/
PacketHelperImpl.java
426 lines (378 loc) · 20.5 KB
/
PacketHelperImpl.java
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package com.denizenscript.denizen.nms.v1_16.helpers;
import com.denizenscript.denizen.nms.NMSHandler;
import com.denizenscript.denizen.nms.v1_16.impl.SidebarImpl;
import com.denizenscript.denizen.nms.v1_16.impl.network.handlers.DenizenNetworkManagerImpl;
import com.denizenscript.denizen.objects.LocationTag;
import com.denizenscript.denizen.objects.MaterialTag;
import com.denizenscript.denizen.objects.PlayerTag;
import com.denizenscript.denizen.utilities.Utilities;
import com.denizenscript.denizen.utilities.blocks.FakeBlock;
import com.denizenscript.denizen.utilities.maps.MapImage;
import com.denizenscript.denizencore.objects.core.DurationTag;
import com.denizenscript.denizencore.utilities.ReflectionHelper;
import com.denizenscript.denizen.nms.v1_16.Handler;
import com.denizenscript.denizen.nms.v1_16.impl.jnbt.CompoundTagImpl;
import com.denizenscript.denizen.nms.interfaces.PacketHelper;
import com.denizenscript.denizen.nms.util.jnbt.CompoundTag;
import com.denizenscript.denizen.nms.util.jnbt.JNBTListTag;
import com.denizenscript.denizen.utilities.FormattedTextHelper;
import com.denizenscript.denizen.utilities.debugging.Debug;
import com.mojang.datafixers.util.Pair;
import net.md_5.bungee.api.ChatColor;
import net.minecraft.server.v1_17_R1.*;
import org.bukkit.Bukkit;
import org.bukkit.DyeColor;
import org.bukkit.Location;
import org.bukkit.block.banner.Pattern;
import org.bukkit.craftbukkit.v1_17_R1.CraftEquipmentSlot;
import org.bukkit.craftbukkit.v1_17_R1.CraftServer;
import org.bukkit.craftbukkit.v1_17_R1.CraftWorld;
import org.bukkit.craftbukkit.v1_17_R1.entity.CraftEntity;
import org.bukkit.craftbukkit.v1_17_R1.entity.CraftPlayer;
import org.bukkit.craftbukkit.v1_17_R1.inventory.CraftItemStack;
import org.bukkit.craftbukkit.v1_17_R1.map.CraftMapCanvas;
import org.bukkit.craftbukkit.v1_17_R1.map.CraftMapView;
import org.bukkit.entity.Entity;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Player;
import org.bukkit.inventory.EntityEquipment;
import org.bukkit.inventory.EquipmentSlot;
import org.bukkit.inventory.ItemStack;
import org.bukkit.map.MapCanvas;
import org.bukkit.map.MapPalette;
import java.lang.invoke.MethodHandle;
import java.lang.reflect.Field;
import java.util.*;
public class PacketHelperImpl implements PacketHelper {
public static final DataWatcherObject<Float> ENTITY_HUMAN_DATA_WATCHER_ABSORPTION = ReflectionHelper.getFieldValue(EntityHuman.class, "c", null);
public static final DataWatcherObject<Byte> ENTITY_DATA_WATCHER_FLAGS = ReflectionHelper.getFieldValue(net.minecraft.server.v1_17_R1.Entity.class, "S", null);
public static final MethodHandle ABILITIES_PACKET_FOV_SETTER = ReflectionHelper.getFinalSetter(PacketPlayOutAbilities.class, "f");
@Override
public void setFakeAbsorption(Player player, float value) {
DataWatcher dw = new DataWatcher(null);
dw.register(ENTITY_HUMAN_DATA_WATCHER_ABSORPTION, value);
sendPacket(player, new PacketPlayOutEntityMetadata(player.getEntityId(), dw, true));
}
@Override
public void resetWorldBorder(Player player) {
WorldBorder wb = ((CraftWorld) player.getWorld()).getHandle().getWorldBorder();
sendPacket(player, new PacketPlayOutWorldBorder(wb, PacketPlayOutWorldBorder.EnumWorldBorderAction.INITIALIZE));
}
@Override
public void setWorldBorder(Player player, Location center, double size, double currSize, long time, int warningDistance, int warningTime) {
WorldBorder wb = new WorldBorder();
wb.world = ((CraftWorld) player.getWorld()).getHandle();
wb.setCenter(center.getX(), center.getZ());
wb.setWarningDistance(warningDistance);
wb.setWarningTime(warningTime);
if (time > 0) {
wb.transitionSizeBetween(currSize, size, time);
}
else {
wb.setSize(size);
}
sendPacket(player, new PacketPlayOutWorldBorder(wb, PacketPlayOutWorldBorder.EnumWorldBorderAction.INITIALIZE));
}
@Override
public void setSlot(Player player, int slot, ItemStack itemStack, boolean playerOnly) {
int windowId = playerOnly ? 0 : ((CraftPlayer) player).getHandle().activeContainer.windowId;
sendPacket(player, new PacketPlayOutSetSlot(windowId, slot, CraftItemStack.asNMSCopy(itemStack)));
}
@Override
public void setFieldOfView(Player player, float fov) {
PacketPlayOutAbilities packet = new PacketPlayOutAbilities(((CraftPlayer) player).getHandle().abilities);
if (!Float.isNaN(fov)) {
try {
ABILITIES_PACKET_FOV_SETTER.invoke(packet, fov);
}
catch (Throwable ex) {
Debug.echoError(ex);
}
}
sendPacket(player, packet);
}
@Override
public void respawn(Player player) {
((CraftPlayer) player).getHandle().playerConnection.a(
new PacketPlayInClientCommand(PacketPlayInClientCommand.EnumClientCommand.PERFORM_RESPAWN));
}
@Override
public void setVision(Player player, EntityType entityType) {
final EntityLiving entity;
if (entityType == EntityType.CREEPER) {
entity = new EntityCreeper(EntityTypes.CREEPER, ((CraftWorld) player.getWorld()).getHandle());
}
else if (entityType == EntityType.SPIDER) {
entity = new EntitySpider(EntityTypes.SPIDER, ((CraftWorld) player.getWorld()).getHandle());
}
else if (entityType == EntityType.CAVE_SPIDER) {
entity = new EntityCaveSpider(EntityTypes.CAVE_SPIDER, ((CraftWorld) player.getWorld()).getHandle());
}
else if (entityType == EntityType.ENDERMAN) {
entity = new EntityEnderman(EntityTypes.ENDERMAN, ((CraftWorld) player.getWorld()).getHandle());
}
else {
return;
}
// Spectating an entity then immediately respawning the player prevents a client shader update,
// allowing the player to retain whatever vision the mob they spectated had.
sendPacket(player, new PacketPlayOutSpawnEntityLiving(entity));
sendPacket(player, new PacketPlayOutCamera(entity));
((CraftServer) Bukkit.getServer()).getHandle().moveToWorld(((CraftPlayer) player).getHandle(),
((CraftWorld) player.getWorld()).getHandle(), true, player.getLocation(), false);
}
@Override
public void showDemoScreen(Player player) {
sendPacket(player, new PacketPlayOutGameStateChange(PacketPlayOutGameStateChange.f, 0f));
}
@Override
public void showBlockAction(Player player, Location location, int action, int state) {
BlockPosition position = new BlockPosition(location.getX(), location.getY(), location.getZ());
Block block = ((CraftWorld) location.getWorld()).getHandle().getType(position).getBlock();
sendPacket(player, new PacketPlayOutBlockAction(position, block, action, state));
}
@Override
public void showBlockCrack(Player player, int id, Location location, int progress) {
BlockPosition position = new BlockPosition(location.getX(), location.getY(), location.getZ());
sendPacket(player, new PacketPlayOutBlockBreakAnimation(id, position, progress));
}
@Override
public void showTileEntityData(Player player, Location location, int action, CompoundTag compoundTag) {
BlockPosition position = new BlockPosition(location.getX(), location.getY(), location.getZ());
sendPacket(player, new PacketPlayOutTileEntityData(position, action, ((CompoundTagImpl) compoundTag).toNMSTag()));
}
@Override
public void showBannerUpdate(Player player, Location location, DyeColor base, List<Pattern> patterns) {
List<CompoundTag> nbtPatterns = new ArrayList<>();
for (Pattern pattern : patterns) {
nbtPatterns.add(NMSHandler.getInstance()
.createCompoundTag(new HashMap<>())
.createBuilder()
.putInt("Color", pattern.getColor().getDyeData())
.putString("Pattern", pattern.getPattern().getIdentifier())
.build());
}
CompoundTag compoundTag = NMSHandler.getBlockHelper().getNbtData(location.getBlock())
.createBuilder()
.put("Patterns", new JNBTListTag(CompoundTag.class, nbtPatterns))
.build();
showTileEntityData(player, location, 3, compoundTag);
}
@Override
public void showTabListHeaderFooter(Player player, String header, String footer) {
PacketPlayOutPlayerListHeaderFooter packet = new PacketPlayOutPlayerListHeaderFooter();
packet.header = Handler.componentToNMS(FormattedTextHelper.parse(header, ChatColor.WHITE));
packet.footer = Handler.componentToNMS(FormattedTextHelper.parse(footer, ChatColor.WHITE));
sendPacket(player, packet);
}
@Override
public void resetTabListHeaderFooter(Player player) {
showTabListHeaderFooter(player, "", "");
}
@Override
public void showTitle(Player player, String title, String subtitle, int fadeInTicks, int stayTicks, int fadeOutTicks) {
sendPacket(player, new PacketPlayOutTitle(fadeInTicks, stayTicks, fadeOutTicks));
if (title != null) {
sendPacket(player, new PacketPlayOutTitle(PacketPlayOutTitle.EnumTitleAction.TITLE, Handler.componentToNMS(FormattedTextHelper.parse(title, ChatColor.WHITE))));
}
if (subtitle != null) {
sendPacket(player, new PacketPlayOutTitle(PacketPlayOutTitle.EnumTitleAction.SUBTITLE, Handler.componentToNMS(FormattedTextHelper.parse(subtitle, ChatColor.WHITE))));
}
}
@Override
public void showEquipment(Player player, LivingEntity entity, EquipmentSlot equipmentSlot, ItemStack itemStack) {
Pair<EnumItemSlot, net.minecraft.server.v1_17_R1.ItemStack> pair = new Pair<>(CraftEquipmentSlot.getNMS(equipmentSlot), CraftItemStack.asNMSCopy(itemStack));
ArrayList<Pair<EnumItemSlot, net.minecraft.server.v1_17_R1.ItemStack>> pairList = new ArrayList<>();
pairList.add(pair);
sendPacket(player, new PacketPlayOutEntityEquipment(entity.getEntityId(), pairList));
}
@Override
public void resetEquipment(Player player, LivingEntity entity) {
EntityEquipment equipment = entity.getEquipment();
ArrayList<Pair<EnumItemSlot, net.minecraft.server.v1_17_R1.ItemStack>> pairList = new ArrayList<>();
pairList.add(new Pair<>(EnumItemSlot.MAINHAND, CraftItemStack.asNMSCopy(equipment.getItemInMainHand())));
pairList.add(new Pair<>(EnumItemSlot.OFFHAND, CraftItemStack.asNMSCopy(equipment.getItemInOffHand())));
pairList.add(new Pair<>(EnumItemSlot.HEAD, CraftItemStack.asNMSCopy(equipment.getHelmet())));
pairList.add(new Pair<>(EnumItemSlot.CHEST, CraftItemStack.asNMSCopy(equipment.getChestplate())));
pairList.add(new Pair<>(EnumItemSlot.LEGS, CraftItemStack.asNMSCopy(equipment.getLeggings())));
pairList.add(new Pair<>(EnumItemSlot.FEET, CraftItemStack.asNMSCopy(equipment.getBoots())));
sendPacket(player, new PacketPlayOutEntityEquipment(entity.getEntityId(), pairList));
}
@Override
public void openBook(Player player, EquipmentSlot hand) {
sendPacket(player, new PacketPlayOutOpenBook(hand == EquipmentSlot.OFF_HAND ? EnumHand.OFF_HAND : EnumHand.MAIN_HAND));
}
@Override
public void showHealth(Player player, float health, int food, float saturation) {
sendPacket(player, new PacketPlayOutUpdateHealth(health, food, saturation));
}
@Override
public void resetHealth(Player player) {
showHealth(player, (float) player.getHealth(), player.getFoodLevel(), player.getSaturation());
}
@Override
public void showExperience(Player player, float experience, int level) {
sendPacket(player, new PacketPlayOutExperience(experience, 0, level));
}
@Override
public void resetExperience(Player player) {
showExperience(player, player.getExp(), player.getLevel());
}
@Override
public boolean showSignEditor(Player player, Location location) {
if (location == null) {
LocationTag fakeSign = new LocationTag(player.getLocation());
fakeSign.setY(0);
FakeBlock.showFakeBlockTo(Collections.singletonList(new PlayerTag(player)), fakeSign, new MaterialTag(org.bukkit.Material.OAK_WALL_SIGN), new DurationTag(1));
BlockPosition pos = new BlockPosition(fakeSign.getX(), 0, fakeSign.getZ());
((DenizenNetworkManagerImpl) ((CraftPlayer) player).getHandle().playerConnection.networkManager).packetListener.fakeSignExpected = pos;
sendPacket(player, new PacketPlayOutOpenSignEditor(pos));
return true;
}
TileEntity tileEntity = ((CraftWorld) location.getWorld()).getHandle().getTileEntity(new BlockPosition(location.getBlockX(),
location.getBlockY(), location.getBlockZ()));
if (tileEntity instanceof TileEntitySign) {
TileEntitySign sign = (TileEntitySign) tileEntity;
// Prevent client crashing by sending current state of the sign
sendPacket(player, sign.getUpdatePacket());
sign.isEditable = true;
sign.a((EntityHuman) ((CraftPlayer) player).getHandle());
sendPacket(player, new PacketPlayOutOpenSignEditor(sign.getPosition()));
return true;
}
else {
return false;
}
}
@Override
public void forceSpectate(Player player, Entity entity) {
sendPacket(player, new PacketPlayOutCamera(((CraftEntity) entity).getHandle()));
}
public static MethodHandle ENTITY_METADATA_EID_SETTER = ReflectionHelper.getFinalSetter(PacketPlayOutEntityMetadata.class, "a");
public static MethodHandle ENTITY_METADATA_LIST_SETTER = ReflectionHelper.getFinalSetter(PacketPlayOutEntityMetadata.class, "b");
public static DataWatcherObject<Optional<IChatBaseComponent>> ENTITY_CUSTOM_NAME_METADATA;
public static DataWatcherObject<Boolean> ENTITY_CUSTOM_NAME_VISIBLE_METADATA;
static {
try {
ENTITY_CUSTOM_NAME_METADATA = ReflectionHelper.getFieldValue(net.minecraft.server.v1_17_R1.Entity.class, "aq", null);
ENTITY_CUSTOM_NAME_VISIBLE_METADATA = ReflectionHelper.getFieldValue(net.minecraft.server.v1_17_R1.Entity.class, "ar", null);
}
catch (Throwable ex) {
ex.printStackTrace();
}
}
public static Field ENTITY_TRACKER_ENTRY_GETTER = ReflectionHelper.getFields(PlayerChunkMap.EntityTracker.class).get("trackerEntry");
@Override
public void sendRename(Player player, Entity entity, String name, boolean listMode) {
try {
if (entity.getType() == EntityType.PLAYER) {
if (listMode) {
sendPacket(player, new PacketPlayOutPlayerInfo(PacketPlayOutPlayerInfo.EnumPlayerInfoAction.UPDATE_DISPLAY_NAME, ((CraftPlayer) player).getHandle()));
}
else {
// For player entities, force a respawn packet and let the dynamic intercept correct the details
PlayerChunkMap tracker = ((WorldServer) ((CraftEntity) entity).getHandle().world).getChunkProvider().playerChunkMap;
PlayerChunkMap.EntityTracker entityTracker = tracker.trackedEntities.get(entity.getEntityId());
if (entityTracker != null) {
try {
EntityTrackerEntry entry = (EntityTrackerEntry) ENTITY_TRACKER_ENTRY_GETTER.get(entityTracker);
if (entry != null) {
entry.a(((CraftPlayer) player).getHandle());
entry.b(((CraftPlayer) player).getHandle());
}
}
catch (Throwable ex) {
Debug.echoError(ex);
}
}
}
return;
}
PacketPlayOutEntityMetadata packet = new PacketPlayOutEntityMetadata();
ENTITY_METADATA_EID_SETTER.invoke(packet, entity.getEntityId());
List<DataWatcher.Item<?>> list = new ArrayList<>();
list.add(new DataWatcher.Item<>(ENTITY_CUSTOM_NAME_METADATA, Optional.of(Handler.componentToNMS(FormattedTextHelper.parse(name, ChatColor.WHITE)))));
list.add(new DataWatcher.Item<>(ENTITY_CUSTOM_NAME_VISIBLE_METADATA, true));
ENTITY_METADATA_LIST_SETTER.invoke(packet, list);
sendPacket(player, packet);
}
catch (Throwable ex) {
Debug.echoError(ex);
}
}
public static HashMap<UUID, HashMap<UUID, ScoreboardTeam>> noCollideTeamMap = new HashMap<>();
@Override
public void generateNoCollideTeam(Player player, UUID noCollide) {
removeNoCollideTeam(player, noCollide);
ScoreboardTeam team = new ScoreboardTeam(SidebarImpl.dummyScoreboard, Utilities.generateRandomColors(8));
team.getPlayerNameSet().add(noCollide.toString());
team.setCollisionRule(ScoreboardTeamBase.EnumTeamPush.NEVER);
HashMap<UUID, ScoreboardTeam> map = noCollideTeamMap.computeIfAbsent(player.getUniqueId(), k -> new HashMap<>());
map.put(noCollide, team);
sendPacket(player, new PacketPlayOutScoreboardTeam(team, 0));
}
@Override
public void removeNoCollideTeam(Player player, UUID noCollide) {
if (noCollide == null || !player.isOnline()) {
noCollideTeamMap.remove(player.getUniqueId());
return;
}
HashMap<UUID, ScoreboardTeam> map = noCollideTeamMap.get(player.getUniqueId());
if (map == null) {
return;
}
ScoreboardTeam team = map.remove(noCollide);
if (team != null) {
sendPacket(player, new PacketPlayOutScoreboardTeam(team, 1));
}
if (map.isEmpty()) {
noCollideTeamMap.remove(player.getUniqueId());
}
}
@Override
public void sendEntityMetadataFlagsUpdate(Player player, Entity entity) {
DataWatcher dw = new DataWatcher(null);
dw.register(ENTITY_DATA_WATCHER_FLAGS, ((CraftEntity) entity).getHandle().getDataWatcher().get(ENTITY_DATA_WATCHER_FLAGS));
sendPacket(player, new PacketPlayOutEntityMetadata(entity.getEntityId(), dw, true));
}
@Override
public void sendEntityEffect(Player player, Entity entity, byte effectId) {
sendPacket(player, new PacketPlayOutEntityStatus(((CraftEntity) entity).getHandle(), effectId));
}
@Override
public int getPacketStats(Player player, boolean sent) {
DenizenNetworkManagerImpl netMan = (DenizenNetworkManagerImpl) ((CraftPlayer) player).getHandle().playerConnection.networkManager;
return sent ? netMan.packetsSent : netMan.packetsReceived;
}
public static MethodHandle CANVAS_GET_BUFFER = ReflectionHelper.getMethodHandle(CraftMapCanvas.class, "getBuffer");
public static Field MAPVIEW_WORLDMAP = ReflectionHelper.getFields(CraftMapView.class).get("worldMap");
@Override
public void setMapData(MapCanvas canvas, byte[] bytes, int x, int y, MapImage image) {
if (x > 127 || y > 127) {
return;
}
try {
int width = Math.min(image.width, 128 - x), height = Math.min(image.height, 128 - y);
byte[] buffer = (byte[]) CANVAS_GET_BUFFER.invoke(canvas);
for (int x2 = x < 0 ? -x : 0; x2 < width; ++x2) {
for (int y2 = y < 0 ? -y : 0; y2 < height; ++y2) {
byte p = bytes[y2 * image.width + x2];
if (p != MapPalette.TRANSPARENT) {
buffer[(y2 + y) * 128 + (x2 + x)] = p;
}
}
}
// Flag the whole image as dirty
WorldMap map = (WorldMap) MAPVIEW_WORLDMAP.get(canvas.getMapView());
map.flagDirty(Math.max(x, 0), Math.max(y, 0));
map.flagDirty(width + x - 1, height + y - 1);
}
catch (Throwable ex) {
Debug.echoError(ex);
}
}
public static void sendPacket(Player player, Packet packet) {
((CraftPlayer) player).getHandle().playerConnection.sendPacket(packet);
}
}