:=
#dev-general
prisma wave
prisma wave
imo it's one of those symbols where unless you know the language, it's not really clear what it does
prisma wave
primarily functional
could be procedural too though
and kind of pseudo-oop as well
dusky drum
hmm someone said
Kotlin is only good if you intend on using it for android dev. Aside from that it doesn't give much benefit.
prisma wave
wrong
dusky drum
well tell that to him he says thats the only benefit
prisma wave
¯\_(ツ)_/¯
hot hull
Clearly a smoother brain 
lost edge
Anyone have any idea what would cause an IOException when creating a file for a single person? My plugin works for me and others that I know use it but there is this one person who seems to get an IOException and I have no idea what would cause it.
prisma wave
depends what the exception message is?
lost edge
Well I currently don't know I cant recreate the exception and only one person out of the many who use my plugin have the issue. Could it be possible that the plugin does not have permission to create the file?
prisma wave
possibly
does it always happen for that person?
and nobody else?
oh you mean 1 user of the plugin
not 1 player
it's really hard to say, possibly
get them to send the exception?
static zealot
errant geyser
Is there anything in the Spigot API you guys don't like or think could be simplified/shouldn't need NMS? for ASF, I already asked on Reddit and that flopped, don't buuly
analog crater
There should be ways to unregister for events at runtime
errant geyser
There already are, aren't there? HandlerList.unregisterAll(yourListener) works for me, or someEvent.handlers.unregister(yourListener)
analog crater
Holy fuck. This helps soo fucking much
errant geyser
lol
hot hull
Any suggestions on how someone would improve their documentation/over all information when it comes to commits and such? Does anyone have any informative templates?
analog crater
Keep it clean concise and informative
hot hull
I mean yea but how
errant geyser
Keep it clean concise and informative
static zealot
xD
errant geyser
oooo custom entities and pathfinding
quiet sierra
pretty much
things simplified from 1.9
but 1.8 is so annoying
Literally need packets for everything
errant geyser
Well, I'd be building off of 1.16, but if you have 1.8 code for it you can submit an issue/pr and I'll add it
quiet sierra
I can't bother anymore
I'm already working o n my own server impl
Screw spigot
or mc server code
errant geyser
¯_(ツ)_/¯
quiet sierra
Does looping through constructors also include super class constructors?
Using reflections
prisma wave
reflections or reflection?
prisma wave
just they're very different things lol
and no I don't think so
since superclass constructors usually aren't applicable to their subclasses
static zealot
cmdManager.parameterHandler.register(Entity::class.java) { argument ->
// Gets the entity from the UUID
val entity = Bukkit.getEntity(UUID.fromString(java.lang.String.valueOf(argument)))
?: return@register TypeResult(argument)
// Checks if the entity is null or not and returns only the argument used
TypeResult(entity, argument)
}``` this is how it gets automatically get converted by IIJ
ocean quartz
Yeah it's better here xD
static zealot
the default example
so I have the same list of strings. How would I make them into a parameter type?
ocean quartz
I don't think you can make a List of strings a parameter type, since the argument will always be just one
viscid charm
Yo guys is it better practice to name Player player; rather than Player p;?
static zealot
I name it player myself Fresh but I saw a lot of people using p for player and e for event. I just go for the long names xD
ocean quartz
You'd probably just use String, since you'll be getting one value from the List
static zealot
Descriptive variable names are always better
also I know this from my teacher so yeah
viscid charm
I think it's more readable and moree descriptivbe
yea
Yo why do i get error when I name a variable class or inferface?
String interface;
String class;
ocean quartz
Because those are used keywords
static zealot
keywords that was the word I was looking for xD
viscid charm
so I cant have a variable named class or interface?
ocean quartz
Nope
viscid charm
Is it true that it would be safer to assume -> is a constructor rather than a method because it has capital? Hello()
helloder() <- that would be method right?
ocean quartz
Yes, classes will always be upper camel case while methods lower camel case
analog crater
^ nOoB DEvS saY nO
analog crater
"Professional " announce yourself as that when you make a living wage from it
ocean quartz
You should always assume that, if you're wrong, remove what ever api you're using xD
analog crater
And make a pr to fix it
viscid charm
yo i dont get this...
int m = 4;
int n = 5;
m = n++;
//n++ // n = n + 1,
System.out.println(m);``` Why is it returning 5? But when I do ++n, I know its post and pre increement but I just dont see n++ the value of m being 5. shouldnt it be 6?Basically it'll run like this:
m = n++;
m = n;
n += 1;
So m = 5
Which was the value of n when it was assigned to m
viscid charm
so n will be 6?
ocean quartz
Yeah n will be 6 and m 5
viscid charm
is it beetter to have say (n+2==1) or to have (n + 2 == 1)?
ocean quartz
Second imo, but that's more of preference
viscid charm
What would you call == basicaly? Would you call it same? Like 1 == 1, one is same as one?
viscid charm
Yo why does this keep printing hello infinitely on my end
for (int i=0;i<5;i++) {
System.out.println("Hello");
}
int i=1;
while(i<=5) {
System.out.println("Hello");
}```Because you never increase i
viscid charm
OHH lol true
prisma wave
In the second loop
viscid charm
Yea
Qucikq uestion ok so
for (int i=0;i<5;i++) {
System.out.println("Hello");
}
int i=1;
while(i<=5) {
System.out.println("Hello");
i++;
}```In taht code, do the i's not interfere?
both variables are named the same
shouldn't it mess anything up?
prisma wave
no
The first variable is only inside the scope of the for loop
So when you're outside the loop, i doesn't exist
viscid charm
Oh
prisma wave
The next one would if you were doing anything afterwards
onyx loom
if u want the loop to be constant until a condition changes
prisma wave
Yeah
For loops are better for predefined ranges
Eg looping over every item in a list
While loops are better for dynamic ranges
viscid charm
dynamic ranges?
quiet sierra
Think of repeating code until a condition is met
onyx loom
is good imo
viscid charm
yea repeating the code until condition is met. isn't that the same with For loop?
onyx loom
u could have it loop twice, or a thousand times
prisma wave
Yeah
quiet sierra
For loop just loops through variables
While loop executes code while the boolean is true
static zealot
yeah for just loops thru known things
prisma wave
for loops also have to define a variable
static zealot
like variables, ranges etc.
ocean quartz
That'll loop forever
static zealot
than just what for can do
quiet sierra
Which one is better?
while(true)
for(;;)
ocean quartz
None tbh xD
onyx loom
matt lol
quiet sierra
Sometimes you need while trues
viscid charm
wtf is for(;;)?
quiet sierra
defines no variable, checks no condition and changes no value
static zealot
probably an infinite loop
quiet sierra
Basically an infinite loop
viscid charm
o wow
onyx loom
in that case while
ocean quartz
A lot of the times that you need while true, you probably can find a better way to do it
viscid charm
SO you dont need a variable for a forloop?
quiet sierra
@ocean quartz How would you do this better
prisma wave
🥴
ocean quartz
A lot of the times
viscid charm
SO BASICALLY use While loop when you have a true or false thing/loop that you wanna do?
prisma wave
Probably
quiet sierra
This is just my minecraft server impl
ocean quartz
Most likely, for the ticking
quiet sierra
handshake is fun
viscid charm
rather a for a loop but, you can do that with a for loop as well right?
prisma wave
handshake is fun
@quiet sierra no it isn't
quiet sierra
It's part of handshake
The real fun begins after handshake
sending all map packets
viscid charm
Why would you use a do while loop
quiet sierra
clean code I guess
viscid charm
Just to hav ea condition run at least once?
viscid charm
Do while loop <-
quiet sierra
Same
prisma wave
I already want to die
quiet sierra
Kinda crashes my client
prisma wave
gross
Although that makes sense
Considering the wiki.vg docs aren't updated for 1.16 yet lol
Unless I was doing something wrong
lavish notch
When you say you're on X at the moment, are y'all following some course?
split talon
const log = console.log;
viscid charm
I can access any variables in a method if that method is in INSIDe the class right?
Yo why can't I do this?
class Calc {
int num1;
int num2;
int result;
public void perform() {
result = num1 + num2;
}
}
public class FirstCode {
int hello;
public static void main(String args[]) {
Calc obj = new Calc(); // The new Calc() is the object.
obj.num1 = 3;
obj.num2 = 5;
obj.perform();
System.out.println(obj.perform().result);
}
why cant I do printline of obj.perform().result?
onyx loom
i dont think u can access result variable
instead, i would recommend returning num1 + num2, then itll print out
viscid charm
System.out.println(obj.result);
works but
I am wondering why you cant do obj.perform().result
Ah is it cus of return type?
versed ridge
Because that method doesn't return anything
onyx loom
yes
versed ridge
If you returned Calc then yeah
onyx loom
System.out.println(obj.result);
works but
@viscid charm this works because its declared outside of the method
u wouldnt be able to access the variable inside the method
hence why it should be returned instead
viscid charm
int result; <- this is what you mean by "declared outside" right?
Also what do you mean hence why it should be returned instead? @onyx loom
onyx loom
int result; <- this is what you mean by "declared outside" right?
yes, that is outside of the perform() method
Also what do you mean hence why it should be returned instead?
something like
public int perform() {
return num1 + num2;
}```
and then just print `System.out.println(obj.perform()`yup
onyx loom
🙂
viscid charm
but can you do
println(obj.perform().result;?
IF you declare result in there?
like int result;?
onyx loom
i highly doubt it
viscid charm
AH so you can't really GO inside a method which is returning something
Oh rip you cant go inside a method period
onyx loom
ya
onyx loom
when u call a method all u are mainly doing is returning something or returning nothing (void) as such, there is no need to access the contents of the method itself, but rather the end result of the method
if that makes sense
onyx loom
not really
viscid charm
y shud one declare varialbes INSIDE a method?
ASSUMIGN they arent constant
you won't be able to access it
onyx loom
u should aim to have variables inside methods (and then pass the variables in parameters when needed) where possible, afaik it saves more resources
someone can correct me on stuff that im saying, im not very good myself 😅
viscid charm
o rip
OK WATHA BOUT THIS question
Also qucik question about constructors. What if you create a constructor but add a VOID return type to it. Does it just make it a method now? Or wat happens? Or even if you make it a return type.
onyx loom
example?
viscid charm
class Calc {
int num1;
int num2;
int result;
public Calc() {
num1 = 5;
num2 = 2;
}
public void Calc() {
}
}
public class FirstCode {
public static void main(String args[]) {
Calc obj = new Calc(); // The new Calc() is the object.
System.out.println(obj.num1);
}
}```See the public void Calc() {} <- ?
onyx loom
thats not a constructor?
onyx loom
oh because of the naming?
viscid charm
yea
onyx loom
shouldnt do
to access it it would just be obj.Calc() probably
and ur accessing ||(insert better word here, ur not really accessing it rn) || the constructor when initalising the class
viscid charm
yea hmm ok
So to like communicate with a class
you must intilias the class using the constructor of that class
right?
If your in another class that is.
And once you do that you can technically access or use any of the methods INSIDe that class in a different class where you initilized that class? right?
viscid charm
Class Calc {
int num1;
public Calc(int number1) {
number1 = num1;```
Whats better to do? number1 = num1; or num1 = number1;? I know it means the same thing but what do you guys prefer and if theres conventional way?Also would num1 be considered local?
class Calc {
int num1;
int num2;
int result;
public Calc(int number1) {
number1 = num1;
System.out.println("Hello");
}
}
public class FirstCode {
public static void main(String args[]) {
Calc obj = new Calc(1); // The new Calc() is the object.
}
}
distant condor
btw you can use kotlin markdown, it's a thing apparently
split talon
nhmber1 is a local variable, not num1
distant condor
anyway, by default they are private but it has getters
iirc
so it seems like it is public but kotlin actually generates getters for you
viscid charm
if number1 is a local variable which it is, WHAT would be call num1? Some say instance variable
BUT what if I didn't create new Calc(1);
would it still be called instance variable?
distant condor
is public Calc(int number1) supposed to be a constructor?
split talon
Yes any variable defined without static keyword and not in a method is an instance variable
Or constructor
distant condor
wait are you able to create constructors like that hmm
I thought you had to define it in the class xyz
and use init
yeah this code is invalid I think
viscid charm
what code/
Also would num1 be considered local?
class Calc {
int num1;
int num2;
int result;
public Calc(int number1) {
number1 = num1;
System.out.println("Hello");
}
}
public class FirstCode {
String helloder;
public static void main(String args[]) {
Calc obj = new Calc(1); // The new Calc() is the object.
}
}
wait nvm
split talon
Yeah
ocean quartz
number1 is a parameter, num1 is a field
distant condor
anyway you might want to specify private for all those values
java convention is using getters and setters and not changing it by defining it public (I think?)
viscid charm
haven't gotten to that yet
viscid charm
Is it bad to have this. FOR all fields taht your mention or instance variables inside your methods whilst assignign them to the local variable or parameter?
like
public Casio(int i) {
this.num1 = i;```as in is it bad to have just variables around in the class?
viscid charm
I didn't need to add this <-. num1 is instance variable/field btw.
No like
public Casio(int i) {
num1 = i;``` VS
```JAVA
public Casio(int i) {
this.num1 = i;```"this." is not needed in this case unless its this.i = i;
distant condor
yeah
viscid charm
Yea so would using this. be bad convention?
distant condor
using this or defining variables that belongs to the class/object?
distant condor
I'll show an example
using this
this is just more explicit
if it seems clearer, you can use it
but if you can understand what you are changing without calling this there is no use I guess
viscid charm
Hm I see, if it helps you see that it's OUTISDE of that method
I see what u mean
But someone whos experienced would definately not use this because they already know its outside. and this should generally be only used if they are the same named variables
distant condor
not definitely, but they have the choice not to use it
this is one of those conventions no one really cares about (I think?)
but try to keep it consistent throughout your project
does that answer your question?
viscid charm
What do most people use?
distant condor
Some people use this some people don't
viscid charm
I mean like majority
like if they use this as a majority
it would make more sense to use this EVEN if you dont need it because more people can understand ur code better
distant condor
this might help if your constructor has loads of variable, maybe you are doing some calculations or something in it
it is more project-dependent than anything else
if you want, you can check out some examples on github and see how people use then
I hope that answers your question?
distant condor
static just means the method/variables will belong the the class, not the object
so you don't need to instantiate it by calling the constructor
you call the method directly to the class
you don't call it on an instance of that class
viscid charm
Hmm you said u dont need to instantiate by claling constructor OK so
class Emp {
int eid;
int salary;
static String ceo;
public static void shtatic() {
System.out.println("Static");
}
public void nonStatic() {
System.out.println("Not Static");
}
}
public class StaticDemo {
public static void main(String args[]) {
Emp.shtatic();
Emp.nonStatic();
}
}```AHH so the Emp.nonStatic(); won't work without calling the constructor and creating an object
So i'd need to add:
Emp obj = new Emp();
obj.nonStatic();```I have heard static abuse. What does that mean btw? Are static's bad? Isn't it good that you don't need to create "new EMP();" because wouldn't that take up more space/
quiet depot
don't worry about it taking up more space
viscid charm
wait so you can't access non static variables in a static method correct? Theres no OTHERT way other then to make the varaible static to access that variable?
quiet depot
static's aren't bad, it's just recommended you avoid them till you fully understand how they work
viscid charm
public class StaticDemo {
int i = 0;
public static void main(String args[]) {
i = 1;
Emp.shtatic();
Emp obj = new Emp();
obj.nonStatic();
}
}
Like that
quiet depot
yeah that wouldn't work
quiet depot
new StaticDemo().i = 1;
viscid charm
public class StaticDemo {
int i = 0;
public static void main(String args[]) {
i = 1;
}
}```but obviously that only changes i for the instance of StaticDemo you just created
viscid charm
Oh like this
public class StaticDemo {
int i = 0;
public static void main(String args[]) {
StaticDemo satatic = new StaticDemo();
satatic.i = 1;
}
}```yes
that'd change the value of i for the instance of staticdemo you're creating
if you created another instance of staticdemo, i would be 0, whereas your old instance would still be 1
quiet depot
oh btw, in our conversation the other day, I mentioned ids
technically java does have ids, but they're obviously not numbers
1 - 3
they are numbers, just not like that, they called hashcodes
viscid charm
wait so
if its static
i create another method
and make i = 1;
i will be even in other methods
is what ur saying right?
quiet depot
just write the code out
viscid charm
public class StaticDemo {
static int i = 0;
public static void main(String args[]) {
StaticDemo satatic = new StaticDemo();
satatic.i = 1;
}
}
would thsi work?
tacit cave
oh thanks.
obtuse gale
Thats just a guess tho
viscid charm
I see what u mean @quiet depot
public class StaticDemo {
int i = 0;
public void show() {
System.out.println(i);
}
public static void main(String args[]) {
StaticDemo obj = new StaticDemo();
obj.show();
obj.i = 0;
obj.show();
}
}
where as if it was static and you changed it inside the method it would actually be 1
viscid charm
Yo i don't get the obj.new concept
Outer obj = new Outer();
Outer.Inner obj1 = obj.new Inner();```new Outer.Inner();
viscid charm
What does new exactly mean?
I get that Outer is the class reference, obj is name of the reference, i dont get what NEW means. but I get Outer() is the constructor.
quiet depot
new literally just means construct a new instance
new allows you to call a constructor
to get an instance
viscid charm
ok then what is obj.new?
quiet depot
that's not valid java
quiet depot
Outer.Inner obj1 = obj.new Inner(); this is not valid java
viscid charm
public class StaticDemo {
//variables, methods, class
public static void main(String args[]) {
Outer obj = new Outer();
Outer.Inner obj1 = obj.new Inner(); // Outer.Inner obj1 = new Outer.Inner();
obj1.display();
}
}```It works for me
viscid charm
class Outer {
class Inner {
Inner() {
}
public void display() {
System.out.println("In Display");
}
}```Outer.Inner obj1 = new Outer.Inner(); do this
viscid charm
No
thats if its static
You do that if its static
BUt let me try it
Outer.Inner obj1 = new Outer.Inner();
oops
No enclosing instance of type Outer is accessible. Must qualify the allocation with an enclosing instance of type Outer (e.g. x.new A() where x is an instance of Outer).
If I make inner class static
then it works
static class Inner {
quiet depot
k
viscid charm
But I just dont see
quiet depot
what don't you see?
viscid charm
Outer.Inner obj1 = obj.new Inner();
Understnad the obj.new Inner(); part
quiet depot
well frankly I didn't even know that was valid syntax until now
but I can make an educated assumption
Inner is not static, as you said, and is therefore bound by the instance of it's upper class
so in order to construct an instance of inner, you first need an instance of Outer
obj is your instance of outer
so, obj.new Inner();
however, I'd just like to point out, I've never seen this sort of system used once in my entire time coding in java
there's probably a very good reason for that
viscid charm
What do you mean this "therefore bound by the instance of it's upper class"
IF it was static
it wouldnt be bound by the instace of it's upper calss?
viscid charm
So in other words we can say, static doesnt require a new instance right?
quiet depot
yes
viscid charm
So it requires a new instance of it's upper class is what you meant. when you said the bound part.
So
Outer.Inner obj1 = new Inner(); wouldn't work because it needsthe instance of outer and obj.
OK i see that now
took a while xD
had to read what u wrote many times and see it x_x
BUT what do we needa do this?
i dont get this part
Outer.Inner obj1 = new Outer.Inner();```FOR static class
if it's static why do we need the "NEW" stuff
aka the instance stuff
quiet depot
the class is static, that doesn't necessarily mean it's properties are
generally static classes are preferred iirc
viscid charm
wait what do u mean iirc?
quiet depot
if i recall correctly
quiet depot
java
viscid charm
Ok but like what is static abuse then?
quiet depot
the misuse of static as an access modifier, instead of what it actually is, a memory tool
viscid charm
What do you mean by memory tool?
quiet depot
Java's memory usage is automatically managed, by something called a garbage collector
not all languages have this
for example, c
you have to manually remove your data from memory
and manually add it
with java, it's not like that
you create an instance, and the jvm handles the memory portion of it
when that instance is no longer needed, the garbage collector automatically removes it
static things, can not be garbage collected (unless you kill their classloader, this is somewhat irrelevant though)
this is a MASSIVE oversimplification
because the simple fact is, it's not beginner friendly
quiet depot
erm
yeah I suppose so
that's why so many people use it by accident
they see static, and see that it easily allows them to pass instances around
but they don't realise what static is actually doing underneath
which can lead to memory leaks, and semantic issues
i.e. static abuse
quiet depot
which is why we strongly recommend you completely avoid static until you fully understand how it works
yes, you can code without ever using static in java
quiet depot
yep
viscid charm
I see
quiet depot
It's important to note, static isn't bad
it's just hard to understand
and therefore beginners should avoid it
viscid charm
yo what does the : mean for the for each loop or the for enhanced loop
viscid charm
yea
surreal quarry
think of it as the word in
for String s in someListOfStrings
then you loop through that entire list of strings
and do something with each string
viscid charm
its only meant for arrays or lists right?
surreal quarry
maps, arrays, lists, etc. anything that stores multiple things
thats not a great way to explain it but hopefully it gets the point across lol
viscid charm
So basically
For String s : ListsofString)
Loop through Reference Name of reference In Collection of Things.
What is s used for tho?
quiet depot
String s is a variable
surreal quarry
yea thats a goo way to explain it
the s is the string itself
old wyvern
Looping through a collection or array
its called an enhanced for loop or in some other languages, a for each loop
viscid charm
ok but what would we do with the s in the loop?
surreal quarry
depends
quiet depot
that's the variable
String s is a variable fresh, equal to the element of the current iteration
old wyvern
the s is an element in the list
viscid charm
No i get its the name of hte variable
String is reference type of String
so if I have print s
it owuld print out everyt possible thing in the list/collection?
old wyvern
yes pepp
viscid charm
This can also be achieved via For Loop tho right?
old wyvern
Yes
surreal quarry
this is a for loop
old wyvern
Not in all cases possibly
Sets, you will most likely go with the iterator and while loop or something if not enhanced for
coz the for loop approach depends on having an index
you cant fetch a set element with a index
drowsy widget
https://www.spigotmc.org/resources/trollcommands-troll-your-frenemies.24237/
Would it be possible to make the plugin above with no commands and instead have all the of the features be enacted at a random time?
distant sun
Does java compiler cast objects to the required value, for example JavaPlugin to Plugin, or that's just the decompiler or anything else?
quiet depot
bit of both
distant sun
Interestig
tacit cave
if(e.getBlock().getType() != null && e.getBlock().getType() == Material.IRON_ORE) {
if (e.getBlock().getLocation().getChunk().getBlock(3, 3, 3).getType() == Material.ACACIA_DOOR) {``` is this correct? xDyou need to check if the block is null before access other methods such as getType
viscid charm
Yo @quiet depot someone on here said that whenever you can, you should create local variables/ variables inside methods rather than having instance variables/fields? To be more optimized/use less resources?
Is this true?
distant sun
Isnt it the other way around?
The compiler will do some optimizations for you anyways
viscid charm
I thought it was other way around
but, dude said that
You should always access your variables via getter/setter methods right?
distant sun
Yes, public mutable fields arent good.
regal gale
@regal gale lol why not just to MemorySection#getValues?
@prisma wave you would need another recursive anyway, as value could be another MemorySection
viscid charm
yo what does SOmething#getSomething mean?
I see people do that a lot but i dont get it
distant sun
Method reference
viscid charm
Dont get it what do u mean by reference?
MemorySection <- Would be the name of the class or method?
and getvalue is name of the ^?
distant sun
ClassName#methodName()
Method methodName from class ClassName.
viscid charm
class A {
public void show() {
System.out.println("in A Show");
}
}
public class StaticDemo {
public static void main(String args[]) {
A obj = new A()
{
public void show() {
System.out.println("in sadgsg");
}
};
obj.show();
}
Why is the new A() {}; considered a class?
distant sun
Doesnt that only apply to Interfaces?
viscid charm
No it can also work with class
its called an anonymous class
Do we use many lambda expressions in minecraft plugins? It only applies for functional interfaces right so if they only have 1 abstract method?
old wyvern
functional interfaces
Lambdas apply to only interfaces with a single non-default function
viscid charm
yea i tested it on abstract class and it didn't work
old wyvern
Yes
viscid charm
Oh iw as just wondering if you could add lambda to abstract
old wyvern
No
viscid charm
Is lambda like faster or something?
old wyvern
No just more readable
old wyvern
No?
hot hull
So I've got a slight issue, when placing the block I get the first location, and when I break it I get the second one, issue now is that I use a location to identify a spawner there, and since the locations don't match (even though they should), it completelly breaks
[1] Location{world=CraftWorld{name=world},x=-250.5,y=64.8999969959259,z=42.5,pitch=0.0,yaw=0.0}
[2] Location{world=CraftWorld{name=world},x=-251.0,y=65.0,z=42.0,pitch=0.0,yaw=0.0}
I have to somehow normalize the location which is given when a user places the spawner, yet I've no idea how I'd do that
Also, the fuck is this, one rounds up, the other down?
42.5 -> 42.0
250.5 -> 251.0
hot hull
Normalizing the location, yet it still prints out decimals so..
private Location normalize(final Location location) {
location.setX(location.getBlockX());
location.setY(location.getBlockY());
location.setZ(location.getBlockZ());
return location;
}
output: Location{world=CraftWorld{name=world},x=-258.5,y=64.8999969959259,z=42.5,pitch=0.0,yaw=0.0}
hot hull
I'm hella confused
hot hull
Some weird shit is going on..
dusky drum
oke so how i get block locations is
(kotlin)
block.x
block.y
block.z
?
and why do you normalize locations, how do you get those locations=
use
block.getLocation()
hot hull
That's what I'm using yes.
dusky drum
interesting
so example
val cropLocation = CropLocation(base.x, base.y, base.z, base.world.name)
For me prints
x = 5
y = 5
z = 20
i dont get decimals
val base = event.block.getRelative(BlockFace.UP)
i dont like normalize locaitons
hot hull
I mean yea because you create a new location
dusky drum
thats seperate class, smaller since i dont need yaw and pitch
but both dont give decimals for me
tacit cave
can we check a brekead block with itemstack?
tacit cave
HeadDatabaseAPI api = new HeadDatabaseAPI();
ItemStack NetherGenerator = api.getItemHead("39000");
if (block.getType() == NetherGenerator) {```maybe we can't check a block that is custom like heads
dusky drum
type is always gona be head, you have to check its blockdata?
type is just gonna be PlayerHead
hot hull
Also, lowerCamelCase plz, ktnxbye
tacit cave
HeadDatabaseAPI api = new HeadDatabaseAPI();
ItemStack NetherGenerator = api.getItemHead("39000");
if (block.getData() == NetherGenerator) {``` depricated ;/Anyone know hwy this throws an error? Is it a java 1.8 bug?
public class StaticDemo {
public static void main(String args[]) {
int i, j;
i=8;
j=0;
try {
int k = i/j;
if (k == 0 ) {
throw new CustomException("This is not possible");
}
}
catch(CustomException e) {
System.out.println("Error" + e.getMessage());
}
System.out.println("hello");
}
}```what type of error does it throw?
dusky drum
so then he just needs to check for that error, thats basic since you cant devide something by 0.
hot hull
Indeed
viscid charm
catch(Exception e) { seems to work
but the catch(CustomException e) {
says the arthemitic error
hot hull
Well catch the other error
viscid charm
wat do u mean?
dusky drum
instead of using Customexception use ArthemeticException....
viscid charm
yes.. I know that tho lol
hot hull
I mean what's the issue then?
viscid charm
Exception in thread "main" java.lang.ArithmeticException: / by zero
at me.freshpeppermint.StaticDemo.main(StaticDemo.java:13)
thats what it says when I run it
hot hull
Gasper..
hot hull
^
viscid charm
To learn about CustomExceptions
hot hull
I don't think you can just go around throwing your own exceptions to bypass others
dusky drum
anyone knows why when blockgrowevent is triggered by melon/pumpkin growing the block that grew is AIR?
its not pumpkin or melon
viscid charm
https://youtu.be/KFoN6hQ3yAs?t=151 works for this guy
How do I cahnge java versions?
in eclipse
obtuse gale
Dont use eclipse
Also it works for him since j isnt 0
You cannot divide something by 0, and as such the Arithmetic exception is thrown
viscid charm
Ah I didnt see that my bad
Hey guys I heard this is bad to do, why. And why is this other thing a better solution?
public class ConfigValues {
LitTestPlugin main = new LitTestPlugin();
public String configString() {
return main.getConfig().getString("String");
}
public String getitemName() {
return ChatColor.translateAlternateColorCodes('&', main.getConfig().getString("itemname"));
}
}```does LitTestPlugin extend javaplugin?
hot hull
LitTestPlugin main = new LitTestPlugin();
If it's your main, this ain't it chief
viscid charm
yea
quiet depot
it's not bad practice, it simply doesn't work
viscid charm
public class ConfigValues {
private LitTestPlugin main;
public ConfigValues(LitTestPlugin main) {
this.main = main;
}
public String configString() {
return main.getConfig().getString("String");
}
public String getitemName() {
return ChatColor.translateAlternateColorCodes('&', main.getConfig().getString("itemname"));
}
}```that's better
you can't initialize your main class in plugins
you can only pass it's instance around
viscid charm
Oh cus its an interface?
quiet depot
No
viscid charm
oh then why?
quiet depot
spigot just prevents more than one instance of JavaPlugin existing at runtime
it's called a singleton
viscid charm
Whats another alternative to what I just did there?
quiet depot
https://discordapp.com/channels/164280494874165248/695431668944732270/744487199826903130 this is what you should do
hot hull
Dependency Injection
quiet depot
main can be final though
hot hull
sTaTiC
quiet depot
You can retrieve an instance of your javaplugin class via JavaPlugin.getPlugin
JavaPlugin.getPlugin(LitTestPlugin.class)
you can use a dependency injection framework (like guice)
you can create your own static instance getter
there's many options
stick with dependency injection though
viscid charm
whats dependency injection?
hot hull
?java-dependency
compact perchBOT
FAQ Answer:
hot hull
smh
viscid charm
Doesn't final mean it's a constant?
quiet depot
no
a constant is static and final
final alone, simply means the variable is immutable
viscid charm
so anything that doesnt change should have final next to it
quiet depot
yes
you should make absolutely everything final by default, except for methods/functions
it's redundant to make methods/functions final, because your classes will be final
if your class isn't final, then those methods/functions are obviously meant to be extended, so still redundant to make them final
viscid charm
i forgot what fucntions were. What are functions again?
quiet depot
static methods
viscid charm
Ah ok
lunar cypress
Technically the term function does not exist in java terminology
Except with functional interfaces perhaps
viscid charm
Having trouble seeing/understanding this tho.
public class ConfigValues {
private final LitTestPlugin main;
public ConfigValues(LitTestPlugin main) {
this.main = main;
}```But static methods are still called methods
quiet depot
yeah
not official naming, but I swear by it, because it makes sense
and most people will understand it
viscid charm
y do we need this
public ConfigValues(LitTestPlugin main) {
this.main = main;
}```
WHEn we already have this:
```JAVA
private final LitTestPlugin main;```cuz u have to assign a value to the field main
otherwise it's just an empty variable declaration
viscid charm
Hold up why does private int a; not give an error?
quiet depot
because it's not final
a final variable has to be assigned a value
non final variables do not
viscid charm
private final LitTestPlugin main;```
What is that saying technically?
like private access modifier, final is to signify no change, LitTestPlugin , main is the name of the reference.nvm i just realised its class is what it's staying
Reference to a class
Ok why do we have these 2 values in the brackets?
public ConfigValues(LitTestPlugin main)```
cant we just use a default constructor with no parameters?technically you can store the main plugin instance as a constant
private static final LitTestPlugin MAIN = JavaPlugin.getPlugin(LitTestPlugin.class);
as a beginner though, it's crucial that you get used to dependency injection
as you'll need to use it everywhere else
viscid charm
Ok but why are we doing the dependency injection here?
private final LitTestPlugin main;
public ConfigValues(LitTestPlugin main) {
this.main = main;
}```
Do you know? You do this to communicate with the other classes? And why is it on a constructor? Can't you basically create a method instead for it?You need to look at both sides of it, the class you're using DI in, and the class you're initializing your other class in
viscid charm
Can you have a method inside method btw?
obtuse gale
dont think so
errant geyser
You can in Kotlin, but idk why you'd want that
viscid charm
Yo how come this is not working
public class TestCode {
public void show() {
System.out.println("Okay!");
}
public static void main(String args[]) {
TestCode obj = new TestCode();
obj.show();
}
}
class Hello {
private final TestCode classname;
public Hello(TestCode classname) {
this.classname = classname;
}
classname.show();
}```the classname.show() <- part
lunar cypress
Well if you wanna count lambdas or anonymous/local classes you can
errant geyser
PepperMint, you can't run code outside of blocks
viscid charm
wat do u mean?
errant geyser
well, you can't run the classname.show() code outside a block like you are doing, hence it doesn't like it
viscid charm
wat do u mean by a outside a block?
errant geyser
"A block in Java is a group of one or more statements enclosed in braces. A block begins with an opening brace ({) and ends with a closing brace (}). Between the opening and closing braces, you can code one or more statements"
viscid charm
O
errant geyser
Take your constructor and main function as an example of one
viscid charm
public class TestCode {
public void show() {
System.out.println("Okay!");
}
public static void main(String args[]) {
Hello obj = new Hello(X);
obj.hello();
}
}
class Hello {
private final TestCode classname;
public Hello(TestCode classname) {
this.classname = classname;
}
public void hello() {
classname.show();
}
}```what would I put in X?
Hello(X);
errant geyser
this
viscid charm
What would this mean in THAT scenario?
errant geyser
this would refer to the TestCode class
viscid charm
public class TestCode {
public TestCode a;
public void show() {
System.out.println("Okay!");
}
public static void main(String args[]) {
Hello obj = new Hello(a);
obj.hello();
}
}
class Hello {
private final TestCode classname;
public Hello(TestCode classname) {
this.classname = classname;
}
public void hello() {
classname.show();
}
}```that would work?
having a instead?
cus I put public TestCode a;
dusky drum
TryAndSEE
viscid charm
but it says cannot chance static reference to non static thing
dusky drum
oh
errant geyser
public TestCode a; that would just be null
errant geyser
Would still just be null
errant geyser
I did say twice it would be null
Because you never instantiate it
public TestCode a; is the same as doing public TestCode a = null;
viscid charm
hmm I still don't get what goes inside the Hello() <-
errant geyser
this
viscid charm
Cannot use this in a static context
viscid charm
BUT this wouldnt return null btw?
and the other thing I said would?
Why wouldn't this return null as well?
errant geyser
this is a Java thing, it's never null.
viscid charm
o
errant geyser
It always points to an instance of the class you use it in
public TestCode a = this; and then passing in a might work.
I only really do stuffs in Kotlin now and we don't really have static. Our mains are literally just
fun main(args: Array<String> (<- optional btw)) {
//do whatever
}``` so `this` is perfectly valid for us Kool Kotlin Kidsjust make new class and initialize everything there thats how i used to do.
viscid charm
No i am like trying to see
private final TestCode classname;
public Hello(TestCode classname) {
this.classname = classname;
}
that part to understand it a bit better
whilst keeping the code as simple as possible
dusky drum
rip
lunar cypress
It does
errant geyser
So what have I done wrong
lunar cypress
Prefix it with ./
errant geyser
Still doesn't like it
lunar cypress
Can you send a link to the repo
errant geyser
errant geyser
yeah thats what I tried
dusky drum
hbahahaha
errant geyser
Thats idiotic, thanks
dusky drum
XD
oh if you need more infO:
https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/about-readmes
lunar cypress
Ah well url encoding
dusky drum
yeh
dusky drum
XDD
lunar cypress
What do we learn from this? Don't use spaces in file names
dusky drum
indeed
tacit cave
one more simple question
!= means false, == means true, || means or, && means and, am i right?
obtuse gale
yeah
dusky drum
lets say it that way yes, but for me != means not equal and == means equal.
obtuse gale
!= if it doesnt equal == if it does if this is || or if this is if this is && and this is
dusky drum
anyone has any good formula for leveling like how much xp for each level?
old wyvern
dusky drum
not mc one
old wyvern
oh?
dusky drum
i need it for something else
dusky drum
ye but i cant find good one
dusky drum
either i get to small amount of xp or to big of a change between levels
old wyvern
consider one axis to be level and the other experience
Work on making a curve
And choose what seems right
dusky drum
i think this is kinda broken:
old wyvern
what is?
old wyvern
oh god
lunar cypress
This is not broken
old wyvern
Dont use too high exponents
lunar cypress
But not suitable for levels
old wyvern
oh it was raise to 2
lunar cypress
2 is not a high exponent lol
old wyvern
I saw it as 2 * 100 xD
prisma wave
@regal gale pretty sure getValues(true) will get literally every value, no recursion necessary
onyx loom
who the frick downvoted papi 3 in showcase
lunar cypress
getValues() returns a map
regal gale
It isn't making any difference dude...
You would get this later on anyway: Map<String, MemorySection>
prisma wave
I'm not sure that's what happens with getValues(true)
It'll flatten the keys and just use a Map<String, Object> afaik
regal gale
It is a different story with this for example:
data:
data1: "Hello"
data2:
- Hi
- property: Hello
- Hello2
data1 will return a normal String object, but with data2, it will not be recognized as a full Array, as there is another property inside
heady birch
who the frick downvoted papi 3 in showcase
@onyx loom 😠 my beautiful api 😦
onyx loom
😭
hot hull
He already did in #off-topic
obtuse gale
imo its solving a problem that doesnt exist
onyx loom
signal tinsel
Doing some fun shit with commands lol
dusky drum
owo level xp circle isnt prfectly centered
signal tinsel
Owo I just made an auto command/listener detection system (injecting variables) without reflections
Out of boredom
heady birch
sound in java is trash
dusky drum
why?
heady birch
this application has an alarm system and it crashed while running and this super loud screeching just kept going
dusky drum
idk what ya doing
quiet depot
Owo I just made an auto command/listener detection system (injecting variables) without reflections
@signal tinsel how's it work?
quiet depot
how does it work behind the scenes lol
heady birch
NerdCon
quiet depot
idc about the api
quiet depot
how does it find the classes?
signal tinsel
Uhh i use guavas classpath
quiet depot
oh
careful with that, I've always had issues with it when using it in spigot plugins
I gave up on classpath scanning ages ago, ended up just recursing through the jar itself to find classes.
quiet depot
dusky drum
i love how mc added support for animated "world maps"
vast pilot
is 1.16 ready?
old wyvern
wdym?
vast pilot
does it support 1.16?
old wyvern
What are you referring to by it?
vast pilot
ChatReaction 1.8.0
old wyvern
It does not say so on the plugin thread but seems to work fine on my server
pastel imp
another question of the day: is it a good idea to merge like 5 plugins into a "core" plugin and only have one plugin?
heady birch
no
signal tinsel
@quiet depot aight ima try ur thing
Update, @quiet depot ty, also works
Tbf ACF is good
Rewriting my prison plugin
Tbh its less of a server now tbh
Its more of a side project for fun
To experiment with
I wanna add things to my GUI framework tbh, its fairly simple rn
dusky drum
anyone has any good GUI framework?
signal tinsel
I have one
heady birch
Niallgui
dusky drum
whats the sound for tool break?
glad spear
Doesn’t Matt have a framework
steel heart
I’d recommend looking into Mfgui, helper, Smartinvs, vignette, if, inventorygui, Canvas
heady birch
if?
ocean quartz
InventoryFramework
glad spear
if then if then if then else if then if
heady birch
canvas?
ocean quartz
steel heart
glad spear
Tf, did that just embed and then disappear for anyone then
glad spear
Sounds dumb 
pastel imp
another question of the day: is it a good idea to merge like 5 plugins into a "core" plugin and only have one plugin?
no
@heady birch why isn't it?
hot hull
Well I mean if it's for a private thing it makes sense, not always the cleanest thing tho
steel heart
^ often if you aim to make a public plugin it should only have 1 core feature
The server owner will most likely already have a plugin for that other feature
prisma wave
SRP should apply to plugins too
A plugin should do 1 thing well, rather than many things poorly
steel heart
I mean sure but be sure to keep a good structure
pastel imp
and the plugins are with almost the same objective
hot hull
BM, I mean if you split it up properly you can still abide by it
pastel imp
as "core" systems
sooo
what's the answer
xd
I mean sure but be sure to keep a good structure
and yes
that's why I want it to be in one single plugin
cause I have methods that I use in both
soo
ye
I want to compact it
steel heart
Go ahead, it’s private anyways so creating a bunch of stuff like making 5 invidual plugins is quite unnecessary in your case is only going to slow you down.
steel heart
Just put it all in one plugin but keep it maintained
hot hull
Location{world=CraftWorld{name=world},x=-256.5,y=67.8999969959259,z=41.5,pitch=0.0,yaw=0.0}
Location{world=CraftWorld{name=world},x=-257.0,y=68.0,z=41.0,pitch=0.0,yaw=0.0}
@prisma wave I still don't know what to do about this.. I tried rounding it myself but it still doesn't change the location printout
pastel imp
you mean organized?
steel heart
Yeah
pastel imp
I mean rlly depends
steel heart
Yup
pastel imp
but ye