Hi,

Is it possible to hide those unsightly lines when there is no content? https://prnt.sc/Nj7_R5Gl2_8A

I have a hologram in my head, I can't click on the head, is this fixable? https://prnt.sc/5WRv9FK6WwCS

Best regards.

I Have tried the ExampleHolograms class from the readme, and it shows a error.

Version: 1.8.8

[HologramLib] Task #6 for HologramLib v1.0.0 generated an exception
java.lang.IllegalArgumentException: Registry has no elements!
        at org.apache.commons.lang.Validate.notEmpty(Validate.java:248) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at com.comphenix.protocol.wrappers.WrappedDataWatcher$Registry.get(WrappedDataWatcher.java:966) ~[?:?]
        at com.comphenix.protocol.wrappers.WrappedDataWatcher$Registry.getChatComponentSerializer(WrappedDataWatcher.java:1057) ~[?:?]
        at com.github.unldenis.hologram.line.TextLine.update(TextLine.java:64) ~[?:?]
        at java.util.concurrent.CopyOnWriteArrayList.forEach(CopyOnWriteArrayList.java:895) ~[?:1.8.0_312]
        at java.util.concurrent.CopyOnWriteArraySet.forEach(CopyOnWriteArraySet.java:404) ~[?:1.8.0_312]
        at com.github.unldenis.hologram.Hologram.setLine(Hologram.java:87) ~[?:?]
        at com.github.unldenis.hologram.ExampleHolograms$1.run(ExampleHolograms.java:61) ~[?:?]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:352) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:783) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [patched.jar:git-PaperSpigot-"4c7641d"]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_312]       

Hello, great resource!

Is there any way to add a method in Hologram to choose to hide or show the hologram to all players by default (ex: hologram.setVisibleByDefault(false)) ?

In my case, I want to create a hologram, hide it from all players (and those who will join later) and under certain conditions display it to some players.

Is this kind of functionality implementable?

Thanks :)

Hi, i use the Hologram-Lib version 1.2.1. But its spam a error in console when somebody change the world. HydroGame is the overworld and HydroGame_nether the nether. I don't know why its spamming like this. By the way its only spamming, when a player, no matter who, is in the nether.

I use the Hologram-Lib for my ChestShop system. when a ChestShop is created, it displays the item above the chest that the player is selling. Here is a screen:

Somebody has a idea?

Whenever I attempt to run my sever, my plugin is stopped with the above error. ProtocolLib is added to my plugins folder and added as a dependency for my plugin.

Gradle Build File

plugins {
    id("java")
}

group = "org.example"
version = "1.0-SNAPSHOT"

repositories {
    mavenCentral()
    maven("https://repo.papermc.io/repository/maven-public/")
    maven("https://jitpack.io")
}

dependencies {
    compileOnly("io.papermc.paper:paper-api:1.19.2-R0.1-SNAPSHOT")
    implementation("com.github.unldenis:Hologram-Lib:master-SNAPSHOT")
}

tasks.getByName<Test>("test") {
    useJUnitPlatform()
}

java {
    toolchain.languageVersion.set(JavaLanguageVersion.of(17))
}

I'm using the library on 1.18.2. I was getting the IllegalArgumentException in VersionUtil line 58 (When it was using VersionEnum#valueOf). The string that was being passed through was "v1.18" instead of "V1.18". Fixed this by ensuring that the string is always uppercased. Also fixed VersionEnum 1.19 constant (Changed from "v1.19" to "V1.19" to mimic the rest of the constants)

Changed some methods from protected to public in order to allow to show/hide holograms to certain players OR to get more info about what players are seeing the hologram

With the last commit I implemented version 1.8-1.8.9 seen the difference in the packets compared to the later versions.

However the ItemLines seem to have some problem with the position in these older versions. (Not the armorstands but just the head slot).

Preview

Hi,

Having issue with the latest ProtocolLib and papermc latest versions. ProtocolLib : #608 Papermc : #347

As long as holograms are enabled on my plugin, I can't connect, I crash with the exception below. If I disable them, I can connect.

Packet encoding of packet ID 78 threw (skippable? false)
java.lang.ClassCastException: class net.minecraft.network.syncher.DataWatcher$Item cannot be cast to class net.minecraft.network.syncher.DataWatcher$b (net.minecraft.network.syncher.DataWatcher$Item and net.minecraft.network.syncher.DataWatcher$b are in unnamed module of loader java.net.URLClassLoader @36aa7bc2)
	at net.minecraft.network.protocol.game.ClientboundSetEntityDataPacket.pack(ClientboundSetEntityDataPacket.java:17) ~[?:?]
	at net.minecraft.network.protocol.game.ClientboundSetEntityDataPacket.write(ClientboundSetEntityDataPacket.java:38) ~[?:?]
	at net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:41) ~[paper-1.19.3.jar:git-Paper-347]
	at net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:14) ~[paper-1.19.3.jar:git-Paper-347]
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:120) ~[netty-codec-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.DefaultChannelPipeline.write(DefaultChannelPipeline.java:1015) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.AbstractChannel.write(AbstractChannel.java:301) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.write(NettyChannelProxy.java:210) ~[ProtocolLib.jar:?]
	at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.write(NettyChannelProxy.java:199) ~[ProtocolLib.jar:?]
	at net.minecraft.network.Connection.doSendPacket(Connection.java:459) ~[?:?]
	at net.minecraft.network.Connection.lambda$sendPacket$10(Connection.java:428) ~[?:?]
	at com.comphenix.protocol.injector.netty.channel.NettyEventLoopProxy.lambda$proxyRunnable$2(NettyEventLoopProxy.java:48) ~[ProtocolLib.jar:?]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute$$$capture(AbstractEventExecutor.java:167) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
	at java.lang.Thread.run(Thread.java:833) ~[?:?]
`` 

How can I get some hologram, I was looking at the library code and I can't find any method to get this unless I modify it.

ex:

public void moveHologram(Player player, ???? ???) {
    hologramPool.getHologram(???).teleport(player.getLocation());
}

I tried to test the library but putting it to show the player when entering simply crashes the game.

// Why is it breaking :(

Time: 03/11/22 10:45 PM
Description: Ticking entity

java.lang.ClassCastException: java.lang.Byte cannot be cast to dc
	at pz.h(DataWatcher.java:149)
	at um.t_(SourceFile:538)
	at adm.a(SourceFile:1408)
	at adm.g(SourceFile:1386)
	at adm.i(SourceFile:1279)
	at ave.s(SourceFile:1850)
	at ave.av(SourceFile:889)
	at ave.a(SourceFile:325)
	at net.minecraft.client.main.Main.main(SourceFile:124)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at pz.h(DataWatcher.java:149)
	at um.t_(SourceFile:538)
	at adm.a(SourceFile:1408)
	at adm.g(SourceFile:1386)

-- Entity being ticked --
Details:
	Entity Type: ArmorStand (um)
	Entity ID: -2146099896
	Entity Name: Hello World!
	Entity's Exact location: 0,84, 88,88, 0,38
	Entity's Block location: 0,00,88,00,0,00 - World: (0,88,0), Chunk: (at 0,5,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Entity's Momentum: 0,00, 0,00, 0,00
	Entity's Rider: ~~ERROR~~ NullPointerException: null
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at adm.i(SourceFile:1279)

Code:

public class ExampleHolograms implements Listener {

    private final Plugin plugin;
    private final HologramPool hologramPool;

    public ExampleHolograms(Plugin plugin) {
        this.plugin = plugin;
        this.hologramPool = new HologramPool(plugin, 70, 0.5f, 5f);
        Bukkit.getPluginManager().registerEvents(this, plugin);
    }

    /**
     * Appends a new Hologram to the pool.
     *
     * @param location The location the Hologram will be spawned at
     * @param excludedPlayer A player which will not see the Hologram for 10
     * seconds
     */
    public void appendHOLO(Location location, Player excludedPlayer) {
        Hologram hologram = Hologram.builder()
                .location(location)
                .addLine("Hello World!", false)
                .addLine("Using Hologram-Lib", false)
                .addLine("Hello %%player%%", true)
                .addLine(new ItemStack(Material.IRON_BLOCK))
                .addPlaceholder("%%player%%", Player::getName)
                .build(hologramPool);

        hologram.getLines().get(3).setAnimation(Animation.AnimationType.CIRCLE);

        if (excludedPlayer != null) {
            // adding the excluded player which will not see the Hologram
            hologram.addExcludedPlayer(excludedPlayer);

            // shows 10 seconds after theHologram
            Bukkit.getScheduler().runTaskLater(plugin, () -> hologram.removeExcludedPlayer(excludedPlayer), 20L * 10);
        }
    }

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        Player player = event.getPlayer();
        appendHOLO(player.getLocation(), null);
    }

    @EventHandler
    public void onHologramInteract(PlayerHologramInteractEvent e) {
        Player player = e.getPlayer();
        TextLine line = e.getLine();
        player.sendMessage("Click at " + line.parse(player));
    }
}

Hi,

Having this exception when I join the world with an hologram near to me

[15:57:50 WARN]: [HeadBlocks] Plugin HeadBlocks v2.0.7 generated an exception while executing task 31 java.lang.IllegalArgumentException: No serializer found for class java.lang.Byte at com.comphenix.protocol.wrappers.WrappedDataWatcher$Registry.get(WrappedDataWatcher.java:939) ~[ProtocolLib (2).jar:?] at com.github.unldenis.hologram.packet.IPackets$PacketsV1_9V1_18.metadataPacket(IPackets.java:205) ~[HeadBlocks-2.0.7.jar:?] at com.github.unldenis.hologram.TextLine.show(TextLine.java:42) ~[HeadBlocks-2.0.7.jar:?] at com.github.unldenis.hologram.Hologram.show(Hologram.java:131) ~[HeadBlocks-2.0.7.jar:?] at com.github.unldenis.hologram.HologramPool.lambda$hologramTick$5(HologramPool.java:150) ~[HeadBlocks-2.0.7.jar:?] at org.bukkit.craftbukkit.v1_19_R1.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.19.jar:git-Paper-17] at org.bukkit.craftbukkit.v1_19_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57) ~[paper-1.19.jar:git-Paper-17] at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) ~[paper-1.19.jar:?] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?] at java.lang.Thread.run(Thread.java:833) ~[?:?]

What should I do to correct the problem? Thank you! Best regards,

Hello, I am setting up a ranking and need to make holograms in individual for each player, the player will be able to switch the ranking depending on types and because of this I need the hologram to be unique.

I tested the placeholders and it seems to be very complex to use them for this case, could you show me an example of how to do this ?