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Optimize chunk index to coordinate conversion + made the chunk map in InstanceContainer using long primitive but non-concurrent, requiring synchronization

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This commit is contained in:
themode 2020-08-17 16:50:23 +02:00
parent 97a1141583
commit e5e1d1614b
7 changed files with 241 additions and 202 deletions
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25
src/main/java/net/minestom/server/entity/Entity.java
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@ -63,14 +63,15 @@ public abstract class Entity implements Viewable, EventHandler, DataContainer {
protected float cacheX, cacheY, cacheZ; // Used to synchronize with #getPosition
protected float lastYaw, lastPitch;
protected float cacheYaw, cachePitch;
// Synchronization
private static final long SYNCHRONIZATION_DELAY = 1500; // In ms
private BoundingBox boundingBox;
protected Entity vehicle;
// Velocity
protected Vector velocity = new Vector(); // Movement in block per second
protected long lastVelocityUpdateTime; // Reset velocity to 0 after countdown
protected float gravityDragPerTick;
protected float eyeHeight;
@ -84,13 +85,17 @@ public abstract class Entity implements Viewable, EventHandler, DataContainer {
private boolean removed;
private boolean shouldRemove;
private long scheduledRemoveTime;
private final Set<Entity> passengers = new CopyOnWriteArraySet<>();
private long lastUpdate;
private final EntityType entityType;
protected long lastVelocityUpdateTime; // Reset velocity to 0 after countdown
private final Map<Class<? extends Event>, List<EventCallback>> eventCallbacks = new ConcurrentHashMap<>();
// Synchronization
private static final long SYNCHRONIZATION_DELAY = 1500; // In ms
private long lastSynchronizationTime;
private final Map<Class<? extends Event>, List<EventCallback>> eventCallbacks = new ConcurrentHashMap<>();
// Metadata
protected boolean onFire;
protected boolean crouched;
@ -990,8 +995,10 @@ public abstract class Entity implements Viewable, EventHandler, DataContainer {
final int[] oldChunksEntity = ArrayUtils.getDifferencesBetweenArray(lastVisibleChunksEntity, updatedVisibleChunksEntity);
for (int index : oldChunksEntity) {
final int[] chunkPos = ChunkUtils.getChunkCoord(lastVisibleChunksEntity[index]);
final Chunk chunk = instance.getChunk(chunkPos[0], chunkPos[1]);
final long chunkIndex = lastVisibleChunksEntity[index];
final int chunkX = ChunkUtils.getChunkCoordX(chunkIndex);
final int chunkZ = ChunkUtils.getChunkCoordZ(chunkIndex);
final Chunk chunk = instance.getChunk(chunkX, chunkZ);
if (chunk == null)
continue;
instance.getChunkEntities(chunk).forEach(ent -> {
@ -1010,8 +1017,10 @@ public abstract class Entity implements Viewable, EventHandler, DataContainer {
final int[] newChunksEntity = ArrayUtils.getDifferencesBetweenArray(updatedVisibleChunksEntity, lastVisibleChunksEntity);
for (int index : newChunksEntity) {
final int[] chunkPos = ChunkUtils.getChunkCoord(updatedVisibleChunksEntity[index]);
final Chunk chunk = instance.getChunk(chunkPos[0], chunkPos[1]);
final long chunkIndex = updatedVisibleChunksEntity[index];
final int chunkX = ChunkUtils.getChunkCoordX(chunkIndex);
final int chunkZ = ChunkUtils.getChunkCoordZ(chunkIndex);
final Chunk chunk = instance.getChunk(chunkX, chunkZ);
if (chunk == null)
continue;
instance.getChunkEntities(chunk).forEach(ent -> {

24
src/main/java/net/minestom/server/entity/Player.java
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@ -551,9 +551,9 @@ public class Player extends LivingEntity implements CommandSender {
AtomicInteger counter = new AtomicInteger(0);
for (long visibleChunk : visibleChunks) {
final int[] chunkPos = ChunkUtils.getChunkCoord(visibleChunk);
final int chunkX = chunkPos[0];
final int chunkZ = chunkPos[1];
final int chunkX = ChunkUtils.getChunkCoordX(visibleChunk);
final int chunkZ = ChunkUtils.getChunkCoordZ(visibleChunk);
Consumer<Chunk> callback = (chunk) -> {
if (chunk != null) {
chunk.addViewer(this);
@ -1200,13 +1200,16 @@ public class Player extends LivingEntity implements CommandSender {
// Unload old chunks
for (int index : oldChunks) {
final int[] chunkPos = ChunkUtils.getChunkCoord(lastVisibleChunks[index]);
final long chunkIndex = lastVisibleChunks[index];
final int chunkX = ChunkUtils.getChunkCoordX(chunkIndex);
final int chunkZ = ChunkUtils.getChunkCoordZ(chunkIndex);
UnloadChunkPacket unloadChunkPacket = new UnloadChunkPacket();
unloadChunkPacket.chunkX = chunkPos[0];
unloadChunkPacket.chunkZ = chunkPos[1];
unloadChunkPacket.chunkX = chunkX;
unloadChunkPacket.chunkZ = chunkZ;
playerConnection.sendPacket(unloadChunkPacket);
final Chunk chunk = instance.getChunk(chunkPos[0], chunkPos[1]);
final Chunk chunk = instance.getChunk(chunkX, chunkZ);
if (chunk != null)
chunk.removeViewer(this);
}
@ -1215,8 +1218,11 @@ public class Player extends LivingEntity implements CommandSender {
// Load new chunks
for (int index : newChunks) {
final int[] chunkPos = ChunkUtils.getChunkCoord(updatedVisibleChunks[index]);
instance.loadOptionalChunk(chunkPos[0], chunkPos[1], chunk -> {
final long chunkIndex = updatedVisibleChunks[index];
final int chunkX = ChunkUtils.getChunkCoordX(chunkIndex);
final int chunkZ = ChunkUtils.getChunkCoordZ(chunkIndex);
instance.loadOptionalChunk(chunkX, chunkZ, chunk -> {
if (chunk == null) {
// Cannot load chunk (auto load is not enabled)
return;

2
src/main/java/net/minestom/server/instance/Instance.java
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@ -832,7 +832,7 @@ public abstract class Instance implements BlockModifier, EventHandler, DataConta
}
private Set<Entity> getEntitiesInChunk(long index) {
final Set<Entity> entities = chunkEntities.getOrDefault(index, new CopyOnWriteArraySet<>());
final Set<Entity> entities = chunkEntities.computeIfAbsent(index, i -> new CopyOnWriteArraySet<>());
return entities;
}

26
src/main/java/net/minestom/server/instance/InstanceContainer.java
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@ -1,5 +1,7 @@
package net.minestom.server.instance;
import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
import lombok.Setter;
import net.minestom.server.MinecraftServer;
import net.minestom.server.data.Data;
@ -30,7 +32,6 @@ import net.minestom.server.world.DimensionType;
import net.minestom.server.world.biomes.Biome;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.locks.Lock;
@ -52,7 +53,8 @@ public class InstanceContainer extends Instance {
private List<SharedInstance> sharedInstances = new CopyOnWriteArrayList<>();
private ChunkGenerator chunkGenerator;
private Map<Long, Chunk> chunks = new ConcurrentHashMap<>();
// WARNING: need to be synchronized properly
private Long2ObjectMap<Chunk> chunks = new Long2ObjectOpenHashMap();
private Set<Chunk> scheduledChunksToRemove = new HashSet<>();
private ReadWriteLock changingBlockLock = new ReentrantReadWriteLock();
@ -333,7 +335,8 @@ public class InstanceContainer extends Instance {
@Override
public Chunk getChunk(int chunkX, int chunkZ) {
final Chunk chunk = chunks.get(ChunkUtils.getChunkIndex(chunkX, chunkZ));
final long index = ChunkUtils.getChunkIndex(chunkX, chunkZ);
final Chunk chunk = chunks.get(index);
return ChunkUtils.isLoaded(chunk) ? chunk : null;
}
@ -390,11 +393,13 @@ public class InstanceContainer extends Instance {
e.printStackTrace();
}
} else {
final Iterator<Chunk> chunks = getChunks().iterator();
while (chunks.hasNext()) {
final Chunk chunk = chunks.next();
final boolean isLast = !chunks.hasNext();
saveChunkToStorageFolder(chunk, isLast ? callback : null);
synchronized (chunks) {
final Iterator<Chunk> chunkIterator = chunks.values().iterator();
while (chunkIterator.hasNext()) {
final Chunk chunk = chunkIterator.next();
final boolean isLast = !chunkIterator.hasNext();
saveChunkToStorageFolder(chunk, isLast ? callback : null);
}
}
}
}
@ -503,6 +508,11 @@ public class InstanceContainer extends Instance {
this.chunkGenerator = chunkGenerator;
}
/**
* Get all the instance chunks
*
* @return the chunks of this instance
*/
public Collection<Chunk> getChunks() {
return Collections.unmodifiableCollection(chunks.values());
}

6
src/main/java/net/minestom/server/thread/ThreadProvider.java
View File

@ -94,8 +94,10 @@ public abstract class ThreadProvider {
* @param time the time of the update in milliseconds
*/
protected void processChunkTick(Instance instance, long chunkIndex, long time) {
final int[] chunkCoordinates = ChunkUtils.getChunkCoord(chunkIndex);
final Chunk chunk = instance.getChunk(chunkCoordinates[0], chunkCoordinates[1]);
final int chunkX = ChunkUtils.getChunkCoordX(chunkIndex);
final int chunkZ = ChunkUtils.getChunkCoordZ(chunkIndex);
final Chunk chunk = instance.getChunk(chunkX, chunkZ);
if (!ChunkUtils.isLoaded(chunk))
return;

354
src/main/java/net/minestom/server/utils/chunk/ChunkUtils.java
View File

@ -10,199 +10,211 @@ import net.minestom.server.utils.Position;
public final class ChunkUtils {
private ChunkUtils() {
private ChunkUtils() {
}
}
/**
* Get if a chunk is loaded
*
* @param chunk the chunk to check
* @return true if the chunk is loaded, false otherwise
*/
public static boolean isLoaded(Chunk chunk) {
return chunk != null && chunk.isLoaded();
}
/**
* Get if a chunk is loaded
*
* @param chunk the chunk to check
* @return true if the chunk is loaded, false otherwise
*/
public static boolean isLoaded(Chunk chunk) {
return chunk != null && chunk.isLoaded();
}
/**
* Get if a chunk is loaded
*
* @param instance the instance to check
* @param x instance X coordinate
* @param z instance Z coordinate
* @return true if the chunk is loaded, false otherwise
*/
public static boolean isLoaded(Instance instance, float x, float z) {
final int chunkX = getChunkCoordinate((int) x);
final int chunkZ = getChunkCoordinate((int) z);
/**
* Get if a chunk is loaded
*
* @param instance the instance to check
* @param x instance X coordinate
* @param z instance Z coordinate
* @return true if the chunk is loaded, false otherwise
*/
public static boolean isLoaded(Instance instance, float x, float z) {
final int chunkX = getChunkCoordinate((int) x);
final int chunkZ = getChunkCoordinate((int) z);
final Chunk chunk = instance.getChunk(chunkX, chunkZ);
return isLoaded(chunk);
}
final Chunk chunk = instance.getChunk(chunkX, chunkZ);
return isLoaded(chunk);
}
/**
* @param xz the instance coordinate to convert
* @return the chunk X or Z based on the argument
*/
public static int getChunkCoordinate(int xz) {
// Assume Chunk.CHUNK_SIZE_X == Chunk.CHUNK_SIZE_Z
return Math.floorDiv(xz, Chunk.CHUNK_SIZE_X);
}
/**
* @param xz the instance coordinate to convert
* @return the chunk X or Z based on the argument
*/
public static int getChunkCoordinate(int xz) {
// Assume Chunk.CHUNK_SIZE_X == Chunk.CHUNK_SIZE_Z
return Math.floorDiv(xz, Chunk.CHUNK_SIZE_X);
}
/**
* Get the chunk index of chunk coordinates
*
* @param chunkX the chunk X
* @param chunkZ the chunk Z
* @return a number storing the chunk X and Z
*/
public static long getChunkIndex(int chunkX, int chunkZ) {
return (((long) chunkX) << 32) | (chunkZ & 0xffffffffL);
}
/**
* Get the chunk index of chunk coordinates
*
* @param chunkX the chunk X
* @param chunkZ the chunk Z
* @return a number storing the chunk X and Z
*/
public static long getChunkIndex(int chunkX, int chunkZ) {
return (((long) chunkX) << 32) | (chunkZ & 0xffffffffL);
}
public static long getChunkIndexWithSection(int chunkX, int chunkZ, int section) {
long l = 0L;
l |= ((long) chunkX & 4194303L) << 42;
l |= ((long) section & 1048575L);
l |= ((long) chunkZ & 4194303L) << 20;
return l;
}
public static long getChunkIndexWithSection(int chunkX, int chunkZ, int section) {
long l = 0L;
l |= ((long) chunkX & 4194303L) << 42;
l |= ((long) section & 1048575L);
l |= ((long) chunkZ & 4194303L) << 20;
return l;
}
/**
* @param index the chunk index computed by {@link #getChunkIndex(int, int)}
* @return an array containing both the chunk X and Z (index 0 = X; index 1 = Z)
*/
public static int[] getChunkCoord(long index) {
final int chunkX = (int) (index >> 32);
final int chunkZ = (int) index;
return new int[]{chunkX, chunkZ};
}
/**
* Convert a chunk index to its chunk X position
*
* @param index the chunk index computed by {@link #getChunkIndex(int, int)}
* @return the chunk X based on the index
*/
public static int getChunkCoordX(long index) {
return (int) (index >> 32);
}
public static short getLocalBlockPosAsShort(int x, int y, int z) {
x = x % 16;
z = z % 16;
return (short) (x << 8 | y << 4 | z);
}
/**
* Convert a chunk index to its chunk Z position
*
* @param index the chunk index computed by {@link #getChunkIndex(int, int)}
* @return the chunk Z based on the index
*/
public static int getChunkCoordZ(long index) {
final int chunkX = (int) (index >> 32);
final int chunkZ = (int) index;
return (int) index;
}
public static int getSectionAt(int y) {
return y / Chunk.CHUNK_SECTION_SIZE;
}
public static short getLocalBlockPosAsShort(int x, int y, int z) {
x = x % 16;
z = z % 16;
return (short) (x << 8 | y << 4 | z);
}
/**
* Get the chunks in range of a position
*
* @param position the initial position
* @param range how far should it retrieves chunk
* @return an array containing chunks index which can be converted using {@link #getChunkCoord(long)}
*/
public static long[] getChunksInRange(final Position position, int range) {
range = range * 2;
long[] visibleChunks = new long[MathUtils.square(range + 1)];
final int startLoop = -(range / 2);
final int endLoop = range / 2 + 1;
int counter = 0;
for (int x = startLoop; x < endLoop; x++) {
for (int z = startLoop; z < endLoop; z++) {
final int chunkX = getChunkCoordinate((int) (position.getX() + Chunk.CHUNK_SIZE_X * x));
final int chunkZ = getChunkCoordinate((int) (position.getZ() + Chunk.CHUNK_SIZE_Z * z));
visibleChunks[counter] = getChunkIndex(chunkX, chunkZ);
counter++;
}
}
return visibleChunks;
}
public static int getSectionAt(int y) {
return y / Chunk.CHUNK_SECTION_SIZE;
}
/**
* Get all the loaded neighbours of a chunk and itself, no diagonals
*
* @param instance the instance of the chunks
* @param chunkX the chunk X
* @param chunkZ the chunk Z
* @return an array containing all the loaded neighbours
* can be deserialized using {@link #indexToChunkPosition(int)}
*/
public static long[] getNeighbours(Instance instance, int chunkX, int chunkZ) {
LongList chunks = new LongArrayList();
// Constants used to loop through the neighbors
final int[] posX = {1, 0, -1};
final int[] posZ = {1, 0, -1};
/**
* Get the chunks in range of a position
*
* @param position the initial position
* @param range how far should it retrieves chunk
* @return an array containing chunks index
*/
public static long[] getChunksInRange(final Position position, int range) {
range = range * 2;
long[] visibleChunks = new long[MathUtils.square(range + 1)];
final int startLoop = -(range / 2);
final int endLoop = range / 2 + 1;
int counter = 0;
for (int x = startLoop; x < endLoop; x++) {
for (int z = startLoop; z < endLoop; z++) {
final int chunkX = getChunkCoordinate((int) (position.getX() + Chunk.CHUNK_SIZE_X * x));
final int chunkZ = getChunkCoordinate((int) (position.getZ() + Chunk.CHUNK_SIZE_Z * z));
visibleChunks[counter] = getChunkIndex(chunkX, chunkZ);
counter++;
}
}
return visibleChunks;
}
for (int x : posX) {
for (int z : posZ) {
/**
* Get all the loaded neighbours of a chunk and itself, no diagonals
*
* @param instance the instance of the chunks
* @param chunkX the chunk X
* @param chunkZ the chunk Z
* @return an array containing all the loaded neighbours
* can be deserialized using {@link #indexToChunkPosition(int)}
*/
public static long[] getNeighbours(Instance instance, int chunkX, int chunkZ) {
LongList chunks = new LongArrayList();
// Constants used to loop through the neighbors
final int[] posX = {1, 0, -1};
final int[] posZ = {1, 0, -1};
// No diagonal check
if ((Math.abs(x) + Math.abs(z)) == 2)
continue;
for (int x : posX) {
for (int z : posZ) {
final int targetX = chunkX + x;
final int targetZ = chunkZ + z;
final Chunk chunk = instance.getChunk(targetX, targetZ);
if (ChunkUtils.isLoaded(chunk)) {
// Chunk is loaded, add it
final long index = getChunkIndex(targetX, targetZ);
chunks.add(index);
}
// No diagonal check
if ((Math.abs(x) + Math.abs(z)) == 2)
continue;
}
}
return chunks.toArray(new long[0]);
}
final int targetX = chunkX + x;
final int targetZ = chunkZ + z;
final Chunk chunk = instance.getChunk(targetX, targetZ);
if (ChunkUtils.isLoaded(chunk)) {
// Chunk is loaded, add it
final long index = getChunkIndex(targetX, targetZ);
chunks.add(index);
}
/**
* Get the block index of a position
*
* @param x the block X
* @param y the block Y
* @param z the block Z
* @return an index which can be used to store and retrieve later data linked to a block position
*/
public static int getBlockIndex(int x, int y, int z) {
x = x % Chunk.CHUNK_SIZE_X;
z = z % Chunk.CHUNK_SIZE_Z;
}
}
return chunks.toArray(new long[0]);
}
short index = (short) (x & 0x000F);
index |= (y << 4) & 0x0FF0;
index |= (z << 12) & 0xF000;
return index & 0xffff;
}
/**
* Get the block index of a position
*
* @param x the block X
* @param y the block Y
* @param z the block Z
* @return an index which can be used to store and retrieve later data linked to a block position
*/
public static int getBlockIndex(int x, int y, int z) {
x = x % Chunk.CHUNK_SIZE_X;
z = z % Chunk.CHUNK_SIZE_Z;
/**
* @param index an index computed from {@link #getBlockIndex(int, int, int)}
* @param chunkX the chunk X
* @param chunkZ the chunk Z
* @return the instance position of the block located in {@code index}
*/
public static BlockPosition getBlockPosition(int index, int chunkX, int chunkZ) {
final int[] pos = indexToPosition(index, chunkX, chunkZ);
return new BlockPosition(pos[0], pos[1], pos[2]);
}
short index = (short) (x & 0x000F);
index |= (y << 4) & 0x0FF0;
index |= (z << 12) & 0xF000;
return index & 0xffff;
}
/**
* @param index an index computed from {@link #getBlockIndex(int, int, int)}
* @param chunkX the chunk X
* @param chunkZ the chunk Z
* @return the world position of the specified index with its chunks being {@code chunkX} and {@code chunk Z}
* positions in the array are in the order X/Y/Z
*/
public static int[] indexToPosition(int index, int chunkX, int chunkZ) {
int z = (byte) (index >> 12 & 0xF);
final int y = (index >>> 4 & 0xFF);
// index >> 0 = index
int x = (byte) (index & 0xF);
/**
* @param index an index computed from {@link #getBlockIndex(int, int, int)}
* @param chunkX the chunk X
* @param chunkZ the chunk Z
* @return the instance position of the block located in {@code index}
*/
public static BlockPosition getBlockPosition(int index, int chunkX, int chunkZ) {
final int[] pos = indexToPosition(index, chunkX, chunkZ);
return new BlockPosition(pos[0], pos[1], pos[2]);
}
x += 16 * chunkX;
z += 16 * chunkZ;
/**
* @param index an index computed from {@link #getBlockIndex(int, int, int)}
* @param chunkX the chunk X
* @param chunkZ the chunk Z
* @return the world position of the specified index with its chunks being {@code chunkX} and {@code chunk Z}
* positions in the array are in the order X/Y/Z
*/
public static int[] indexToPosition(int index, int chunkX, int chunkZ) {
int z = (byte) (index >> 12 & 0xF);
final int y = (index >>> 4 & 0xFF);
// index >> 0 = index
int x = (byte) (index & 0xF);
return new int[]{x, y, z};
}
x += 16 * chunkX;
z += 16 * chunkZ;
/**
* @param index an index computed from {@link #getBlockIndex(int, int, int)}
* @return the chunk position (O-15) of the specified index,
* positions in the array are in the order X/Y/Z
*/
public static int[] indexToChunkPosition(int index) {
return indexToPosition(index, 0, 0);
}
return new int[]{x, y, z};
}
/**
* @param index an index computed from {@link #getBlockIndex(int, int, int)}
* @return the chunk position (O-15) of the specified index,
* positions in the array are in the order X/Y/Z
*/
public static int[] indexToChunkPosition(int index) {
return indexToPosition(index, 0, 0);
}
}

6
src/main/java/net/minestom/server/utils/entity/EntityUtils.java
View File

@ -25,9 +25,9 @@ public final class EntityUtils {
long[] visibleChunksEntity = ChunkUtils.getChunksInRange(ent2.getPosition(), MinecraftServer.ENTITY_VIEW_DISTANCE);
for (long visibleChunk : visibleChunksEntity) {
final int[] chunkPos = ChunkUtils.getChunkCoord(visibleChunk);
final int chunkX = chunkPos[0];
final int chunkZ = chunkPos[1];
final int chunkX = ChunkUtils.getChunkCoordX(visibleChunk);
final int chunkZ = ChunkUtils.getChunkCoordZ(visibleChunk);
if (chunk.getChunkX() == chunkX && chunk.getChunkZ() == chunkZ)
return true;
}