bajtix

I forgot to do it! Thanks for the help everyone!

If I return the empty LazyOptional, hoppers still can steal items out of it. The same happens if I don't override it.

Could you please explain how do I do that? I have this: @Override public <T> LazyOptional<T> getCapability(@Nonnull Capability<T> cap, @Nonnull Direction side) { if(cap == CapabilityItemHandler.ITEM_HANDLER_CAPABILITY) { return itemHandler.cast(); } return super.getCapability(cap, side); } private IItemHandlerModifiable createHandler() { return new InvWrapper(this); } @Override public void remove() { super.remove(); if(itemHandler != null) { itemHandler.invalidate(); } } What should I do now? I tried to make the getCapability to return null, but it crashed. (I'm sorry, I'm still a begginer)

I know that it has something to do with getCapability function in the container class, but I am not sure what it should return for the hoppers to be unable to access it. I've seen a similar topic for 1.12, but how do I make it work with 1.16?

If I understand correctly, the last parameter of the registerMessage() function is the method that handles the data, right? I'm not sure if I understood the documentation.

Okay, I think It might work now, but I still have no idea when to register them. Should it be done from the main mod class or is there a registry event for that? also, how do I make it actually handle it? I may be not experienced enough to understand it, but I don't think that just putting a "handle()" method will work.

INSTANCE.registerMessage(0, CSendNBTPacket.class ,CSendNBTPacket::encode, CSendNBTPacket::decode, CSendNBTPacket::ctx); public class CSendNBTPacket { public PacketBuffer encode(CSendNBTPacket packet) { return null; } public CSendNBTPacket decode(PacketBuffer buffer) { } public Supplier<NetworkEvent.Context> ctx() { return null; } } What am I doing wrong here? (ignoring the "return null;" part)

So.. how do I exactly handle it? And register it? I don't understand the docs, especially the "Registering Packets". I understand that the packet class should have functions for encoding and decoding the packets, but I don't really know how they should work.

I saw how it is made for the CommandBlockScreen, but I am not sure how to handle these packets. Also, the button just sends a TextField to the server, and it is checked again there - I just need to send two integers. I tried implementing it with SimpleChannels, but I saw that Minecraft uses a custom packet.

I am trying to send a NBT update to the client when a GUI button is clicked. I tried just setting the value, but it looks like it is only set for the client TileEntity, and not the server one. How can I send the value to the server? I've seen that Minecraft uses a custom packet for that, but I have no idea how to use them, and I don't understand the documetion.

Thank you! I somehow overlooked that in my code and spent a few hours searching for the solution.

I'm posting this in a different thread, because it is a little different then just creating a recipe. So I managed to make my custom recipe work, but it only works for singleplayer. When I try to join a server, the client throws Internal Exception: io.netty.handler.codec.EncoderException: java.lang.NullPointerException I am registering the recipe here: @SubscribeEvent public static void onRecipeRegistry(final RegistryEvent.Register<IRecipeSerializer<?>> recipeRegistryEvent) { LOGGER.info("Recipe registry!"); SpecialRecipeSerializer<MusicCloningRecipe> musicCloningRecipe = (SpecialRecipeSerializer<MusicCloningRecipe>) new SpecialRecipeSerializer<>(MusicCloningRecipe::new).setRegistryName("crafting_special_musiccloning"); recipeRegistryEvent.getRegistry().register( musicCloningRecipe ); } And it is kept here: @ObjectHolder("musicblock") class Recipes { public static final SpecialRecipeSerializer<MusicCloningRecipe> CRAFTING_SPECIAL_MUSICCLONING = null; } The recipe code: package xyz.bajtix.musicblock; import net.minecraft.inventory.CraftingInventory; import net.minecraft.item.ItemStack; import net.minecraft.item.Items; import net.minecraft.item.WrittenBookItem; import net.minecraft.item.crafting.IRecipeSerializer; import net.minecraft.item.crafting.SpecialRecipe; import net.minecraft.nbt.CompoundNBT; import net.minecraft.util.NonNullList; import net.minecraft.util.ResourceLocation; import net.minecraft.world.World; public class MusicCloningRecipe extends SpecialRecipe { public MusicCloningRecipe(ResourceLocation idIn) { super(idIn); } public boolean matches(CraftingInventory inv, World worldIn) { int i = 0; boolean oneHasData = false; for(int j = 0; j < inv.getSizeInventory(); ++j) { if(inv.getStackInSlot(j).getItem() == ItemList.musicBlock) { i++; if(inv.getStackInSlot(j).hasTag() && inv.getStackInSlot(j).getTag().contains("music")) oneHasData = !oneHasData; } } return i == 2 && oneHasData; } /** * Returns an Item that is the result of this recipe * * @param inv */ @Override public ItemStack getCraftingResult(CraftingInventory inv) { int i = 0; CompoundNBT data = null; for(int j = 0; j < inv.getSizeInventory(); ++j) { if(inv.getStackInSlot(j).getItem() == ItemList.musicBlock) { i++; if(inv.getStackInSlot(j).hasTag() && inv.getStackInSlot(j).getTag().contains("music")) data = inv.getStackInSlot(j).getTag(); } } if(data == null) return null; ItemStack stack = new ItemStack(ItemList.musicBlock,1,data); stack.setTag(data); return stack; } @Override public NonNullList<ItemStack> getRemainingItems(CraftingInventory inv) { NonNullList<ItemStack> itemlist = NonNullList.withSize(inv.getSizeInventory(), ItemStack.EMPTY); for(int i = 0; i < itemlist.size(); ++i) { ItemStack itemstack = inv.getStackInSlot(i); if (itemstack.hasContainerItem()) { itemlist.set(i, itemstack.getContainerItem()); } else if (itemstack.getItem() == ItemList.musicBlock) { ItemStack itemstack1 = itemstack.copy(); itemstack1.setCount(1); itemlist.set(i, itemstack1); break; } } return itemlist; } /** * Used to determine if this recipe can fit in a grid of the given width/height * * @param width * @param height */ @Override public boolean canFit(int width, int height) { return width >= 2 && height >= 2; } @Override public IRecipeSerializer<?> getSerializer() { return null; } } And it is registered in an @OjectHolder class Could someone please tell me what am I doing wrong? I couldn't really find a good documentation for it.

So I managed to make it work, but it only works for singleplayer. When I try to join a server, the client throws Internal Exception: io.netty.handler.codec.EncoderException: java.lang.NullPointerException I am registering the recipe here: @SubscribeEvent public static void onRecipeRegistry(final RegistryEvent.Register<IRecipeSerializer<?>> recipeRegistryEvent) { LOGGER.info("Recipe registry!"); SpecialRecipeSerializer<MusicCloningRecipe> musicCloningRecipe = (SpecialRecipeSerializer<MusicCloningRecipe>) new SpecialRecipeSerializer<>(MusicCloningRecipe::new).setRegistryName("crafting_special_musiccloning"); recipeRegistryEvent.getRegistry().register( musicCloningRecipe ); } And it is kept here: @ObjectHolder("musicblock") class Recipes { public static final SpecialRecipeSerializer<MusicCloningRecipe> CRAFTING_SPECIAL_MUSICCLONING = null; } Could someone please tell me what am I doing wrong? I couldn't really find a good documentation for it.

I managed to resolve the issue now, with the debugger. The problem was that altough the method PlayerEntity#sendMessage with null as the sender ID works just fine on singleplayer server, but when run on a remote server throws an exception. The solution that worked was just giving the player's UUID as the senderID. Thanks for the help!

After rebooting my PC and reinstalling gradle it finally worked, so maybe it was some problem with an application already using the port? I have no idea, but now the server runs. I was also able to use the debugger; The function runs and the player is not null, everything looks like it should work but the chat message still isn't sent.

The client runs, the server doesn't.

But basically the same thing happens when using the run configuration. The only difference is that it prints Disconnected from the target VM, address: '127.0.0.1:53952', transport: 'socket' at the end. I am tried reinstalling gradle, but it is still the same.

This is the log afer running the runServer configuration with --debug and --stacktrace I tried uploading it here, but it threw an error and pastebin didn't work either, so I put it here https://filebin.net/m6dldvc1g31tfukx/gradleLog.txt?t=ufc9r7pm

If I am understanding it correctly, the IDE still needs to run gradle to compile it and run the server. I used genIntellijRuns and I am using the runServer, but it always throws this error. The client works just fine.

I'm trying to run the debugger on the server, but for some reason the gradlew runServer fails. It throws the error: 22:55:00.259 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Exception is: 22:55:00.259 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] org.gradle.launcher.daemon.client.DaemonConnectionException: Could not dispatch a message to the daemon. 22:55:00.259 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.client.DaemonClientConnection.dispatch(DaemonClientConnection.java:68) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.client.DaemonClientConnection.dispatch(DaemonClientConnection.java:35) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.client.DaemonClientInputForwarder$ForwardTextStreamToConnection.endOfStream(DaemonClientInputForwarder.java:78) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.client.InputForwarder$1.run(InputForwarder.java:95) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at java.lang.Thread.run(Thread.java:748) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Caused by: org.gradle.internal.remote.internal.MessageIOException: Could not write '/127.0.0.1:49937'. 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.remote.internal.inet.SocketConnection.flush(SocketConnection.java:135) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.client.DaemonClientConnection.dispatch(DaemonClientConnection.java:59) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] ... 9 more 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Caused by: java.io.IOException: Istniej╣ce po│╣czenie zosta│o gwa│townie zamkniŕte przez zdalnego hosta //this translates to: an existing connection was forcibly closed by the remote host 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sun.nio.ch.SocketDispatcher.write0(Native Method) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sun.nio.ch.IOUtil.write(IOUtil.java:51) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.remote.internal.inet.SocketConnection$SocketOutputStream.writeWithNonBlockingRetry(SocketConnection.java:273) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.remote.internal.inet.SocketConnection$SocketOutputStream.writeBufferToChannel(SocketConnection.java:261) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.remote.internal.inet.SocketConnection$SocketOutputStream.flush(SocketConnection.java:255) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.remote.internal.inet.SocketConnection.flush(SocketConnection.java:133) 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] ... 10 more 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 22:55:00.260 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Get more help at https://help.gradle.org

Im pretty sure it is, as all the other things in that function work just fine.

Here it is. I'm pretty sure it is terrible, I am still working on it. Also, I have no idea how the client-server sync code works and I still can't understand it. package xyz.bajtix.musicblock; import net.minecraft.block.BlockState; import net.minecraft.entity.player.PlayerEntity; import net.minecraft.nbt.CompoundNBT; import net.minecraft.nbt.INBT; import net.minecraft.nbt.ListNBT; import net.minecraft.network.NetworkManager; import net.minecraft.network.play.server.SUpdateTileEntityPacket; import net.minecraft.particles.IParticleData; import net.minecraft.particles.ParticleTypes; import net.minecraft.state.properties.NoteBlockInstrument; import net.minecraft.tileentity.ITickableTileEntity; import net.minecraft.tileentity.TileEntity; import net.minecraft.util.SoundCategory; import net.minecraft.util.math.BlockPos; import net.minecraft.util.text.StringTextComponent; import net.minecraft.util.text.TranslationTextComponent; import net.minecraftforge.common.util.INBTSerializable; import javax.annotation.Nullable; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; public class MusicBlockTileEntity extends TileEntity implements ITickableTileEntity { public MusicBlockTileEntity() { super(TEList.MUSIC_BLOCK); if(recorded == null) recorded = new HashMap<Integer, ArrayList<Note>>(); } public class Note implements INBTSerializable { public float frequency; public NoteBlockInstrument instrument; public Note(float frequency, NoteBlockInstrument instrument) { this.frequency = frequency; this.instrument = instrument; } @Override public CompoundNBT serializeNBT() { CompoundNBT nbt = new CompoundNBT(); nbt.putFloat("f",frequency); nbt.putString("i",instrument.name()); return nbt; } @Override public void deserializeNBT(INBT nbt) { CompoundNBT bnbt = (CompoundNBT)nbt; frequency = bnbt.getFloat("f"); String iname = bnbt.getString("i"); instrument = NoteBlockInstrument.valueOf(iname); } } private Map<Integer, ArrayList<Note>> recorded; private int tick = 0; private PlayerEntity lastPlayerRecord; private int state = 2; // Play = 0; Record = 1; Idle = 2 /** * Song volume (pretty sure it can be max. 3) */ public float volume = 3; /** * Song author */ public String author = "anonymous"; /** * Song name (defaults to the key specified in lang file as <code>msg.unnamed</code>) */ public String songName = new TranslationTextComponent("msg.unnamed").getString(); /** * Adds a note to the recording, with current tick * @param frequency The pitch of the sound * @param instrument Note Block Instrument to play this note */ public void addNote(float frequency, NoteBlockInstrument instrument) { if(state == 1){ if(!recorded.containsKey(tick)){ ArrayList<Note> notes = new ArrayList<>(); notes.add(new Note(frequency,instrument)); recorded.put(tick, notes); return; } else{ recorded.get(tick).add(new Note(frequency,instrument)); } } } /** * Force adds a note, even if it is not recording, to the given tick * @param frequency The pitch of the sound * @param instrument Note Block Instrument to play this note * @param tick The tick of this note */ public void addNote(float frequency, NoteBlockInstrument instrument, int tick) { if(!recorded.containsKey(tick)){ ArrayList<Note> notes = new ArrayList<>(); notes.add(new Note(frequency,instrument)); recorded.put(tick, notes); return; } else{ recorded.get(tick).add(new Note(frequency,instrument)); } } /** * Clears the recorded song data */ public void clearRecording() { recorded.clear(); } /** * Get the full recording * @return the recording, <code>Map<[Integer]Tick, [Note]Note></code> */ public Map<Integer, ArrayList<Note>> getRecorded() { return recorded; } /** * Set the recorded Map. Please do not use this method, unless you know what you are doing * @param recorded The <code>Map< tick[Integer],note[Note] ></code> */ public void setRecorded(Map<Integer, ArrayList<Note>> recorded) { this.recorded = recorded; } /** * The amount of entries in the recorded music * @return the amount of entries in the dictionary */ public int getNoteAmount() { return recorded.size(); } /** * Get notes at tick * @param tick Tick to get the notes at * @return The note array list */ public ArrayList<Note> getNotes(int tick) { if(recorded.containsKey(tick)) return recorded.get(tick); else return null; } /** * Overwrite notes at a given tick * @param notes The note array to be put * @param tick The tick in which to overwrite */ public void setNotes(ArrayList<Note> notes, int tick) { if(tick > 6000 ) return; recorded.put(tick,notes); } /** * Get the current state * @return the state variable */ public int getState() { return state; } /** * Get the current tick * @return the tick variable */ public int getTick() { return tick; } /** * Sets the current tick * @param s the tick value */ public void setTick(int s) { tick = s; } //TODO: Cleanup this function @Override public void tick() { if(state == 2) return; if(state == 1) { BlockPos chunkPos = world.getChunk(pos).getPos().asBlockPos(); for (int i = 0; i < 48; i++) { world.addParticle(ParticleTypes.FLAME, chunkPos.getX() + i - 16, pos.getY() + .5d, chunkPos.getZ() - 16, 0, 0.5d, 0); } for (int i = 0; i < 48; i++) { world.addParticle(ParticleTypes.FLAME, chunkPos.getX() + i - 16, pos.getY() + .5d, chunkPos.getZ() + 32, 0, 0.5d, 0); } for (int i = 0; i < 48; i++) { world.addParticle(ParticleTypes.FLAME, chunkPos.getX() - 16, pos.getY() + .5d, chunkPos.getZ() + i - 16, 0, 0.5d, 0); } for (int i = 0; i < 48; i++) { world.addParticle(ParticleTypes.FLAME, chunkPos.getX() + 32, pos.getY() + .5d, chunkPos.getZ() + i - 16, 0, 0.5d, 0); } } if(state == 0) { if(recorded.containsKey(tick)) { for(Note n : recorded.get(tick)) { world.playSound((PlayerEntity) null, pos, n.instrument.getSound(), SoundCategory.RECORDS, volume, n.frequency); } } /*if(tick % 60 == 0) world.notifyBlockUpdate(pos,world.getBlockState(pos),world.getBlockState(pos),2);*/ } tick++; if(tick > 6000) { if(state == 0) { state = 2; tick = 0; } else if(state == 1) { record(lastPlayerRecord,null); } } } /** * Toggles playing the recorded audio * @param announce Should it write "Now playing.." message to nearby players? */ public void play(boolean announce) { if(state == 0 || state == 3) { state = 2; tick = 0; } else { state = 0; tick = 0; if(announce) { for (PlayerEntity p : world.getPlayers()) { if (p.getDistanceSq(pos.getX(), pos.getY(), pos.getZ()) < 80) p.sendMessage(new StringTextComponent(new TranslationTextComponent("msg.nowplaying").getString() + " '" + songName + "' " + new TranslationTextComponent("msg.by").getString() + " " + author), null); } } } } /** * * @param playerEntity The player who toggled recording * @param author If player entity is null, this will be the song's author * @return The final state of the musicbox */ public int record(@Nullable PlayerEntity playerEntity,@Nullable String author) { if(playerEntity != null) lastPlayerRecord = playerEntity; if(recorded.size() > 0 && state != 3 && state != 1) { state = 3; if(playerEntity != null) lastPlayerRecord = playerEntity; playerEntity.sendMessage(new TranslationTextComponent("msg.overwrite"),null); return state; } if(state == 1) { if(playerEntity != null) playerEntity.sendMessage(new TranslationTextComponent("msg.recsave"),null); state = 2; world.setBlockState(pos,world.getBlockState(pos).with(MusicBlock.RECORDING,false)); if(playerEntity != null) { lastPlayerRecord = playerEntity; this.author = playerEntity.getDisplayName().getString(); } else { this.author = author; } markDirty(); } else { if(playerEntity != null) playerEntity.sendMessage(new TranslationTextComponent("msg.recstart"), null); recorded.clear(); state = 1; tick = 0; world.setBlockState(pos, world.getBlockState(pos).with(MusicBlock.RECORDING, true)); } return state; } /** * This function returns song data as NBT * @return The song data as ListNBT */ public ListNBT getSongDataNBT() { ListNBT musicData = new ListNBT(); for(Map.Entry k : recorded.entrySet()) { CompoundNBT mtickData = new CompoundNBT(); int tick = (Integer)k.getKey(); mtickData.putInt("tick",tick); ArrayList<Note> notes = (ArrayList<Note>)k.getValue(); ListNBT notesNbt = new ListNBT(); for(Note n : notes) { notesNbt.add(n.serializeNBT()); } mtickData.put("notes",notesNbt); musicData.add(mtickData); } return musicData; } /** * Don't touch, this is used by minecraft to write NBT. Use <code>getSongDataNBT()</code> and the other methods to retrieve the info you want */ @Override public CompoundNBT write(CompoundNBT compound) { compound = super.write(compound); compound.put("noteData", getSongDataNBT()); compound.putString("author",author); compound.putString("name",songName); return compound; } /** * Don't touch, this is used by minecraft to read NBT. Use <code>applyNBTSettings()</code> */ @Override public void read(BlockState state, CompoundNBT nbt) { super.read(state,nbt); this.state = 2; ListNBT musicData = (ListNBT)nbt.get("noteData"); HashMap<Integer,ArrayList<Note>> r = new HashMap<>(); System.out.println("Loading note recording:"); if(musicData == null || musicData.size() < 1) return; for(INBT k : musicData) { int tick = ((CompoundNBT)k).getInt("tick"); ListNBT notesNbt = (ListNBT)((CompoundNBT)k).get("notes"); ArrayList<Note> notes = new ArrayList<>(); if(notesNbt.size() < 1) continue; for(INBT n : notesNbt) { Note note = new Note(0,null); note.deserializeNBT(n); notes.add(note); } r.put(tick,notes); } tick = 0; author = nbt.getString("author"); songName = nbt.getString("name"); this.recorded = r; System.out.println("Finished loading notes, final size:" + recorded.size()); } /** * Imports provided parameters as the current NBT * @param musicData the song data * @param author the author * @param songName the song name */ public void applyNBTSettings(ListNBT musicData, String author, String songName) { HashMap<Integer,ArrayList<Note>> r = new HashMap<>(); System.out.println("Loading note recording:"); this.author = author; if(musicData == null || musicData.size() < 1) return; for(INBT k : musicData) { int tick = ((CompoundNBT)k).getInt("tick"); ListNBT notesNbt = (ListNBT)((CompoundNBT)k).get("notes"); ArrayList<Note> notes = new ArrayList<>(); if(notesNbt.size() < 1) continue; for(INBT n : notesNbt) { Note note = new Note(0,null); note.deserializeNBT(n); notes.add(note); } r.put(tick,notes); } tick = 0; this.recorded = r; this.songName = songName; } @Override public CompoundNBT getUpdateTag() { CompoundNBT nbt = super.getUpdateTag(); if(nbt == null) return null; nbt.putString("author",author); nbt.putString("name",songName); nbt.putInt("state",state); nbt.putInt("tick",tick); nbt.put("noteData",getSongDataNBT()); return nbt; } @Nullable @Override public SUpdateTileEntityPacket getUpdatePacket() { CompoundNBT nbt = super.getUpdateTag(); if(nbt == null) return new SUpdateTileEntityPacket(getPos(),-1,nbt); nbt.putString("author",author); nbt.putString("name",songName); nbt.putInt("state",state); nbt.putInt("tick",tick); nbt.put("noteData",getSongDataNBT()); System.out.println("Sending data : Tick:" + tick + "; State: " + state); return new SUpdateTileEntityPacket(getPos(),-1,nbt); } @Override public void onDataPacket(NetworkManager net, SUpdateTileEntityPacket pkt) { CompoundNBT tag = pkt.getNbtCompound(); if(tag == null) return; if(!tag.contains("author")) return; if(!tag.contains("name")) return; if(!tag.contains("noteData")) return; if(!tag.contains("state")) return; if(!tag.contains("tick")) return; applyNBTSettings((ListNBT) tag.get("noteData"),tag.getString("author"),tag.getString("name")); state = tag.getInt("state"); tick = tag.getInt("tick"); System.out.println("Aquired data from server: Tick:" + tick + "; State: " + state); } @Override public void handleUpdateTag(BlockState bs, CompoundNBT tag) { if(tag == null) return; if(!tag.contains("author")) return; if(!tag.contains("name")) return; if(!tag.contains("noteData")) return; if(!tag.contains("state")) return; if(!tag.contains("tick")) return; applyNBTSettings((ListNBT) tag.get("noteData"),tag.getString("author"),tag.getString("name")); state = tag.getInt("state"); tick = tag.getInt("tick"); } }

I may be doing something wrong, but I am trying to send a chat message to a player from a remote world. Basically, i detect click on a block @Override public ActionResultType onBlockActivated(BlockState state, World worldIn, BlockPos pos, PlayerEntity player, Hand handIn, BlockRayTraceResult hit) { if (worldIn.isRemote) return ActionResultType.SUCCESS; ((MusicBlockTileEntity)worldIn.getTileEntity(pos)).record(player,null); return ActionResultType.SUCCESS; } and then, if the world is remote i call a function on a tile entity. The function contains a code that should send a message to a player. In singleplayer it works, but on a server the message doesn't show up. I'm pretty sure I'm doing something wrong but I don't know what.

Thanks, I'll take a look

I saw a post covering this topic, but it was for 1.12 and I was unable to do something like this in 1.16. I may not be understanding something here, could anyone please explain how should I go about implementing such thing for 1.16?