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LocationLookup.java
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LocationLookup.java
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package net.citizensnpcs.api;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.Future;
import java.util.function.BiConsumer;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.entity.Player;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.event.world.WorldUnloadEvent;
import org.bukkit.scheduler.BukkitRunnable;
import com.google.common.collect.Collections2;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import ch.ethz.globis.phtree.PhTreeF;
import net.citizensnpcs.api.npc.NPC;
public class LocationLookup extends BukkitRunnable {
private final Map<String, PerPlayerMetadata<?>> metadata = Maps.newHashMap();
private Future<Map<UUID, PhTreeF<NPC>>> npcFuture = null;
private Map<UUID, PhTreeF<NPC>> npcWorlds = Maps.newHashMap();
private Future<Map<UUID, PhTreeF<Player>>> playerFuture = null;
private Map<UUID, PhTreeF<Player>> worlds = Maps.newHashMap();
public PerPlayerMetadata<?> getMetadata(String key) {
return metadata.get(key);
}
public Iterable<NPC> getNearbyNPCs(Location base, double dist) {
PhTreeF<NPC> tree = npcWorlds.get(base.getWorld().getUID());
if (tree == null)
return Collections.emptyList();
return () -> tree.rangeQuery(dist, base.getX(), base.getY(), base.getZ());
}
public Iterable<NPC> getNearbyNPCs(NPC npc) {
return getNearbyNPCs(npc.getStoredLocation(), npc.data().get(NPC.Metadata.TRACKING_RANGE, 64));
}
public Iterable<NPC> getNearbyNPCs(World world, double[] min, double[] max) {
PhTreeF<NPC> tree = npcWorlds.get(world.getUID());
if (tree == null)
return Collections.emptyList();
return () -> tree.query(min, max);
}
public Iterable<Player> getNearbyPlayers(Location base, double dist) {
PhTreeF<Player> tree = worlds.get(base.getWorld().getUID());
if (tree == null)
return Collections.emptyList();
return () -> tree.rangeQuery(dist, base.getX(), base.getY(), base.getZ());
}
public Iterable<Player> getNearbyPlayers(NPC npc) {
return getNearbyPlayers(npc.getStoredLocation(), npc.data().get(NPC.Metadata.TRACKING_RANGE, 64));
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public void onJoin(PlayerJoinEvent event) {
Bukkit.getScheduler().scheduleSyncDelayedTask(CitizensAPI.getPlugin(), () -> {
updateWorld(event.getPlayer().getWorld());
for (PerPlayerMetadata meta : metadata.values()) {
if (meta.onJoin != null) {
meta.onJoin.accept(meta, event);
}
}
});
}
public void onQuit(PlayerQuitEvent event) {
Bukkit.getScheduler().scheduleSyncDelayedTask(CitizensAPI.getPlugin(), () -> {
updateWorld(event.getPlayer().getWorld());
for (PerPlayerMetadata<?> meta : metadata.values()) {
meta.sent.remove(event.getPlayer().getUniqueId());
}
});
}
public void onWorldUnload(WorldUnloadEvent event) {
PhTreeF<Player> cache = worlds.remove(event.getWorld().getUID());
if (cache != null) {
cache.clear();
}
}
@SuppressWarnings("unchecked")
public <T> PerPlayerMetadata<T> registerMetadata(String key,
BiConsumer<PerPlayerMetadata<T>, PlayerJoinEvent> onJoin) {
return (PerPlayerMetadata<T>) metadata.computeIfAbsent(key, s -> new PerPlayerMetadata<>(onJoin));
}
@Override
public void run() {
if (npcFuture != null && npcFuture.isDone()) {
try {
npcWorlds = npcFuture.get();
} catch (InterruptedException | ExecutionException e) {
e.printStackTrace();
}
npcFuture = null;
}
if (npcFuture == null) {
Map<UUID, Collection<TreeFactory.Node<NPC>>> map = Maps.newHashMap();
Location loc = new Location(null, 0, 0, 0);
for (NPC npc : CitizensAPI.getNPCRegistry()) {
if (!npc.isSpawned())
continue;
npc.getEntity().getLocation(loc);
Collection<TreeFactory.Node<NPC>> nodes = map.computeIfAbsent(npc.getEntity().getWorld().getUID(),
uid -> Lists.newArrayList());
nodes.add(new TreeFactory.Node<>(new double[] { loc.getX(), loc.getY(), loc.getZ() }, npc));
}
npcFuture = ForkJoinPool.commonPool().submit(new TreeFactory<>(map));
}
if (playerFuture != null && playerFuture.isDone()) {
try {
worlds = playerFuture.get();
} catch (InterruptedException | ExecutionException e) {
e.printStackTrace();
}
playerFuture = null;
}
if (playerFuture == null) {
Map<UUID, Collection<TreeFactory.Node<Player>>> map = Maps.newHashMap();
Location loc = new Location(null, 0, 0, 0);
for (World world : Bukkit.getServer().getWorlds()) {
Collection<Player> players = Collections2.filter(world.getPlayers(), p -> !p.hasMetadata("NPC"));
if (players.isEmpty())
continue;
map.put(world.getUID(), Collections2.transform(players, p -> {
p.getLocation(loc);
return new TreeFactory.Node<>(new double[] { loc.getX(), loc.getY(), loc.getZ() }, p);
}));
}
playerFuture = ForkJoinPool.commonPool().submit(new TreeFactory<>(map));
}
}
// TODO: remove?
private void updateWorld(World world) {
Collection<Player> players = Collections2.filter(world.getPlayers(), p -> !p.hasMetadata("NPC"));
if (players.isEmpty()) {
worlds.remove(world.getUID());
return;
}
PhTreeF<Player> tree = worlds.computeIfAbsent(world.getUID(), uid -> PhTreeF.create(3));
tree.clear();
Location loc = new Location(null, 0, 0, 0);
for (Player player : players) {
player.getLocation(loc);
tree.put(new double[] { loc.getX(), loc.getY(), loc.getZ() }, player);
}
}
public static class PerPlayerMetadata<T> {
private final BiConsumer<PerPlayerMetadata<T>, PlayerJoinEvent> onJoin;
private final Map<UUID, Map<String, T>> sent = Maps.newHashMap();
public PerPlayerMetadata(BiConsumer<PerPlayerMetadata<T>, PlayerJoinEvent> onJoin) {
this.onJoin = onJoin;
}
public T getMarker(UUID key, String value) {
return sent.getOrDefault(key, Collections.emptyMap()).get(value);
}
public boolean has(UUID key, String value) {
return sent.getOrDefault(key, Collections.emptyMap()).containsKey(value);
}
public boolean remove(UUID key, String value) {
return sent.getOrDefault(key, Collections.emptyMap()).remove(value) != null;
}
public void removeAllValues(String value) {
for (Map<String, T> map : sent.values()) {
map.remove(value);
}
}
public void set(UUID key, String value, T marker) {
if (marker instanceof Location || marker instanceof World)
throw new IllegalArgumentException("Invalid marker");
sent.computeIfAbsent(key, k -> Maps.newHashMap()).put(value, marker);
}
}
private static final class TreeFactory<T> implements Callable<Map<UUID, PhTreeF<T>>> {
private final Map<UUID, Collection<Node<T>>> source;
public TreeFactory(Map<UUID, Collection<Node<T>>> source) {
this.source = source;
}
@Override
public Map<UUID, PhTreeF<T>> call() throws Exception {
Map<UUID, PhTreeF<T>> result = Maps.newHashMap();
for (UUID uuid : source.keySet()) {
PhTreeF<T> tree = PhTreeF.create(3);
for (Node<T> entry : source.get(uuid)) {
tree.put(entry.loc, entry.t);
}
result.put(uuid, tree);
}
return result;
}
public static class Node<T> {
public double[] loc;
public T t;
public Node(double[] loc, T t) {
this.loc = loc;
this.t = t;
}
}
}
}