help-development

[dry yacht]

That's how I'd do it.

[terse ore]

What is a Consumer?

[dry yacht]

Basically a callback which takes exactly one argument and returns nothing

You could also broadcast right in the method countDown, I just didn't want to hard-code it in

This way, it's reusable

[tardy delta]

no varargs?

[undone yarrow]

I put the jar file in my plugins folder but it doesnt appear and wont work in-game

I probably made a stupid error But I cant find it

[tardy delta]

theres an IntConsumer in the java package tho

[dry yacht]

Any errors? Your plugin.yml should be in the resources folder.

[undone yarrow]

No errors. Where is the resources folder?

ohh there

Ill move it there

[dry yacht]

Otherwise, it won't be added to the final jar.

[undone yarrow]

Ahh alright

[terse ore]

what's the font you're using?

[undone yarrow]

Still doesnt show when I type /pl

I always do the maven compile thingy, then package

and then put the jar in my plugins folder

[dry yacht]

Apple's system font, so SF Pro, I guess

[dry yacht]

Still no errors in the console? You could try unzipping that jar file you copied and check if the plugin.yml is actually in there

Or better yet, if you don't mind, you could share the jar. It's kinda hard telling you what's missing, as there could be a thousand different things wrong with it, xD.

[undone yarrow]

Sure, Ill dm it to you

[dry yacht]

Alrighty, gonna check it out real quick

[dry yacht]

Try changing main: me.JustinS_2006.particles to main: me.JustinS_2006.particles.ScrapCollection. No idea how that didn't complain in the console.

[tardy delta]

hmm jsonObject.get("item").getAsString() should work no? json { "item": "minecraft:yellow_wool" }

Cannot invoke "com.google.gson.JsonElement.getAsString()" because the return value of "com.google.gson.JsonObject.get(String)" is null

[undone yarrow]

Tried that. Didn't work. No error. I unzipped the jar file and it does show the plugin.yml

Do you need to see the code?

[terse ore]

ty for the code @dry yacht, I have modified it

[dry yacht]

I also had a look into the jar, seems like there's nothing wrong with it besides that malformed plugin.yml main entry

[terse ore]

instead of 120 seconds it will tell 2 minutes

[dry yacht]

I already did, as I have the jar. The plugin should be fine

[undone yarrow]

Hmm alright

[dry yacht]

Yeah, you can just format the timestamp. But other than that, I think that this is the way to go.

[terse ore]

way better than what I did tbh

[undone yarrow]

I do have a different plugin in that server, that I made a while ago, and it works

[dry yacht]

I just tried loading that plugin and I get the error about the malformed main path. Are you sure you load the correct plugin? :-:

[undone yarrow]

uhh

[dry yacht]

And way better than those people who just count down some integer in a task which is called every second, xD. Let the scheduler do the work, don't try to be your own scheduler. That's just my opinion about the whole thing.

[dry yacht]

Sounds stupid, I know, but if you changed the main path, there now should be nothing keeping your plugin from being loaded.

[dry yacht]

What happened to that file? D:

[undone yarrow]

What file?

[dry yacht]

the plugin.yml you posted

[undone yarrow]

It didn't change?

It's just moved to the right

so not everything's visible

[dry yacht]

Oh, xDD

[undone yarrow]

lmao

[dry yacht]

Well then, you should be fine

Again, my server tries to load the plugin

[terse ore]

Does someone know how a tabCompleter is registered?

[tardy delta]

set the overview on package iinstead of project

[tardy delta]

PluginCommand#setTabCompletor

what

why are you making a new set

[undone yarrow]

Here's the difference between the current plugin.yml and the one used in the working plugin @dry yacht

[tardy delta]

you are referencing toString before adding

[dry yacht]

The chad way to do it is to extend org.bukkit.command.Command and register in the server's command map yourself.

Just kidding, your way is preferred for beginners, obviously.

[tardy delta]

idk i use acf

[terse ore]

hmm

let me check that

[dry yacht]

Okay, all hope is lost then.

[tardy delta]

and im already using too much reflections so i dont bother

[eternal oxide]

use TabExecutor instead of CommandExecutor

TabExecutor does both Command and Tab

[tardy delta]

ya no clue why they made that interface

[eternal oxide]

simplicity

[dry yacht]

Shouldn't be because of your plugin.yml. I'm sure I could successfully load the plugin now, after you have changed that main path.

[tardy delta]

couldve done smth like <T extends CommandExecutor & TabCompletor> void smth (T t)

but ye

me making things more difficult then they are 🥹

[eternal oxide]

fine for us but a noob would never understand

[tardy delta]

thats what i love about the minestom discord, its not full of noobs

[eternal oxide]

Its probably toxic to them then

[undone yarrow]

One of the warnings say that ScrapCollection isn't used, which is the main class. Is that an issue?

[regal scaffold]

Good morning guys

[terse ore]

gm

[regal scaffold]

If I am trying to change the velocity of a slime when it gets hit. As in the speed that the slime moves. Do I change the velocity of the SlimeEntity itself or do I need to play with a different thing from EntityDamageFromEventityEvent

As in, the slime is a ball

[tardy delta]

huh

[undone yarrow]

https://tenor.com/view/computer-rage-mad-funny-computer-rage-gif-20851767

ugh why wont it work

[eternal oxide]

easiest way is if it is knocked back in the damage event schedule a task to run the next tick to which will multiply its velocity

[regal scaffold]

Well elgarl, Currently I'm using EntityDamageFromEventityEvent

[tardy delta]

what are you doign

[regal scaffold]

To detect when it gets hit

[tardy delta]

creating a hashset with one player every time :/

probably want the set as a field

[mortal hare]

you creating a queue everytime the player executes command??

[regal scaffold]

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

[eternal oxide]

runTask... entity.setVelocity(entity.getVelocity().multiply(2))
pseudo ^

[mortal hare]

HashSet queue = new HashSet<Player>();

[regal scaffold]

Yeah that's what I'm doing then

But it's not working correctly

Unless my multiplier is too low

[mortal hare]

you're adding the player to the new queue

every time you execute the command

[tardy delta]

Set<UUID> queue = new HashSet<>();

on class level

ig some game instance polls players from the queue, its not a real 'queue' tho

[mortal hare]

yea

you should be using something like

Deque<Player> queue = new LinkedList();

and then queue.add(player) to add the player

[tardy delta]

im thinking too much in c++ terms smh

emplace_back

[mortal hare]

queue.poll() to remove the first player from the queue

[dry yacht]

It at least tries to load for me, but there's something wrong with the command, xD. I noticed that you've compiled with java 19, so I first had to download that JDK.

Before that, the server would also complain about a higher compile version than it's own runtime. So I don't get how you're not seeing anything in your console. Maybe try setting up a new server, just to try the plugin, xD.

[mortal hare]

queue.pop() would remove the player last from the queue

[undone yarrow]

rip

why can't it just work

[tardy delta]

no u

linux fun until windows decides to wipe it

well the efi entry

[mortal hare]

yea, but sometimes you need to retrieve the object (in most cases you do need it)

well it removes it and retrieves it at the same time

The poll() method of Queue Interface returns and removes the element at the front end of the container

[undone yarrow]

It is. It's not that the command won't load. When I type /pl it doesnt even show the plugin

[lost matrix]

Then its not in your plugins folder

[undone yarrow]

It is...

I have another plugin in the same folder, and it loads

And I can't find the difference between the 2 plugins

[lost matrix]

There are only the following possibilities:
Its a jar file
-- Its red in /pl -> Error while enabling
-- Its green in /pl -> All fine

Its not a jar file or not in the folder
-- It wont show up in /pls

[undone yarrow]

It's a jar file and it's in the folder and it doesnt show up

when I type /pl

so something's broken

[lost matrix]

Not possible

[undone yarrow]

...

[lost matrix]

Look at your logs. There must be an error while you start the server.

[undone yarrow]

.

plugincourse loads

scrapcollection doesnt

[lost matrix]

If it doesnt show up at all in /pl then it doesnt have a plugin.yml at all.

Look at your logs. There must be an error while you start the server.

[undone yarrow]

.

theres the logs

and theres the plugin.yml

[eternal oxide]

latest.log in server root

[undone yarrow]

ohh alright

[lost matrix]

99.1% sure its something like "invalid plugin.yml"

[undone yarrow]

That doesnt look good

[lost matrix]

Ah or that one

You have 2 options:
Compile with an older java version
Run your server with a newer java version

[undone yarrow]

oh

alright

How do I compile with an older version?

[lost matrix]

Are you using maven?

[undone yarrow]

ye

[lost matrix]

How do you compile

[undone yarrow]

I press the maven compile thingy

hold on

let me ss it

[lost matrix]

Show your pom. Depending on that ill tell you how to change it

?paste

[undone axle]

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

[eternal oxide]

package not compile

compile does not make a jar

[mortal hare]

https://www.youtube.com/watch?v=R_Ec5fvswrE

[lost matrix]

Yeah that as well

[mortal hare]

man this fan made music disk

is such a banger

[undone yarrow]

After compile I press package

[undone yarrow]

why post this here?

[lost matrix]

package already runs compile

[undone yarrow]

My pom is really short so I'll post it here ```
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>org.JustinS</groupId>
<artifactId>ScrapCollection</artifactId>
<version>1.0-SNAPSHOT</version>

<properties>
    <maven.compiler.source>19</maven.compiler.source>
    <maven.compiler.target>19</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
    <dependency>
        <groupId>org.spigotmc</groupId>
        <artifactId>spigot-api</artifactId>
        <version>1.17.1-R0.1-SNAPSHOT</version>
    </dependency>
</dependencies>

</project>```

[undone yarrow]

oh

[lost matrix]

Thats the java version

[undone yarrow]

Ahh

[lost matrix]

Change it to 17

[undone yarrow]

Ill just change it to 17 then

[quaint mantle]

is there a way to limit/scale the amount of hearts shown in the healthbar, cus lets say i want 1000 health i dont want 500 hearts showing

[eternal oxide]

it has a scale method

[lost matrix]

There is an option in either spigot.yml or bukkit.yml
You can also set it per player by calling the scale thingy method

[eternal oxide]

getScale, setScale and setScaled

[lost matrix]

What type is your queue?

[quaint mantle]

cool time to do math so i can scale it

[lost matrix]

setScale(20) just sets it to 10 hearts always

I meant what type the queue variable is

[quaint mantle]

how would i make it so it has a max of 20 hearts always? setScale(10)?

[eternal oxide]

20

and setScaled(true)

[regal scaffold]

How can I detect if a player is jumping or not on the ground

[lost matrix]

40 sets it to 20 hearts. But default is 20 which sets it to 10 hearts.

[quaint mantle]

ahh okay

[regal scaffold]

Not with an event

[lost matrix]

A hashset is not a queue

[regal scaffold]

Like player.isJumping()

[lost matrix]

Also you are using raw types which is very bad

[undone yarrow]

Should I then compile or package?

[eternal oxide]

package only

[undone yarrow]

I tried just packaging but it didnt do anythign

Same error

[eternal oxide]

package runs compile first

[undone yarrow]

in the logs

[eternal oxide]

run clear before pacakage then

[undone yarrow]

k

[lost matrix]

Also go in File -> Project Structure and change your SDK for the project.

[regal scaffold]

How can I detect if a player is not on the ground using something like player#onGround()

[undone yarrow]

https://hub.spigotmc.org/javadocs/spigot/org/bukkit/entity/Entity.html#isOnGround()

[regal scaffold]

Deprecated

Oh ok cool

Thanks

Alright

Also, I assume yaw is what controls the view vertically, right?

[vocal cloud]

Yes

[eternal oxide]

pitch is verticle

yaw is turn

[regal scaffold]

Perfect, thanks!

Making volleyball in mc lol

[wet breach]

Use a linkedlist if you want dequeue functionality. Hashset isnt ordered and therefore cant be used for a queue

[regal scaffold]

Seemed like a fun project

[lost matrix]

Or... just a queue. ArrayDequeue for example.
Its like a LinkedList just in good.

[undone yarrow]

Good thing is, it now shows up in /pl and I can run the command. Bad thing is, command doesnt do anything, apart from type it out in the chat

[regal scaffold]

plugin.yml

[lost matrix]

plugin.yml -> add command

[regal scaffold]

2-0

[lost matrix]

[rotund ravine]

Show us your main class

[regal scaffold]

Show where you register the command

fk

0-1 for jan

[undone yarrow]

package me.JustinS_2006.particles;
import org.bukkit.plugin.java.JavaPlugin;

public final class ScrapCollection extends JavaPlugin{
    @Override
    public void onEnable(){
        this.getCommand("sc add").setExecutor(new AddParticleCommand());
    }
}

[lost matrix]

You are trying to getCommand("sc add"), arent you

[regal scaffold]

"sc"

FK

2-1 smile

[rotund ravine]

Ahaha

[regal scaffold]

I should've predicted it

[rotund ravine]

He was

[undone yarrow]

and uhh whats wrong with it

[regal scaffold]

"sc"

[undone yarrow]

?

[regal scaffold]

So the way commands work

Is that when you set a executor you set the executor for the main command not the arguments

Then you use the executor to check which command is used

[lost matrix]

Your command is called sc in you plugin.yml
The usage section is completely optional and does nothing really.

[undone yarrow]

hmm I see

[regal scaffold]

So you want to register "sc" and then in your executor class check for the arguments

[undone yarrow]

So I should make the command sc. Then in the command class, I check what argument is used, so in this case add, then do something there?

[regal scaffold]

yes

Good practice to use switch for command arguments if yu want

Volleyball math

[undone yarrow]

wdym

[regal scaffold]

Either a bunch of ifs or a switch

[wet breach]

Yeah usually the recommended but i dont know what they want. Linkedlist implements dequeue

So at minimum it would satisfy their requirement for the functionality portion lol

[regal scaffold]

  @Override
  public boolean onCommand(CommandSender cs, Command cmd, String label, String[] args) {
    if (!(cs instanceof Player sender)) return false;
    
    if (args.length == 0) {
      sender.sendMessage(ChatColor.RED + "Incorrect usage");
      return true;
    }
    switch (args[0]) {
      case "add" -> {
        queue.add(sender);
        sender.sendMessage("You were added to the Queue for the game!");
        if(hasPlayer){

        }
        return true;
      }
    }
    return true;
  }

[lost matrix]

Sure. I just like hating on LinkedList because it performs worse in whatever it does. There is just one use case for a LinkedList.

[regal scaffold]

That's a complete accurate way to do commands @undone yarrow

Ask questions if you dont understand something

[wet breach]

Ah got it yeah that is true lol

Anyways time to drive home.

[untold jewel]

Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private java.lang.Object java.lang.ref.Reference.referent accessible: module java.base does not "opens java.lang.ref" to unnamed module @4fb57196
        at java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) ~[?:?]

Never gotten this before. I use Oracle 18 JDK fyi

[regal scaffold]

Wrong import

Oh wait

What are you trying to do?

[eternal oxide]

Welcome to modern Java 🙂

Reflection

[regal scaffold]

I thought it was reflection too xd

[undone yarrow]

👍

[regal scaffold]

Did you understand it?

[undone yarrow]

ye

[regal scaffold]

Good

Always check for sender instance

Then arguments

Then do the command

[echo basalt]

something tells me you're trying to serialize something that's not really serializable

probably through gson

[undone yarrow]

But dont you need to check if the second arg is also null? Otherwise a command like '/sc add something' would still work

[regal scaffold]

You can have as many subcommands as you want

[untold jewel]

I have used this same method before on another project and it went smoothly. Here is the code that looks to create the problem:

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

[regal scaffold]

But if you want more either another switch, another if, or check that the arguments length is exactly what you need

In each method or where it checks if it's 0

[undone yarrow]

👍

[regal scaffold]

Either check for 0 && check for exact amount

Or if your arguments can have different amount of subarguments

Check in each case

Accordingly

You're using nms?

[echo basalt]

is your Clan serializable?

Also what fields does it store?

[regal scaffold]

Send full class plz

But I can see it's already missing serializable

[untold jewel]

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

[echo basalt]

yeah so

Location

is not really gonna work

[untold jewel]

sooo

what should I have instead

[undone yarrow]

is player.getTargetBlock(); deprecated?

I saw somewhere that it was deprecated but the docs dont say it is

[hazy parrot]

If docs doesnt say, it isn't

[eternal oxide]

Time to write your own minecraft now then

[native gale]

Hi! Where can I read about adapting my plugin for bungee?

[undone yarrow]

You're making a plugin that lets you switch your children? Nice

[eternal oxide]

Um, you are holding Players in a queue but you then try to cast it to UUID

[regal scaffold]

xd

[eternal oxide]

change ArrayList queue = new ArrayList<Player>(); to ArrayList queue = new ArrayList<UUID>();

[undone yarrow]

I need a list or an array or anything that can store a multitude of Blocks. What would be the best way to go about doing this?

[eternal oxide]

first work out what you actually want to store

[undone yarrow]

Blocks

not blocks, but a Block block

hard to explain

[eternal oxide]

Why do you need a List of Blocks?

[undone yarrow]

because.... uhm

[eternal oxide]

I ask because it's highly unlikely you actually need Blocks

[undone yarrow]

I need to store locations of blocks that will act as a sort of location you can get an item from when you right click that block

[regal scaffold]

How can I make a function that returns a number between x and y in which if the parameter is 45 it will return y and as the parameter descreses it will go closer to x

[eternal oxide]

So you actually need a List of Locations not Blocks

[undone yarrow]

blocks sounded easier to me than to store locations

but locations could work too

[eternal oxide]

then Set<Location>

[undone yarrow]

Now in words a normal human can understand please

[eternal oxide]

Set myLocations = new HashSet<Location>();

[undone yarrow]

What does the HashSet do

[eternal oxide]

prevents storing duplicates

[undone yarrow]

ohh thats cool

[quaint mantle]

?paste

[undone axle]

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

[quaint mantle]

everytime i call this function it doesnt reset the stats but just adds more?
Current stats and base stats are hashmaps of a custom enum and a double
https://paste.md-5.net/izalohegud.java

what am i doing wrong

[vocal cloud]

Not only that but you can call .remove() on sets and it returns a boolean so you don't have to .contains() .remove()

[regal scaffold]

How can I make a function that returns a number between x and y in which if the parameter is 45 it will return y and as the parameter descreses it will go closer to x

Is the only way with a spam of ifs?

[untold jewel]

I cannot use Location on gson. What else should I use?

[eternal oxide]

Yes you can but you have to write a TypeAdapter

[undone yarrow]

I have a feeling my code won't work

[eternal oxide]

this code operates on the original Map so it never resets

[undone yarrow]

What does the Set mean

[eternal oxide]

Set is Java

its a Class

[smoky oak]

set is a superclass, those are made so you have to think less

[quaint mantle]

do i need to use
currentstats = basestats.clone() instead?

[eternal oxide]

why not remove the stat before you do your new adding up?

or clear the Map

[quaint mantle]

i tried this before

would that work?

[eternal oxide]

no

[quaint mantle]

cus i tried it and it didnt

[eternal oxide]

you need to clear baseStats

why are you using currentStats and baseStats?

[quaint mantle]

cus the player always has atleast some of a certain stat

[eternal oxide]

I'm assuming this is totalling mods applied by armour?

[quaint mantle]

nah i have custom stats like base damage or smt that have a default value for all players

[eternal oxide]

then keep a map of yoru base stats and a separate map of your effect totals

[quaint mantle]

yea but how do i add them up to display them/use them

[eternal oxide]

baseStat.get + modified.get

[quaint mantle]

do i just make another map for that?

3 maps, base, modifier and total?

[eternal oxide]

you already have two

just don;t link them

[quaint mantle]

oh yea

alright

[eternal oxide]

baseStats and currentStats

[quaint mantle]

so like

currentstat.put(basestat.get + modifier)

whatever

u get it

[eternal oxide]

then in your update you just wipe yoru currentStat Map

[quaint mantle]

yea alright

[eternal oxide]

yep, before totalling

[quaint mantle]

so currentStats.clear()
and then this stuff

[eternal oxide]

yep

[quaint mantle]

alright thx

basically this

[tardy delta]

use merge

[eternal oxide]

yep

[quaint mantle]

what does that do, i mean how does it work/how do i use it

[smoky oak]

well

1 2 3
merge
1 1 1
gives
2 3 4

it adds lists element wise

[tardy delta]

check the javadocs

[quaint mantle]

currentStats.merge(statType, aDouble, Double::sum);

[tardy delta]

ya

[quaint mantle]

alrighttt

wait no thats not it

cus if it doesnt exist id need to add the baseStat too

[tardy delta]

if it doesnt exist it inserts baseStat iirc

[quaint mantle]

well i havent specified it anywhere so how would it

i think.. its this?

nah

oh wait i still need the if statement

smart

also need to add this

[echo basalt]

private <T, R> List<R> merge(List<T> firstCollection, List<T> secondCollection, BiFunction<T, T, R> transformer) {
  List<R> list = new ArrayList<>();
  int highestSize = Math.max(firstCollection.size(), secondCollection.size());

  for(int index = 0; index < highestSize; index++) {
    T firstElement = (index >= firstCollection.size()) ? null : firstCollection.get(index);
    T secondElement = (index >= secondCollection.size()) ? null : secondCollection.get(index);

    R transformed = transformer.apply(firstElement, secondElement);
    list.add(transformed);
  }

  return list;
}

🤔

[lost matrix]

Why do you need the index check if you are maxing the target index?

Either max the index or provide null for out of index access

[echo basalt]

Because it's not guaranteed that both lists are the same size

[lost matrix]

Oh i scrambled min and max here

I thought you where truncating

nvm then

[echo basalt]

If firstCollection has 5 elements, and secondCollection only has 3

we just assume the last 2 elements are null

and transform regardless

This might not be intended behavior, some people might prefer truncating

[lost matrix]

Sure sure. I thougth you wanted to truncate

[echo basalt]

or just... throw an exception

[lost matrix]

🤷

[echo basalt]

It's basic idiot proofing

[hushed pawn]

Can you suggest some kind of server code that you can find online and rely on it to create your own minigame server architecture?

[eternal oxide]

IF the license permits

[lost matrix]

?basics

[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.

[lost matrix]

You want a minigame library?

[hushed pawn]

maybe

i just wnat to figure out how big servers are done

like mmc or something

[smoky oak]

can someone link me a existing page on how to handle data please? the link in ?cc list doesnt exist

[eternal oxide]

cc list works in #bot-commands

[smoky oak]

well cc list works

but what i need is a tutorial on how to use databases

thats not from 2015

[eternal oxide]

what kind of database?

[smoky oak]

sqlite

like all resources i find are either generalized or old

[eternal oxide]

hasn't really changed since 2015

[smoky oak]

ah

on a different topic: if i shove a minecraft object into a database as a BLOB, and then return it, is it possible that it cannot be cast to whatever type it is originally if versions changed?

[thorn crypt]

Hello, I'm using markers with ProtocolLib 5.0.0 (Spigot 1.1.9.3) but I got a problem, when I try to put an ARGB color, it doesn't give me the good color. Here's the code and what it does in game. So I don't see what to use

[eternal oxide]

yes it's possible

[smoky oak]

urgh

and serialization with NBT isnt fun either

whatd you do

[eternal oxide]

use it's serialization method if available

[smoky oak]

would that work with nbt from other plugins included?

[eternal oxide]

it shoudl include all NBT

[smoky oak]

ah

interface inventory doesnt have serialization

[eternal oxide]

I do remember some issue with ItemStack enchantments though

vague memory

ItemStack does

[smoky oak]

so youre telling me to just put 54 serialized item stacks into the db instead of one inventory?

[eternal oxide]

yes, if none are null

[smoky oak]

i mean null check and if yes return new empty item stack?

whys the non null bit important

[eternal oxide]

no point in storing if it's null

waste of space

store ItemStack with it's slot

[tardy delta]

saved that

[smoky oak]

so youre saying to do
UUID | 1 | 2 | 3 |
... | <NULL> | <Serialized Stack> | <SerializedStack>
if i.e. slot 0 doesnt have an item?

[jade knot]

Is it able to tab-complete asynchronously in bungeecord

[eternal oxide]

no nulls at all

[smoky oak]

i mean the database null

'no entry'

is that what you mean?

[eternal oxide]

depending how many inventories you are storing use a table for eac

so you have index, data

[smoky oak]

smth like TABLE_NAME = "inventory_17" ?

[eternal oxide]

or if you are mashing all together then 1|data|3|data|5|data

[smoky oak]

hm

problem

the number of inventories may change over time

so do i just generative code that adds the corresponding table if its needed?

[eternal oxide]

yes

[smoky oak]

i think i know what you mean

now i only need to understand the sql code lol

wait

itemStack serialize returns a mpa

*map

do i stuff that into the DB as BLOB?

[eternal oxide]

yes

[smoky oak]

ok

[eternal oxide]

or encode to base64

[smoky oak]

i dislike base64 encoding cuz it just feels inherently unsafe

i know it exists but i really dont know when to use it

the map thing should be more version-change resilient correct?

i mean if they change anything about the serialized class that fucks it if its B64

[eternal oxide]

in that case use https://gist.github.com/graywolf336/8153678 just don;t do the base64 step

[thorn crypt]

Yo, what is used by Marker ? Cause with ARGB (As I saw on wiki.vg here :https://wiki.vg/Plugin_channels#minecraft:debug.2Fgame_test_add_marker) it doesn't get me the good color

[dry yacht]

https://streamable.com/s8wb5w

God, IdeaVim SUCKS! I hate this bug, and it has been there since ages already. Does anybody else use this plugin and also experiences it messing up and pasting in import statements when trying to repeat actions? Are there any solutions? @tender shard I think you use it too, any ideas?

[regal geyser]

anyone here good with java? wanna ask little question

[opal juniper]

no we all suck

[cold field]

Does anyone know if it is normal that the world spawnpoint chunk is always loaded?

[opal juniper]

yep that is expected behaviour

spawnchunks are kept loaded

[cold field]

Is there a way to disable it?

[eternal oxide]

by default but changeable

spigot.yml probably

[cold field]

uh, ok ty.

[regal geyser]

good, ill ask

import java.util.Scanner;


public class main {

    public static void main(String[] args) {

    Scanner scanner = new Scanner(System.in);

    int num = scanner.nextInt();

    int i = 1;
    while(i<=10) {
        System.out.println(num * i);
        i++;
    }
}
}

what wrong with this code?

[pseudo hazel]

run it

[opal juniper]

define "wrong"

[regal geyser]

get stuck like this when i wanna run it

[regal geyser]

not working?

tried different code, worked

[pseudo hazel]

can you type in the terminal?

[opal juniper]

its not stuck you need to enter

[regal geyser]

and different ide, worked

oh ffs

forgot there was input

[opal juniper]

[regal geyser]

ive been trying to fix it for 30 mins now

[frail pilot]

Wp

[pseudo hazel]

lmao

[regal geyser]

thanks yall lol

[pseudo hazel]

input is like the only thing in this program

[regal geyser]

the worst thing is i wrote the whole code

[livid dove]

This is why God invented afk warning messages 😅

"Erm hey buddy its been 10 mins, u gonna put the input in?" 🤣

[tawny remnant]

how do i set the damage AND velocity of an arrow?:

[cold field]

Searched everywhere the only thing I could find was in the API https://hub.spigotmc.org/javadocs/spigot/org/bukkit/World.html#setKeepSpawnInMemory(boolean) but I was interested in a config file

[lost matrix]

Put a PDC tag with your damage on the arrow, listen for the EntityDamageByEntityEvent and apply the custom damage of your arrow,

[regal geyser]

i whish we had this

[charred blaze]

potion drink event?

[lost matrix]

ItemConsumeEvent

[livid dove]

You code it in my dude

[charred blaze]

its PlayerItemConsumeEvent

[thorn crypt]

Does someone know why this marker appear with this color as I put this rgb(179, 77, 179) ? I can't understand why

[mortal hare]

wtf

you can make transparent blocks?

[charred blaze]

"Material.BARRIER"

[eternal night]

iirc markers are limited on the colour spectrum

[slim pier]

how to unload? yml file in java plugin

[mortal hare]

wtf even is this

[charred blaze]

yeah what block is that?

[opal juniper]

think it got clamped

[mortal hare]

this seems like an unlocked debug feature

of minecraft client

[thorn crypt]

It’s marker

[mortal hare]

can you explain this more in detail

[thorn crypt]

Yes i know, but I want to make it red or blue etc. I know it’s possible

[slim pier]

ex) unload yaml "plugins/Skript/SKdatabase/%{name}%.yml" (skirpt-yaml addon)

[thorn crypt]

I don’t really know how to explain sorry. But i would say it’s a thing that can be used for debug, like getting an position to another for exemple ?

[mortal hare]

oh it see

Never sent, but used to set different debug markers in the world. Does not render for vanilla clients below version 1.16.5.

https://wiki.vg/Plugin_channels#minecraft:debug.2Fgame_test_add_marker

[thorn crypt]

Yup

[mortal hare]

last time i checked this

this was unrenderable without mods

[polar atlas]

I'm afraid that's not related to java development on your end but rather skript's. better check out official document.

[thorn crypt]

Now it is xD
But I don’t get how tf I set the color. I saw it was rgb but it only giving me different type of green

[mortal hare]

this seems like a cool way

to visualize block selections

in vanilla

or make colored zones

[thorn crypt]

Yes, I’m doing a funny plugin. But without finding how the color work, it’s impossible to make it

[slim pier]

I want to remove the file, but I can't remove the file because the server is using it, so I wonder if there is a way to solve this problem

[charred blaze]

what event is fired when eating a golden apple?

[tardy delta]

use linux

[slim pier]

Is there any way to do it on Windows?

[tardy delta]

shut down the server?

[lost matrix]

PlayerItemConsumeEvent as well...

[charred blaze]

thanks

[slim pier]

Can't I use the plugin?

[tardy delta]

what are we even talking about

[slim pier]

sorry i'm not good at English

[charred blaze]

rename it

and then delete it

[slim pier]

thanks

[chrome beacon]

Yeah

[charred blaze]

yeah why not you are just wasting memory

[lost matrix]

ConcurrentModificationException incoming soon

[charred blaze]

wdym

send them a title message?

[charred blaze]

^

[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.

[charred blaze]

store it in array or something

;-;

[lost matrix]

State machine. Create an Enum which defines the state of the game.
Could be

IDLE,
LOBBY,
SETUP,
ACTIVE

For example

[charred blaze]

creating object only to store single variable?

lel

[charred blaze]

still

[lost matrix]

...

Doesnt exist

[rotund ravine]

Hm? Why do you need get

[charred blaze]

why dont you just store booleans in hashset or something?

[rotund ravine]

Are you using the correct collextion for your use? @quaint mantle

[chrome beacon]

???

[lost matrix]

XD

[charred blaze]

why not

[lost matrix]

bc your set will always have 2 values and not more...

[rotund ravine]

@quaint mantle Use a different collection

A stack or smth

[charred blaze]

but he has only one value in his object

[rotund ravine]

ArrayDeque or similar

[charred blaze]

so why not just storing it in hashset

i mean i dont get the point of creating object only to store one variable in it

[lost matrix]

You would obviously not store only one object in there.
But using a collection with floating values is just bad design.

[rotund ravine]

I told you ArrayDeque or similar

[charred blaze]

im not he is

[rotund ravine]

It’s made for such stuff

[charred blaze]

^

[lost matrix]

Yes this is perfectly fine. Throwing something in a Map<UUID, Boolean> is not.

[rotund ravine]

https://docs.oracle.com/javase/7/docs/api/java/util/ArrayDeque.html

@quaint mantle

@quaint mantle pollFirst in this case

[crisp arch]

if i wanted to add speed 2 to a player would the amplifier be 1 or 2

[rotund ravine]

.

[chrome beacon]

1

[crisp arch]

kk ty

[chrome beacon]

?tas For future reference 🙂

[undone axle]

https://tryitands.ee/

[crisp arch]

💀

[rotund ravine]

Why?

Not much sense other than a lookup table to see all the active games etc.

[quaint mantle]

Who will make a light plugin for free?

[tardy delta]

?services

[undone axle]

If you wish to request or offer development/art/building/administration services, please do so at https://www.spigotmc.org/forums/services-recruitment-v2.54/

[brisk estuary]

public final void setOnScrollFinished(EventHandler<? super ScrollEvent> var1) {
        this.onScrollFinishedProperty().set(var1);
    }

The <? super ScrollEvent> just means that it is an instance of a class which is a child of ScrollEvent, right?

[lost matrix]

This looks like decompiled code...

[charred blaze]

why

[brisk estuary]

Yes, it is. Am I right, though?

[lost matrix]

Yes

[charred blaze]

and where do you store that Game object? in hashset?

[lost matrix]

Wait

Its super so it must be a parent class

[charred blaze]

how do i get cause of InventoryCloseEvent? like if server made player to close it or player closed it himself

[pseudo hazel]

the server doesnt detect opening and closing of the player inventory, for containers and stuff you can keep a variable to see if its opened by a player or not

but there is no existing method to check for it

[charred blaze]

HashMap?

[quaint mantle]

Guys, who will make the plugin for the design?

[undone yarrow]

Ehh what's this? [16:46:17] [Server thread/ERROR]: Error occurred while enabling ScrapCollection v1.0 (Is it up to date?) java.lang.NullPointerException: Cannot invoke "org.bukkit.command.PluginCommand.setExecutor(org.bukkit.command.CommandExecutor)" because the return value of "me.JustinS_2006.particles.ScrapCollection.getCommand(String)" is null at me.JustinS_2006.particles.ScrapCollection.onEnable(ScrapCollection.java:7) ~[?:?] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[server.jar:3284a-Spigot-3892929-0ab8487] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:342) ~[server.jar:3284a-Spigot-3892929-0ab8487] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:480) ~[server.jar:3284a-Spigot-3892929-0ab8487] at org.bukkit.craftbukkit.v1_17_R1.CraftServer.enablePlugin(CraftServer.java:520) ~[server.jar:3284a-Spigot-3892929-0ab8487] at org.bukkit.craftbukkit.v1_17_R1.CraftServer.enablePlugins(CraftServer.java:434) ~[server.jar:3284a-Spigot-3892929-0ab8487] at net.minecraft.server.MinecraftServer.loadWorld(MinecraftServer.java:619) ~[server.jar:3284a-Spigot-3892929-0ab8487] at net.minecraft.server.dedicated.DedicatedServer.init(DedicatedServer.java:266) ~[server.jar:3284a-Spigot-3892929-0ab8487] at net.minecraft.server.MinecraftServer.x(MinecraftServer.java:1010) ~[server.jar:3284a-Spigot-3892929-0ab8487] at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:305) ~[server.jar:3284a-Spigot-3892929-0ab8487] at java.lang.Thread.run(Thread.java:833) [?:?]

[vocal cloud]

That's a you messed up error

[undone yarrow]

rip

bro my internet is going haywire rn wtf

Anyways

why am I getting that error

[lost matrix]

cause you messed up

plugin.yml

[chrome beacon]

You forgot to register the command in the plugin.yml

Probably

[undone yarrow]

Why is it suddenly so silent

[vocal cloud]

Show the line that's throwing the error too

[undone yarrow]

idk where

doesnt show it

[vocal cloud]

?paste

[undone axle]

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

[vocal cloud]

Literally says at me.JustinS_2006.particles.ScrapCollection.onEnable(ScrapCollection.java:7

[undone yarrow]

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

[vocal cloud]

That's the wrong class

[tawny remnant]

why cant i put Extends EntityZombie in coding 1.19??????

[undone yarrow]

Any idea on whats going wrong?

[vocal cloud]

Check to make sure everything looks right in the compiled jar

[vocal cloud]

Are you including NMS in your project?

[kind hatch]

Are you using the mappings?

[tawny remnant]

i dont think so. Can you send link for 1.19.3?

[vocal cloud]

?nms

[undone axle]

https://blog.jeff-media.com/nms-use-mojang-mappings-for-your-spigot-plugins/

[warm light]

how can I get the output of a command that I run using Bukkit.dispatchCommand()?

[zealous osprey]

You might be able to use a dynamic proxy on the root method for closing an inventory for the spigot api.

[vocal cloud]

Why would you want to do that?

[warm light]

I am adding a feature

[lost matrix]

cool

[warm light]

dispatchCommand return Boolean. so how can I get the output? :/

[lost matrix]

Implement CommandSender and dispatch the command with it.

[undone yarrow]

Why am I getting this error? [16:46:17] [Server thread/ERROR]: Error occurred while enabling ScrapCollection v1.0 (Is it up to date?) java.lang.NullPointerException: Cannot invoke "org.bukkit.command.PluginCommand.setExecutor(org.bukkit.command.CommandExecutor)" because the return value of "me.JustinS_2006.particles.ScrapCollection.getCommand(String)" is null at me.JustinS_2006.particles.ScrapCollection.onEnable(ScrapCollection.java:7) ~[?:?]` ...
I can't find anything strange in my code, nor in my plugin.yml file.

package me.JustinS_2006.particles;
import org.bukkit.plugin.java.JavaPlugin;

public final class ScrapCollection extends JavaPlugin{
    @Override
    public void onEnable(){
        this.getCommand("sc").setExecutor(new AddParticleCommand());
    }
}

name: ScrapCollection
main: me.JustinS_2006.particles.ScrapCollection
version: 1.0
api-version: 1.17
description: Adds scrap to blocks
commands:
  sc:
    description: Adds a particle effect to a block
    usage: /sc```

[quaint mantle]

Can anyone give me a good example on how to implement custom block models into minecraft with custom textures, without overriding vanilla blocks or losing any vanilla blocks? I am aware of the armorstand and mushroom block data methods, but I don't know how to implement it into my plugin.

[quaint mantle]

Null pointers, do a try/catch

[lost matrix]

lol...

[quaint mantle]

because the return value of "me.JustinS_2006.particles.ScrapCollection.getCommand(String)" is null

[undone yarrow]

Yeah, but I don't understand why it's null

[lost matrix]

NPE is the one exception you should never catch

[tawny remnant]

how do i edit the amount of given xp?
https://paste.md-5.net/gadavarigu.java

[quaint mantle]

I've caught them, and handle them myself by allowing it to print to console where exactly in the code it's failing

[lost matrix]

Yeah. That makes exactly zero sense... The exception already tells you exactly where it was caused.

[quaint mantle]

Not always

[undone yarrow]

So uhh what should I do

[lost matrix]

Anyways this is not possible. Best you can do is use spawners, set the entity in the spawner and set its helmet to your custom model.
Then disable the spawning of the spawner.
This is quite expensive for client and server tho.

[undone yarrow]

Why not just use a block that's not available in your world?

[quaint mantle]

I've seen it done with specific blockstates of mushrooms that don't happen naturally, same with specific noteblock instrument/sound mixtures. Just don't know how to implement it

[quaint mantle]

The goal is to keep everything available

[lost matrix]

Resourcepack predicates

[charred blaze]

what

[crimson scarab]

how would i begin to make or find a non walkable a* path finder bukkit

[undone yarrow]

Shouldntname: ScrapCollection main: me.JustinS_2006.particles.ScrapCollection version: 1.0 api-version: 1.17 description: Adds scrap to blocks commands: sc: description: Adds a particle effect to a block usage: /sc be name: ScrapCollection main: me.JustinS_2006.particles.ScrapCollection version: 1.0 api-version: 1.17 description: Adds scrap to blocks commands: sc: description: "Adds a particle effect to a block" usage: "/sc [arg1]"

[glad prawn]

Why not <effect>

[undone yarrow]

what?

[glad prawn]

Nothing

[undone yarrow]

Got it working

AI proves itself more useful than humans once again

[smoky finch]

Does anyone know why armorstands spawned via packets aren't affected by gravity? I didn't change any of its properties, I just called the ctor, passed it to the spawn packet and sent it to the player

[lost matrix]

The server doesnt know they exist so they dont get ticked and are as a result not affected by anything, including gravity

[smoky finch]

Do you know how I can handle their movement manually?

[lost matrix]

Send movement packets for them

[smoky finch]

So when entities fall, a velocity packet is being sent behind the scenes by the server?

because performance wise that doesnt sound logical

[tawny remnant]

how can i set skull texture from minecraft heads website

[lost matrix]

Create a PlayerProfile, get the PlayerTextures from it, change the texture, set the PlayerProfile on the Skull.
Skull is a TileState so you need to get the BlockState of your Block and cast it to Skull.
(Dont forget to call update() on the Skull after setting the texture)

[tawny remnant]

i need it on ItemStack

[lost matrix]

Well then the same but get the ItemMeta as SkullItemMeta

Or SkullMeta i think

[chrome beacon]

^

[lost matrix]

The server sends thousands of packets per second for just entities

[mortal hare]

no

physics are calculated by the server

the only physics that are not calculated by the server are player movement

iirc

[smoky finch]

Alright, but how do I actually handle "physics calculation" manually for an entity?

[echo basalt]

there's a move method

Client-side behavior is a bit weird

certain entities have default speeds and all

for example, an Item entity "flies" upwards when spawned, as the client predicts it's a block breaking / entity dying

you can prevent that by sending a secondary speed packet setting all axis as 0,0,0

Now, packet-based entities with movement seem counter-intuitive

you probably just want a real entity hidden with Player#hideEntity (paper) or just send an Entity remove packet

[warm galleon]

For 1.19.3, what is the maven dependency I need to use>

?*

[remote swallow]

same as other versions

[warm galleon]

i have not developed plugins in a year and

<dependency>
            <groupId>org.spigotmc</groupId>
            <artifactId>spigot-api</artifactId>
            <version></version>
            <scope>provided</scope>
</dependency>

1.19 doesnt seem to exist

not in the spigot-api or spigot artifacts

[remote swallow]

do you have the repo

[icy beacon]

1.19-R0.1-SNAPSHOT

and yeah the repo

[warm galleon]

<repository>
<id>spigotmc-repo</id>
<url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
</repository>

oops

is it that one

[icy beacon]

<repository>
            <id>spigotmc-repo</id>
            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
        </repository>

yeah seems like it's accurate

[remote swallow]

use 1.19-R0.1-SNAPSHOT as the version and reload maven

[icy beacon]

did you make sure to reload maven?

sniped 😦

[warm galleon]

yep

[remote swallow]

im guessing ij only lists versions on your computer

[icy beacon]

yeah it does

[remote swallow]

use 1.19-R0.1-SNAPSHOT anyway and see what happened

[icy beacon]

the ones that are in .m2

[warm galleon]

oh shit its because i misspelled snapshot

[icy beacon]

xD

[warm galleon]

:D

[icy beacon]

happens to all of us

oof

[smoky finch]

For my case I simply want to make the armorstand have the levitation effect, do you think this can be done without registering them to bukkit as real entities
I tried sending an effect packet, but yeah, no luck

[warm galleon]

i missed the A lmao

tyty

[icy beacon]

except with intellij you can use the Minecraft Development plugin

it does everything for you 😄

[warm galleon]

whats thtat

[icy beacon]

it's an intellij plugin

basically adds a Spigot plugin preset to projects

one sec

[echo basalt]

you can just send movement packets

[warm galleon]

this one? if so i prob should get it

[echo basalt]

with a specific offset

[icy beacon]

yeah

[warm galleon]

damn crazy

[icy beacon]

it does everything for you, it'll create a maven project with spigot repo and dep + plugin.yml + main class

[warm galleon]

tyvm i didnt know that existed

[icy beacon]

anytime 🙂

[warm galleon]

this is asking for version right

using the plugon

plugin

[remote swallow]

yeah

spigot ver is next page

[warm galleon]

or is it asking for my project details

[remote swallow]

project details

[pseudo hazel]

yeah this is just your project

[warm galleon]

alright

[icy beacon]

yeah

[pseudo hazel]

the version doesnt matter except for the file it creates xD

[icy beacon]

you can configure all of it later anyway

in pom.xml & plugin.yml

this plugin is just a shorthand for creating all of it

[remote swallow]

it makes it so you only need to change pom

[warm galleon]

oh i see

[icy beacon]

yeah it's just a convenient shortcut for you

[warm galleon]

i see

[icy beacon]

so you don't have to memorize all the required files, repo, dependency, etc

[regal scaffold]

Is java ever pass by reference?

Like if I have a method to set specific slots in a inventory, and I pass it the inventory

Do I need to make the method return the inventory and save it back? Can I make the method void and it will keep the changes in the original method

[echo basalt]

it passes reference

you should look into mutable / immutable

[regal scaffold]

setDefaultButtons(inventory);

#saveDefaultButtons

inventory#setItem();

[tardy delta]

java is pass by value

[echo basalt]

Player player = ...;
Player player2 = ...;

Player object = player;

setPlayerName(object, "player1");

object = player2;

setPlayerName(object, "player2");

assert !player.getName().equals(player2.getName());
assert object == player2;
assert player2 != player1;

[tardy delta]

references and primitives are both passed by value

[regal scaffold]

Why do I have 2 different answers

I swore I did read that java is pass by value

But illusion said reference

[tardy delta]

it is

[echo basalt]

Objects have references that are passed

primitives aren't really objects so the value itself is passed

Every time you define a variable, you're just creating a new "pointer" to that reference

[regal scaffold]

So then . would work

[echo basalt]

yea

[regal scaffold]

But with primitives it wouldn't

Cool. thanks

[pseudo hazel]

good luck using . on primitives

[regal scaffold]

?

My code isn't made for primitives tho

It's for an Inventory

[pseudo hazel]

I mean usually there arent very many options

[weak meteor]

?paste

[undone axle]

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

[undone yarrow]

I got a command working that adds specified block locations to a list, but now I want to add a particle effect above all the blocks in that list. How would I do that

What class should I put that in, I mean

[lost matrix]

Use a scheduler to schedule the particles

[undone yarrow]

And how would I get my locations from my other class, and reference it in my main class? private final Set scrapLocations = new HashSet<Location>();

I want to reference scrapLocations in my main class

[eternal oxide]

do you need them all at teh same time?

[undone yarrow]

wdym

All the locations at the same time?

[eternal oxide]

surel;y you just need an add, remove and contains check

[weak meteor]

This is my code: https://paste.md-5.net/taciselovo.js
The problem is everytime i execute my command with a subcommand i get the answer of all below
example:
/astralgkits create
Output inserver:

Create Subcommand
Edit Subcommand
Delete Subcommand
Info Subcommand

idk why if i have the break statement

[undone yarrow]

No? I want to take all the scrapLocations, and add looping particles above them

I want to do the spawnParticles in my main class as well

[eternal oxide]

don;t do it in your main

[undone yarrow]

why

[eternal oxide]

Single responsibility principle

[undone yarrow]

So where should I do it then?

[eternal oxide]

each class shoudl have its own purpose

do it in a sub class of where you have your scrapLocations

[undone yarrow]

The same class where I add block locations using a command?

Seems like an odd place to put it, but if that's what people usually do I guess it's fine

[eternal oxide]

no

[undone yarrow]

....

[eternal oxide]

that class should just be a command handler

[undone yarrow]

That class is also where I have my scrapLocations

[eternal oxide]

each class handles one job

you should create a class just to handle your locations

[undone yarrow]

That class checks for the sc add command, then puts the block loc in the list

[eternal oxide]

with a public method for add/remove and contains

[undone yarrow]

If I do that Ill end up having 5000 classes for a simple plugin

[eternal oxide]

in that class you could handle a runnable to do your particles

[undone yarrow]

My original question hasnt been answered though

[eternal oxide]

it has, your scrp locations should not be accecssed from your main

[regal scaffold]

@tender shard

Hey, you said you don't do config files anymore, no database or yml and just store all the data into pdcs

[remote swallow]

most stuff could be stored on pdc, a config file is still needed

for quite a lot of things

[undone yarrow]

Alright so I have a particlehandler class, but somehow I need to run the class when the add command is run

[dry yacht]

Does anybody know whether org.jetbrains.annotations have any effect at runtime? I'm trying to check for the presence of Nullable at runtime, so I know whether or not to set a default value on an item stack I'm automatically mapping using my config mapper. I cannot access the annotation class at runtime tho, because they're not on the classpath. Would shading them into root scope (as I do not want to relocate, for obvious reasons) hurt anything I'm unaware of?

[regal scaffold]

Hey, is anyone available to give a look at my serializable class please

[undone axle]

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

[regal scaffold]

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

I think I don't but I will check

[dry yacht]

Nevermind, they aren't runtime retained. :(

[regal scaffold]

That is odd

Alright

Oh wait I got it

deserialize

It's there

[fallen snow]

Hi everyone, trying to get a player head texture but it's just coming through as a regular steve. Any ideas?

            ItemStack headStack = itemStack.clone();
            SkullMeta meta = (SkullMeta) headStack.getItemMeta();

            GameProfile profile = new GameProfile(UUID.randomUUID(), null);
            profile.getProperties().put("textures", new Property("textures", headURL));
            try {
                Field profileField = meta.getClass().getDeclaredField("profile");
                profileField.setAccessible(true);
                profileField.set(meta, profile);
            } catch (NoSuchFieldException | IllegalAccessException e) {
                e.printStackTrace();
            }

            headStack.setItemMeta(meta);
            return headStack;

1.19.3

[regal scaffold]

Because UUID is not easily serialzable into a PDC

[undone axle]

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

[regal scaffold]

Yeah it has a completely different method for UUID

or... that 1 line

Also it's inside of an object so it's not that big of a deal

Cause I'm storing the entire object

[glossy venture]

very memory inefficient

[dry yacht]

Could you debug-log the headURL and show me it's value? Please just paste it into the chat.

[glossy venture]

and haram

[weak meteor]

switch (subcommand){
case "create": sender.sendMessage("Create subcommand"); break;
case "edit": sender.sendMessage("Edit subcommand"); break;
case "delete": sender.sendMessage("Delete subcommand"); break;
case "info": sender.sendMessage("info subcommand"); break;
}

im getting every sendMessage in case.
Create will execute all below
Edit all below and stuff

Help :(

[fallen snow]

Yep give me 2 mins

[glossy venture]

you could use a ByteBuffer to store it as a byte array inside the object

[regal scaffold]

Yeah you're right I could

I mean that's what we were saying

What's so wrong about storing as a string

[glossy venture]

memory

usage

[dry yacht]

That's why we need 32 gigs nowadays

[glossy venture]

exactly

[weak meteor]

can someone help me?

[dry yacht]

Most developers are ignorant of the underlying machine and want to just live in abstraction land all day.

[glossy venture]

36 * 2 = 72 bytes per UUID per object per container

idk if its 46 chars (it wasnt)

forgot

[dry yacht]

Uhm... yeah, sure, you got my point! xD

[glossy venture]

which you could store in just 20 with byte array (i assume minecraft stores the length in nbt so + 4 bytes for an int)

[undone yarrow]

How do I loop through this public Set scrapLocations = new HashSet<Location>();?

I want to add particles at all those locations

I tried that

but it gives weird errors

1 sec

It just underlines it in red

Incompatible types. Found: 'org.bukkit.Location', required: 'java.lang.Object'

Locations arent objects right?

Somehow that fixes it. What's the difference?

But now Im not defining what Hashset is right

[glossy venture]

java doesnt know whats in your set

[undone yarrow]

But HashSet<> <--- the bracket-thingies are empty?

[glossy venture]

the compiler implicitly derives that

from the declaration

[undone yarrow]

ohh I see

[glossy venture]

so since your Set has type Location the compiler can derive that the HashSet<> should be a HashSet<Location>

[undone yarrow]

yeah alright

Thanks

[glossy venture]

well it knows the type of the field, with actual type parameters but it doesnt know the objects generic type

the actual type args are part of the field signature

[undone yarrow]

JVM?

[analog thicket]

Hello, I have a problem with getting something from my config. because it makes a map list null when it gets put into the config.YML. That causes this line to make crate null. How would i fix this?

Map<?, ?> crate = (Map<?, ?>) item.get(crateNumber);

https://paste.md-5.net/awimovomux.cs CONFIG

[undone yarrow]

ah alright

[analog thicket]

?paste

[undone axle]

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

[dry yacht]

Generics of member fields aren't erased

[undone yarrow]

Anyways, onto my next question.
Now that I have this, how can I run this method, let's say every second. I heard about a getScheduler but Im not sure how it works java public void spawnParticles(Particle particle){ for (Location location : scrapLocations) { location.getWorld().spawnParticle(Particle.SCRAPE, location, 7, 0.2, 0.4, 0.5); }

[undone axle]

https://hub.spigotmc.org/javadocs/spigot

[dry yacht]

What do you mean by recognize? It doesn't typecheck when operating on those members, no, but the information is still there. Unlike on generics in other parts of the code.

How am I matching on them at runtime then?

That's what I meant

[tardy delta]

!isEmpty 🥹

[dry yacht]

Isn't type erasure happening at compile time tho? So if they persist, isn't it wrong to say "they are wiped"?

[analog thicket]

Would anyone know this?

[buoyant viper]

all fun n games til we get https://openjdk.org/projects/valhalla/

[undone yarrow]

Is there an alternative for schedulers? This shit is weird and messes up my code

Via this chat or dms?

[river oracle]

?paste

[undone axle]

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

[analog thicket]

How would i fix it to not display null, because i cant get it to work when its there.

[undone yarrow]

https://paste.md-5.net/rimugawuti.java ParticleHandler
https://paste.md-5.net/ivezogayit.java Main

[dry yacht]

  private final java.util.Map<java.lang.Integer, me.blvckbytes.headcatalog.gui.UISlot> slots;
    descriptor: Ljava/util/Map;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: #26                          // Ljava/util/Map<Ljava/lang/Integer;Lme/blvckbytes/headcatalog/gui/UISlot;>;

Okay, I must really be misunderstanding something then.

[undone yarrow]

I removed them from the posted code because they didn't work and are probably completely wrong

[analog thicket]

Well other question then, how would i obtain material?

[undone yarrow]

All I removed from ParticleHandler wasjava private static Plugin plugin = null; private int delayID = 1; and ```java
public void spawnParticles(Particle particle, Plug in instance){
plugin = instance;
for (Location location : scrapLocations) {

        location.getWorld().spawnParticle(Particle.SCRAPE, location, 7, 0.2, 0.4, 0.5);
    }
    Bukkit.getScheduler().runTaskLater(this, this::spawnParticles(Particle.SCRAPE), 20L);
}

[buoyant viper]

this::spawnParticles(Particle.SCRAPE)

i dont think thats valid java

[undone yarrow]

me neither

I was trying stuff

[buoyant viper]

so it was PEBKAC

[undone yarrow]

hoping it would work

[buoyant viper]

ezpz

[quaint mantle]

Idk where else to ask but how do i reset where my resultset loops from?
Cause i use ResultSet.next() but the next time it starts off where it stopped

[tardy delta]

what

[quaint mantle]

i have a database with uuid's of players,
to get the right player i have a resultset with a while loop then check if it the uuid is equal to the selected player, i do this with:
while (resultSet.next())
lets say the last time the first loop result was the correct one, the next time i loop it skips the first entry

FIXED:
i just make a new connection everytime i need the data and then close the connection

[undone yarrow]

What about java public void spawnParticlesEverySecond(Particle particle, Plugin plugin) { BukkitRunnable runnable = new BukkitRunnable() { public void run() { for (Location location : scrapLocations) { location.getWorld().spawnParticle(particle, location, 7, 0.2, 0.4, 0.5); } } }; runnable.runTaskTimer(plugin, 0L, 20L); // run every second (20 ticks) }

Then calling it in main as ParticleHandler particleHandler = new ParticleHandler(); particleHandler.spawnParticlesEverySecond(Particle.SCRAPE, plugin);

[buoyant viper]

bytecodeviewer?

[dry yacht]

Alrighty, I'm just gonna be real, I'm confused beyond repair, xD.

[tawny remnant]

my event isnt working and not giving any errors.
https://paste.md-5.net/sitigevuba.cs

[buoyant viper]

type erasure goes hard

[undone yarrow]

I have this list of locations, but when I try to print it, it just says '[]'. Does this mean there's nothing in the list, or am I printing it wrong? ```java
public Set<Location> scrapLocations = new HashSet<>();

public void ListLocations(CommandSender sender){
    sender.sendMessage(scrapLocations.toString());
}

[cobalt thorn]

Hi, im using a library called XParticle (https://github.com/CryptoMorin/XSeries/blob/master/src/main/java/com/cryptomorin/xseries/particles/XParticle.java) to load images

XParticle.displayRenderedImage(plugin, XParticle.renderImage(plugin.getDataFolder().toPath().resolve("test.png"), 20, 20, 20), () -> player.getLocation(), 1, period,20,20,2);

But gives a problem on the XParticle#renderImage return CompletableFuture<Map<double[], Color>>, but XParticle#displayRenderedImage wants Map<double[], Color>, cast it to it doesn't work any work around?

[buoyant viper]

original class was

import java.util.ArrayList;

public class Generics {
  public static void main(String[] args) {
    var theList = new ArrayList<String>();
    theList.add("This is a string");

    if (!theList.isEmpty()) {
      theList.forEach(System.out::println);
    }

    System.out.println("lolwat");
  }
}```

[analog thicket]

I really need some help here i would i get "Material" and "Antal"?

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

[tardy delta]

var ew

[dry yacht]

I was talking about fields and method return types, while this is a scoped variable. Maybe the whole reason why I don't get why the JVM doesn't know about these is that I confuse the JVM with what reflection builds upon. I just know that, for parameters - for example - the types are erased, while for member fields and return types they aren't. So they end up in the bytecode. Is reflection directly querying bytecode? Isn't the JVM loading this bytecode into memory and one could thus argue that it does know about them? Again, I'm just massively confused right now, xD

[regal scaffold]

Anyone have a good tool to write item lores

Like formatting, colors, etc, website or something

Cause sometimes lores are big and needs to look good

[dry yacht]

So no JVM instruction knows of these types, and they are just metadata in the loaded class in memory, which reflect accesses?

How doesn't it? It's in the classpool

that's bytecode

constantpool*

Or is bytecode just defined as actual instructions?

So reflect queries the constant pool while JVM only executes that bytecode ASM, which doesn't reference types within the classpool, but only like Object or whatever

[coral kelp]

Searching for a Developer for my server must be very good with scipts and be experienced.

[tardy delta]

?services

[undone axle]

If you wish to request or offer development/art/building/administration services, please do so at https://www.spigotmc.org/forums/services-recruitment-v2.54/

[dry yacht]

Okay, I think that's exactly what I wanted to get at, because I consider the whole class file bytecode. So it's in there, the JVM just doesn't execute anything related to that information. Reflect then goes into the parsed class in memory and looks up this meta information. Alright, that cleared things up.

I thought you meant they are erased, which is why I thought I am going crazy.

[undone yarrow]

When I run Block block = player.getTargetBlock(null, 7); Location blockLoc = block.getLocation();
I get the location of the player, not the block

The targeted block isn't 37, 66, 14

those are my players coordinates

[remote swallow]

targetted block is on the right

[undone yarrow]

what?

Even then, it doesnt do what it should

[remote swallow]

the targetted block coords are on the right of f3

[analog thicket]

Sorry for spamming, but im about to destroy my screen

[undone yarrow]

Shows, once again, that the targetedblock method doesnt do what it should

[undone yarrow]

yes?

[remote swallow]

whats the coords then

[undone yarrow]

what's your point?

Look in the chat maybe?

[remote swallow]

you sent a ss of your coords

[undone yarrow]

And of the chat

that contains the supposed coords of the block

[remote swallow]

try this instead https://hub.spigotmc.org/javadocs/spigot/org/bukkit/entity/LivingEntity.html#getTargetBlockExact(int)

[undone yarrow]

That fixes it. Time to fix my other 3 methods that arent working

[granite burrow]

Is it possible to use the Spigot API outside of Minecraft? I want to access the web API on a website to list all available plugins I have uploaded

[quiet ice]

Generics can be erased (and are erased if you use tools such as proguard correctly) by stripping the signature attribute of the class or class member.
Descriptors (not to be confused with generic signatures - which are optional) are mandatory and cannot be removed.
Local variables (including argument/parameter names) as stored in the LVT (local variable table) can be erased. The LVT may be incomplete.
That being said stackmap is mandatory on Java 7+, which stores the types of the elements in the local variable slots and of the operand stack. It does not store the generic signature of types though

[undone yarrow]

Why does this send nothing? java public void ListLocations(CommandSender sender){ for (Location location : scrapLocations) { sender.sendMessage(location.getX() + ", " + location.getY() + ", " + location.getZ() + ") \n"); } }

Even AI can't spot the mistake

[remote swallow]

scrapLocations is empty

[analog thicket]

        List<Map<?, ?>> items = configYML.getMapList("casino.crates");
        for (Map<?, ?> item : items) {
            Integer crateNumber = (Integer) item.keySet().toArray()[0];
            Map<?, ?> crate = (Map<?, ?>) item.get(crateNumber);
            String blockblock = (String) crate.get("block");
            Bukkit.broadcastMessage(blockblock);
        }

Why does crate give null? i am so confused

[undone yarrow]

No

[undone yarrow]

It wasn't empty, but it still returned nothing

[dry yacht]

Thanks for explaining that in detail! Now that I know that the generics aren't even "mandatory" on class members, could it be that we're just lucky that mojang didn't instruct their obfuscator to strip those off, since I often times rely on their existence when using reflect? That literally shattered my view of things, :-:

The more you know! :)

[quiet ice]

Notch used to back in the old days

Hence my Sl-deobf has limited use in the legacy minecraft modding scene (albeit only as a fork as it was originally meant to aid in galimulator modding)

[undone yarrow]

Ugh why can't this stupid code just work?!?!?!
This is simply supposed to add a location to the list if it doesnt exist. But everytime I type /sc add (which is the command that runs this), it keeps saying "location added to the list".

public Set<Location> scrapLocations = new HashSet<>();

    public void AddLoc(Location loc, CommandSender sender){
        if(scrapLocations.contains(loc))
        {
            sender.sendMessage("That block has already been added to the locations.");
            return;
        }
        scrapLocations.add(loc);
        sender.sendMessage("Added (" + loc.getX() + ", " + loc.getY() + ", " + loc.getZ() + ") to the list.");
    }```

[quiet ice]

But I can guarantee, if mojang still stripped generic signatures, the minecraft modding scene would look fairly different

[undone axle]

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

[crimson mulch]

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

[dry yacht]

Yep, that's exactly what I thought. Not only that it would massively increase the difficulty of reverse engineering (well, there are mappings nowadays) but it would also break a lot of reflection. I mean... if a class contains two collections, and I can't rely on field order (which I can't), how would I ever get access to the right one, without distinguishing them based on their generics. That would really force people to compile against every single version there is, in cases like these, I think.

[quiet ice]

the X, Y and Z coords are always the same?

[undone yarrow]

Yes