help-development

[sterile token]

fourte

I refactored

Now main, only start the FakeClient and opens the connection

[tardy delta]

ok

[tardy delta]

what was the problem anyways lol

[sterile token]

I dont know how to send the packet back

[tardy delta]

what packet

the long being read?

[eternal oxide]

change the while in the keepAlive() to if

[sterile token]

k

Done

Still being disconnected

[frail spire]

With what error

[eternal oxide]

you need to write to a ByteArrayOutputStream

to build the keepAlive packet

[sterile token]

App console no error, and neither server

[eternal oxide]

then send it once built

[sterile token]

oh ok, how i was doing with packet up?

[eternal oxide]

yes

[sterile token]

Nice?

Shity mc packets

😡

I dont catch how the fuck they works

[eternal oxide]

looks good

[sterile token]

I test and fails

Just disconnect me

I will send you the zip file

[eternal oxide]

instantly or after a time?

[sterile token]

Yeah sever disconnect me out instantly

So packet is not sent or smth like that

[eternal oxide]

um exit code 0 means your process finished

[sterile token]

yeah ik

[frail spire]

It ended itself

[eternal oxide]

did you forget to loop in your main?

[sterile token]

I removed thw while tho

[eternal oxide]

in teh keepAlive, yes

you shoudl still be looping in your main

[sterile token]

That why i dont like shity java.net sockets

[eternal oxide]

move your keepAlive call back to yoru main, after the connect

in a while loop

[sterile token]

I mean i wouldnt like to have it like that tho

But for testing no problem

[kind hatch]

But that's how keepalive works. It needs to be constantly sent on a frequent basis.

[eternal oxide]

you have to loop to keep reading new packets

[sterile token]

I need to compact tha tinto the lib

Not doing it on program main class which uses the library

[20:43:04 INFO]: FakeClient lost connection: Internal Exception: io.netty.handler.codec.DecoderException: Badly compressed packet - size of 20 is below server threshold of 256

Still having that shity error

😂

[frail spire]

Boost the size to 256 then

[sterile token]

Hmnn

I dont even understand the shity exceptions

Because the protocol is so well designed

😡

[frail spire]

You compressed the packet into a size of 20
But the server wants a size of 256

[sterile token]

im not compressing it?

[frail spire]

Check for every class that sends packets

[sterile token]

He?

There is no other class

[frail spire]

Wtf

[sterile token]

There 3 methods only on tha class, Handshake, Login and keepAlive()

It must because im not sending correctly the packet

[frail spire]

Then handshake and login?

[sterile token]

They are okay

It just the fkng keepAlive()

Its really diff, because there is no fkc example about sending packets

Just tell what ** to use in the packet itself, but not how do to send it🤡

[frail spire]

It's just like last time I tried discord websocket
Sent a keepalive but they boot me off instead

[sterile token]

Discord?

Im working with mc ptcol

😂

[frail spire]

But the same problem here
You got kicked for compressed size
I got kicked by false keepalive

Sometimes it's hard to use something without libs

[sterile token]

ok

So what i can do?

[frail spire]

Find a mc protocol lib
And build on it

[sterile token]

hmn ok

[rigid loom]

https://paste.md-5.net/megalijaxo.cs
cant figure out why this is happening

[sterile token]

Does your plugin have 2 classes extending javaPlugin?

[rigid loom]

public final class Kingdoms extends JavaPlugin implements Listener is where it says its at

no

[sterile token]

Its saying that your pluign is already initialized

[vocal cloud]

You're reiniting your plugin somewhere

[sterile token]

yeah

FakeClient lost connection: Internal Exception: io.netty.handler.codec.DecoderException: Badly compressed packet - size of 32 is below server threshold of 256

Loving shity mc prtcol

🤣

[eternal oxide]

I'm going to guess you are in offline mode

change the min packet size in server.properties to 32

[sterile token]

Im testing it in offline mode

Is that the problem

That?

LMAo too much problems

[eternal oxide]

you could change it to 0 for no compression

[sterile token]

ok

[21:08:09 INFO]: FakeClient lost connection: Internal Exception: io.netty.handler.codec.DecoderException: java.util.zip.DataFormatException: inflate data is bad

Hahaha

Errors, erros and more erros, shity protocol that doesn thav a lib

[eternal oxide]

try -1 then

else I have no clue

[sterile token]

maybe the mc version?

Sever runs spigot 1.19.2

No bruh

I will send code

Because im really stressed with this

[21:10:02 INFO]: FakeClient lost connection: Internal Exception: io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(2) + length(1) exceeds writerIndex(2): PooledUnsafeDirectByteBuf(ridx: 2, widx: 2, cap: 256)

shity protocols

😡 😡 😡 😡 😡

[tardy delta]

🤡

[sterile token]

Yeah

Why dont the fuck just make a library

Instead of making us devs to have headaches trying to figure how their shit works

[mental frigate]

hello

could anyone help me?

                Utils.getConfig().getInt("Elves.player-avoid-distance"),
                Utils.getConfig().getDouble("Elves.player-avoid-speed"),
                Utils.getConfig().getDouble("Elves.player-avoid-speed")));```

but my mob isnt running away from player, can anyone tell me what i am doing wrong?

[mental frigate]

why the fuck do they use a, b, c, d, e, f, g etc. instead of using normal variables names

[tardy delta]

obfuscation

[mental frigate]

wdym

[wet breach]

https://wiki.vg

protocol is quite well documented for the most part

[mental frigate]

oh ye, that makes sense

[wet breach]

also of note, obfuscation can make the overall binary smaller too

[mental frigate]

but they are making things so difficult 😭

[remote swallow]

thats the point im pretty sure

[mental frigate]

anyway, anyone?

[mental frigate]

ye maybe

[vocal cloud]

The point is both to make reverse-engineering harder and to make the binary smaller. Removing long variable/method names helps reduce the binary size by quite a lot.

[mental frigate]

thats makes sense

*that

but i am dying inside

and i can't find a way to fix my problem 😫

[sterile token]

I try but i dont udnerstand how to format the packet

[vocal cloud]

What version of MC

[sterile token]

Me?

[vocal cloud]

Not you

[sterile token]

ok

Reply so

Because if not its a mess

[vocal cloud]

I thought it was a reply

[sterile token]

oh haha

[wet breach]

well you not understanding how packets and networking works isn't the fault of other devs or other devs making it too difficult.

[sterile token]

Yeah i dont understand how they serialize

[tardy delta]

as a bytearray ig

[sterile token]

😬

[wet breach]

the only serializing that happens is if compression is used or not, otherwise the network card handles serializing the data into binary

[sterile token]

Really thanks mate for recommending a library instead of doing it myself

I mean i would not use the full library i will definitly try take from it the things i need

Because its like 8mb library

[atomic swift]

how do i get all files within a directory

[eternal oxide]

Files.listfiles or soemthgin close

[atomic swift]

does anyone know if Path#getFileName() returns the file extension bc the jdoc just says

Returns the name of the file or directory denoted by this path as a Path object. The file name is the farthest element fromthe root in the directory hierarchy.

   Returns:   a path representing the name of the file or directory, or null if this path has zero elements

[wet breach]

extension is part of the file name

[atomic swift]

not really

[file-name].[extension]

[wet breach]

alright don't listen to me then

[orchid gazelle]

It does include the extension

[wet breach]

extension is part of the filename, and the OS only makes that distinction for viewing purposes, but from a programming perspective it isn't separate

[atomic swift]

i knew what you were saying but i was just saying it doesnt really make sense

[orchid gazelle]

That is correct

But to answer their question: yes, this method does include giving you the extension

For sure you basicly answered, but just to make it clear

[wet breach]

it is why I provided that last bit before you said I was correct 😛

[orchid gazelle]

Ok

[sterile token]

File#listFiles()

File dir = new File("path/to/dir");
File[] files = dir.listFiles();

[hazy parrot]

Any idea how can I exclude sqlite jdbc dep natives (am I even able ? ) because its like 23mb

[sterile token]

wft

[vocal cloud]

Isn't it a provided library?

[sterile token]

SQLite lib is not 23mb

[hazy parrot]

it is

[vocal cloud]

Then just set the scope to provided?

[hazy parrot]

Im not using it with spigot, just general question

[sterile token]

sqlite-jdbc

it not more than 1mb

🤔

[chrome beacon]

Sqlite is already bundled with Spigot

[hazy parrot]

natives take more then 20mb

[hazy parrot]

.

[chrome beacon]

Ah

[vocal cloud]

Sqlite jdbc is a 12mb jar

https://mvnrepository.com/artifact/org.xerial/sqlite-jdbc/3.39.4.0

[sterile token]

🤔

[hazy parrot]

why tf is it 23 here then

<dependency>
            <groupId>org.xerial</groupId>
            <artifactId>sqlite-jdbc</artifactId>
            <version>3.39.3.0</version>
        </dependency>

using this

[vocal cloud]

Oh lmfao you're reading it wrong

The packed size is 12.5

The unpacked is 23

[hazy parrot]

🤦‍♂️

[plain sandal]

does anyone know a good plugin for random kit pvp servers?

[orchid gazelle]

Wrong channel

[sterile token]

#help-server for none programming

[vocal cloud]

Ask in #help-server

[plain sandal]

ok

ty

[sterile token]

Please use the correct channels - Thanks

[plain sandal]

np

[smoky widget]

OfflinePlayer p = Bukkit.getOfflinePlayer(name);
        ItemStack is = new ItemStack(Material.PLAYER_HEAD);
        SkullMeta m = (SkullMeta) is.getItemMeta();
        m.setOwningPlayer(p);
        is.setItemMeta(m);

why with this code i got a steve head ?

but when i place it, it work

(and also i saw the data of the head is by value and when i place it, it's by skull owner)

[fluid river]

have you tried picking the head up after you place it

[smoky widget]

yes and it work

when i give it i have a value and when i pickup it i have skull owner (in nbt with data command)

[fluid river]

i mean skin on the head

when you place it and break it and pick it up

it has the skin you want

but when you give it with command it doesn't(until you place)

[smoky widget]

no

(when i pickup it with middle mousse button and ctrl)

[fluid river]

hmm

[smoky widget]

huh i inverted

when i give it i dont have texture property and when i place it i have

[wet breach]

what you could do is use maven to strip out what you are not using

however sometimes this breaks libs especially ones that are also plugins, but proper libs like sqlite however it generally doesn't cause issues

just add <minimizeJar>true</minimizeJar> to maven shade configuration

as I said, sometimes breaks libs so do some testing first with the final jar to see if it still works lol

[quaint mantle]

// COMMAND CLASS
public class Msg implements CommandExecutor {
    
    @Override
    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {

        System.out.println("works");

        return false;
    }
}

// also added it into the onEnable and in the plugin.yml```

Is there a new way to override the /msg command ?

[wet breach]

also you must be getting confused between the difference of size and size on disk

the size you see, is the size on disk and the reason this may be different is because it is dependent on block sector size for the disk

for example, lets say the block sector size is set to 5mb per block, the size on disk will be 15mb because it will use 3, 5mb block sectors to store 12mb

[hazy parrot]

Thanks, will try that 👍

[hazy parrot]

Yeah I understand, thanks

[river oracle]

You'd need to use PlayerCommandPreProcessEvent for that

[quaint mantle]

Ohh okay.

[humble tulip]

@quaint mantle alternatively you can unregister the vanilla command from the command map

[valid basin]

Does anyone know a way to make a player completely blind? I'm creating a gamemode that requires flashes (like in FPS games)

I need a way to make someone completely blind, not with effects tho

[river oracle]

Why not with effects that's likely the easiest way

U can remove the particles

[valid basin]

Because they're not completely blind

They can still see the player if he comes close

[river oracle]

You could do that and hide all players in their radius closely than unhide them once it wears off

Otherwise ull need packet fuckery

[valid basin]

or maybe spawn particles per player

with packets yea

that covers his vision completely

[wet breach]

You don't necessarily need packets to hide players.

[river oracle]

yea doesn't spigot have that in API now

[fluid river]

has

Player#hidePlayer()

and Player#showPlayer()

[boreal temple]

hey how do i allow default players to use tm commands

tp

[fluid river]

add permissions?

and how is this related to development

#help-server i guess

[echo basalt]

If above 1.14, just make a resource pack with a white image

You can then color it with rgb n such

[vocal cloud]

A player could cheat by not using it though

Give them blindness

[stuck flax]

What is the default reason is none is provided in the inventory#closeInventory method?

[vocal cloud]

Where are you seeing a reason for closeInventory?

[stuck flax]

InventoryClickEvent.closeInventory(Reason)

[vocal cloud]

Sigh, Paper moment

[remote swallow]

?paperdev

[undone axle]

Make sure to ask in the appropriate server concerning development towards different JAR types such as PaperMC. (Tip: Google them!)

[stuck flax]

Ah didn't realise it was Paper-only

myb

[worldly ingot]

fwiw, if you're compiling against the Paper API, you should probably be asking your question in the Paper Discord/forums anyways

[vocal cloud]

Easy way to find out is to read the docs

[fluid river]

player.closeInventory()

no "reason" provided, but it's an alternative anyways

[vocal cloud]

With paper the reason is probably 'unknown' by default

[frail gale]

is it possible to save Objects into ItemStack’s NBT Data? Objects like: List and HashMap

[vocal cloud]

Big question is: why

[frail gale]

Well it’s hard to explain

but is it possible?

[wet breach]

?pdc

[undone axle]

https://www.spigotmc.org/threads/a-guide-to-1-14-persistentdataholder-api.371200/

[wet breach]

If you serialize the data into base64 pretty sure you could easily store it into pdc

[vocal cloud]

Possible? Yes. Do you want to? Probably not.

[wet breach]

Yeah considering items can sometimes magically disappear

If that happens well there goes your data lol

[frail gale]

I was thinking about that

well my idea is just to make Inventories from the Item’s NBT Data

and continue with sub inventories

[wet breach]

You are better off using something similar to schematic files except with inventories. Items are subject to just being removed.

If the item drops, you will lose all the data with it

[frail gale]

the items will be in a GUI so they are not gonna be droppable

but I’m thinking for other possible ways too

like what’s the best way to make a GUI which will list some folders and then you can open each one close it create new folders

[wet breach]

Since you are already going to have a custom inventory you might as well just use file storage or db storage for the data.

[frail gale]

like windows file explorer

[frail gale]

file storage can be a good solution

[frail gale]

idk how to call it maybe Recursive GUI

[pine forge]

@kind hatch Did you test this yet?

[quaint mantle]

How do I spawn a vanilla mob in a different biome

Ive got some nms code setup but it's not working

I ended up just creating dirty by sometimes replacing animals with the mob I want on chunk load

[cobalt marlin]

i think you can change spawning rules with datapacks

[cerulean lynx]

is there any good website for learning java

i tried w3 but dont understand methods

[jagged monolith]

?learnjava

[undone axle]

Here are some links to get you started on learning Java:

• https://www.codecademy.com/learn/learn-java
• https://www.sololearn.com/learning/1068
• https://www.learnjavaonline.org/
• https://programmingbydoing.com/
• https://docs.oracle.com/javase/tutorial/java/index.html

The last one is the only official one, however some of those concepts assume that you already know a bit about programming.

[jagged monolith]

Another one that isn't on the list is Udemy. It has really good java courses, but they aren't free

[cerulean lynx]

do you know someone on udemy?

cost doesnt matter

[jagged monolith]

Tim Buchalka Is a really good instructor for it

[cerulean lynx]

thanks

and another question

where should i reach

for plugin developing

[jagged monolith]

All the basics would be a good start. As well as things like inheritance, try and catch, abstract

[rough drift]

That's just a java course lol

[cerulean lynx]

thanks

[jagged monolith]

?di

[undone axle]

Guide to dependency injection: https://www.spigotmc.org/wiki/using-dependency-injection/

[jagged monolith]

That's also good info to have @cerulean lynx

[cerulean lynx]

understand other things but what is this doing

[rough drift]

this. tells Java that you are setting one of the class's properties rather than a property in the current scope

so since you have two variables both named plugin (on in the class, one as a parameter) you use this. to set the one in the class

public class Test {
  private final Plugin plugin; // <- This is indicated by this.plugin

  public Test(Plugin plugin) {
    this.plugin = plugin; // "plugin" is the variable in the constructor
  }
}

[cerulean lynx]

alright thank you

[molten hearth]

methods are the equivalent of functions in other languages if you know any

[humble tulip]

ServerConnectEvent is called before the connection is even being made. What is called if that cinnection fails?

Eg. Player does /server test1

Test1 is down however so bungee tells them that it's down

What even is called when a connection isn't made?

[fluid river]

FREE JAVA LESSONS

[soft viper]

can i use ClickEvent.Action.RUN_COMMAND not from player

from cmd

[hazy parrot]

What

[soft viper]

ClickEvent.Action.RUN_COMMAND executes a command from the player, can it execute command from cmd?

[eternal night]

No

The client just sends the command to the server

It's executed as if the player typed that command into the chat and sent it

[trim creek]

if you want to execute a command from the console, use Bukkit.dispatchCommand(Bukkit.getServer().getConsoleSender(), "command here without splashes");

[humble tulip]

Why do u want it to execute a xommand frm the console?

[trim creek]

could be many reasons

[soft viper]

i cant do it in BaseComponent event

[humble tulip]

If they click it twice itll run the console command twice

[trim creek]

then make a command that executes the correct command from the console

[humble tulip]

This is possible

But if you wanna be more secure

You can make the command something like /<uuid here>

[trim creek]

like /playercommand, which will make console execute your required command

[humble tulip]

And check the command pre process event

[trim creek]

HashMap

[soft viper]

I did it, but maybe there is any better method to do it

[humble tulip]

And use uuid to match up the commands

[trim creek]

mmmmmm probably but I dunno

[humble tulip]

So let say you'd like to use the command /eco give steve 200

But you don't want them spamming it

Assign a random uuid to the command and put it in a map

[trim creek]

instead of UUID, do a HashMap. .-.
More easier and can be set whatever they want to. Just make sure not to make it spam any errors after the execution of the command

[humble tulip]

It works

But it's not concrete

[valid basin]

Yes, and use a runnable that runs every x amount of ticks to hide players in sight of the player

[trim creek]

both should work, but HashMap is probably better

[humble tulip]

Personally I'd use the uuid method

[trim creek]

well, depends on everyone's mind

[humble tulip]

Uuid with a hashmap

[trim creek]

Perfect

xd

[humble tulip]

If the player gets sent two msgs with 2 diff commands

What happens there

[trim creek]

they either execute one, or both 😹

[humble tulip]

You'll need a new hashmap for every new command you'd like to excute

[ionic dagger]

What’s the correct way to check if a player clicked in a specific inventory

[flint coyote]

Comparing the InventoryHolder

[ionic dagger]

Could you give me an example of that?

[flint coyote]

and creating your Inventory with a specific one

Let me find the project I used this in 😅

[ionic dagger]

Yea I checked if the player that triggered the oninventoryclick event clicked in an inventory with the name equal to the name of the inventory I created

I think by using getWhoClicked() but I did it last night at like 3am so that’s probably not the right method call

[flint coyote]

Anvils can be renamed which also renames the inventory iirc. So that's not the most secure way

[ionic dagger]

What??

Oh

I see

[flint coyote]

If you rename an anvil inside an anvil (or might also work for chests) and you place it. I think it keeps the name

[ionic dagger]

Maybe I can make an inventory class and j check if it’s in an instance of that class

But that seems super complicated for a simple task so they’re definitely a better way at going about this

[flint coyote]

yeah you check the inventory holders instance usually

Bukkit.createInventory(new MyOwnHolder(), size, name)

...
}

And in the InventoryClickEvent you just check

if (!(inv.getHolder() instanceof MyOwnHolder)) return;

[ionic dagger]

Oh

So there’s no easy way?😞

[flint coyote]

how is that not easy? o.o

Why would implementing InventoryHolder be a problem?

So you'd rather implement or extend your own Inventory class?

But then you have to keep track of each inventory that you open for a player. This way the holder (which is stored inside the inventory) is used to keep track of it

It just seems overkill if you can use the holder. Especially since it would be null if you don't use it for that

[ionic dagger]

How would u do it w maps

[ivory sleet]

You can use InventoryView right?

[ionic dagger]

That’s what I did

[flint coyote]

I see, alright. I'll keep it in mind

You mean a custom Anvil inventory?

yeah that would make sense. So far I only did normal inventories

Wait but would you set Anvil as the InventoryHolder for a custom anvil inventory?

Oh so it's done in createInventory I suppose

[white root]

Is there an easy way (or any way) to listen for a shrieker shrieking? I thought that I might find a ShriekerShriekingEvent or something similar, but I wasn't able to find anything?

[fallow violet]

where can i report bugs?

[flint coyote]

As usual. What seems to be the problem?

[white root]

I believe: https://hub.spigotmc.org/jira/secure/Dashboard.jspa

[flint coyote]

Well then you are in a static context. That's not the schedulers fault tho.

[hybrid turret]

Can I give the player an item with which he can click on e.g. an iron door to lock it and then give him a key to open said door?

[mighty pier]

you can

[hybrid turret]

ooo

[flint coyote]

Welcome to the world of coding 👋

[hybrid turret]

i have searched for a while now and i figured i'd ask :D

[white root]

Thats probably something you would have to make yourself via a plugin

or have someone make for you

[hybrid turret]

yk, i've been developing a large server-system (currently on 1.16.4 but i'm planning on migrating to 1.19.2 once i figure out how easy that is) and this is just a thing that popped into my mind a while ago but i haven't found a solution

[hybrid turret]

ofc

[mighty pier]

hopefully you arent paid

[hybrid turret]

wdym by that?

[worn tundra]

:D

[molten hearth]

lmao

[hybrid turret]

am i not getting jokes rn? sorry lmao

my brain has been dead for the last couple days

[flint coyote]

Couldn't find anything either :/ You could check spigots code on how they figure it out and use the same code / use reflection. But that's certainly not easy
What are you planning to do?

[hybrid turret]

I guess, check spigot api, maybe there's an event

or did you try that already?

[mighty pier]

maybe you should try that

[flint coyote]

I thought that I might find a ShriekerShriekingEvent or something similar, but I wasn't able to find anything?

[mighty pier]

thats what developers do

[worn tundra]

Constantly check the warning level 5head
https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/block/SculkShrieker.html

[hybrid turret]

not even in the api anything at all?

hm

mb

[hybrid turret]

o.o

fair enough

[worn tundra]

💀💀💀💀💀

[flint coyote]

There even is "isShrieking" but then he would have to find all sculk shriekers before

[dim bronze]

or just the ones within range of a player

[worn tundra]

Try blockphysicsevent or similar

[white root]

Since nobody seems to like phantoms, I had the idea to rework them. My idea was to have the 2nd shrieker shriek summon in a few phantoms, since they seem to be a good fit for the deep dark area/dungeon thing.
This would have phantoms be a thing that is caused directly by something the player does rather than just something that happens to the player randomly for not sleeping

[hybrid turret]

i was just gonna say that

[flint coyote]

Yes you don't want static unless it actually makes sense

[flint coyote]

I think the warning level is stored to the player. So you could check that every few ticks

[hybrid turret]

i hate static so much lmao

[white root]

Good idea, Ill give this a shot and see what I can work out

[dim bronze]

You could also listen for when a sound is played to the player

I imagine there is a way to get the block source of the sound

and only then do you have to check whether its a skulk sensor

[flint coyote]

plays on mute I hate phantoms /s

[worn tundra]

We're probably not seeing smth very obvious for the shrieker lol

Must be some interact / change event or something

[flint coyote]

That's still a lot of iterations depending on how fast the player is travelling

[dim bronze]

I don't know whether the shrieking is handled client side though

[dim bronze]

no iteration needed?

[white root]

Prior to posting here, my best idea was to try and catch when the shrieker particles are sent to the player, so not far off of my line of thinking

[flint coyote]

So how do you find shriekers around the player without checking close blocks?

[dim bronze]

I'm thinking purely off the playsound command here but don't sounds that are played to the player have a source?

you'd just have to check the sound source block

[flint coyote]

Oh you wrote that before you started the sound thing. So I didn't take that into consideration, sorry :D

You remove static and use either DI or an actual object?

[dim bronze]

https://wiki.vg/Protocol#Sound_Effect
The effect position is inside this packet so could work

I assume the shrieker isn't client side since the warden spawns after x number of shrieks

[flint coyote]

Then do it

[dire marsh]

GenericGameEvent - GameEvent.SHRIEK

[dim bronze]

That's a lot simpler 😆

[hybrid turret]

  public void onUseKeyInteractable(PlayerInteractAtEntityEvent e) {
    Player p = e.getPlayer();
    ItemStack item = e.getPlayer().getItemInHand();
    if (item.getType() == Material.NAME_TAG && item.containsEnchantment(Enchantment.LUCK)) {
      e.setCancelled(true);
    }
  }```

Can someone explain why tf this code won't work? I don't get it (yes, the if-statement is reached)

[worn tundra]

What doesn't work?

It doesn't get cancelled?

[undone axle]

"Does not working" is a useless statement. Please describe what exactly is not working, what you expect it to do, and what actually happens. If you get any console errors, also ?paste the entire stacktrace.

[hybrid turret]

exactly

i'm sorry

oh really?

[white root]

<player>.inventory.getItemInMainHand

[dire marsh]

@white root btw ^

[hybrid turret]

welp, that's probably the issue

ty

[white root]

Ah, lemme look into that

[hybrid turret]

not?

[dim bronze]

that's definitely the proper way of doing it. No idea that event existed

[dire marsh]

i found it by searching for shriek on the papermc discord xd

[white root]

Uh, another thing, how do you listen to a/the GenericGameEvent?

[dire marsh]

i think it's the new event system mojang added

[dire marsh]

just like any other event

[white root]

Im compiling against org.spigotmc:spigot-api:1.9.2-R0.1-SNAPSHOT but intellij doesnt seem to know what that is
https://uploadi.ng/🔮👔📻🤾

[dire marsh]

1.9.2
hmmm

think you meant to type 1.19.2

[white root]

I might be dumb, one second

ah, yep, I was using 1.9.2 lmao

ok nvm

[dim bronze]

1.9.2?

[white root]

yeah, typo in my build.gradle lol

[worn tundra]

💀 howd you get it lol

[dim bronze]

OMG

OMG

A kotlin user!!!

[white root]

A bit like a unicorn am I?

[dim bronze]

been a while since I've seen another in the wild

[worn tundra]

kotlin user when

[dim bronze]

didn't even clock in the screenshot, it took me till you said you were using gradle

I thought this doesn't sound like a java developer

[flint coyote]

I use kotlin at work but code java outside of work so I don't forget everything :D

We still use maven with kotlin tho 💀

[dim bronze]

💀

[twin venture]

Hi is there any good tutorial on how to use packets to spawn , and munplate entites?

[wet breach]

makes sense since kotlin compiles to java bytecode

[dim bronze]

once you use gradle there's no going back to maven

[white root]

Can confirm

[flint coyote]

Not much of a wonder considering how painful maven multi module builds are

[dim bronze]

and there's no need to rely on plugins for everything. If you want something to happen during your build you just code it rather than getting a plugin that does it

just makes sense

[wet breach]

Maven is highly customizable

there really isn't anything maven can't do

majority of people who see or complain of maven going slow is due to the fact they haven't learnt maven or bothered to configure it properly

[wet breach]

People forget you can just make custom maven plugins

making a custom maven plugin is no more difficult then making a plugin for spigot

you can even have maven execute build scripts too if you really dislike maven that much or you can combine maven with ant as well

[wet breach]

not sure why this is painful for you

in either case which you want to use is mostly preference. The majority here will most likely never see any differences between the two because you really need super large projects to really see the difference.

maven by default is configured to be conservative with resources

you need to modify the maven config or add it to your pom to allow maven to use more resources. As well as concurrent building

[dim bronze]

Yeah totally it’s preference

I don’t really have any massive projects, but the small things that I do utilise are much easier to make in gradle than maven from my experience

And not sure if this is just a kotlin thing, but by default gradle is definitely slower than maven

[wet breach]

well ease of use is mostly down to what makes sense to you. For some gradle makes sense, for others maven does. I prefer maven because literally there isn't a problem I can't solve with it build wise. I can either find a plugin to resolve whatever issue or provide some functionality or I can make one.

[wet breach]

this is probably due to the fact that on small stuff you can't really take advantage of where gradle performs

[ionic dagger]

Bro is a class a jester

Got me giggling n shit

[dim bronze]

Oh yeah I definitely don’t use gradle to it’s full potential

[wet breach]

well at least you know you are 😛

[dim bronze]

But I was definitely worse with maven

I would do so much manually

And maven is a joke for kotlin development

[wet breach]

I don't use kotlin so I can't really say

[dim bronze]

I’ve never had a problem with maven using Java

[hasty prawn]

Does anyone use gradle to its full potential? Seems like its so jam packed with stuff that'd be near impossible

[echo basalt]

gradle is complicated

[wet breach]

Well unless you are using a kotlin JVM, kotlin compiles to java bytecode

[wet breach]

gradle is designed to be optimal for long running builds

like builds that can take hours or even a day or so

[hasty prawn]

oh hell nah

[hybrid spoke]

gradle's onl advantage for me is for big ass projects

other than that it only causes problems

[hasty prawn]

I get impatient when my build takes 30 seconds

[wet breach]

For example, compiling something like Firefox

[dim bronze]

Of course, but telling maven to ‘compile’ kotlin and customise as you need it a lot more difficult in maven

[wet breach]

Firefox literally can take you half a day or more to compile XD

[dim bronze]

I used to use brave-git from the arch AUR and rather than use their binaries it recompiled the browser

Every

Fucking

Update

[wet breach]

lol

[dim bronze]

Took forever

Of course that wasn’t using a JVM language but gives you an idea of how long a build actually can take

[hybrid spoke]

in a more professionel environment you just commit to the branch and it gets automatically built every 3 hours or so. you only notice if you get an unfriendly mail that you broke the build

[wet breach]

when I had a dual core it took me something like 18-20 hours to compile firefox I think it was

[dim bronze]

That’s why you don’t push to main

[hasty prawn]

Makes sense

[wet breach]

yeah getting mails from the git blame

[hybrid spoke]

svn 🤡

[dim bronze]

They knew what they were doing when they made that command

[wet breach]

svn is alright until someone messes up the history

[dim bronze]

Blame

[hasty prawn]

Reminds me of OBS change logs where they blame the person for bugs directly

[dim bronze]

Haven’t ever used a source control other than git and don’t plan to

[hybrid spoke]

it really sucks. git would be 10000 times better

[wet breach]

might be more of inside joke more then anything lmao

[hasty prawn]

Still pretty funny

[wet breach]

well git has its downsides where svn is better

[dim bronze]

Probably, but I haven’t had issues

[wet breach]

svn is really easy to use and doesn't take much to set up, where it becomes a hassle is when you want to rollback something

[dim bronze]

If it ain’t broke don’t fix it

[wet breach]

or when you need to change the history

this is where git actually excels over svn

[dim bronze]

git push -f

[wet breach]

ah yeah, just force the commit because you don't want to actually fix the problem 😂

but even some people do what you would do on SVN to fix problems with git

for example, on svn instead of trying to rollback a change, you would just commit again with the changes reverted

and you just pretend the history is all fine and dandy XD

people who use git kind of do the same thing and don't bother with the rollback features

the other advantage of git is that everyone has a local copy, where as in svn you don't and thus you can't have multiple people checkout the same thing so file locking can be an issue sometimes

especially if someone forgets to checked in what they checkouted

[dim bronze]

what?

how does that work

so everyone just stays on separate branches?

[wet breach]

no, you are all on the same branch most of the time. But with SVN there is a server that maintains file locks

so if someone checks out a file

someone else can't check it out

[dim bronze]

yeah, but that sounds very limiting

especially on large projects

[wet breach]

so you have to wait for that person to make their changes, so you can make yours

[dim bronze]

i guess that stops conflicts but that just doesn't sound very productive

[wet breach]

it is, and it does work with large projects because it prevents a single file from being edited by multiple people who most likely are not even talking with each other

git does alright with this, but even git has its limitations when it comes to merging

[dim bronze]

does it follow the same general workflow of new feature -> new branch?

for large projects I guess that's followed more closely

[glossy venture]

in 2008 ppl thought git was too new appereantly

[wet breach]

ironically git was created in 2005

[wet breach]

yes but it works slightly different

every branch is a directory inside of the repo

also svn is more performant when it comes to large files as well or super large projects

also when it comes to permissions, git is very limiting. SVN allows you to set permissions all the way down to per file permissions and per directory

[dim bronze]

yeah I've had to deal with incompetent developers before me pushing gigabytes of data to a repo and of course when you clone or create a new branch the entire history goes with it

[dim bronze]

that does sound quite handy

[wet breach]

so svn is still used, just its has its strenghts and weaknesses like git has its strengths and weaknesses

[dim bronze]

as everything will

[wet breach]

for small to medium projects git is probably the best especially if you don't have too many people working on it

medium to large projects with quite a lot of people probably best to use svn

[wet breach]

another handy thing is, that unlike with git not just anyone can change the history with svn

you need access to the central server itself to change the history

with git, all it takes is someone to push the history to mess it all up for everyone else

[red sedge]

wait so uh if i do smth like HashMap<String, int>

would i need to have that identical string object to be able to match it

cuz like

yk how you cant use ==

[eternal oxide]

no

[red sedge]

because if my issue aint that i dont know what it is

[eternal oxide]

String keys are not compared by instance

[red sedge]

okayyyy um.. how about a string array

are string arrays compared by instance

[eternal oxide]

No clue, but probably

[red sedge]

fuck..

[eternal oxide]

it simple to test

[red sedge]

kk

ill brb

[ivory sleet]

You have IdentityHashMap at your disposal if you need identity based keys where it uses System::identityHashCode

[red sedge]

mmm yeah

string arrays check by instance

[red sedge]

i might just be a lil stupid but wdym by identity based?

[ivory sleet]

For any a and b, a and b are considered to be the same key if and only if a == b

[red sedge]

ah

yeah no thats not what i need

i have like a custom recipe system where I have a String[] of keys for items and a Recipe object for recipes in a hashmap so like Hashmap<String[], Recipe> and I need to make it so that String[] matches with any identical string array

        HashMap<String[], Integer> map = new HashMap();

        String[] str1 = new String[] {"a", "b", "c"};
        map.put(str1, 5);

        System.out.println(map.get(new String[] {"a", "b", "c"})); // so like this should also return 5 instead of null
        System.out.println(map.get(str1)); // returns 5

[tardy delta]

You might just make a record around that arr

[red sedge]

so instead of a string array i'd have a record that has 9 variables for each key?

[wet breach]

do these recipes have names?

[red sedge]

not really?

[wet breach]

because you can totally use a hashmap inside of a hashmap

[red sedge]

but i dont see how that would help?

[robust sinew]

how do I delete a World? Like if I want to delete the world's file on the server disabling what method do I use to delete it?

[wet breach]

the file delete method

[wet breach]

well the way you are going about it, seems very inefficient if it were me I would make a custom object to hold your string array and recipe in

[red sedge]

yeah but then how would i find the recipe?

this hashmap is to like uh find the recipe from the items in the gui

so i get the item id of each item in the gui

make an array

and then look up in the hashmap to find if there is a recipe for that specific combination of items

[wet breach]

it wouldn't be that hard....

[robust sinew]

what method is that, and how would I get my world folder that I want to delete?

thanks btw

[red sedge]

i might be overcomplicating it

[wet breach]

there is a reason why I mentioned using two hashmaps

[red sedge]

ya but i still dont see how id do it

feel like im missing smth really obvious sorry

[wet breach]

HashMap<String, CustomObject> CustomObjectMap inside of customObject is another HashMap<ItemStack, Recipe> RecipeMap. Now all you have to do is just do this
CustomObjectMap.get(String).RecipeMap.get(ItemStack) or something to that effect anyways

you could even do it without a custom object

[robust sinew]

ah nvm I figured it out

[wet breach]

HashMap<String, HashMap<ItemStack, Recipe>>

[red sedge]

wha-

1. what is the first string? huh

[wet breach]

the name or some identifier

anything really

[red sedge]

okayy

and um, how am i suppose to figure out what that is from 9 items in an inventory

[wet breach]

because you can decide on the names or make it use the names of the items

[red sedge]

okay so arent we doing the same thing?

[wet breach]

who cares how many recipes or combinations you have, just toss them all into the hashmap....not like the hashmap is going to break

[red sedge]

i am so confused right now im so sorry

[wet breach]

but the way I am suggesting is instead of trying to group them all together just keep it all separate

no need to really worry about if item a is the same recipe as item b if they are both in the hashmap anyways

anyways I am tired so I am going to bed, you are making it harder then it needs to be

or more like over thinking it

[red sedge]

extremely possible

alright

thank you

[untold patio]

Hello guys c; hope you're all fine

I'm compiling this code but when I run this command in the server, the console says "Null pointer exception"

[hazy parrot]

it would be useful to send that null pointer error

[untold patio]

Ok, gimme a sec

[vocal cloud]

I assume the map or array aren't initialized

[tardy delta]

make your main final pls

you better call it 'plugin' tho

[white root]

Or be a rebel and call it plugout

[vocal cloud]

private static final Main main

[vocal cloud]

Called it

[untold patio]

This is what happens :c

[vocal cloud]

Did you initialize the array you're adding it to?

[tardy delta]

Main line 36

[untold patio]

This is my main

[vocal cloud]

Yup

Called it

[dim bronze]

Homes and homes ahh

[tardy delta]

lul

[vocal cloud]

Ugh I'm still writing my State Manager tutorial. Guess my next one is going to be a "how to read an error"

[tardy delta]

private final Map<UUID, List<Home>> homes = new HashMap<>(); 🥺

[dim bronze]

this is immensely important

Most beginners definitely don't try to understand the error

purely because theres so much text that they won't understand

[untold patio]

Pls

[vocal cloud]

Understand your error

Because otherwise any error you get you'll just come back

[untold patio]

You're right

[hard ether]

Does anyone know how I could make a region and get the center block of that region?

ive been stuck on this for a couple hours

[eternal oxide]

region?

getCenter() https://hub.spigotmc.org/javadocs/spigot/org/bukkit/util/BoundingBox.html

[hard ether]

ty

[hard ether]

just a select portion of blocks

[icy beacon]

final String[] args = getCondition().split(" ");
final String[] arguments = new String[args.length - 1];
System.arraycopy(args, 1, arguments, 0, arguments.length);

Any way to simplify this? Basically want to create an array that is a split string, but pop the first argument

[patent fox]

how can i get the location to the right of the player depending on the perspective?

[smoky oak]

the location object contains a vector that gives the sight direction. Grab that, flatten it to the xz plane, rotate it 90° to the right

[icy beacon]

Figured it out!

final String[] args0 = getCondition().split(" ");
final String[] args = Arrays.copyOfRange(args0, 1, args0.length);

[patent fox]

how can i "flatten" it to the xz plane?

[smoky oak]

should be part of javas math packages

i recall doing some vector math

i can check the package

ah

i substituted my math with doing it directly oops

just check the vector3d class

it should have functions to flatten to a plane

[untold patio]

Ok guys, this seems to be working nicely, the only thing I see is that it's listing all the homes for all the players and not the ones a specific user creates

Should I add an UUID to the home class and check if that home has the sender UUID?

[tardy delta]

do you have a Map<UUID, List<Home>> in your main?

[untold patio]

Yes

[tall dragon]

you should not compare strings with == use #equals

[dim bronze]

theres no need to keep two collections, you can just use the values() of the map

[tardy delta]

well youre iterating over some kind of collection that is not a map

[red sedge]

in an inventoryclickevent do i need to just wait a tick to have the updated inventory

or is there anyway to force update it

[untold patio]

Sorry could you tell me where I compared the strings using ==

[tardy delta]

or you ensure youre the latest one that applied changes

[untold patio]

I mean I'm not sure if I used it or not

[tall dragon]

res += obj.getName() + " ";

[tardy delta]

== checks for the memory location of a variable, ::equals compares the actual content of an object and can be self defined

[untold patio]

Oh, but it's because I want a user to be able to have many homes

[tall dragon]

not even sure why ur comparing it there

without an if statement

[tardy delta]

we learnt loops in college today 💀

[untold patio]

Hmmm I'm not comparing

[smoky oak]

well i cant find the proper method so heres the stupid version: set the y value to 0, then use the (0,1,0) norm vector as rotation axis

[untold patio]

I'm just adding to the same variablew

[red sedge]

no i meant like if the player placed an item in it

[tall dragon]

right but why is the = there

its not needed to add

[red sedge]

do i need to wait for that change to affect the inventory in e.getInventory

[tardy delta]

you can get the changes with the appropriate event method?

[tardy delta]

=+

[tall dragon]

what is obj.getname ?

[tardy delta]

+= fuck

[smoky oak]

yea was bout to say that

[untold patio]

That's what I had in the beginning

x'd

[tardy delta]

atleast add a comma smh

[untold patio]

The home name

In the arraylist

[tall dragon]

works fine for me

[smoky oak]

the issue with this is that you're not checking if a player owns that home. youre checking if a player has a home at all, then you concatrinate all home names and return them. you need a check in the loop, or better yet, iterate over the homes of that player only.
If you're using configuration, if you try to get a configuration section it returns an empty configsection if the player has no home

so you wont get a NPE when iterating thta

[untold patio]

Well, that's not the same thing I'm doing there...

[smoky oak]

also

it might be an issue that youre typing homes once 'Homes' and once 'homes'

[vocal cloud]

There's so much wrong with it.

[tall dragon]

in a loop u should use a Stringbuilder

like intellij suggests you

[vocal cloud]

There shouldn't even be a loop or an arraylist

[tall dragon]

true

[smoky oak]

i did string weirdness before and never got that recommendation

[tardy delta]

exposing collections go brr

[tall dragon]

well here it is

and he has it too

[smoky oak]

hm

[tardy delta]

foo = ""

[smoky oak]

bar

[tardy delta]

shut

[smoky oak]

sorry reflex

[tall dragon]

shut

[tardy delta]

always wondering what foobar even meant

[icy beacon]

wait wtf since when is "yield" an operator in java

[tardy delta]

since the fancy switch

[smoky oak]

java 9 then

[icy beacon]

damn

i love it

[tall dragon]

what does yield even do

never heard of it

[smoky oak]

idk i use the new switch not the new operator

[icy beacon]

my copilot

[tardy delta]

return switch (state) {
  case BRRR -> {
    System.out.println("I'm outta here");
    yield -1;
  }
  default -> 2;
}```

[smoky oak]

bleh

[icy beacon]

so basically in the return switch i had this multi-line expression, and apparently you need yield to return values in those

[smoky oak]

somehow that looks wrong

[tall dragon]

isnt that just the same as return -1 ?

[smoky oak]

and cant you just do -> to give a return value from a switch

[icy beacon]

return is in the return switch

[tardy delta]

ye

[icy beacon]

you can if it's a one-liner

[smoky oak]

ah

yea logging wont be possible then

[tardy delta]

ffs

[smoky oak]

unless you call a function exactly for that returning the value but that sounds like a bad idea

[smoky oak]

mines blue and white at least lol

[tardy delta]

how do i know lmfao

damn pink

[vocal cloud]

They usually pick for you

just sudo reboot now

[tardy delta]

long time since i did updates lol

[vocal cloud]

sudo apt-get update && sudo apt-get upgrade && sudo reboot now

[tardy delta]

ill probably start dualbooting again

[icy beacon]

this is SO fancy omg

[tardy delta]

switch in a case 💀

[icy beacon]

i feel like i am coding in not java

[icy beacon]

yeah

that's.. that

[tardy delta]

https://tenor.com/view/well-that-sucks-well-that-sucks-gif-23911183

[icy beacon]

xD

[smoky oak]

y'al should update if youre running any sort of SSH cuz there's been a massive vulnerability that's been fixed in newer updates but is about to be disclosed

or downpatch to 1.x

[tardy delta]

im only using pi on my local network so dont really care lol

mf why am i pi@pi

[icy beacon]

me trying not to make an unfunny 3.14 joke

https://tenor.com/view/sweaty-speedrunner-gif-25363844

[smoky oak]

im gonna do it

[untold patio]

That's the one I used

😄

[tardy delta]

programmers: Math.PI

[hybrid spoke]

nah make a constant

[chrome beacon]

Mojang moment

[eternal night]

wtf

[peak depot]

for what would you need that

[tardy delta]

Math.pow(5, Math.PI)

[naive bolt]

how can i do an if statment where i have a bool true or false and in the if statment if the bool is true then i pass a condition in the if statmnet

[tardy delta]

probably doesnt accept a double as 2nd param

[summer agate]

do shit
}```

[naive bolt]

can i nest that in an existing if statment tho

[summer agate]

You'll have to elaborate

[naive bolt]

if bool false then have
if (blockData.getMaterial() != Material.AIR && blockData.getMaterial() != block.getLocation().getBlock().getBlockData().getMaterial()) {
else if true have
if (blockData.getMaterial() != block.getLocation().getBlock().getBlockData().getMaterial()) {

like a double if statment in one

idk im in a sleep wreck trying to do this

it probably doesnt make much sense its hard to explain

[summer agate]

You can probably find your answer in ?learnjava

Huh guess that didnt work

?learnjava

[undone axle]

Here are some links to get you started on learning Java:

• https://www.codecademy.com/learn/learn-java
• https://www.sololearn.com/learning/1068
• https://www.learnjavaonline.org/
• https://programmingbydoing.com/
• https://docs.oracle.com/javase/tutorial/java/index.html

The last one is the only official one, however some of those concepts assume that you already know a bit about programming.

[serene sigil]

how do u check if a player doesnt have a shulker box with a dragon egg inside (shulker box yes, but not with egg)

[vocal cloud]

Probably by fetching any shulkers they have in their inventory and checking if they contain dragon eggs?

[radiant cedar]

how can i count all stone blocks in a players inventory just to have the number
then remove all of them

but thats for single itemstack no?

i need how many they have in whole inventory

or should i iterate through each slot

[native ruin]

oh wasn't to you

sorry

[radiant cedar]

ohoh

[native ruin]

itemmeta or smth

[serene sigil]

i know how to check if they have, but idk how to do the opposite

[native ruin]

you can use getcontent and it should return everything in the inventroy

[native ruin]

instead of == use !=

[serene sigil]

my current code

[native ruin]

put an ! before the if statement

if(!condition)

[radiant cedar]

ye but how can i count like say cobblestone in someones inventory

should i iterate through all contents

or is there a better function

that will give how many cobblestones they have in inventory

[native ruin]

oh yea probably

[radiant cedar]

i couldnt find in docs

found one called getMaxStack or smthng

but idk if it returns largest stack

[chrome beacon]

https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/inventory/Inventory.html#all(org.bukkit.Material)

[robust sinew]

does onDisable() run when the server closes, or how could I run something on the server closing?

[chrome beacon]

Yeah your plugin gets disabled when the server is closed

[robust sinew]

for some reason the thing I'm doing isn't running

    public void onDisable() {
        getServer().getWorld("CustomCoolWorld").getWorldFolder().delete();
        super.onDisable();
    }``` I'm trying to delete my world file when the server closes

is there another way to do this?

[chrome beacon]

The world probably isn't unloaded yet

[robust sinew]

ah

how do I unload it?

I'll google it ig

I tried unloading the world but it didn't work

the world still didn't delete

[serene sigil]

yes, but that triggers also if u have 2 shulkers with one of them containing an egg and the other empty

(so it triggers for the first shulker which doesnt have anything and then doesnt triggers the shulker with the egg)

[severe marsh]

How can I check if the attacked entity is dead in the EntityDamageByEntityEvent event?

[tall dragon]

check if the victim's health - the final damage is lower than 0

[severe marsh]

Like this? if (e.getDamage() > ((Zombie) e.getEntity()).getHealth()) {}

[tall dragon]

not really

[severe marsh]

Because it doesn't let me do the e#getEntity()#getHealth() if it's not casted. And I already did Zombie check earlier

[tall dragon]

firstly. you need to use the final damage. not this one. final damage is with armor/modifier calculations this one is without

and i would do it exactly as i said victimHealth - final damage <= 0

[severe marsh]

ait, thanks

[native ruin]

change ur if then

[summer agate]

This is because not all entities have health btw (arrows, experience orbs). An entity with health is a LivingEntity

[naive loom]

        int entityId = player.getEntityId();

        PacketPlayOutEntityDestroy destroyPacket = new PacketPlayOutEntityDestroy(entityId);
        EntityCreature creature = null;
        WorldServer ws = ((CraftWorld) player.getWorld()).getHandle();

        String kitName = kit.name().toLowerCase();
        switch (kitName) {
            case "creeper" -> creature = new EntityCreeper(EntityTypes.q, ws);
            case "enderman" -> creature = new EntityEnderman(EntityTypes.y, ws);
            case "snowgolem" -> creature = new EntitySnowman(EntityTypes.aI, ws);
            case "chicken" -> creature = new EntityChicken(EntityTypes.n, ws);
        }

        player.setMetadata("spleef-kit", new FixedMetadataValue(spleef, kitName));

        assert creature != null;
        PacketPlayOutSpawnEntity spawnPacket = new PacketPlayOutSpawnEntity(creature);
        try {
            // c field

            Field entityIdField = spawnPacket.getClass().getDeclaredField("c");
            entityIdField.setAccessible(true);
            entityIdField.set(spawnPacket, entityId);
        } catch (NoSuchFieldException | IllegalAccessException e) {
            e.printStackTrace();
        }

        Bukkit.getLogger().info("A little bit of magic for these dumb ass packets!");
        Bukkit.getLogger().info("Player Entity Id = " + entityId);
        Bukkit.getLogger().info("Spawn Packet Entity Id = " + spawnPacket.b());

        for(Player onlinePlayer : Bukkit.getOnlinePlayers()) {
            CraftPlayer craftPlayer = (CraftPlayer) onlinePlayer;
            EntityPlayer entityPlayer = craftPlayer.getHandle();

            entityPlayer.b.a(destroyPacket);
            entityPlayer.b.a(spawnPacket);
        }

Could someone shine some insight on why this isn't working. (Isn't working by I cannot see my own skin, and can't move after these packets are sent)

[peak depot]

?paste

[undone axle]

https://paste.md-5.net/

[peak depot]

Hey im trying to create a chest after a players death it spawns the chest but It throws me an error

Error: https://paste.md-5.net/vetiqadute.bash
Code: https://paste.md-5.net/jacegexiwi.java

[river oracle]

asynchronous access

shouldn't be doing what your doing async

[peak depot]

let me try

[river oracle]

you can only read data async

generally thats the rule with spigot api

writing is not really going to possible on 99% of the api asynchronously

[peak depot]

works thanks

[hazy parrot]

You tested that pretty fast ngl

[river oracle]

he has super powers

i need that work flow though tell me

[peak depot]

I just replaced runTaskLaterAsynchronously with runTaskLater compiled put on server reload /debug (start the game) get some items 2nd account killed me looked in chest and done

1min job

[river oracle]

💀 you are just productive

[peak depot]

well gota get the plugin finish someday

[stone dust]

How
Do
You
Fix
Null Pointer Exception
???

Im sooo tired of searching the web for answers of how i can fix this problem, and i guess you guys fix it in your sleep (or just doesnt do it)

I have a List which i want accessible from another class, but im getting a null pointer exception.

"Code:"
public List<String> onCooldown = new ArrayList<>();

[rotund ravine]

Why?

[hazy parrot]

How do you access it in another class

[peak depot]

are you getting it with just doing YourClass yourClass = new YourClass or are you doing it with an instance of the class in the main?

[rotund ravine]

Pass it somewhere.

[tardy delta]

?di

[undone axle]

Guide to dependency injection: https://www.spigotmc.org/wiki/using-dependency-injection/

[tardy delta]

probably want to have an object wrapping that collection with appropriate methods for crud operations tho

[rotund ravine]

Why

[tardy delta]

because passing mutable collections around goes brr

[stone dust]

Wait, do you have a pastebin?

?pastebin

[tardy delta]

youll ever fuck it up

[peak depot]

?paste

[undone axle]

https://paste.md-5.net/

[rotund ravine]

He’ll most likely access it singlethreaded either way. Mutable != evil.

[tardy delta]

wrapping logic with your object would be much cleaner

[stone dust]

https://paste.md-5.net/tuxiwacaxe.java

[rotund ravine]

Depends on his usage of said object.

[tardy delta]

this can be refactored to if plugin.collection.remove()

if it will remove it and return true if it was able too

[stone dust]

Like so

[rotund ravine]

No

It returns true if he was removed

Not added

[tardy delta]

you were using t as param before

if (plugin.selectedPlayers.contains(t)) {
                plugin.selectedPlayers.remove(t);```
=>

if (plugin.selectedPlayers.remove(t)) {}```

[sterile token]

That why getter and setter exists!

selectedPlayers must be used only for field or variables declarations

That its speciifed on Chapter 6, article 1 of Java programming book, "Conventions"

[rotund ravine]

He’s talking about getters and setters for variables. Encapsulation

[tardy delta]

getters exist for a reason yes

[sterile token]

Yeah, you should be using encapsulation instead of working directly over the things

[stone dust]

I dont really care if my code is messy. It will probably only be used once, so idc how it looks like :P

[sterile token]

Must care about it

Code messy == hard understand when needing to fix up issues, not even talking it about scalability terms

[stone dust]

Yea, but i understand it better the way it is, plus that wasnt even the thing i had a problem with

[rotund ravine]

One thing i learned about spigot is it’s pointless to point anything out.

I don’t see you using your field in your code @stone dust so please point to where the error occurs

With a stacktrace and the updated code.

[sterile token]

Yeah that its called basically

?ask

[undone axle]

If you have a question, please just ask it. Don't look for staff or topic experts. Don't ask to ask or ask if people are awake or available. Just ask the question to the channel straight out, and wait patiently for a reply. Make sure you use the right channel regarding the topic of your question. Create a thread in case the channel is already in use!

[sterile token]

Learn how to ask about code

Not wondering to sound rude, but doesnt make sense asking for help without explaning the problem itself "just sayin doesnt work" and not sending any code/code "not working" ho you call it

[rotund ravine]

He did send code and said his problem

[sterile token]

So what are u talking about?

If you wont help dont do it

Its simply

Dont disturb on the channel saying not necessary things

🤔🤪

[rotund ravine]

Stop being weird.

I literally asked him for further information so i could help him properly.

[rotund ravine]

M

[torn badge]

Dude Verano chill

[rotund ravine]

M

[sterile token]

Yeah sorry i really having diff days and stress with fkg obligatory exams 😬

[rotund ravine]

Please provide the stacktrace and the code in which you use the variable. @stone dust just ignore the others.

[stone dust]

The error occurs where it searches if selectedPlayers has p (Line 32 in the pastebin)
And here is the stacktrace: Caused by: java.lang.NullPointerException: Cannot invoke "java.util.List.contains(Object)" because "this.plugin.selectedPlayers" is null at live.supeer.twitchplugin.TwitchCommands.onCommand(TwitchCommands.java:31) ~[twitchplugin-1.0-SNAPSHOT.jar:?] at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?] ... 23 more

[tardy delta]

that list is null

[sterile token]

Please follow ?conventions

[stone dust]

?conventions

[undone axle]

https://www.oracle.com/java/technologies/javase/codeconventions-namingconventions.html

[sterile token]

You should use a getter

I mean it is part of Chapter 6, Article 1 "Conventions" of the book of basic fundamentals and advanced programming for Java

[tardy delta]

noone knows what book youre talking about 💀

[echo basalt]

💀

[rotund ravine]

The variable should not be null. @stone dust

[echo basalt]

Just follow the 4 principles of OOP + java naming conventions

[rotund ravine]

Are you setting it somewhere?

[echo basalt]

and proper design patterns like Dependency Injection & Dependency Inversion

Might as well apply SOLID principles

[glossy venture]

bro verano in this case it really doesnt matter, its not professional production code

[echo basalt]

and while you're at it, use JNI to achieve better performance by writing your code in c++

[sterile token]

Yeah what i was trying to tell him, basing on the book i bought

[tardy delta]

never heard of dependency inversion lol

[glossy venture]

jni calls are slower right

[torn badge]

And actually you should start writing in Assembly after your first plugin

[echo basalt]

yeah

actuall

y

[stone dust]

By setting, do you mean the value, or the List?

[tardy delta]

actually bytecode

[echo basalt]

make it with something more native to minecraft - redsotne