LibsDisguises/src/me/libraryaddict/disguise/utilities/DisguiseUtilities.java

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package me.libraryaddict.disguise.utilities;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import me.libraryaddict.disguise.LibsDisguises;
import me.libraryaddict.disguise.disguisetypes.Disguise;
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import me.libraryaddict.disguise.disguisetypes.TargettedDisguise;
import me.libraryaddict.disguise.disguisetypes.TargettedDisguise.TargetType;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.potion.PotionEffect;
import org.bukkit.util.Vector;
import com.comphenix.protocol.Packets;
import com.comphenix.protocol.ProtocolLibrary;
import com.comphenix.protocol.ProtocolManager;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.wrappers.WrappedDataWatcher;
public class DisguiseUtilities {
// Store the entity IDs instead of entitys because then I can disguise entitys even before they exist
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private static HashMap<Integer, HashSet<TargettedDisguise>> targetedDisguises = new HashMap<Integer, HashSet<TargettedDisguise>>();
private static LibsDisguises libsDisguises;
// A internal storage of fake entity ID's I can use.
// Realistically I could probably use a ID like "4" for everyone, seeing as no one shares the ID
private static HashMap<Integer, Integer> selfDisguisesIds = new HashMap<Integer, Integer>();
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public static HashMap<Integer, HashSet<TargettedDisguise>> getDisguises() {
return targetedDisguises;
}
public static HashMap<Integer, Integer> getSelfDisguisesIds() {
return selfDisguisesIds;
}
public static void init(LibsDisguises disguises) {
libsDisguises = disguises;
}
public static boolean isDisguiseInUse(Disguise disguise) {
if (getDisguises().containsKey(disguise.getEntity().getEntityId())
&& getDisguises().get(disguise.getEntity().getEntityId()).contains(disguise)) {
return true;
}
return false;
}
/**
* @param Resends
* the entity to all the watching players, which is where the magic begins
*/
public static void refreshTrackers(Entity entity) {
try {
Object world = ReflectionManager.getWorld(entity.getWorld());
Object tracker = world.getClass().getField("tracker").get(world);
Object trackedEntities = tracker.getClass().getField("trackedEntities").get(tracker);
Object entityTrackerEntry = trackedEntities.getClass().getMethod("get", int.class)
.invoke(trackedEntities, entity.getEntityId());
if (entityTrackerEntry != null) {
HashSet trackedPlayers = (HashSet) entityTrackerEntry.getClass().getField("trackedPlayers")
.get(entityTrackerEntry);
Method clear = entityTrackerEntry.getClass().getMethod("clear", ReflectionManager.getNmsClass("EntityPlayer"));
Method updatePlayer = entityTrackerEntry.getClass().getMethod("updatePlayer",
ReflectionManager.getNmsClass("EntityPlayer"));
HashSet cloned = (HashSet) trackedPlayers.clone();
for (Object player : cloned) {
if (entity instanceof Player && !((Player) ReflectionManager.getBukkitEntity(player)).canSee((Player) entity))
continue;
clear.invoke(entityTrackerEntry, player);
updatePlayer.invoke(entityTrackerEntry, player);
}
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
public static void removeSelfDisguise(Player player) {
if (selfDisguisesIds.containsKey(player.getEntityId())) {
// Send a packet to destroy the fake entity
PacketContainer packet = new PacketContainer(Packets.Server.DESTROY_ENTITY);
packet.getModifier().write(0, new int[] { selfDisguisesIds.get(player.getEntityId()) });
try {
ProtocolLibrary.getProtocolManager().sendServerPacket(player, packet);
} catch (Exception ex) {
ex.printStackTrace();
}
// Remove the fake entity ID from the disguise bin
selfDisguisesIds.remove(player.getEntityId());
// Get the entity tracker
try {
Object world = ReflectionManager.getWorld(player.getWorld());
Object tracker = world.getClass().getField("tracker").get(world);
Object trackedEntities = tracker.getClass().getField("trackedEntities").get(tracker);
Object entityTrackerEntry = trackedEntities.getClass().getMethod("get", int.class)
.invoke(trackedEntities, player.getEntityId());
if (entityTrackerEntry != null) {
HashSet trackedPlayers = (HashSet) entityTrackerEntry.getClass().getField("trackedPlayers")
.get(entityTrackerEntry);
// If the tracker exists. Remove himself from his tracker
trackedPlayers.remove(ReflectionManager.getNmsEntity(player));
}
} catch (Exception ex) {
ex.printStackTrace();
}
// Resend entity metadata else he will be invisible to himself until its resent
try {
ProtocolLibrary.getProtocolManager().sendServerPacket(
player,
ProtocolLibrary
.getProtocolManager()
.createPacketConstructor(Packets.Server.ENTITY_METADATA, player.getEntityId(),
WrappedDataWatcher.getEntityWatcher(player), true)
.createPacket(player.getEntityId(), WrappedDataWatcher.getEntityWatcher(player), true));
} catch (Exception ex) {
ex.printStackTrace();
}
player.updateInventory();
}
}
/**
* Sends the self disguise to the player
*/
public static void sendSelfDisguise(final Player player) {
try {
if (!player.isValid()) {
return;
}
Object world = ReflectionManager.getWorld(player.getWorld());
Object tracker = world.getClass().getField("tracker").get(world);
Object trackedEntities = tracker.getClass().getField("trackedEntities").get(tracker);
Object entityTrackerEntry = trackedEntities.getClass().getMethod("get", int.class)
.invoke(trackedEntities, player.getEntityId());
if (entityTrackerEntry == null) {
// A check incase the tracker is null.
// If it is, then this method will be run again in one tick. Which is when it should be constructed.
// Else its going to run in a infinite loop hue hue hue..
Bukkit.getScheduler().scheduleSyncDelayedTask(libsDisguises, new Runnable() {
public void run() {
sendSelfDisguise(player);
}
});
return;
}
// Add himself to his own entity tracker
((HashSet) entityTrackerEntry.getClass().getField("trackedPlayers").get(entityTrackerEntry)).add(ReflectionManager
.getNmsEntity(player));
ProtocolManager manager = ProtocolLibrary.getProtocolManager();
// Send the player a packet with himself being spawned
manager.sendServerPacket(player, manager.createPacketConstructor(Packets.Server.NAMED_ENTITY_SPAWN, player)
.createPacket(player));
manager.sendServerPacket(
player,
manager.createPacketConstructor(Packets.Server.ENTITY_METADATA, player.getEntityId(),
WrappedDataWatcher.getEntityWatcher(player), true).createPacket(player.getEntityId(),
WrappedDataWatcher.getEntityWatcher(player), true));
boolean isMoving = false;
try {
Field field = ReflectionManager.getNmsClass("EntityTrackerEntry").getDeclaredField("isMoving");
field.setAccessible(true);
isMoving = field.getBoolean(entityTrackerEntry);
} catch (Exception ex) {
ex.printStackTrace();
}
// Send the velocity packets
if (isMoving) {
Vector velocity = player.getVelocity();
manager.sendServerPacket(
player,
manager.createPacketConstructor(Packets.Server.ENTITY_VELOCITY, player.getEntityId(), velocity.getX(),
velocity.getY(), velocity.getZ()).createPacket(player.getEntityId(), velocity.getX(),
velocity.getY(), velocity.getZ()));
}
// Why the hell would he even need this. Meh.
if (player.getVehicle() != null && player.getEntityId() > player.getVehicle().getEntityId()) {
manager.sendServerPacket(player,
manager.createPacketConstructor(Packets.Server.ATTACH_ENTITY, 0, player, player.getVehicle())
.createPacket(0, player, player.getVehicle()));
} else if (player.getPassenger() != null && player.getEntityId() > player.getPassenger().getEntityId()) {
manager.sendServerPacket(player,
manager.createPacketConstructor(Packets.Server.ATTACH_ENTITY, 0, player.getPassenger(), player)
.createPacket(0, player.getPassenger(), player));
}
// Resend the armor
for (int i = 0; i < 5; i++) {
ItemStack item;
if (i == 0) {
item = player.getItemInHand();
} else {
item = player.getInventory().getArmorContents()[i - 1];
}
if (item != null && item.getType() != Material.AIR) {
manager.sendServerPacket(player,
manager.createPacketConstructor(Packets.Server.ENTITY_EQUIPMENT, player.getEntityId(), i, item)
.createPacket(player.getEntityId(), i, item));
}
}
Location loc = player.getLocation();
// If the disguised is sleeping for w/e reason
if (player.isSleeping()) {
manager.sendServerPacket(
player,
manager.createPacketConstructor(Packets.Server.ENTITY_LOCATION_ACTION, player, 0, loc.getBlockX(),
loc.getBlockY(), loc.getBlockZ()).createPacket(player, 0, loc.getBlockX(), loc.getBlockY(),
loc.getBlockZ()));
}
// Resend any active potion effects
Iterator iterator = player.getActivePotionEffects().iterator();
while (iterator.hasNext()) {
PotionEffect potionEffect = (PotionEffect) iterator.next();
manager.sendServerPacket(player,
manager.createPacketConstructor(Packets.Server.MOB_EFFECT, player.getEntityId(), potionEffect)
.createPacket(player.getEntityId(), potionEffect));
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
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public static void addDisguise(int entityId, TargettedDisguise disguise) {
if (!getDisguises().containsKey(entityId)) {
getDisguises().put(entityId, new HashSet<TargettedDisguise>());
}
getDisguises().get(entityId).add(disguise);
}
public static boolean removeDisguise(TargettedDisguise disguise) {
int entityId = disguise.getEntity().getEntityId();
if (getDisguises().containsKey(entityId) && getDisguises().get(entityId).remove(disguise)) {
if (getDisguises().get(entityId).isEmpty()) {
getDisguises().remove(entityId);
}
return true;
}
return false;
}
@Deprecated
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public static TargettedDisguise getDisguise(int entityId) {
TargettedDisguise toReturn = null;
if (getDisguises().containsKey(entityId)) {
for (TargettedDisguise disguise : getDisguises().get(entityId)) {
if (disguise.getTargetType() == TargetType.HIDE_FROM_THESE && disguise.getObservers().isEmpty()) {
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return disguise;
}
if (toReturn == null) {
toReturn = disguise;
}
}
}
return toReturn;
}
public static TargettedDisguise[] getDisguises(int entityId) {
if (getDisguises().containsKey(entityId)) {
return getDisguises().get(entityId).toArray(new TargettedDisguise[getDisguises().get(entityId).size()]);
}
return new TargettedDisguise[0];
}
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public static TargettedDisguise getDisguise(Player observer, int entityId) {
if (getDisguises().containsKey(entityId)) {
for (TargettedDisguise disguise : getDisguises().get(entityId)) {
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if (disguise.canSee(observer)) {
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return disguise;
}
}
}
return null;
}
/**
* Setup it so he can see himself when disguised
*/
public static void setupFakeDisguise(final Disguise disguise) {
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Entity e = disguise.getEntity();
// If the disguises entity is null, or the disguised entity isn't a player return
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if (e == null || !(e instanceof Player) || !getDisguises().containsKey(e.getEntityId())
|| !getDisguises().get(e).contains(disguise))
return;
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Player player = (Player) e;
// Remove the old disguise, else we have weird disguises around the place
DisguiseUtilities.removeSelfDisguise(player);
// If the disguised player can't see himself. Return
if (!disguise.isSelfDisguiseVisible() || !PacketsManager.isViewDisguisesListenerEnabled() || player.getVehicle() != null)
return;
try {
// Grab the entity ID the fake disguise will use
Field field = ReflectionManager.getNmsClass("Entity").getDeclaredField("entityCount");
field.setAccessible(true);
int id = field.getInt(null);
// Set the entitycount plus one so we don't have the id being reused
field.set(null, id + 1);
selfDisguisesIds.put(player.getEntityId(), id);
} catch (Exception ex) {
ex.printStackTrace();
}
sendSelfDisguise(player);
if (disguise.isHidingArmorFromSelf() || disguise.isHidingHeldItemFromSelf()) {
if (PacketsManager.isInventoryListenerEnabled()) {
player.updateInventory();
}
}
}
}