help-development

[golden turret]

tried this but did not worked

[sterile token]

Why using Socket?

[golden turret]

using sockets

[sterile token]

Use google http client

Dont complicate your life

[golden turret]

if i wanted a lib

i would use

[paper zealot]

i asked

[sterile token]

Be patient

?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!

[paper zealot]

i asked

ok

[fierce salmon]

yeah guys verano is working hard to make us all happy /s

[paper zealot]

ok

[low temple]

Yeah not sure, havent seen an error like that before

[next stratus]

echo %JAVA_HOME%and post results please

[paper zealot]

ok

[paper zealot]

C:\Users\Lieonel>echo %JAVA_HOME%
%JAVA_HOME%

okeh

[quaint mantle]

some guy answered with: "Your config has a custom object without the type being specified" but what the actual fuck is that supoosed to mean????

[next stratus]

Is that what it resulted with? Can you show a screenshot?

[quaint mantle]

bruh

wroong reply

jesus i hate discord

[paper zealot]

y prank

@next stratus

[next stratus]

You've not set your java home correctly

[paper zealot]

no

how

y?

[sterile token]

Why is he having that issue? I never had to setup Java_Home for using an IDE on Linux

[quaint mantle]

Your config has a custom object without the type being specified - what does this mean

please

[next stratus]

https://www.ibm.com/docs/en/b2b-integrator/5.2?topic=installation-setting-java-variables-in-windows

[sterile token]

DevBukkit?

[next stratus]

It's a Windows thing

[sterile token]

Linux*

I hate windows

[next stratus]

No, the issue is a windows thing

[sterile token]

He is having issue on windos right?¡

[next stratus]

Yes..

[sterile token]

Ah that why lmao

[next stratus]

The java home thing is a issue on Windows....

[sterile token]

I see the console and thought he was on Linux

[fierce salmon]

What does the String part mean?

[next stratus]

Nah, it'll be terminal if it was Linux

[quaint mantle]

soldier

[ivory sleet]

Java isn’t useless still

[sterile token]

Best language for learning would be Python

[ivory sleet]

Nah

I mean sure kotlin looks great

But it has a lot of pitfalls also

Why?

[quaint mantle]

yeah when i am done this plugin i am never looking at java again, so many terms you need to know, the dumbass CoNvEntIons, people explain error solutions with a bunch of gibberish terms. there is nothing motivating me to learn this "language".

[ivory sleet]

The only real problem with Java is nullability and type erasure

[paper zealot]

still the sae

[brave sparrow]

Java is not dying lmfao

[sterile token]

One of best minecraft developer for servers told me that. His custom license panel for java app is design there and have never been cracked their license. And the jars never got deobfuscated. Cuz he use a +$512 dollars obfuscator. hahaha

[paper zealot]

same

[fierce salmon]

it says that I am supposed to input a char sequence

[next stratus]

What have you done to try fix it

[brave sparrow]

your inability to understand a language does not make it a bad language, it makes you bad at that language

[paper zealot]

i add JAVA_HOME

[fervent robin]

player.getdisplayname

[brave sparrow]

only a poor craftsman blames his tools

[sterile token]

oh sorry. But learn java i dont wanna be rude

[paper zealot]

to user variables

[next stratus]

And you refreshed it?

[ivory sleet]

Yea Java and its enterpriseness is actually a really good thing that has been evolved

[paper zealot]

ya

[fierce salmon]

You already said that once 😐

[quaint mantle]

not once in that message did i say it was bad, even though i feel it is, i said what i hate about it.

[next stratus]

Try rebooting your pc if needed

[sterile token]

I dont wanna sound rude. But im getting mad

[brave sparrow]

Java is fast, it's powerful, and it has very wide adoption, it isn't going anywhere

[fierce salmon]

I am not talking to you so why would you be getting mad

[paper zealot]

you sus

[ivory sleet]

I mean almost every language has conventions Magnumsrt

And in fact a lot of modern languages incorporate terms Java hasn’t even touched

[brave sparrow]

your use of "language" suggests that you're saying it's bad

[next stratus]

I'm trying to help you

[sterile token]

Python or javascript?

[paper zealot]

okeh

[next stratus]

Rebooting your pc will load in the new system variables.

[ivory sleet]

Learn Scala then

[sterile token]

oh never heard it

[brave sparrow]

Java is still widely used in backend web development, the two aren't mutually exclusive

[quaint mantle]

well yeah but in java people get mad that you didnt lowercase the first letter of a variable and it's so fucking stupid

[sterile token]

I only know that website backends, where Php, Python and JavaScript

[quaint mantle]

like it has no functional value

[brave sparrow]

Java web servers are incredibly performant

[quaint mantle]

and if i did that is my opinion

[sterile token]

Which one? Serverlet? Spring-Boot?

[brave sparrow]

you'll find people have that opinion in many languages

[ivory sleet]

You’re generalizing a collective now, I am pretty sure not everyone gets mad over that, and well you still have conventions in almost every other language needless to say

[paper zealot]

done

[ivory sleet]

Even in maths, or in any normal language such as English

[brave sparrow]

and i'm telling you that that's a dumb opinion, which is what i said i was doing from the beginning

[paper zealot]

now it say

[sterile token]

I have raged and break one keyboard because i lost 4 hours of work cuz intellij auto-save was not working

[brave sparrow]

you'd be surprised

[ivory sleet]

Java is also really fast

[brave sparrow]

Java is crazy fast these days

[next stratus]

I think there's another folder within it you need to point to is it lib? I can't remember try googling it

[sterile token]

And i dont tell you how many times raged when playing bedwars

[ivory sleet]

Yeah, and the difference is negligible

[paper zealot]

bin i thonk

[brave sparrow]

ActiveJ, Rapidoid, Jetty, Jooby, etc

[valid solstice]

What is the best way to make a player undergo the spinning riptide trident animaton?

[ivory sleet]

Over and above all, if you really need a low level language you probably wouldn’t go with golang, moreover rust would be what you’re looking for

[brave sparrow]

then why even bring up speed?

[ivory sleet]

Go eliminates too much verbosity imho

Like most other “modern” programming languages

[brave sparrow]

if you just like Go better that's fine, but that doesn't mean the industry as a whole is going to agree

[sterile token]

What would be better Vue.js? Next.js? Python? for backend dev (website)

[brave sparrow]

.

[ivory sleet]

Vue is frontend

[sterile token]

My bad

[ivory sleet]

But vue is nice

I suggest trying different backend and frontend frameworks to find out which one you favor the most

[sterile token]

I need to chose a powefull and good language for doing website

Im between Python and Javascript

[brave sparrow]

the real answer is that the framework and language you're going to use is whatever the person paying you says you're going to use

lmao

[sterile token]

#translator moment

[ivory sleet]

Yeah Alex, but that’s what’s nice about personal projects, you can choose and reconfigure at any moment

[fervent robin]

js is better

[ivory sleet]

Learn Python

[brave sparrow]

?

[ivory sleet]

It’s incredibly powerful in spite of it being somewhat slow

[fervent robin]

true

[brave sparrow]

I haven't had personal project time in a looooong time

[fervent robin]

but js is nice for websites and api's

[ivory sleet]

🥲

[sterile token]

Many people told me that forget getting a good job with php, so i thinked about Js and Python

That why im asking

[ivory sleet]

You probably wanna learn TypeScript over JavaScript, and then Python as its quite popular

[brave sparrow]

Personal project time has to come after my actual work obligations, so I don't have any time to expend on that at the moment

[fervent robin]

easiest way to learn js is just memorize every line of the docs for it 🤷‍♂️

[brave sparrow]

if I have a content update needing work I can't just tell my boss "hey im taking a week to dabble" lol

[quaint mantle]

i listed points why i think it is bad, i guess java's weakest point is the terms that beginners are just "supposed to understand" and i don't have "an inability to understand it" in fact i know the language decently, but it's just so unenjoyable to sit in front of a screen and get error after error. i am really considering stopping my plugin since mojang decided to go with java when something like c++ exist, ig thats what bedrocks for

[brave sparrow]

that's not a feature of the language, that's true in any language community

Spigot is an advanced API, it's not intended for beginners

[quaint mantle]

anyway i am not gonna argue i am just fucking annoyed that my plugin that i have spent a month on won't even save items

[ivory sleet]

Tbf, to learn anything you have to oversimplify before diving into the rabbit hole

[brave sparrow]

the only time I handhold somebody through programming is when a university is paying me to do so

[ivory sleet]

So the “supposed to understand” can to some degree make sense

[brave sparrow]

and if you think Java errors are bad, please try c++

you just get a number

lmao

[ivory sleet]

Hehe

[dusk flicker]

java errors arent bad at all

they can be overwelming

[brave sparrow]

Java errors are incredibly informative

I love it

[dusk flicker]

but they are really nice compared to others

[brave sparrow]

I can look at an error and figure out exactly what is wrong, and where it's wrong

[ivory sleet]

That’s besides the point I’d say

[brave sparrow]

whereas with C++ it's a case of "oh look, something's fucked"

[coarse crow]

^

[brave sparrow]

"Now to look at all my code line by line for an hour and figure out what the issue is"

[patent horizon]

        for (UUID uuid : gInter.members) {
            if (Bukkit.getOfflinePlayer(uuid) instanceof Player player) player.sendMessage(u.f(message));
        }``` would removing the .getPlayer() not work conclure?

[sterile token]

c++ shit language for people that dont like any language beside typed ones

[ivory sleet]

Wally I am unsure

[brave sparrow]

i don't hate c++

[ivory sleet]

I don’t remember the implementation

[brave sparrow]

i can be productive with it, but Java will always be my favorite

[quaint mantle]

dude, i'm not saying it is, i'm saying that if someone asks what passing an instance is, you don't say "well that is a basic of java" or "well you take a TYPE and make a method and then return the type" like a beginner is not gonna know what that a return or method is and i'm not saying spigot should make it beginner friendly, just the way people answer my and other beginners questions makes me wanna explode.

[ivory sleet]

But using OfflinePlayer::getPlayer returns a player object if the player is online (specified by the docs also)

[brave sparrow]

because spigot development is not intended for beginners

[patent horizon]

ah yeah looks like it worked

[brave sparrow]

that's like asking someone how to write a concurrent webserver in c++ and not understanding the basics of the language

[ivory sleet]

Yeah, well maybe learning the fundamental basics of Java would be a better initialization then?

[brave sparrow]

you don't understand the language at a level high enough for me to even explain to you what you want to do without writing out every step

and i'm just not going to do that

programming requires some self-starting

you should understand the basics of the language before you try and play with all the advanced toys

you wouldn't walk into a Calc II class and ask the teacher to write out all the steps for basic algebra, the same applies here

[quaint mantle]

well i have spent a month of my life on a fucking menu plugin that won't even work, i guess i was a bit stupid but fuck this is annoying like i am red in the face right now

sorry for the dumb statements tho

[brave sparrow]

i guarantee if you just took even a few hours and watched a beginner java tutorial you'd be at a level where someone in here could actually help you

[dusk flicker]

depends what tutorial

but yes

[brave sparrow]

fair

😂

I'll tell you what my professor always tells students struggling in his class: "If programming was easy, everybody would do it, and then you wouldn't be making so much money"

he has far more patience than i do

lol

oh absolutely it is

i just don't think all the people he says that to will make money

some people will never be good at it lol

yep

[ivory sleet]

Magnumsrt I very well know what you mean by your arguments, it usually becomes this awkward case where some beginner is asking a lot of questions that really wouldn’t be asked if the user would have done their homework. It appears as quite toxic when you get thrown “oh learn this before doing that” but in reality people tell you that because it’s the best way for you to actually teach yourself and learn what you need to learn. I guess some people are being mean about it, but generally we tell beginners this because knowing the basics first is truly crucial. It helps you not to shoot yourself in the foot all the time and it saves others time.

[sterile token]

Who mentioned was using a custom Http request system?

[brave sparrow]

when I was 13 Algebra 2 was "advanced math", now I'm sitting in groups and rings proving that 3^-1 = 7 in U(20)

[sterile token]

Do you rember who was using a custom htto library?

Wasnt something like Ara4n?

the simbol before 3

that small coma

That one

[brave sparrow]

watch this madness:

U(20) is the group of integers under multiplication mod 20

the identity for that group is 1

[ivory sleet]

Oh you’re doing group theory?

[brave sparrow]

3 * 7 = 21

21 mod 20 = 1

so 3 * 7 produce the identity for the group

therefore 7 is the inverse of 3 in that group

isn't that horrifying?

[ivory sleet]

Sounds illogical if you don’t know what a group is and all that

😅

[brave sparrow]

groups and rings yeah

[quaint mantle]

https://paste.md-5.net/yukihocayo.bash anyway back to what this channel is actually about, how would i fix this error

code: https://paste.md-5.net/axuqasigom.java

[river oracle]

java.lang.IllegalArgumentException: Args doesn't contain type key ('==')

[quaint mantle]

thank you captain obvious

[brave sparrow]

https://bukkit.org/threads/deserialize-itemmeta.128137/#post-1544106

[ivory sleet]

I am still extremely confused

[brave sparrow]

@quaint mantle

[ivory sleet]

Like why are you combining the spigot serialization api with Gson serialization

[brave sparrow]

I knew that was too specific of an error to be anything but spigot/bukkit

lol

[ivory sleet]

🥲

[quaint mantle]

so where do i type ==

sorry i am dumb

[brave sparrow]

you put that into the hashmap

with "==" being the key

and the type of the thing being deserialized as the value

the reason this part seems unintuitive is that this is an internal part of craftbukkit and wasn't intended for people to be using manually if i'm reading this correctly

[golden turret]

this is giving me an invalid http response

how can i fix this

[brave sparrow]

show us the error

[fickle ivy]

.

.

[golden turret]

invalid http response

[brave sparrow]

the actual error

[golden turret]

that but with _

i fixed it btw

i just needed more \r\n

[brave sparrow]

ok

[wet breach]

this would be correct and is also how mc serializes items

wasn't originally intended for people to use, but people always insist on using things they are not supposed to 😛

[paper zealot]

?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.

[sterile token]

Lovely shit, intellij its getting more bugs than mi life

I first get bug my projects, now i have bug the dependencies

I restarted linux, invalidate cache, nothing works

Only problems cause :/

I wanna rage LMAOO

[paper zealot]

ok

ok

[sterile token]

This are the moments when i wanna break my keyword

[paper zealot]

ok

[valid solstice]

Hi, anybody know what should be the value for Damegable#setDamage() for a leather leggings to get the same durability as Netherite leggings?

i tried 555 (as indicated in the wiki as the durability of netherite leggings) but it gets broken in 1 shot

[sterile token]

Isnt setDamage deprecated on newers versions?

[loud haven]

setDamage just set how much damage the item has taken; it doesn't change the item's max durability.

[valid solstice]

oh.

is there a way to change the max durability?

[valid solstice]

I'm not sure, im using intellij so its supposed to show a strikethrough text if its deprecated

[hexed hatch]

Nope.

[sterile token]

Changing item properties?

Via reflections?

[hexed hatch]

That said: if you set the damage to a negative value, it will increment as normal

Not even with reflections

[sterile token]

Oh

And what about my problem with bugged intellij?

Im nearly to rage again 😡

[hexed hatch]

It just won’t show the bar until the negative values become positive

So it’s kind of a yucky solution

[patent horizon]

what do i have to change in my gradle spigot links to go from the api to the full server

[valid solstice]

thats a good solution

[hexed hatch]

When it comes to custom durability, I like to throw a PDC on the item, listen to damage events and such, and display the fraction basically

[sterile token]

You cannot use Spigot-jar from remote repo, just the api

[hexed hatch]

The bar won’t show up until the negatives become positive

[patent horizon]

what

no like

[valid solstice]

Itemstack#setDurability could work? (but its deprecated)

[patent horizon]

in maven, you just change spigot-api to spigot to use nms and whatnot, what is the equivalent for gradle?

[hexed hatch]

Cast the meta to damageable, and you’ll be using setDamage

[valid solstice]

i see.

so for leather leggings, to make it have the durability of netherite, im going to do setDamage(-555)?

[hexed hatch]

That should work

[sterile token]

In gradle you have the Spigot-Api and for using NMS, you have to install the Spigot-Jar via buildtools

[valid solstice]

thanks

[hexed hatch]

That said: I only know negative damage values work because I’ve messed with it with vanilla commands

[sterile token]

And what about intellij bugs?

[hexed hatch]

Not sure if Spigot is going to throw you an exception for trying to make it negative

[valid solstice]

i hope it does work

[hexed hatch]

I’m the last person to ask about Intellij issues

[sterile token]

Oh my bad

I prob will have to ask another

Thanks!

[hexed hatch]

I just throw google at my intellij issues until intellij does the thing

[hybrid spoke]

what do you need verano

[sterile token]

Im having this issue on top

[sterile token]

a

Idk what happening, i invalidate chace, reload files from disk, restarted linux

Nothing works

[patent horizon]

yeah i already got buildtools but what do i put in the build.gradle for my plugin?

[hybrid spoke]

did you try to delete the lombok folder in your maven folder and reinstall?

[sterile token]

Have you install the Spigot-Jar using build tools?

[hybrid spoke]

otherwise try to force it

[sterile token]

Oh i will try that

Thanks

You always keep me alive

[hybrid spoke]

thats what god is for

[hexed hatch]

Let me know if it throws an exception or not, I’m quite curious about whether that works

[sterile token]

Do you know about maven? (Personal question)

[hybrid spoke]

depends on what you need

[sterile token]

No just to know, if you know how maven works

The repo let say

I have been told its a simple web-server which has a straight parameter url and that all. Do you agree?

[hybrid spoke]

more or less. just stuff i personally needed

[sterile token]

Because my plains for first week of vacations its to make my own maven repo system

[hybrid spoke]

i would not say that maven is a "simple web-server"

[sterile token]

Oh

I have seen that many of them are just a simple webserver that serve the files

And people told me that

It didnt work the maven thing

I dk what happening

[hybrid spoke]

https://maven.apache.org/guides/getting-started/index.html#What_is_Maven

so delete the lombok-dependency folder out of your maven folder

then invalidate caches

and try to force install it

[sterile token]

Oh ok

Thanks

I will try

Can be caused by the project itself?

Cuz i have another module using lombok and works without problems

BTww

[hybrid spoke]

hm, did you reload your maven?

[sterile token]

Yes

Its a multi module project, im every module lombok works, but on the new module doesnt work

Idk what happening

[mighty bane]

Okay so does anyone know how to get written book pages to work? Cause we're trying to program a custom craftable book however whenever we open the book. It always says * Invalid Book Tag *
Does anyone know how to fix this?

[dusk flicker]

can you send the pom of the new module? Havent been paying attention to the convo, so lmk if I miss/repeat somethin

[hexed hatch]

code

[mighty bane]

Code?

[dusk flicker]

send code

[hexed hatch]

send code

[mighty bane]

Ah okay.

[hexed hatch]

have you tried restarting intellij?

[sterile token]

Everything, i done linux reboot and nothing

[dusk flicker]

what is exactly not working?

[hexed hatch]

that has fixed about 63% of my intellij issues

[sterile token]

Lombok dependency

[dusk flicker]

How is it not working

[mighty bane]

Okay, here it is.

[sterile token]

here

[sterile token]

s

[dusk flicker]

not sure why you are doing that in ur onenable

[hexed hatch]

ok so

you need to set up the pages before you build the recipe

so just throw that whole "set up the book" part above creating the recipe

[mighty bane]

Okay

[hexed hatch]

or really you need to put that inside there before you apply the meta

what needs to happen is this in this order:

• create book
• get book meta
• apply pages to book meta
• apply meta to itemstack
• create recipe

[mighty bane]

Okay

We'll try that.

Hopefully it works.

Time to wait five years for the launcher to finish updating

[sterile token]

Not working

I cannot find the solution

I tried everything

Lmao it 1000k time i count to 10 until i broke my keyboard

I hate this shit problems

This problems make me loose money 😡😡

[dusk flicker]

then dont use lombok

like, its not the biggest thing

[sterile token]

It doesnt work with any depenency

I make another project and no depencies working

[dusk flicker]

something is fucked on your side then

[sterile token]

Maven prob?

[dusk flicker]

prob, considering it is related to dependencies

[sterile token]

It worked

5th i have rebooted

And work, as agent one said reloading/rebooting always works

[delicate lynx]

intellji decides on boot if it wants to work today

it has a random chance to not work and randomly break some function of the program

[sterile token]

Yeah

Idk what happening

[warm trout]

Is there a way to get the Visible name of an ItemStack? And I don't really mean the display name because if the name is not modified the display name returns null. For example, birch leaves would say Birch Leaves and a stone block would say Stone Block would say Stone Block. How would I get that name?

[sterile token]

Any good class for simple reflections?

[mighty bane]

Okay so we did that, and it still says invalid book tag.

So... what else could be causing the error?

[sterile token]

With pantient you fix everything

I said it because i was annoying with an inssue and i stay quiet and calm down and fiex the issue

[fossil lily]

Alright, im brand new at this so dont get mad at me. (Please)

How can I make it so the player is set to the player running the command? Ive looked all over google and I cant figure it out :(.

[sterile token]

Using Player object

[sterile token]

You should first check that the Sender is Player instanceof sender, and then cast sender to player object

[fossil lily]

👍

Thanks

[sterile token]

Also, if you are new you can read the javadocs

?jd

[undone axle]

Spigot: https://hub.spigotmc.org/javadocs/spigot
BungeeCord: https://ci.md-5.net/job/BungeeCord/ws/api/target/apidocs/index.html
BungeeCord Chat: https://javadoc.io/doc/net.md-5/bungeecord-chat/latest/index.html

[fossil lily]

:D

[sterile token]

And yeah i would recommend before starting with spigot api, learning the basics about Java

[fossil lily]

I went through a crash course, I might need a little bit more. The whole object oriented thing is confusing me D:

[sterile token]

prob you are comming from not a non object oriented language

[fossil lily]

yea

[sterile token]

Which one?

[fossil lily]

Python

[sterile token]

If i can know

Oh yeah

I know it (the basics)

[fossil lily]

the beginner language

[wet breach]

Player player;
if(sender instanceof Player) {
    player = (Player) sender;
}

my one free spoon feed for the month

[sterile token]

This is what i told you in different words. if you didnt understand there you have an example

[brave sparrow]

I swear Java supports naming the variable in the instanceof now

[fossil lily]

amazing

[brave sparrow]

if (sender instanceof Player player)

[wet breach]

it might, I haven't taken the time to really dive into updated versions of Java

[sterile token]

Player player = (Player) sender;

[wet breach]

since you know its been relatively the same for quite some time lol

[brave sparrow]

Actually I know I’ve done that so yeah new Java does allow it

[sterile token]

Any good class for reflections?

[wet breach]

you mean tutorials?

[warm trout]

Think he means a util

[wet breach]

best way to learn reflection is just to actually do it on a random plugin

[sterile token]

Yeah

Im creating my simple class for reflections

So i want to see some examples

[wet breach]

Oh I don't know of any utils off hand to help with it

I don't usually require its use

[mighty bane]

Okay, so we tried implementing the suggested fix, but the book still keeps saying * Invalid book tag *.
At this point, we have absolutely no clue what to do.

[dawn hazel]

anyone know how to "disable" a bungeecord plugin? getpluginmanager() on bungee doesnt have a disableplugin method

[sterile token]

Tecnically you wouldnt be able to do it

But you can do it via reflections

[dawn hazel]

clarification?

[sterile token]

Yeah have you seen how Plugman disable plugins?

[dawn hazel]

yeah

kinda

[sterile token]

I recommend using a plugin from Spigotmc

So you can see the code

[dry forum]

would it be possible to "force" a player to take a screenshot or somehow take a screenshot at a location in a world then use the image so its uploaded/sent to the server?

[sterile token]

And try to understand

[sterile token]

Prob without custom client wouldnt be possible

[dry forum]

wdym custom client

[wet breach]

you can't force the client to do quite a bit of things

[sterile token]

A custom implementation, like a mod or client

[dry forum]

ah

[sterile token]

Big problem

Hahaha

What where you wondering to do?

[dry forum]

take a screenshot at a certain place in the world then upload it to the server so i can then send it to a discord

[wet breach]

what you could do

is get the view the player is looking at

and then take the screen shot server side

[brave sparrow]

That’s a lot more complicated

[dry forum]

i have an alt account if that helps

[brave sparrow]

The server doesn’t have the rendering or assets that the client has

[sterile token]

?

[brave sparrow]

You’d have to recreate all of that

[sterile token]

Wait a questions

Do you know how works hipixel recorder?

[dry forum]

ive seen a server do it with an invisible mc account facing the area with the photo

[wet breach]

they use a mini client

[sterile token]

I have seen they transform the vip games into a video

[brave sparrow]

You’ll need a mod to get that client to record

[dry forum]

ah

[sterile token]

And they dont ask for a custom mod or client

[brave sparrow]

There is no way to force a client to take a screenshot from the server

[dry forum]

can the server not take a screenshot at a location? doesnt need to be specificly a client can be anything

[brave sparrow]

No

The server doesn’t render the world graphically

[paper zealot]

i cant open spigot.jar

[mighty bane]

Hypixel most likely just records each server similarly to the replay mod.

[wet breach]

well technically it can, just need some client code and assets to make it possible

[brave sparrow]

Right

[mighty bane]

They probably have a custom client that records all of the chunks.

[sterile token]

But they dont use nothing on client side, i can play with wichever client and the games get saved

So i dont agree with you

[wet breach]

because it is done on the server

[brave sparrow]

@sterile token is it saved to a video or playable in-game

[wet breach]

you can have a plugin be a mini client

not saying it is something easy to do

[sterile token]

An ex developer told me that it saved into game and then they have the posibilities to transform it into a video

idk how

[wet breach]

there are different ways to do it

[fickle ivy]

how do I make it so chunks don't go to sleep if there is a hopper moving items? I keep having to go back and forth to get all my stuff to move to the end of the hopper line

[brave sparrow]

Yeah so presumably they save all the actions and then just render it

Like it is possible

It’s just a lot of work

[wet breach]

yep lots of work and lots of debugging

possibly some head banging too

[fickle ivy]

granted its a LONG hopper line. lol

[wet breach]

because you can't figure out how to go from an action to an mp4 container etc lmao

[wet breach]

if you are making a plugin it is a matter of listening for chunkunload events

and if it contains one of your hoppers, cancel the unloading

[sterile token]

Imagine just trying to replay custom sounds on minecraft its really difficult

[fickle ivy]

No plugin. Just on my server.

[sterile token]

Wha thappening?

[fickle ivy]

thought they werent supposed to go to sleep if there was hoppers moving stuff through

[sterile token]

For server support #help-server

[brave sparrow]

You basically just have to take all the user-facing stuff from the client and make it a task that outputs to video encoding

[fickle ivy]

oops. sorry. thought thats where i was

[brave sparrow]

Hoppers don’t keep chunks loaded

[wet breach]

chunks unload when players are not around unless something like a plugin keeps it loaded

[brave sparrow]

^

[wet breach]

which reminds me, I think I might update that wireless redstone plugin

now that its officially defunct

[mighty bane]

Has anybody else have any difficulty with books not working? Or is it just us?

[wet breach]

probably just you. You are trying to give a written book correct?

[mighty bane]

Yes.

It's meant to be a craftable item.

[wet breach]

You need to first make the book, and then seal it after you put what you want into to give it the author tag

[mighty bane]

What?

Isn't that what we did?

[sterile token]

You seem like a rusty tape recorder, saying that all the time

[wet breach]

lol

sometimes like right now I can't think of the proper word

[sterile token]

I have counted that message like 3-4 times

[mighty bane]

We made the book, added the pages, set author, then added crafting recipe. Exact order you stated.

[wet breach]

between the book types

[mighty bane]

We followed the exact order listed on reddit, youtube, and the forums. Even copied the code, and it still hates us.

[wet breach]

you created a written book instead of just a book. Written book is when it is finished/sealed with the author tag

[mighty bane]

That is what we want.

A written book containing certain information.

[wet breach]

ok, but written books can't be edited though, it has to be a book to edit it

[kind hatch]

Are you using Material.WRITTEN_BOOK?

[mighty bane]

Yes

[mighty bane]

To edit it in the code?

[kind hatch]

You need to use Material.WRITEABLE_BOOK instead.

[wet breach]

yes just like in the game, it is the same in code

[wet breach]

thank you, I couldn't remember that one

anyways, you need to use writeable book first

add your pages

then you can turn it into Written_Book which lets you add the author tag

[mighty bane]

If this works... we're going to throw something.

[mighty bane]

How do that?

[brave sparrow]

That seems incredibly strange if true

Sounds like someone screwed up when making the API

[wet breach]

Well, Mojang are notorious for strange things

[mighty bane]

And exactly opposite to most posts online.

[brave sparrow]

let me see how we do it and get back to you

[mighty bane]

It creates a writable book with meep...

Now how to convert it to written book?

[hexed hatch]

Can I see your code as it is now?

[brave sparrow]

yeah we definitely do not do it that way lol

[mighty bane]

Here is as a writable book

[wet breach]

well that is how I remember it needing being done, I could be outdated then and need to update my knowledge lmao

[kind hatch]

Two ways you can make a book.

ItemStack book = new ItemStack(Material.WRITTEN_BOOK);
BookMeta bookMeta = (BookMeta) book.getItemMeta();

BaseComponmenent[] page1 = new ComponentBuilder().append("Your Text Here").create();

bookMeta.spigot().addPage(page1);
bookMeta.setAuthor("The Author");
bookMeta.setTitle("Book Title");
book.setItemMeta(bookMeta);

ItemStack book = new ItemStack(Material.WRITTEN_BOOK);
BookMeta bookMeta = (BookMeta) book.getItemMeta();

bookMeta.addPage("Your Text", "Goes", "Here");

bookMeta.setAuthor("The Author");
bookMeta.setTitle("Book Title");
book.setItemMeta(bookMeta);

[mighty bane]

Second method failed for us.

[brave sparrow]

what minecraft version

[mighty bane]

1.18.1

[brave sparrow]

try the first method with the base components

[mighty bane]

Okay, it's throwing an error with the basecomponent.

[kind hatch]

You imported net.md_5.bungee.api.chat.BaseComponent correct?

[brave sparrow]

what's the error

[mighty bane]

Thanks

[brave sparrow]

i'm looking at the client code to see if I can spot something obvious

[mighty bane]

Nope, still doesn't recognize the basecomponent.

[brave sparrow]

show us the error

[mighty bane]

Oh... you mistyped basecomponent.

F

It's fixed.

[kind hatch]

Are you depending on the API then? BaseComponents have been in the API for a long time now.
How are you managing your dependencies? Also, what version are you trying to compile against?

[mighty bane]

It was just a misspelling.

[kind hatch]

😛

[mighty bane]

uh... what

[brave sparrow]

does it work now @mighty bane

[mighty bane]

Starting up the server.

[kind hatch]

Some people depend on the wrong jar file or use the wrong imports sometimes. Wanted to see if you did that by mistake.

[mighty bane]

Our computer did at one point swap to java 8. But we fixed that.

[mighty bane]

Yes.

[brave sparrow]

figured

lol

[mighty bane]

Why did our original code not work though?

[brave sparrow]

somebody probably broke something converting between String pages and BaseComponent pages

[mighty bane]

Okay

^W^ Thank you

The past two days have been a veritable headache.

[kind hatch]

I haven't ever used the method with strings, so I can't say for certain, but I would lean towards an issue with the API. I've always used BaseComponents when it comes to books as it's what the wiki recommended.

[mighty bane]

Now time to figure out how to run code in books when certain lines are clicked.

[brave sparrow]

base components

fortunately for you

lol

[mighty bane]

Something we're still learning how to do. But hey, it's why we started this project in the first place. To learn through practice.

[kind hatch]

I'd recommend reading the wiki page on them. There are more than just BaseComponents, but they are pretty flexible. Most projects can get by with just them.
https://www.spigotmc.org/wiki/the-chat-component-api/

[mighty bane]

Thanks

[brave sparrow]

yeah that's right, spigot doesn't call them all base components

that's just the easily memorable name lol

[mighty bane]

Okay

Although our brain hurts enough as is. Probably going to take a break for the day. Who knows? Maybe our wifi will finally stop messing with us tomorrow and we can actually watch youtube tutorials.

[silk mirage]

imagine watching tutorials

use pdfs

[mighty bane]

We do. We also learn best when hearing it said aloud with visuals to follow.

[muted brook]

Air bubbles as thirst bar

[silk mirage]

I agree, but I don't like to follow a whole tutorial. It just makes it more complicated.

[mighty bane]

We generally just load up a playlist of how certain things work, and let it play in the background. Skipping around whenever we need to.

[sterile token]

If anyone had a simple utility class for doing reflections le me know

Thanks

[waxen plinth]

What are you planning on using it for

[sterile token]

Getting the CommandMap

But i think i dont need it

its really clean

Adding a class for reflections would be to overload it

[young knoll]

I mean you’ll have to handle exceptions when you call those methods

[sterile token]

I know

[young knoll]

Also you should create a class extending PluginCommand rather than reflecting it

[sterile token]

Hmn why?

Why extra clases?

[young knoll]

Better than janky reflection

[sterile token]

Oh ok

[waxen plinth]

How does this prevent the need for reflection?

[young knoll]

Because the constructor of PluginCommand is protected

But you can make the constructor in your subclass public

[waxen plinth]

Right but how do you register it

[young knoll]

You still need to reflect the command map

[waxen plinth]

Okay

[young knoll]

It’s less reflection

But still reflection

[sterile token]

Lmao

Im fascinated with builders HAHAH

Command test = Command.builder().name("Test").aliases(Arrays.asList("test", "testCMD")).permission("command.test").description("Test command").executor(new TestCommand()).build();

🤔

[waxen plinth]

Why would you even do Arrays.asList

Why not just take a String... for aliases

Then you could do .aliases("test", "testCMD")

Honestly though I find builder-style command libraries to be the least enjoyable to work with

[young knoll]

Var args are fun

[waxen plinth]

They are

[young knoll]

It’s funny looking at some older java libraries that were made before them though

Just a million overloaded methods each with one more parameter

[waxen plinth]

String str1
String str1, String str2
String str1, String str2, String str3

Ad nauseum

Sadly that's still what Map.of looks like because no tuples

[young knoll]

When do we get multiple varargs

String... Integer...

[waxen plinth]

Never, that would be bad

Tuples though

(K, V)... 🤤

[young knoll]

Just uhh

Pass an Object... and then combine them in the method

[waxen plinth]

cringe

[sterile token]

I dont like varargs

Because i need to lost strings (have extra strings of code)

Doing the anottation

[waxen plinth]

what

[young knoll]

You just aren’t ready for my genius

[waxen plinth]

Tuples are amazing and java should add them

[young knoll]

Tuples are like

A pair but without the need for a class

Right

[hardy swan]

tuples are just a set of attributes, but some languages treat it as a pair i think

[waxen plinth]

can be more than a pair

it has huge benefits

Java calls records "nominal tuples" but proper tuples would be much better

Object instantiation has a non-negligible overhead, whereas tuples can essentially be primitive

[young knoll]

So it’s an arbitrary length group of objects

[sterile token]

Yes

[waxen plinth]

Mhm

[hardy swan]

basically java expect you to create a class if you really need to enforce some kind of typing

don't see how they can be primitives

[waxen plinth]

Well we are getting value types soon™️

If you can make value records that would be incredible, they would basically be proper, effectively native tuples

[tranquil viper]

is there an event that listens for trident throw?

[waxen plinth]

ProjectileLaunchEvent most likely

[quaint mantle]

^^

[sweet pike]

i have made a plugin that basically allows you to spawn a mob that has an inventory with mob drops and whatnot, so instead of killing them, they'll drop loot depending on how happy they are (they have their own mood scale) and a few extra things.

when my plugin disables all the CadiaMobs which is the name of the object which contains the bukkit entity's UUID, get's written to a database, with one of the main columns being the entity's UUID.

when loading the plugin back up however, when iterating thru the MySQL uuid columns, the return of Bukkit.getEntity(uuid) is null no matter how much i delay that piece of code.

how can get the Entity object thru Bukkit.getEntity without it being null? i've tried loading the chunks before calling the getEntity method but it still returns null...

[amber vale]

How can I implement custom block breaking speed, e.g:

Changing the speed at which a block break?

[quiet ice]

I fear that that may be clientside

[visual tide]

uh

weellll

give em mining fatigue

and handle everything serveside

:))

a fricking nightmare to do

but powerful

https://www.spigotmc.org/threads/1-8-1-13-custom-block-breaking-change-block-hardness.362586/

is a neat guide

but you will need like a lil bit of experience in nms

[lost matrix]

This happens because the entitiy with that ID might be in an unloaded chunk.
You cant just expect that all the thousands of entities stored in the chunks are accessible at all times.
They get loaded when their chunk gets loaded.
So you need to listen for the ChunkLoadEvent, then get all entities from the loaded chunks and see
if one of them is a special one of your mobs. You need to also listen for the WorldLoadEvent and
when your plugin is enabled then you need to iterate over all the spawn chunks because no events are fired for them.

I think using a database was the worst possible approach here. PDC and chunk events are way more reliable.
A DB would only make sense if you wanted to access the entities from a website or some external service or
if the mobs would be shared between servers. But they are strongly bound to their chunk which makes using a PDC
the far superior solution.

[lost matrix]

I think this does no longer work as of now because mojang made the break animation for the players own damaged block client side.

[visual tide]

u can send custom break states

[lost matrix]

*Also spigot now has api methods for that

[visual tide]

ye well depends on version

did it for 1.8 once at its a freakin nightmare

[lost matrix]

But they are only valid for other players blocks. The own block animation is no longer server determined iirc

[lost matrix]

Everything for 1.8 is a nightmare...

[visual tide]

well

[visual tide]

but wouldnt that look the same on the client tho

if the server tells you someone else is breaking the block youre breaking but you cant actually make a dent yourself because slow digging

[lost matrix]

oh you are speaking of the hacky old way that uses slow digging...

[visual tide]

yes

i mean it works 🤷‍♀️

[lost matrix]

Problem is that it messes with guardians for example

[visual tide]

true but if you wanted it to work in a closed environment like "custom ore miningrealm" or smth it is still useful

[lost matrix]

Actually ill look into that. Maybe there is something in the protocol that could be exploited.

[sweet pike]

I agree that using a database is a bit redundant here, however using a PDC would mean that would need direct access to the special mob for retrieving their UUID, and then accessing the special mob data. my plugin makes it so mobs drop loot in their inventory (every 5-10 mins, controlled by a runnable), and to access this loot, players need to right click the entity

using a database means that I can consistently loop thru the UUID's, find the bukkit entity matching it, and then do my special mob stuff, but with a PDC, some sort of direct access would need to be establish (probably via event) correct?

[sharp flare]

Entity UUID changes every server restart

or the ID ig

[sweet pike]

this is not correct, i did some testing the UUID stays the same iirc

[sharp flare]

try #getEntityID

I onced made a staff that can move entities and store its id in the lore, once a server restart is initiated that ID is not the same as before so thats just what I experienced

in case of UUID, its diff ig

[lost matrix]

This is a very expensive approach. What you should do is add a timestamp when the mob gets unloaded and then when its loaded
again, calculate the delta time and compute the drops that the mob generated since that time.

Using a runnable for only the live mobs and computing the drops based on delta time when they are loaded is far more efficient.

Even a runnable for live mobs might be overkill depending on what you do. Just compute the drops when they are accessed.

[sweet pike]

hmm, thank you for the suggestion! i highly appreciate that and i will look into it

[sacred prairie]

how can i let the npc look at the player if the player is in a 8 block range. I use this code to look at the player:

    public void move(PlayerMoveEvent e) {

        
        Player player = e.getPlayer();
        NPC.getNPCs().stream()
        .forEach(npc ->{
            
            Location npcloc = npc.getBukkitEntity().getLocation();
            
            npcloc = npcloc.setDirection(player.getLocation().subtract(npcloc).toVector());
            PlayerConnection connection = ((CraftPlayer) player).getHandle().b;
            float yaw = npcloc.getYaw();
            float pitch = npcloc.getPitch();
            connection.sendPacket(new PacketPlayOutEntity.PacketPlayOutEntityLook(npc.getId(), (byte) ((yaw%360.)*256/360), (byte) ((pitch%360.)*256/360), false));
            connection.sendPacket(new PacketPlayOutEntityHeadRotation(npc, (byte) ((yaw%360.)*256/360)));
            
        });
        

    }```

[grim ice]

Don't make a packet each forEach

Make one packet, send it in forEach

[lost matrix]

This is an extremely expensive approach. You should not determine this in the PlayerMoveEvent. Also stream() and then using just forEach is unnecessary. Just use foreach directly.
For distance estimates you should def. use the distance squared instead of the distance because root math is also very expensive.
This method alone will lead to lag eventually.

[lost matrix]

Doesnt make much sense as he needs a separate packet for each npc...

[sacred prairie]

but how should i do that if i dont use the PlayerMoveEvent

[lost matrix]

You should use a runnable that determines the distance of the player to each npc which is in his world.
Make it evenly distributed. So not all players at once every 20 ticks. But some players every tick so that the time delta between two ticks
of the same player is 20 ticks. Then put those players which are near an npc in a Map<Player, List<NPC>>. From there on you can use the PlayerMoveEvent.

Section 3 of this thread explains how to do even distribution:
https://www.spigotmc.org/threads/guide-on-workload-distribution-or-how-to-handle-heavy-splittable-tasks.409003/

[sacred prairie]

i'll try this thank you

[quiet ice]

Another Thing to note is the dedicated Data structures can be used, unfortunately I forgot the Name of them

[young knoll]

Multi map?

[quiet ice]

Quadtrees and Octtrees

It only helps If the npcs are at the same position the entire time however. But it can reduce the costs of Iteration by a lot by Splitting down the npcs into batches

[grim ice]

uh

if im making a friends system

do I use a graph

[lost matrix]

Graph

[grim ice]

ok

but i dont really get how it works

[lost matrix]

Do you know how a LinkedList works?

Eh. You will get there. Plenty of tutorials out there 👍

[grim ice]

No

its like

a deque

i think?

but it allows null values

[ivory sleet]

Guava has graph data structures btw

[grim ice]

and slower than an arraydeque

thats mostly what i know

cant i just make something similar to

a hashmap of a uuid, arraylist<uuid>

[lost matrix]

Sure. But you will quickly realise what a hustle it is to maintain this properly.

[grim ice]

is it possible

to serialize it or something

[lost matrix]

Yes the structure you described can easily be serialized.

[grim ice]

cool

then what's the husle

hustle

You can use nio and distribute the work so it doesn't cost that much performance

[lost matrix]

?

[grim ice]

maybe it's laggy

[lost matrix]

bi directional references are hard to maintain

[lost matrix]

what exactly is laggy? The serialization?

[grim ice]

Yeah but nevermind

I guess its not laggy

What i was thinking is

writing on files might've been costy, but it probably isnt a lot of text

[lost matrix]

You should never do any IO on the main thread anyways. Doesnt matter if its 10ms or 100ms

[grim ice]

yea

i wouldnt

i would do it on an other thread and distribute it i assume

[lost matrix]

Nothing to distribute. Just do a fat single batch.

[grim ice]

o

so u can do whatever u want if its in a new thread

[lost matrix]

You wont get better writing performance with multiple threads. Your hard drive has a very limited throughput.

[grim ice]

but the thread resources will be taken from the system resources though

o

then do i just use nio

[lost matrix]

Sure. Whatever you fancy for writing files to disk.

[grim ice]

w h a t

[quiet ice]

Hm, what exactly do you want to serialize?

[grim ice]

HashMap<UUID, ArrayList<UUID>>

or is there another data structure that has better performance

[quiet ice]

Like mutual friend uuid <-> friend uuid pairs? Or is it asymetric?

[grim ice]

for this kind of thing

nah i want each player to have a list of players friended

[quiet ice]

You might want to go ConcurrentHashMap<UUID, ConcurrentHashMap.KeySet<UUID>>, but that may be overkill

[grim ice]

want to keep things simple

[grim ice]

o

why Concurrent

[quiet ice]

So asymetric? Then yes, Just go with Map<UUID, Set<UUID>>.

[quiet ice]

async saving

[grim ice]

Async saving?

you mean distributed, or multithreading, and what do you mean by async saving

[quiet ice]

Off-thread

My bad for using the really dum word

[grim ice]

"ConcurrentHashMap: It allows concurrent access to the map. Part of the map called Segment (internal data structure) is only getting locked while adding or updating the map. So ConcurrentHashMap allows concurrent threads to read the value without locking at all. This data structure was introduced to improve performance.Sep 6, 2016"

[quiet ice]

Sure, File IO is kinda fast these days, but if you have a lot of data, saving the database in an off-thread manner can save a small lagspike or two

[grim ice]

alr that made sense to me

[quiet ice]

This is just the tip of the iceberg

The actual cool thing that goes for CMH is that you can iterate over the keyset/entryset while modifying it

[grim ice]

wdym

[grim ice]

so the purpose of this, is to access it off thread safely, I see

but dont threads take some amount of resources?

running every small task in a new thread would make performance worse, or better?

[eternal oxide]

Depends

[quaint mantle]

thats why you use a thread pool

[grim ice]

Like Bukkit Scheduler?

and ExecutorService?

[lost matrix]

You can do that with a normal hashmap too

[quiet ice]

Map<Object, Integer> hashmap = new HashMap<>();
// Put some stuff in the map
for (Object key : hashmap.keySet()) {
    hashmap.put(key, 100); // ILLEGAL!
}
Map<Object, Integer> concurrentHashMap = new ConcurrentHashMap<>();
// Put some stuff in the map
for (Object key : concurrentHashMap.keySet()) {
    concurrentHashMap.put(key, 100); // LEGAL!
}

[grim ice]

what

thats illegal

how

what

[quiet ice]

ConcurrentModificationException

[grim ice]

ic

[quiet ice]

Well, it is illegal at runtime, you can fully compile that

[quiet ice]

yeah

[lost matrix]

    Map<String, Integer> stuff = new HashMap<>();
    stuff.put("1", 1);
    stuff.put("2", 3);
    stuff.put("3", 1);

    stuff.entrySet().removeIf(entry -> entry.getValue().equals(1));

If you use the iterator then you can also do that with a normal hashmap

[tardy delta]

Love that method

[quaint mantle]

Me2

[quiet ice]

That requires that the iterator removes it and not something in the background. But yes, this is a valid way of doing things like that

[grim ice]

but uh

can someone explain thread pools

I want to understand them more

I know they like help you manage your threads life cycle and stuff

but how

[lost matrix]

Its like every other object pool.
You have a bunch of threads.
If you need one then the pool gives you a random free one.
Thread creation can be expensive. Objects with expensive
creation methods get pooled.

[grim ice]

so it doesnt exit the thread??

[lost matrix]

And you dont need to manually go through all the threads to see which one is free right now because the pool gives you one.

[grim ice]

how does it give me a free one, doesnt it eliminate free ones

[lost matrix]

No. If all threads are occupied then you get a random one and your execution might need to wait until the previous workload is done.

[quiet ice]

it parks it to some degree

sun.misc.Unsafe ftw

[grim ice]

so does it exit free threads

[grim ice]

so it has a fixed amount of threads,

[quiet ice]

It probably parks them via the unsafe class

[grim ice]

what is parking

[lost matrix]

Thread pools are used for threads that have short lifetimes.
For example -> you give it a task like calculate 1000 fibonacci numbers. After the thread is done, its parked for the next task.
Or "write xyz to disk". You dont occupy threads from a thread pool for tasks that have a non deterministic lifetime.
For that you would create a single thread.

[quiet ice]

https://hg.openjdk.java.net/jdk8/jdk8/jdk/file/687fd7c7986d/src/share/classes/sun/misc/Unsafe.java#l995

[grim ice]

so there is a fixed aamount of threads

or does it create a thread when you need one, but it doesnt eliminate it

instead it parks it

after some time if u never use it it eliminates it

otherwise it uses it next time u need it

[lost matrix]

It creates N threads when you instantiate the thread pool.
Those are always the same N threads.

[quiet ice]

It depends on the nature of the pool

[grim ice]

thats what i assume

o

[lost matrix]

Oh righ. You can define Thread factories

[grim ice]

so a fixed amount of threads, damn that must suck resources though

what if i need only one

[quiet ice]

The fixed thread pool has N threads, however others may create more threads as needed

[lost matrix]

But usually you would use a fixed thread pool.

[quiet ice]

Yes

[lost matrix]

Then you create a single thread executor

Unless you plan on using the thread indefinitely. Then you just instantiate a new Thread object.

[grim ice]

i see

so if i wanna use way too many threads i use a thread pool

otherwise just make a thread on my own

[lost matrix]

You can have hundreds of parked threads lying around. Not that big of an issue.

[grim ice]

parking is basically lik

sleep mode

right?

u just put it to sleep, then wake it up if u need it

right?

[quiet ice]

To some degree yes, though it depends on the underlying OS

[lost matrix]

You make one on your own if you have a single task that has an indeterministic lifetime.

[grim ice]

and when its on "sleep mode" it doesnt require many resources

[grim ice]

ic

what if its a small task

a threadpool?

i know it wont last long

[glossy venture]

Thread pool is useful there

Cuz you dont have to constantly allocate new threads

[faint aspen]

https://postimg.cc/cg2Ksnym
How can I remove the one free space at the beginning? If I add an rank there is no such problem?

[lost matrix]

Add the whitespace to the formatting of the prefix?
I think you want to ask here: #help-server

[grim ice]

what is better, returning an object that can be null and if so return null or return a collection that has an element which is the result object, or an empty one if its null

i want to check == null later, but i think isEmpty might be better or smth

[glossy venture]

Just return null if its one object

[sterile token]

If you want to compare objects or string its recommend to do it using .equals()

[grim ice]

doesnt matter for null

i assume

[glossy venture]

Yeah it doesnt

[lost matrix]

Collections should be used sparely. There is an object called Optional<T> if you want to wrap your nulls. Actually really useful.

[quiet ice]

^

[grim ice]

i want performance

[sterile token]

Smile how it was call the option that let you check if player exists or not?

Wasnt Predicate?

[grim ice]

is optional good for tahat

[sterile token]

I cannot rember hence

[quiet ice]

If you need performance, use null

[grim ice]

btw whats the fastest collection for reading and writing

[lost matrix]

Predicate<T> is just a function that takes T and delivers a boolean

[quiet ice]

Usually a self-made one

[quaint mantle]

Avoid nulls if possible

[sterile token]

And what about for checking an action and returning it?

[quiet ice]

Lists have good random access times too as they are based on arrays

[sterile token]

Isnt used Predicate<T>?

[quiet ice]

However as soon as you work with primitives, type erasure is going to kill performance

[lost matrix]

Depends. If we are speaking of random access read/write without growing and with fixed bounds then ArrayList because its directly backed by an array.

[sterile token]

Types (T, E, K, V, U, etc) are not used at Runtime, they just are used at compiling

[quiet ice]

(it is subtle, but still noticable on the gc and the likes if used often enough)

[quiet ice]

exactly, useless auto-boxing may impact performance

[lost matrix]

But if we are speaking about, contains, add, remove, remove while iterating etc. then there are a lot of different options.

[sterile token]

What its better doing a foreach or iterating over it?

Because there is a big discussion with that

[lost matrix]

foreach is an iteration. You would have to specify what you mean by "iterating over it"

[quiet ice]

They are likely going to be the exactly same thing

[rotund pond]

Some guys said that Optionals shouldn't be used.
Here what they said (I use Google translate because there's things I can't translate properly, sorry if it's a bad translation...):
Not forbidden but heavy for what it is. In java we always say not to use nulls because if you mismanage your code it leads to too many npe problems. But the use an optional, so create an object that has a strong reference to another object just to replace a != null with an isPresent (or all the alternatives), well it's not even folichons to make the code more readable

[quiet ice]

for (var object : iterable)
is equal to

var iterator = iterable.iterator();
while (iterator.hasNext()) {
   var object = iterator.next();
}

[lost matrix]

Yes. And i think foreach compiles to the same code in most cases.

Wait

Would have to double check on that

[rotund pond]

Idk what's your opinion 7smile7

[lost matrix]

Who said that?

[sterile token]

Its possible to take a check into your http client lib?

[quiet ice]

foreach has a slight overhead

[quiet ice]

?

[rotund pond]

A french developer, tbh I don't wanna give a name because I don't want him to get harass for some reason, I just wanna understand things

[sterile token]

Dont you made your own http client? or wasnt you?

[quiet ice]

I do not think so

[sterile token]

I cannot remember who mentioned was doing a http client

😡

[quiet ice]

Why would you even do one?

[sterile token]

java 8 with that i tell you all

[quaint mantle]

Temporary objects are really optimized by gc

[lost matrix]

having a strong reference is not an issue because Optionals should only be ever used in volatile scopes anyways.
But its true that it has a slight overhead. Generally speaking i would value the robustness of my code over a little
bit of perfromance gain. In really really hot code i can see why optionals arent used. Otherwise they are totally fine.

[quaint mantle]

It is better to create a new optional every time rather than keeping it as field or reference idk

[rotund pond]

Thank you for your opinion

What do you mean by "volatile scopes" ?

[lost matrix]

But optionals are not just null checkers. They have a really rich API of dealing with empty content. Thats the main strength.
Let me find an example of a plugin i wrote last week.

[quiet ice]

My personal opinions about null:

• In environments where developers know how to use null checking tools and nullabillity annotations NPEs are a non-issue
• The same can be said about Optional (as you can add annotations to generics params - even if tools such as eclipse will have an heart attack due to it)
• Null can be ambiguous from time to time (no value, or null value?), Optional usually is not

[rotund pond]

DW I use optionals too :p

Just someone told me I shouldn't and I didn't really understand why, because it's really useful in APIs

[lost matrix]

This saves me like 15 lines of code.

[sterile token]

Who uses eclipse?

That has made me the day

[lost matrix]

And optionals that contain no value point at a single object anyways.
There is an uber Optional that is used to basically remove the whole overhead if
the element is null.

[lost matrix]

Let java handle that. Also optionals are immutable anyways. So re-using is not an option.

And read the message above that ^^

[lost matrix]

I should point out that the flatMap, map etc methods are from Optionals. Because you can stream that single element 😄

Hm but this is one thing i have not benchmarked so far. I should do that rn.

[rotund pond]

Ty for these informations @lost matrix

Very useful, as always

[midnight shore]

Hi, how can i make an armorstand look at a specific player?

[sterile token]

This would teleport the armor stand to player

You can take it as an example

Prob you should set the armor stand location to player location

[midnight shore]

i don't want to teleport it to the player i want to have an armor stand head pose to make it look like if it is looking at a player

[sterile token]

Oh

[midnight shore]

but ty btw

[sterile token]

You want an armor stand looking forward to player?

Like an npc?

[midnight shore]

yes

i have this now, but that's broken

i think i'm wrong with something mathematically

[sterile token]

Oh

[grim ice]

private void lookAtPlayer(ArmorStand armorstand, Player player) {
Location armorstandLocation = armorstand.getLocation(); 
Vector playerVec = player.getLocation().toVector();
Vector armorstandVec = armorstandLocation.toVector();
Vector facingVector = playerVec.subtract(armorstandVec).normalize();

armorstandLocation.setDirection(facingVector);
armorstand.teleport(armorstandLocation);
}```
Credits to Choco#9999

[next stratus]

Hey, does anyone have some experience with the worldedit api and knows how to do relative location stuff? I've been told iterating the region "isn't fast enough" by someone although I thought 18ms to iterate a region is pretty good

[midnight shore]

ty

[leaden sigil]

Hello, so i want to make cancel multiple events, when they happen, and i have this long piece of code:

    @EventHandler(priority = EventPriority.HIGHEST) public void on(PlayerInteractEvent event) { event.setCancelled(true); }
    @EventHandler(priority = EventPriority.HIGHEST) public void on(BlockBreakEvent event) { event.setCancelled(true); }
    @EventHandler(priority = EventPriority.HIGHEST) public void on(BlockPlaceEvent event) { event.setCancelled(true); }

Is there any better approach, instead of typing all of that?

[midnight shore]

but this is not using the head pose

[grim ice]

and

private static EulerAngle convertVectorToEulerAngle(Vector vec) {
     
        double x = vec.getX();
        double y = vec.getY();
        double z = vec.getZ();
     
        double xz = Math.sqrt(x*x + z*z);
     
        double eulX;
        if(x < 0) {
            if(y == 0) {
                eulX = Math.PI*0.5;
            } else {
                eulX = Math.atan(xz/y)+Math.PI;
            }
        } else {
            eulX = Math.atan(y/xz)+Math.PI*0.5;
        }```

[sacred mountain]

maths

pro

[grim ice]

then pass in facingVextor

[sacred mountain]

i cant math

[grim ice]

then setHeadPose

nah this isntm y math

Credits to @Quzzar

in spigot forums

[lusty cipher]

is there some way to detect when a end crystal is placed?

[eternal night]

I mean, either entity spawn event

or interact

[lusty cipher]

hmm entity spawn does seem likely

[eternal night]

Well both should trigger

Actually, EntityPlaceEvent is the one

lol

[red sedge]

is there a way to prevent dupe uuids?

[eternal night]

what are dupe uuids o.O ?

[red sedge]

i have a feeling UUID.randomUUID could generate smth duped

[eternal night]

That is rather unlikely

[red sedge]

but still possible

[waxen plinth]

Bruh

[eternal night]

"For example, the number of random version-4 UUIDs which need to be generated in order to have a 50% probability of at least one collision is 2.71 quintillion"

[waxen plinth]

That is so insanely unlikely

So you don't gotta worry about it

[eternal night]

you'd probably die from a lightning strike while coding spigot first

[sacred mountain]

lol

my mac mini was fried

when a lightning bolt hit my house

sockets burst out the wall

[eternal night]

and somehow still no uuid collision

[sacred mountain]

yes

[red sedge]

yeah but it is POSSIBLE

[eternal night]

bruh

no

it effectively isn't

especially in your closed system

[red sedge]

yeah but like

it would ruin everything if it does

[eternal night]

so would a meteor striking the earth

[red sedge]

i mean a meteor almost did

so probably

[eternal night]

probably more likely that that happens than a uuid 4 collision in your closed system

are you hiding your server in a meteor safe data centre ?

if not, start with that risk

[red sedge]

i am