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Roblox

Built-in library for manipulating Roblox place & model files

local fs = require("@lune/fs")
local roblox = require("@lune/roblox")
-- Reading a place file
local placeFile = fs.readFile("myPlaceFile.rbxl")
local game = roblox.deserializePlace(placeFile)
-- Manipulating and reading instances - just like in Roblox!
local workspace = game:GetService("Workspace")
for _, child in workspace:GetChildren() do
print("Found child " .. child.Name .. " of class " .. child.ClassName)
end
-- Writing a place file
local newPlaceFile = roblox.serializePlace(game)
fs.writeFile("myPlaceFile.rbxl", newPlaceFile)

Deserializes a place into a DataModel instance.

This function accepts a string of contents, not a file path. If reading a place file from a file path is desired, fs.readFile can be used and the resulting string may be passed to this function.

local fs = require("@lune/fs")
local roblox = require("@lune/roblox")
local placeFile = fs.readFile("filePath.rbxl")
local game = roblox.deserializePlace(placeFile)
  • contents The contents of the place to read
  • DataModel

Deserializes a model into an array of instances.

This function accepts a string of contents, not a file path. If reading a model file from a file path is desired, fs.readFile can be used and the resulting string may be passed to this function.

local fs = require("@lune/fs")
local roblox = require("@lune/roblox")
local modelFile = fs.readFile("filePath.rbxm")
local instances = roblox.deserializeModel(modelFile)
  • contents The contents of the model to read
  • { Instance }

Serializes a place from a DataModel instance.

This string can then be written to a file, or sent over the network.

local fs = require("@lune/fs")
local roblox = require("@lune/roblox")
local placeFile = roblox.serializePlace(game)
fs.writeFile("filePath.rbxl", placeFile)
  • dataModel The DataModel for the place to serialize

  • xml If the place should be serialized as xml or not. Defaults to false, meaning the place gets serialized using the binary format and not xml.

  • string

Serializes one or more instances as a model.

This string can then be written to a file, or sent over the network.

local fs = require("@lune/fs")
local roblox = require("@lune/roblox")
local modelFile = roblox.serializeModel({ instance1, instance2, ... })
fs.writeFile("filePath.rbxm", modelFile)
  • instances The array of instances to serialize

  • xml If the model should be serialized as xml or not. Defaults to false, meaning the model gets serialized using the binary format and not xml.

  • string

Gets the current auth cookie, for usage with Roblox web APIs.

Note that this auth cookie is formatted for use as a “Cookie” header, and that it contains restrictions so that it may only be used for official Roblox endpoints. To get the raw cookie value without any additional formatting, you can pass true as the first and only parameter.

local roblox = require("@lune/roblox")
local serde = require("@lune/serde")
local net = require("@lune/net")
local cookie = roblox.getAuthCookie()
assert(cookie ~= nil, "Failed to get roblox auth cookie")
local myPrivatePlaceId = 1234567890
local response = net.request({
url = "https://assetdelivery.roblox.com/v2/assetId/" .. tostring(myPrivatePlaceId),
headers = {
Cookie = cookie,
},
})
local responseTable = serde.decode("json", response.body)
local responseLocation = responseTable.locations[1].location
print("Download link to place: " .. responseLocation)
  • raw If the cookie should be returned as a pure value or not. Defaults to false
  • string?

Gets the bundled reflection database.

This database contains information about Roblox enums, classes, and their properties.

local roblox = require("@lune/roblox")
local db = roblox.getReflectionDatabase()
print("There are", #db:GetClassNames(), "classes in the reflection database")
print("All base instance properties:")
local class = db:GetClass("Instance")
for name, prop in class.Properties do
print(string.format(
"- %s with datatype %s and default value %s",
prop.Name,
prop.Datatype,
tostring(class.DefaultProperties[prop.Name])
))
end
  • Database

Implements a property for all instances of the given className.

This takes into account class hierarchies, so implementing a property for the BasePart class will also implement it for Part and others, unless a more specific implementation is added to the Part class directly.

The given getter callback will be called each time the property is indexed, with the instance as its one and only argument. The setter callback, if given, will be called each time the property should be set, with the instance as the first argument and the property value as second.

local roblox = require("@lune/roblox")
local part = roblox.Instance.new("Part")
local propertyValues = {}
roblox.implementProperty(
"BasePart",
"CoolProp",
function(instance)
if propertyValues[instance] == nil then
propertyValues[instance] = 0
end
propertyValues[instance] += 1
return propertyValues[instance]
end,
function(instance, value)
propertyValues[instance] = value
end
)
print(part.CoolProp) --> 1
print(part.CoolProp) --> 2
print(part.CoolProp) --> 3
part.CoolProp = 10
print(part.CoolProp) --> 11
print(part.CoolProp) --> 12
print(part.CoolProp) --> 13
  • className The class to implement the property for.

  • propertyName The name of the property to implement.

  • getter The function which will be called to get the property value when indexed.

  • setter The function which will be called to set the property value when indexed. Defaults to a function that will error with a message saying the property is read-only.


Implements a method for all instances of the given className.

This takes into account class hierarchies, so implementing a method for the BasePart class will also implement it for Part and others, unless a more specific implementation is added to the Part class directly.

The given callback will be called every time the method is called, and will receive the instance it was called on as its first argument. The remaining arguments will be what the caller passed to the method, and all values returned from the callback will then be returned to the caller.

local roblox = require("@lune/roblox")
local part = roblox.Instance.new("Part")
roblox.implementMethod("BasePart", "TestMethod", function(instance, ...)
print("Called TestMethod on instance", instance, "with", ...)
end)
part:TestMethod("Hello", "world!")
--> Called TestMethod on instance Part with Hello, world!
  • className The class to implement the method for.

  • methodName The name of the method to implement.

  • callback The function which will be called when the method is called.


Returns the path to the system’s Roblox Studio executable.

There is no guarantee that this will exist, but if Studio is installed this is where it will be.

local roblox = require("@lune/roblox")
local pathToStudio = roblox.studioApplicationPath()
print("Studio is located at:", pathToStudio)
  • string

Returns the path to the Content folder of the system’s current Studio install.

This folder will always exist if Studio is installed.

local roblox = require("@lune/roblox")
local pathToContent = roblox.studioContentPath()
print("Studio's content folder is located at:", pathToContent)
  • string

Returns the path to the plugin folder of the system’s current Studio install. This is the path where local plugins are installed.

This folder may not exist if the user has never installed a local plugin. It will also not necessarily take into account custom plugin directories set from Studio.

local roblox = require("@lune/roblox")
local pathToPluginFolder = roblox.studioPluginPath()
print("Studio's plugin folder is located at:", pathToPluginFolder)
  • string

Returns the path to the BuiltInPlugin folder of the system’s current Studio install. This is the path where built-in plugins like the ToolBox are installed.

This folder will always exist if Studio is installed.

local roblox = require("@lune/roblox")
local pathToPluginFolder = roblox.studioBuiltinPluginPath()
print("Studio's built-in plugin folder is located at:", pathToPluginFolder)
  • string