Adding of lua plugins support for the C/C++ application

Guys, what would you recommend for developers who want to support Lua plugins in their desktop applications? Any best practices or examples to start?

https://redd.it/1h1x1ch
@r_lua

Redbean + Fengari = fun

I've posted several times on here lately about fengari, but I haven't mentioned Redbean and I don't see a lot of reference to it in the sub.

Anybody else using these two together?

https://redd.it/1h1wivb
@r_lua

lua-language-server cant be called even after adding to path in windows
https://redd.it/1h20r2d
@r_lua

Weird Lua file

Hi! i opened a .lua file and it looked like this :

LuaQ P A@ € E € \€ … ÁÀ œ€ Š܀ AA  E  \ … ÁÁ œ Š܁ B A‚ ‚ E Â \‚ …B Á œ‚ Å C ܂ Ƃà ܂€ à Eà F Ä ZC €B C ˆ AC ƒ Eà F Ä €Ä À €KÃD Á \C€ @ €KCE \C d € € € Š ‡ƒ

i used unluac tool, and i got a more readable version of it.

If i would like to get back to that version ? what should i do ?
can someone tell me if it has been encrypted or it is compiled code?

Thanks a lot in advance

https://redd.it/1h2p9lg
@r_lua

Does anyone have any experience with MapleStory worlds orhave any input about doing this as a project.
https://redd.it/1h2rheo
@r_lua

luajit autogui, how to use it

i recently came accross this github post. i need help cuz idk how to use it or does it even work

https://redd.it/1h3ccvl
@r_lua

Is this extension idiomatic Lua? Will it do more harm than good?

C-extension, isstring.c:

#include "precompile.h"

static int isstring (lua_State *L) {
luaL_checkany (L, 1);

/*
int lua_type (lua_State *L, int index);

Returns the type of the value in the given acceptable index, or
LUA_TNONE for a non-valid index (that is, an index to an "empty"
stack position). The types returned by lua_type are coded by the
following constants defined in lua.h: LUA_TNIL, LUA_TNUMBER,
LUA_TBOOLEAN, LUA_TSTRING, LUA_TTABLE, LUA_TFUNCTION,
LUA_TUSERDATA, LUA_TTHREAD, and LUA_TLIGHTUSERDATA. */

lua_pushboolean (L, lua_type (L, 1) == LUA_TSTRING ? 1 : 0);
return 1;
}

int luaopen_isstring (lua_State *L) {
lua_pushcfunction (L, isstring);
return 1;
}

Yes, this can be done in Lua. But to allay efficiency concerns.

usage:

local isstring = require 'isstring'
string.is = isstring

assert (string.is 'adsfasdf')
assert (string.is (9) == false)

for i, v in ipairs {'asdvxc', string, string.is} do
if string.is (v) then print ('is a string:', v)
else print ('not a string:', v) end
end

-- optional metatable.__call
local meta = getmetatable (string)
if not meta then
meta = {}
setmetatable (string, meta)
end
meta.__call = function (self, v) return isstring (v) end

assert (string 'asdfasdf' == true)
assert (string (9) == false)

old = "if type (x) == 'string' then"
new = 'if string (x) then'

print (table.concat ({
'\n-------------------------------------------',
old,
'vs',
new,
string.format (
'\nYou are saved typing %d characters! Wowza!', #old - #new)
}, '\n'))

output:

is a string: asdvxc
not a string: table: 007E0910
not a string: function: 007E31D8

-------------------------------------------
if type (x) == 'string' then
vs
if string (x) then

You are saved typing 10 characters! Wowza!

__call metamethod on the standard string table is not used
currently, might as well give it some use. Already have `tostring` for
string construction

https://redd.it/1h3ueqi
@r_lua

Whats a weird way you do something in lua?

I found that I do oop kind of weirdly and wondered if anyone also did stuff weirdly (granted it has to work).

https://redd.it/1h4874o
@r_lua

What's the conventional technique in Lua for ordered list maintenance?

While tables provide a dictionary (hash), Lua doesn't have, outside of explicit sort, ordered lists. I'm curious what conventional best practice for this problem. Red//Black, AVL, or B trees? Haul in an in-memory DB library such as SQLite and eat the overhead of SQL queries?

What does the wisdom of the crowd say here?

https://redd.it/1h49eoo
@r_lua

Can't Manage to Make HTTP calls for a game mod

First of all, I must say I have no prior modding or Lua background. But, I wanted to create a mod for Baldur's Gate 3 by using BG3 Script Extender, which allows people to write Lua noscripts to interact with the game state.

So, I wanted to see if I could manage to write a Lua noscript that can communicate with SteelSeries Game Engine to manipulate my keyboard's lights, to react to game state (e.g. character health bar on function keys as green light).

With the help of ChatGPT I generated a simple Lua noscript for my use case, which utilizes `socket.http` library:

local http = require("socket.http")

-- Perform the GET request
local response_body, status_code, response_headers = http.request("https://jsonplaceholder.typicode.com/todos/1")

-- Print the response
print("Status Code:", status_code)           -- Similar to `response.status`
print("Response Body:", response_body)       -- Similar to `response.text()`

local function parse_json(json_str)
    local result = {}
    for key, value in json_str:gmatch('"([^"]+)":%s*("?.-["}]?)%s*[,%}]') do
        -- Remove quotes from keys and values if present
        key = key:gsub('"', '')
        if value:match('^".*"$') then
            value = value:sub(2, -2) -- Remove quotes for strings
        elseif value == "true" then
            value = true
        elseif value == "false" then
            value = false
        elseif tonumber(value) then
            value = tonumber(value)
        end
        result[key] = value
    end
    return result
end

-- Parse the JSON response
local data = parse_json(response_body)

-- Access the parsed data
print("Title:", data.noscript)
print("Completed:", data.completed)

The [jsonplaceholder.typicode.com](http://jsonplaceholder.typicode.com) link is only there to test if I can manage to make a call and get a result. I would then replace it with my local Game Engine server URL to communicate with the peripherals.

It seemed to work fine when I ran the Lua noscript using **Lua.exe**. However, after I packaged the noscript and added it as a mod to the game, the Script Extender threw an error:

Loading bootstrap noscript: Mods/SteelSeriesLights/ScriptExtender/Lua/BootstrapServer.lua
bg3se::ExtensionStateBase::LuaLoadGameFile(): Script file could not be opened: Mods/SteelSeriesLights/ScriptExtender/Lua/socket.http
bg3se::lua::State::LoadScript(): Failed to execute noscript: [string "SteelSeriesLights/Server/lights.lua"]:4: attempt to index a nil value (local 'http')
stack traceback:
SteelSeriesLights/Server/lights.lua:4: in main chunk
[C++ Code]: in field 'Include'
builtin://Libs/FileLoader.lua:34: in function <builtin://Libs/FileLoader.lua:6>
(...tail calls...)
SteelSeriesLights/BootstrapServer.lua:1: in main chunk
[C++ Code]: in field 'Include'
builtin://Libs/ModLoader.lua:68: in method 'LoadBootstrap'
builtin://BuiltinLibrary.lua:26: in function <builtin://BuiltinLibrary.lua:25>

From what I can understand, it is interpreting `local http = require("socket.http")` expression as a module file that I created next to my main noscript. To get around this, I checked if I could just put the whole [socket.http code](https://github.com/lunarmodules/luasocket/blob/master/src/http.lua) within the noscript itself, but it also seems to have other dependencies.

Coming from a JavaScript background, I expected to be able to call a method like **fetch** that is built-in to the language, but so far I failed to accomplish my task.

If you could direct me toward any documentation or topic about Lua that might help me understand how to make it work, I would highly appreciate it\^\^

https://redd.it/1h52czt
@r_lua

How do i include a function from another lua?

I mean i know how to include a lua

But how do i use the functions of that lua?

like

local importantthing = require("importantthing")

How do i call a function from it?

https://redd.it/1h5mbkm
@r_lua

AoC Lua Template

Hey all, not sure if anyone here is doing Advent of Code, but I created a lua template that some of you may find helpful: https://github.com/lcpichette/aoc-lua-template

Good luck, and happy holidays to all

https://redd.it/1h5y7w5
@r_lua

FiveM Lua Help

Hello,

So basically purchased a FiveM noscript for esx and went to ask the creator for help on making the reward black money or dirty money instead of cash and he basically told me to screwoff. Kind of ignorant for such a small request BUT I do need some help on this code so that I am able to have it give players black money instead of clean money. Thanks in advance and for your time.

The code is as follows:

RegisterServerEvent('sh-boomerphone:sellItem', function(itemName, count, price)

local src = source

if framework == 'esx' then

local xPlayer = ESX.GetPlayerFromId(src);

if not xPlayer then return false end

if xPlayer.getInventoryItem(itemName)?.count >= count then

xPlayer.removeInventoryItem(itemName, count)

xPlayer.addMoney(price * count)

end



https://redd.it/1h5y70l
@r_lua

How to learn to make a Lanczos/Magic Kernel GIF downscaler in Lua?

I already wrote a decoder that gets all the frames’ pixel color data

https://redd.it/1h61hqz
@r_lua

GitHub - james2doyle/raylib-luajit-generated: An attempt at Raylib LuaJit bindings that are generated from the raylib-parser API docs
https://github.com/james2doyle/raylib-luajit-generated

https://redd.it/1h6mi3v
@r_lua

Why do people still use lua?

Luau outclasses any form of lua out currently with much nicer source code and overall better features + native makes it as fast as gcc c++ so why do people use this irrelevant language?

https://redd.it/1h6zrmf
@r_lua

where do you learn lua for noscripting in games like roblox?

as the noscript says i wanna learn lua but idk how i should go about it or where i would learn it from

https://redd.it/1h7lt41
@r_lua

I am a roblox client or local sided developer and I want to make a client sided path finding service for a sword fighting ai that already has the moving part and attacking now I just wanted to add path finding so it's better any help?

So I've been working on a sword fighting bot on the client and I need some help read the noscript to see what I need help with.

https://redd.it/1h7r12l
@r_lua

Lua Help

I dont know how to use lua and i want to learn, but there are no websites to learn lua

https://redd.it/1h7vbr7
@r_lua

Hercules - A Lua Obfuscator

Hercules is a Lua Obfuscator ive been working on for a bit, as a fun project. I was looking for people to review it, and give me some constructive criticism on what I can do better. Ive linked the GitHub Repository below.

https://github.com/zeusssz/hercules-obfuscator

https://redd.it/1h8561m
@r_lua

Key swapping Lua Scripts for 9 keys (PRTSC - PGDN)

Key swapping Lua Scripts for 9 keys (PRTSC - PGDN) to be NumPad keys (1 - 9) instead.

don't think I ever use these keys unless for something very specific but it can change back with another profile.

Is there anyone who can write this seeing as I have no clue to write noscripts at all. Thanks in advance.

https://redd.it/1h8d9dg
@r_lua