feat: lay and spin

[rvbsm]

✍️ Describe the feature you'd like to request

Coming from #10.

GSit has /lay and /spin features, and it will make a fine addition to the mod collection.

💡 Describe the solution you'd like to see

For /lay, GSit tricks the client that a bed exists at y = -63 and spawns a fake player with the EntityPose.SLEEPING pose.

For /spin, as far as I understand it, it sends a rotation packet

ℹ️ Additional information

Creating the fake player

private ServerPlayer createNPC() {

    MinecraftServer minecraftServer = ((CraftServer) Bukkit.getServer()).getServer();

    ServerLevel serverLevel = ((CraftWorld) seat.getLocation().getWorld()).getHandle();

    GameProfile gameProfile = new GameProfile(UUID.randomUUID(), seatPlayer.getName());

    gameProfile.getProperties().putAll(serverPlayer.getGameProfile().getProperties());

    ClientInformation clientInformation = serverPlayer.clientInformation();

    ServerPlayer sPlayer = new ServerPlayer(minecraftServer, serverLevel, gameProfile, clientInformation);

    sPlayer.connection = serverPlayer.connection;

    return sPlayer;
}

Prepare the fake player and register packets

playerNpc = createNPC();
playerNpc.moveTo(seatLocation.getX(), seatLocation.getY() + GPM.getSitManager().BASE_OFFSET + (pose == org.bukkit.entity.Pose.SLEEPING ? 0.1125d : 0d), seatLocation.getZ(), 0f, 0f);

blockLocation = seatLocation.clone();
blockLocation.setY(blockLocation.getWorld().getMinHeight());

bedBlock = blockLocation.getBlock();
bedPos = new BlockPos(blockLocation.getBlockX(), blockLocation.getBlockY(), blockLocation.getBlockZ());

direction = getDirection();

if(pose == org.bukkit.entity.Pose.SLEEPING) setBedPacket = new ClientboundBlockUpdatePacket(bedPos, Blocks.WHITE_BED.defaultBlockState().setValue(BedBlock.FACING, direction.getOpposite()).setValue(BedBlock.PART, BedPart.HEAD));
addNpcInfoPacket = new ClientboundPlayerInfoUpdatePacket(EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.ADD_PLAYER, ClientboundPlayerInfoUpdatePacket.Action.INITIALIZE_CHAT, ClientboundPlayerInfoUpdatePacket.Action.UPDATE_GAME_MODE, ClientboundPlayerInfoUpdatePacket.Action.UPDATE_LATENCY, ClientboundPlayerInfoUpdatePacket.Action.UPDATE_DISPLAY_NAME), Collections.singletonList(playerNpc));
removeNpcInfoPacket = new ClientboundPlayerInfoRemovePacket(Collections.singletonList(playerNpc.getUUID()));
removeNpcPacket = new ClientboundRemoveEntitiesPacket(playerNpc.getId());
createNpcPacket = new ClientboundAddEntityPacket(playerNpc);
if(pose == org.bukkit.entity.Pose.SLEEPING) teleportNpcPacket = new ClientboundTeleportEntityPacket(playerNpc);
if(pose == org.bukkit.entity.Pose.SPIN_ATTACK) rotateNpcPacket = new ClientboundMoveEntityPacket.PosRot(playerNpc.getId(), (short) 0, (short) 0, (short) 0, (byte) 0, getFixedRotation(-90f), true);

Spawning the fake player

public void spawn() {

    nearPlayers = getNearPlayers();

    playerNpc.setGlowingTag(serverPlayer.hasGlowingTag());
    if(serverPlayer.hasGlowingTag()) serverPlayer.setGlowingTag(false);

    playerNpc.getEntityData().set(EntityDataSerializers.POSE.createAccessor(6), net.minecraft.world.entity.Pose.values()[pose.ordinal()]);
    if(pose == Pose.SPIN_ATTACK) playerNpc.getEntityData().set(EntityDataSerializers.BYTE.createAccessor(8), (byte) 4);
    if(pose == Pose.SLEEPING) playerNpc.getEntityData().set(EntityDataSerializers.OPTIONAL_BLOCK_POS.createAccessor(14), Optional.of(bedPos));
    playerNpc.getEntityData().set(EntityDataSerializers.BYTE.createAccessor(17), serverPlayer.getEntityData().get(EntityDataSerializers.BYTE.createAccessor(17)));
    playerNpc.getEntityData().set(EntityDataSerializers.BYTE.createAccessor(18), serverPlayer.getEntityData().get(EntityDataSerializers.BYTE.createAccessor(18)));
    playerNpc.getEntityData().set(EntityDataSerializers.COMPOUND_TAG.createAccessor(19), serverPlayer.getEntityData().get(EntityDataSerializers.COMPOUND_TAG.createAccessor(19)));
    playerNpc.getEntityData().set(EntityDataSerializers.COMPOUND_TAG.createAccessor(20), serverPlayer.getEntityData().get(EntityDataSerializers.COMPOUND_TAG.createAccessor(20)));
    serverPlayer.getEntityData().set(EntityDataSerializers.COMPOUND_TAG.createAccessor(19), new CompoundTag());
    serverPlayer.getEntityData().set(EntityDataSerializers.COMPOUND_TAG.createAccessor(20), new CompoundTag());

    serverPlayer.setInvisible(true);

    setEquipmentVisibility(false);

    if(pose == Pose.SLEEPING) {

        if(GPM.getCManager().P_LAY_NIGHT_SKIP) seatPlayer.setSleepingIgnored(true);

        if(GPM.getCManager().P_LAY_REST) seatPlayer.setStatistic(Statistic.TIME_SINCE_REST, 0);
    }

    metaNpcPacket = new ClientboundSetEntityDataPacket(playerNpc.getId(), playerNpc.getEntityData().isDirty() ? playerNpc.getEntityData().packDirty() : playerNpc.getEntityData().getNonDefaultValues());

    List<Packet<ClientGamePacketListener>> packages = new ArrayList<>();

    packages.add(addNpcInfoPacket);
    packages.add(createNpcPacket);
    if(pose == Pose.SLEEPING) packages.add(setBedPacket);
    packages.add(metaNpcPacket);
    if(pose == Pose.SLEEPING) packages.add(teleportNpcPacket);
    if(pose == Pose.SPIN_ATTACK) packages.add(rotateNpcPacket);

    bundle = new ClientboundBundlePacket(packages);

    for(Player nearPlayer : nearPlayers) spawnToPlayer(nearPlayer);

    Bukkit.getPluginManager().registerEvents(listener, GPM);

    ((SeatEntity) ((CraftEntity) seat.getSeatEntity()).getHandle()).setCallback(() -> {

        List<Player> playerList = getNearPlayers();

        for(Player nearPlayer : playerList) {

            if(nearPlayers.contains(nearPlayer)) continue;

            nearPlayers.add(nearPlayer);

            spawnToPlayer(nearPlayer);
        }

        for(Player nearPlayer : new ArrayList<>(nearPlayers)) {

            if(playerList.contains(nearPlayer)) continue;

            nearPlayers.remove(nearPlayer);

            removeToPlayer(nearPlayer);
        }

        if(pose != Pose.SPIN_ATTACK) updateDirection();

        serverPlayer.setInvisible(true);

        updateEquipment();

        setEquipmentVisibility(false);

        updateSkin();

        if(pose != Pose.SLEEPING || !GPM.getCManager().P_LAY_SNORING_SOUNDS) return;

        long tick = serverPlayer.getPlayerTime();

        if((!GPM.getCManager().P_LAY_SNORING_NIGHT_ONLY || (tick >= 12500 && tick <= 23500)) && tick % 90 == 0) {

            for(Player nearPlayer : nearPlayers) nearPlayer.playSound(seat.getLocation(), Sound.ENTITY_FOX_SLEEP, SoundCategory.PLAYERS, 1.5f, 0);
        }
    });
}

👨‍👧‍👦 Contributing

• 🙋‍♂️ Yes, I'd be down to file a PR implementing this feature!