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PlayerlistTrackerEntry.java
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PlayerlistTrackerEntry.java
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package net.citizensnpcs.nms.v1_13_R2.util;
import java.lang.invoke.MethodHandle;
import java.lang.reflect.Field;
import java.util.Map;
import java.util.Set;
import org.bukkit.Bukkit;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
import com.google.common.collect.ForwardingMap;
import com.google.common.collect.ForwardingSet;
import net.citizensnpcs.Settings.Setting;
import net.citizensnpcs.api.CitizensAPI;
import net.citizensnpcs.api.event.NPCSeenByPlayerEvent;
import net.citizensnpcs.api.npc.NPC;
import net.citizensnpcs.nms.v1_13_R2.entity.EntityHumanNPC;
import net.citizensnpcs.npc.ai.NPCHolder;
import net.citizensnpcs.util.NMS;
import net.minecraft.server.v1_13_R2.Entity;
import net.minecraft.server.v1_13_R2.EntityPlayer;
import net.minecraft.server.v1_13_R2.EntityTrackerEntry;
import net.minecraft.server.v1_13_R2.PacketPlayOutAnimation;
public class PlayerlistTrackerEntry extends EntityTrackerEntry {
private final Entity tracker;
private Map<EntityPlayer, Boolean> trackingMap;
public PlayerlistTrackerEntry(Entity entity, int i, int j, int k, boolean flag) {
super(entity, i, j, k, flag);
tracker = getTracker(this);
if (TRACKING_MAP_SETTER != null) {
try {
Map<EntityPlayer, Boolean> delegate = (Map<EntityPlayer, Boolean>) TRACKING_MAP_GETTER.invoke(this);
trackingMap = delegate;
TRACKING_MAP_SETTER.invoke(this, new ForwardingMap<EntityPlayer, Boolean>() {
@Override
protected Map<EntityPlayer, Boolean> delegate() {
return delegate;
}
@Override
public Boolean put(EntityPlayer player, Boolean value) {
Boolean res = super.put(player, value);
if (res == null) {
updateLastPlayer(player);
}
return res;
}
});
} catch (Throwable e) {
e.printStackTrace();
}
} else {
try {
Set<EntityPlayer> delegate = super.trackedPlayers;
TRACKING_SET_SETTER.invoke(this, new ForwardingSet<EntityPlayer>() {
@Override
public boolean add(EntityPlayer player) {
boolean res = super.add(player);
if (res) {
updateLastPlayer(player);
}
return res;
}
@Override
protected Set<EntityPlayer> delegate() {
return delegate;
}
});
} catch (Throwable e) {
e.printStackTrace();
}
}
}
public PlayerlistTrackerEntry(EntityTrackerEntry entry) {
this(getTracker(entry), getE(entry), getF(entry), getG(entry), getU(entry));
}
private boolean isTracked(EntityPlayer player) {
return trackingMap != null ? trackingMap.containsKey(player) : trackedPlayers.contains(player);
}
public void updateLastPlayer(EntityPlayer lastUpdatedPlayer) {
if (tracker.dead || lastUpdatedPlayer == null || tracker.getBukkitEntity().getType() != EntityType.PLAYER)
return;
final EntityPlayer entityplayer = lastUpdatedPlayer;
NMS.sendTabListAdd(entityplayer.getBukkitEntity(), (Player) tracker.getBukkitEntity());
lastUpdatedPlayer = null;
Bukkit.getScheduler().scheduleSyncDelayedTask(CitizensAPI.getPlugin(), () -> {
NMSImpl.sendPacket(entityplayer.getBukkitEntity(), new PacketPlayOutAnimation(tracker, 0));
}, 1);
if (!Setting.DISABLE_TABLIST.asBoolean())
return;
Bukkit.getScheduler().scheduleSyncDelayedTask(CitizensAPI.getPlugin(),
() -> NMS.sendTabListRemove(entityplayer.getBukkitEntity(), (Player) tracker.getBukkitEntity()),
Setting.TABLIST_REMOVE_PACKET_DELAY.asTicks());
}
@Override
public void updatePlayer(final EntityPlayer entityplayer) {
if (!tracker.dead && !isTracked(entityplayer) && tracker instanceof NPCHolder) {
NPC npc = ((NPCHolder) tracker).getNPC();
NPCSeenByPlayerEvent event = new NPCSeenByPlayerEvent(npc, entityplayer.getBukkitEntity());
Bukkit.getPluginManager().callEvent(event);
if (event.isCancelled())
return;
Integer trackingRange = npc.data().<Integer> get(NPC.Metadata.TRACKING_RANGE);
if (TRACKING_RANGE_SETTER != null && trackingRange != null
&& npc.data().get("last-tracking-range", -1) != trackingRange.intValue()) {
try {
TRACKING_RANGE_SETTER.invoke(this, trackingRange);
npc.data().set("last-tracking-range", trackingRange);
} catch (Throwable e) {
e.printStackTrace();
}
}
}
if (entityplayer instanceof EntityHumanNPC)
return;
super.updatePlayer(entityplayer);
}
private static int getE(EntityTrackerEntry entry) {
try {
return (Integer) E.get(entry);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return 0;
}
private static int getF(EntityTrackerEntry entry) {
try {
return (Integer) F.get(entry);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return 0;
}
private static int getG(EntityTrackerEntry entry) {
try {
return (Integer) G.get(entry);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return 0;
}
private static Entity getTracker(EntityTrackerEntry entry) {
try {
return (Entity) TRACKER.get(entry);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return null;
}
private static boolean getU(EntityTrackerEntry entry) {
try {
return (Boolean) U.get(entry);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return false;
}
private static Field E = NMS.getField(EntityTrackerEntry.class, "e");
private static Field F = NMS.getField(EntityTrackerEntry.class, "f");
private static Field G = NMS.getField(EntityTrackerEntry.class, "g");
private static Field TRACKER = NMS.getField(EntityTrackerEntry.class, "tracker");
private static MethodHandle TRACKING_MAP_GETTER;
private static MethodHandle TRACKING_MAP_SETTER;
private static final MethodHandle TRACKING_RANGE_SETTER = NMS.getFirstFinalSetter(EntityTrackerEntry.class,
int.class);
private static final MethodHandle TRACKING_SET_SETTER = NMS.getFirstFinalSetter(EntityTrackerEntry.class,
Set.class);
private static Field U = NMS.getField(EntityTrackerEntry.class, "u");
static {
try {
// Old paper versions override the tracked player set to be a map
if (EntityTrackerEntry.class.getField("trackedPlayerMap") != null) {
TRACKING_MAP_SETTER = NMS.getFirstSetter(EntityTrackerEntry.class, Map.class);
TRACKING_MAP_GETTER = NMS.getFirstGetter(EntityTrackerEntry.class, Map.class);
}
} catch (Exception e) {
}
}
}