketCache;
@Setter
private Vector2i lastChunkPosition = null;
@Setter
private int renderDistance;
private boolean loggedIn;
@ -103,8 +98,7 @@ public class GeyserSession implements Player {
@Setter
private GameMode gameMode = GameMode.SURVIVAL;
@Setter
private boolean switchingDimension = false;
private final AtomicInteger pendingDimSwitches = new AtomicInteger(0);
private boolean manyDimPackets = false;
private ServerRespawnPacket lastDimPacket = null;
@ -132,6 +126,10 @@ public class GeyserSession implements Player {
public void connect(RemoteServer remoteServer) {
startGame();
this.remoteServer = remoteServer;
if (!(connector.getConfig().getRemote().getAuthType().hashCode() == "online".hashCode())) {
connector.getLogger().info("Attempting to login using offline mode... authentication is disabled.");
authenticate(authenticationData.getName());
}
ChunkUtils.sendEmptyChunks(this, playerEntity.getPosition().toInt(), 0, false);
@ -270,6 +268,16 @@ public class GeyserSession implements Player {
windowCache.showWindow(window, id);
}
public void setRenderDistance(int renderDistance) {
renderDistance = GenericMath.ceil(++renderDistance * TrigMath.SQRT_OF_TWO); //square to circle
if (renderDistance > 32) renderDistance = 32; // <3 u ViaVersion but I don't like crashing clients x)
this.renderDistance = renderDistance;
ChunkRadiusUpdatedPacket chunkRadiusUpdatedPacket = new ChunkRadiusUpdatedPacket();
chunkRadiusUpdatedPacket.setRadius(renderDistance);
upstream.sendPacket(chunkRadiusUpdatedPacket);
}
@Override
public InetSocketAddress getSocketAddress() {
return this.upstream.getAddress();

3
connector/src/main/java/org/geysermc/connector/network/translators/TranslatorsInit.java
View file

@ -146,6 +146,9 @@ public class TranslatorsInit {
Registry.registerJava(ServerMultiBlockChangePacket.class, new JavaMultiBlockChangeTranslator());
Registry.registerJava(ServerUnloadChunkPacket.class, new JavaUnloadChunkTranslator());
Registry.registerJava(ServerUpdateViewPositionPacket.class, new JavaUpdateViewPositionTranslator());
Registry.registerJava(ServerUpdateViewDistancePacket.class, new JavaUpdateViewDistanceTranslator());
Registry.registerJava(ServerOpenWindowPacket.class, new OpenWindowPacketTranslator());
Registry.registerBedrock(AnimatePacket.class, new BedrockAnimateTranslator());

3
connector/src/main/java/org/geysermc/connector/network/translators/bedrock/BedrockActionTranslator.java
View file

@ -115,12 +115,13 @@ public class BedrockActionTranslator extends PacketTranslator<PlayerActionPacket
// Handled in BedrockInventoryTransactionTranslator
break;
case DIMENSION_CHANGE_SUCCESS:
session.setSwitchingDimension(false);
if (session.getPendingDimSwitches().decrementAndGet() == 0) {
//sometimes the client doesn't feel like loading
PlayStatusPacket spawnPacket = new PlayStatusPacket();
spawnPacket.setStatus(PlayStatusPacket.Status.PLAYER_SPAWN);
session.getUpstream().sendPacket(spawnPacket);
entity.updateBedrockAttributes(session);
}
break;
}
}

2
connector/src/main/java/org/geysermc/connector/network/translators/bedrock/BedrockMovePlayerTranslator.java
View file

@ -42,7 +42,7 @@ public class BedrockMovePlayerTranslator extends PacketTranslator<MovePlayerPack
@Override
public void translate(MovePlayerPacket packet, GeyserSession session) {
PlayerEntity entity = session.getPlayerEntity();
if (entity == null || !session.isSpawned() || session.isSwitchingDimension()) return;
if (entity == null || !session.isSpawned() || session.getPendingDimSwitches().get() > 0) return;
if (!session.getUpstream().isInitialized()) {
MoveEntityAbsolutePacket moveEntityBack = new MoveEntityAbsolutePacket();

5
connector/src/main/java/org/geysermc/connector/network/translators/bedrock/BedrockPlayerInitializedTranslator.java
View file

@ -38,11 +38,6 @@ public class BedrockPlayerInitializedTranslator extends PacketTranslator<SetLoca
if (!session.getUpstream().isInitialized()) {
session.getUpstream().setInitialized(true);
if (!(session.getConnector().getConfig().getRemote().getAuthType().hashCode() == "online".hashCode())) {
session.getConnector().getLogger().info("Attempting to login using offline mode... authentication is disabled.");
session.authenticate(session.getAuthenticationData().getName());
}
for (PlayerEntity entity : session.getEntityCache().getEntitiesByType(PlayerEntity.class)) {
if (!entity.isValid()) {
// async skin loading

11
connector/src/main/java/org/geysermc/connector/network/translators/java/JavaJoinGameTranslator.java
View file

@ -31,6 +31,7 @@ import com.nukkitx.protocol.bedrock.packet.*;
import org.geysermc.connector.entity.PlayerEntity;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.translators.PacketTranslator;
import org.geysermc.connector.utils.ChunkUtils;
import org.geysermc.connector.utils.DimensionUtils;
public class JavaJoinGameTranslator extends PacketTranslator<ServerJoinGamePacket> {
@ -59,15 +60,11 @@ public class JavaJoinGameTranslator extends PacketTranslator<ServerJoinGamePacke
entityDataPacket.getMetadata().putAll(entity.getMetadata());
session.getUpstream().sendPacket(entityDataPacket);
session.setRenderDistance(packet.getViewDistance() + 1); // +1 to be sure it includes every chunk
if (session.getRenderDistance() > 32) session.setRenderDistance(32); // <3 u ViaVersion but I don't like crashing clients x)
ChunkRadiusUpdatedPacket chunkRadiusPacket = new ChunkRadiusUpdatedPacket();
chunkRadiusPacket.setRadius(session.getRenderDistance());
session.getUpstream().sendPacket(chunkRadiusPacket);
session.setRenderDistance(packet.getViewDistance());
if (DimensionUtils.javaToBedrock(packet.getDimension()) != entity.getDimension()) {
DimensionUtils.switchDimension(session, packet.getDimension(), false);
ChunkUtils.sendEmptyChunks(session, entity.getPosition().toInt(), 3, true);
DimensionUtils.switchDimension(session, packet.getDimension());
}
}
}

11
connector/src/main/java/org/geysermc/connector/network/translators/java/JavaRespawnTranslator.java
View file

@ -51,14 +51,15 @@ public class JavaRespawnTranslator extends PacketTranslator<ServerRespawnPacket>
session.setGameMode(packet.getGamemode());
if (entity.getDimension() != DimensionUtils.javaToBedrock(packet.getDimension())) {
DimensionUtils.switchDimension(session, packet.getDimension(), false);
DimensionUtils.switchDimension(session, packet.getDimension());
} else {
if (session.isManyDimPackets()) { //reloading world
int fakeDim = entity.getDimension() == 0 ? -1 : 0;
DimensionUtils.switchDimension(session, fakeDim);
DimensionUtils.switchDimension(session, packet.getDimension());
} else {
// Handled in JavaPlayerPositionRotationTranslator
session.setSpawned(false);
if (session.isManyDimPackets()) { //reloading world
int fakeDim = entity.getDimension() == 0 ? -1 : 0;
DimensionUtils.switchDimension(session, fakeDim, true);
DimensionUtils.switchDimension(session, packet.getDimension(), false);
}
}
}

5
connector/src/main/java/org/geysermc/connector/network/translators/java/entity/player/JavaPlayerPositionRotationTranslator.java
View file

@ -51,7 +51,7 @@ public class JavaPlayerPositionRotationTranslator extends PacketTranslator<Serve
entity.moveAbsolute(pos, packet.getYaw(), packet.getPitch());
RespawnPacket respawnPacket = new RespawnPacket();
respawnPacket.setRuntimeEntityId(0);
respawnPacket.setRuntimeEntityId(entity.getGeyserId());
respawnPacket.setPosition(pos);
respawnPacket.setSpawnState(RespawnPacket.State.SERVER_READY);
session.getUpstream().sendPacket(respawnPacket);
@ -78,6 +78,9 @@ public class JavaPlayerPositionRotationTranslator extends PacketTranslator<Serve
session.getUpstream().sendPacket(movePlayerPacket);
session.setSpawned(true);
ClientTeleportConfirmPacket teleportConfirmPacket = new ClientTeleportConfirmPacket(packet.getTeleportId());
session.getDownstream().getSession().send(teleportConfirmPacket);
GeyserLogger.DEFAULT.info("Spawned player at " + packet.getX() + " " + packet.getY() + " " + packet.getZ());
return;
}

42
connector/src/main/java/org/geysermc/connector/network/translators/java/world/JavaChunkDataTranslator.java
View file

@ -25,12 +25,12 @@
package org.geysermc.connector.network.translators.java.world;
import com.github.steveice10.mc.protocol.data.game.chunk.Chunk;
import com.github.steveice10.mc.protocol.data.game.world.block.BlockState;
import com.github.steveice10.mc.protocol.packet.ingame.server.world.ServerChunkDataPacket;
import com.nukkitx.math.vector.Vector2i;
import com.nukkitx.math.vector.Vector3f;
import com.nukkitx.math.vector.Vector3i;
import com.nukkitx.network.VarInts;
import com.nukkitx.protocol.bedrock.packet.LevelChunkPacket;
import com.nukkitx.protocol.bedrock.packet.NetworkChunkPublisherUpdatePacket;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.geysermc.api.Geyser;
@ -46,20 +46,8 @@ public class JavaChunkDataTranslator extends PacketTranslator<ServerChunkDataPac
public void translate(ServerChunkDataPacket packet, GeyserSession session) {
// Not sure if this is safe or not, however without this the client usually times out
Geyser.getConnector().getGeneralThreadPool().execute(() -> {
Vector2i chunkPos = session.getLastChunkPosition();
Vector3f position = session.getPlayerEntity().getPosition();
Vector2i newChunkPos = Vector2i.from(position.getFloorX() >> 4, position.getFloorZ() >> 4);
if (chunkPos == null || !chunkPos.equals(newChunkPos)) {
NetworkChunkPublisherUpdatePacket chunkPublisherUpdatePacket = new NetworkChunkPublisherUpdatePacket();
chunkPublisherUpdatePacket.setPosition(position.toInt());
chunkPublisherUpdatePacket.setRadius(session.getRenderDistance() << 4);
session.getUpstream().sendPacket(chunkPublisherUpdatePacket);
session.setLastChunkPosition(newChunkPos);
}
try {
if (packet.getColumn().getBiomeData() != null) { //Full chunk
ChunkUtils.ChunkData chunkData = ChunkUtils.translateToBedrock(packet.getColumn());
ByteBuf byteBuf = Unpooled.buffer(32);
ChunkSection[] sections = chunkData.sections;
@ -91,6 +79,28 @@ public class JavaChunkDataTranslator extends PacketTranslator<ServerChunkDataPac
levelChunkPacket.setChunkZ(packet.getColumn().getZ());
levelChunkPacket.setData(payload);
session.getUpstream().sendPacket(levelChunkPacket);
} else {
final int xOffset = packet.getColumn().getX() << 4;
final int zOffset = packet.getColumn().getZ() << 4;
Chunk[] chunks = packet.getColumn().getChunks();
for (int i = 0; i < chunks.length; i++) {
Chunk chunk = chunks[i];
if (chunk == null) continue;
final int yOffset = i * 16;
for (int x = 0; x < 16; x++) {
for (int y = 0; y < 16; y++) {
for (int z = 0; z < 16; z++) {
BlockState blockState = chunk.get(x, y, z);
Vector3i pos = Vector3i.from(
x + xOffset,
y + yOffset,
z + zOffset);
ChunkUtils.updateBlock(session, blockState, pos);
}
}
}
}
}
} catch (Exception ex) {
ex.printStackTrace();
}

38
connector/src/main/java/org/geysermc/connector/network/translators/java/world/JavaUpdateViewDistanceTranslator.java Normal file
View file

@ -0,0 +1,38 @@
/*
* Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.connector.network.translators.java.world;
import com.github.steveice10.mc.protocol.packet.ingame.server.world.ServerUpdateViewDistancePacket;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.translators.PacketTranslator;
public class JavaUpdateViewDistanceTranslator extends PacketTranslator<ServerUpdateViewDistancePacket> {
@Override
public void translate(ServerUpdateViewDistancePacket packet, GeyserSession session) {
session.setRenderDistance(packet.getViewDistance());
}
}

43
connector/src/main/java/org/geysermc/connector/network/translators/java/world/JavaUpdateViewPositionTranslator.java Normal file
View file

@ -0,0 +1,43 @@
/*
* Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author GeyserMC
* @link https://github.com/GeyserMC/Geyser
*/
package org.geysermc.connector.network.translators.java.world;
import com.github.steveice10.mc.protocol.packet.ingame.server.world.ServerUpdateViewPositionPacket;
import com.nukkitx.math.vector.Vector3i;
import com.nukkitx.protocol.bedrock.packet.NetworkChunkPublisherUpdatePacket;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.translators.PacketTranslator;
public class JavaUpdateViewPositionTranslator extends PacketTranslator<ServerUpdateViewPositionPacket> {
@Override
public void translate(ServerUpdateViewPositionPacket packet, GeyserSession session) {
NetworkChunkPublisherUpdatePacket chunkPublisherUpdatePacket = new NetworkChunkPublisherUpdatePacket();
chunkPublisherUpdatePacket.setPosition(Vector3i.from(packet.getChunkX() << 4, 0, packet.getChunkZ() << 4));
chunkPublisherUpdatePacket.setRadius(session.getRenderDistance() << 4);
session.getUpstream().sendPacket(chunkPublisherUpdatePacket);
}
}

18
connector/src/main/java/org/geysermc/connector/utils/ChunkUtils.java
View file

@ -31,7 +31,6 @@ import com.github.steveice10.mc.protocol.data.game.entity.metadata.Position;
import com.github.steveice10.mc.protocol.data.game.world.block.BlockState;
import com.nukkitx.math.vector.Vector3i;
import com.nukkitx.protocol.bedrock.packet.LevelChunkPacket;
import com.nukkitx.protocol.bedrock.packet.NetworkChunkPublisherUpdatePacket;
import com.nukkitx.protocol.bedrock.packet.UpdateBlockPacket;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.translators.TranslatorsInit;
@ -76,19 +75,23 @@ public class ChunkUtils {
}
public static void updateBlock(GeyserSession session, BlockState blockState, Position position) {
int blockId = BlockTranslator.getBedrockBlockId(blockState);
Vector3i pos = Vector3i.from(position.getX(), position.getY(), position.getZ());
updateBlock(session, blockState, pos);
}
public static void updateBlock(GeyserSession session, BlockState blockState, Vector3i position) {
int blockId = BlockTranslator.getBedrockBlockId(blockState);
UpdateBlockPacket updateBlockPacket = new UpdateBlockPacket();
updateBlockPacket.setDataLayer(0);
updateBlockPacket.setBlockPosition(pos);
updateBlockPacket.setBlockPosition(position);
updateBlockPacket.setRuntimeId(blockId);
updateBlockPacket.getFlags().add(UpdateBlockPacket.Flag.NEIGHBORS);
session.getUpstream().sendPacket(updateBlockPacket);
UpdateBlockPacket waterPacket = new UpdateBlockPacket();
waterPacket.setDataLayer(1);
waterPacket.setBlockPosition(pos);
waterPacket.setBlockPosition(position);
if (BlockTranslator.isWaterlogged(blockState)) {
waterPacket.setRuntimeId(BEDROCK_WATER_ID);
} else {
@ -100,11 +103,6 @@ public class ChunkUtils {
public static void sendEmptyChunks(GeyserSession session, Vector3i position, int radius, boolean forceUpdate) {
int chunkX = position.getX() >> 4;
int chunkZ = position.getZ() >> 4;
NetworkChunkPublisherUpdatePacket chunkPublisherUpdatePacket = new NetworkChunkPublisherUpdatePacket();
chunkPublisherUpdatePacket.setPosition(position);
chunkPublisherUpdatePacket.setRadius(radius + 1 << 4);
session.getUpstream().sendPacket(chunkPublisherUpdatePacket);
session.setLastChunkPosition(null);
for (int x = -radius; x <= radius; x++) {
for (int z = -radius; z <= radius; z++) {
LevelChunkPacket data = new LevelChunkPacket();
@ -119,7 +117,7 @@ public class ChunkUtils {
Vector3i pos = Vector3i.from(chunkX + x << 4, 80, chunkZ + z << 4);
UpdateBlockPacket blockPacket = new UpdateBlockPacket();
blockPacket.setBlockPosition(pos);
blockPacket.setDataLayer(1);
blockPacket.setDataLayer(0);
blockPacket.setRuntimeId(1);
session.getUpstream().sendPacket(blockPacket);
}

17
connector/src/main/java/org/geysermc/connector/utils/DimensionUtils.java
View file

@ -31,14 +31,18 @@ import org.geysermc.connector.entity.Entity;
import org.geysermc.connector.network.session.GeyserSession;
public class DimensionUtils {
public static void switchDimension(GeyserSession session, int javaDimension, boolean fake) {
public static void switchDimension(GeyserSession session, int javaDimension) {
int bedrockDimension = javaToBedrock(javaDimension);
Entity player = session.getPlayerEntity();
if (bedrockDimension == player.getDimension())
return;
Vector3i pos = Vector3i.from(0, Short.MAX_VALUE, 0);
session.getEntityCache().removeAllEntities();
if (session.getPendingDimSwitches().getAndIncrement() > 0) {
ChunkUtils.sendEmptyChunks(session, player.getPosition().toInt(), 3, true);
}
Vector3i pos = Vector3i.from(0, Short.MAX_VALUE, 0);
ChangeDimensionPacket changeDimensionPacket = new ChangeDimensionPacket();
changeDimensionPacket.setDimension(bedrockDimension);
@ -46,19 +50,14 @@ public class DimensionUtils {
changeDimensionPacket.setPosition(pos.toFloat());
session.getUpstream().sendPacket(changeDimensionPacket);
player.setDimension(bedrockDimension);
player.setPosition(pos.toFloat());
session.setSpawned(false);
//let java server handle portal travel sound
StopSoundPacket stopSoundPacket = new StopSoundPacket();
stopSoundPacket.setStoppingAllSound(true);
stopSoundPacket.setSoundName("");
session.getUpstream().sendPacket(stopSoundPacket);
if (fake) {
ChunkUtils.sendEmptyChunks(session, pos, 2, true);
}
session.setSpawned(false);
session.setSwitchingDimension(true);
}
public static int javaToBedrock(int javaDimension) {

15
connector/src/main/java/org/geysermc/connector/world/chunk/ChunkPosition.java
View file

@ -27,12 +27,14 @@ package org.geysermc.connector.world.chunk;
import com.github.steveice10.mc.protocol.data.game.entity.metadata.Position;
import lombok.AllArgsConstructor;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
@AllArgsConstructor
@EqualsAndHashCode
public class ChunkPosition {
private int x;
@ -43,16 +45,9 @@ public class ChunkPosition {
}
public Position getChunkBlock(int x, int y, int z) {
int chunkX = x % 16;
int chunkY = y % 16;
int chunkZ = z % 16;
if (chunkX < 0)
chunkX = -chunkX;
if (chunkY < 0)
chunkY = -chunkY;
if (chunkZ < 0)
chunkZ = -chunkZ;
int chunkX = x & 15;
int chunkY = y & 15;
int chunkZ = z & 15;
return new Position(chunkX, chunkY, chunkZ);
}