Lua class

Lua object

SomeClass = { id = "some_class" }
SomeClass.__index = SomeClass
function SomeClass:Create()
    local this = {}
    setmetatable(this, SomeClass)
    return this
end

c1 = SomeClass:Create()
c2 = SomeClass:Create()

print(c1.id) -- "some_class"
print(c2.id) -- "some_class"

Lua class

-- Classes in lua are just tables.
className = {}

--[[
	className:methodName(parameters) is the intended way to make
	a constructor or a method for the class.
    
    className.methodName(parameters) however,
    is preferred to make static methods.
--]]
function className:new(...)
	self.__index = self
    return setmetatable({...}, self)
end

function className:isInstance(instance)
	return getmetatable(instance) == self
end

c = className:new(1, 2, 3)
print(className:isInstance(c)) -- returns true

Lua class example

Car = {}

function Car.new(position, driver, model)
    local newcar = {}

    newcar.Position = position
    newcar.Driver = driver
    newcar.Model = model

    return newcar
end

Source: devforum.roblox.com

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