net.minecraft.entity.EntityTracker Java Examples

private void showPlayer0(@Nullable Plugin plugin, Player player) {
    Validate.notNull(player, "shown player cannot be null");
    if (getHandle().connection == null) return;
    if (equals(player)) return;

    Set<WeakReference<Plugin>> hidingPlugins = hiddenPlayers.get(player.getUniqueId());
    if (hidingPlugins == null) {
        return; // Player isn't hidden
    }
    hidingPlugins.remove(getPluginWeakReference(plugin));
    if (!hidingPlugins.isEmpty()) {
        return; // Some other plugins still want the player hidden
    }
    hiddenPlayers.remove(player.getUniqueId());

    EntityTracker tracker = ((WorldServer) entity.world).entityTracker;
    EntityPlayerMP other = ((CraftPlayer) player).getHandle();

    getHandle().connection.sendPacket(new SPacketPlayerListItem(SPacketPlayerListItem.Action.ADD_PLAYER, other));

    EntityTrackerEntry entry = tracker.trackedEntityHashTable.lookup(other.getEntityId());
    if (entry != null && !entry.trackingPlayers.contains(getHandle())) {
        entry.updatePlayerEntity(getHandle());
    }
}
 

public void hidePlayer(Player player) {
    Validate.notNull(player, "hidden player cannot be null");
    if (getHandle().playerNetServerHandler == null) return;
    if (equals(player)) return;
    if (hiddenPlayers.contains(player.getUniqueId())) return;
    hiddenPlayers.add(player.getUniqueId());

    //remove this player from the hidden player's EntityTrackerEntry
    net.minecraft.entity.EntityTracker tracker = ((net.minecraft.world.WorldServer) entity.worldObj).theEntityTracker;
    net.minecraft.entity.player.EntityPlayerMP other = ((CraftPlayer) player).getHandle();
    net.minecraft.entity.EntityTrackerEntry entry = (net.minecraft.entity.EntityTrackerEntry) tracker.trackedEntityIDs.lookup(other.getEntityId());
    if (entry != null) {
        entry.removePlayerFromTracker(getHandle());
    }

    //remove the hidden player from this player user list
    getHandle().playerNetServerHandler.sendPacket(new net.minecraft.network.play.server.S38PacketPlayerListItem(player.getPlayerListName(), false, 9999));
}
 

public void showPlayer(Player player) {
    Validate.notNull(player, "shown player cannot be null");
    if (getHandle().playerNetServerHandler == null) return;
    if (equals(player)) return;
    if (!hiddenPlayers.contains(player.getUniqueId())) return;
    hiddenPlayers.remove(player.getUniqueId());

    EntityTracker tracker = ((WorldServer) entity.worldObj).theEntityTracker;
    EntityPlayerMP other = ((CraftPlayer) player).getHandle();
    EntityTrackerEntry entry = (EntityTrackerEntry) tracker.trackedEntityIDs.lookup(other.getEntityId());
    if (entry != null) {
        entry.removePlayerFromTracker(getHandle());
    }

    getHandle().playerNetServerHandler.sendPacket(new S38PacketPlayerListItem(player.getPlayerListName(), false, 9999));
}
 

private void hidePlayer0(@Nullable Plugin plugin, Player player) {
    Validate.notNull(player, "hidden player cannot be null");
    if (getHandle().connection == null) return;
    if (equals(player)) return;

    Set<WeakReference<Plugin>> hidingPlugins = hiddenPlayers.get(player.getUniqueId());
    if (hidingPlugins != null) {
        // Some plugins are already hiding the player. Just mark that this
        // plugin wants the player hidden too and end.
        hidingPlugins.add(getPluginWeakReference(plugin));
        return;
    }
    hidingPlugins = new HashSet<>();
    hidingPlugins.add(getPluginWeakReference(plugin));
    hiddenPlayers.put(player.getUniqueId(), hidingPlugins);

    // Remove this player from the hidden player's EntityTrackerEntry
    EntityTracker tracker = ((WorldServer) entity.world).entityTracker;
    EntityPlayerMP other = ((CraftPlayer) player).getHandle();
    EntityTrackerEntry entry = tracker.trackedEntityHashTable.lookup(other.getEntityId());
    if (entry != null) {
        entry.removeTrackedPlayerSymmetric(getHandle());
    }

    // Remove the hidden player from this player user list, if they're on it
    if (other.sentListPacket) {
        getHandle().connection.sendPacket(new SPacketPlayerListItem(SPacketPlayerListItem.Action.REMOVE_PLAYER, other));
    }
}
 

public static Set<EntityPlayerMP> getPlayersWatchingEntity(WorldServer server, Entity entity) {
	final EntityTracker tracker = server.getEntityTracker();

	@SuppressWarnings("unchecked")
	final Set<? extends EntityPlayerMP> trackingPlayers = (Set<? extends EntityPlayerMP>)tracker.getTrackingPlayers(entity);
	return ImmutableSet.copyOf(trackingPlayers);
}