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Lua - Reddit
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News and discussion for the Lua programming language.

Subreddit: https://www.reddit.com/r/lua

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Need help with images

I am incredibly new to Lua. Like so very very new. like i know nothing. I am learning to code, my programs are love2d to load the game and visual studio to write it

I have the image i want in the file (as seen below, ignore the name for it i was tired.), but im not sure how to load it onto the actual screen of the game. Ive tried loadfile(yummy.jpg, bt, any) after the function with an ending but nothing happens. help is very much appreciated :)

https://preview.redd.it/8wfgr3sxs30g1.png?width=175&format=png&auto=webp&s=935f048738bf34fe2d4be93e90d078964770d91c



https://redd.it/1os1ime
@r_lua
Syntax conventions, string.foo(bar) vs bar:foo()

I'm primarily a Python programmer but I've been learning Lua for various reasons and I am coming to appreciate its sleek nature the more I use it.

That said, I'm grappling with the different syntax options that Lua provides. In the Pythonic mantra, the line There should be one-- and preferably only one --obvious way to do it. comes to mind; while it is nice to have options I feel like I should choose one way or another and stick to it. Is this how Lua programmers typically operate?

If I were to stick with one, which to do? Again referencing the Pythonic way, we have Explicit is better than implicit. and Sparse is better than dense. and Readability counts., which to me would point to using string.foo(bar) instead of the : syntactic sugar, but it also isn't quite as compact.

What are your thoughts? Am I just overthinking things and applying Pythonic logic where I shouldn't? How do Lua programmers typically write their code?

https://redd.it/1osu6zj
@r_lua
What’s a Lua feature you wish other noscripting languages had?

Lua’s simple but powerful what part do you miss elsewhere?

https://redd.it/1otfgqi
@r_lua
I coded the Collatz conjecture in Lua, please give feedback

I am a lua developer and to test my abilities I decided to code the Collatz conjecture, it's available on GitHub
It's a simple code but I am just testing my skills, if you find any way I could make the code better tell me.
Thanks
Here's the GitHub: https://github.com/Gs-pt/Collatz-conjecture?tab=readme-ov-file

https://redd.it/1othc9l
@r_lua
Im new to all coding and i want to make a game of my own

How do you guys suggest that i learn the language?

https://redd.it/1otmnvz
@r_lua
Help please (scoping)

What is scoping and is it really essential to know when you noscript?

I really can’t understand it so I’m planning to learn it when I understand more things

Or do I have to understand it before I get into more stuff?

https://redd.it/1owixtg
@r_lua
Need to edit a noscript so it only runs on Weekdays

I know absolutely nothing about noscripting. I was able to take a sample noscript and edit it to turn outlets on a network power strip on and off at certain times, but I don't know how to tell it to only run on weekdays. The noscript is

function outletonschedule()

for i,t,data in event.stream(event.localtime({hour=10,min=00})) do
outlet[1].on()
end
function outlet
offschedule()

for i,t,data in
event.stream(event.localtime({hour=17,min=00})) do
outlet1.off()
end
end

Reddit formatting is mangling it a bit, but those are two commands to turn outlet 1 on at 10a and off at 5p.

Can anyone show me how to edit the above to only run M-F?

Thank you

https://redd.it/1own2aq
@r_lua
Tengo un fallo en mi noscript

es una calculadora con un bucle while pero en vez de calcular arroja un montón de texto

https://redd.it/1owpcm4
@r_lua
Love2d help

Im using love2d. How can i use love.filesystem.read to read only numbers and only certain lines (im trying to read from a .lua file)

https://redd.it/1oxvott
@r_lua
Lua Programming Gems book for a newer Lua programmer?

I'm still fairly new to Lua and have been working my way through the official book, remaking some of my Python programs and writing new noscripts to learn the language. I came across Lua Programming Gems from Feisty Duck and wanted to see what you guys thought of it. Would it be good for an otherwise experienced programmer learning Lua or should I hold off until I know the language better?

https://redd.it/1oz0w41
@r_lua
Would learning Lua effect my c++ learning journey

So i wanna learn Lua to use it on fantasy console and maybe make some Roblox games, I heard it was really easy but I'm afraid it could effect my c++ learning journey
What do you think

https://redd.it/1oz97mr
@r_lua
local variable in interactive mode

Why in the second line, the variable `a` becomes `nil`?

~ $ lua
Lua 5.4.7 Copyright (C) 1994-2024 Lua.org, PUC-Rio
> local a = 123; print(a)
123
> print(a)
nil

https://redd.it/1p00yzm
@r_lua
Is lua a good option for me?

Hi friends, i'm a Java/kotlin developer, most of the time i'm using Spring boot to make projects.

But recently i was searching for an easy 2 learn language for me to use It as a lab language, to learn web architecture without the opinative way from the Spring, and learn some other things like graphical programming, games and desktop programming(and a bit of DSA too).

My First ideia was lua because everyone say that Its a simple language and because Its from Brazil(my country).

I would appreciate any opinion.

https://redd.it/1p1d61d
@r_lua
Looking for someone that could do a Serious Sam 4/Serious Sam Siberian Mayhem dynamic bones mod which mainly consists of Lua noscripting.



There was a mod of it done in an earlier game that uses the same engine, here's the link to the mod, do let me know if it's possible to do it in the newer games too! https://steamcommunity.com/sharedfiles/filedetails/?id=1304802396

https://redd.it/1p1fppk
@r_lua
How do I noscript for Roblox?

Can you guys help me please, I really wanted to make a noscript for Roblox but I don't know how to do it, in fact I don't understand anything about programming and I don't have a PC to do this, but if anyone knows how to make a noscript for Roblox on their cell phone, please teach me how to create one, I would like to take a course for that but it's very expensive and I can't afford one.

https://redd.it/1p1kutb
@r_lua
Localizing

Will localizing hot table lookups be faster?
VM.Register = {}
local Register = VM.Register


https://redd.it/1p1w5rh
@r_lua
I need help compiling a program from GitHub.

I want to decompile several Lua files. I found a page, luadec.metaworm.site, which had a GitHub repository: https://github.com/metaworm/luac-parser-rs

, so I went there, and that led me to believe it could be compiled, so I tried it (I've never done it before). This program uses Rust; I downloaded everything, even the night version, and it doesn't work when compiling. I got these errors, and of course, I don't know anything about this:

let (mut input, out) = le_u8(input)?;

...

(input, out) = complete::le_u64(input)?;

p.as_ptr().sub_ptr(input.as_ptr())

The thing is, I want to remove the censorship from a game, and I need to create a file to batch decompile it.

https://redd.it/1p1z2vh
@r_lua
Looking for a better pure Lua library for handling large numbers

Hey everyone, I’m looking for a pure Lua library to handle really large numbers, something easier to use.
The old library I was using (int) sometimes loses precision when dividing large numbers, so I need something more reliable.

Anyone has recommendations or alternatives?

https://redd.it/1p26lcr
@r_lua