Lua 5.1 OOP example

fooclass.lua

local fooclass = {}

function fooclass:setColor(color)
  self.color = color
end

function fooclass:getColor()
  return self.color
end

function fooclass.new()
  local self = {}
  self.color = "Red"
  self.setColor = fooclass.setColor
  self.getColor = fooclass.getColor
  return self
end

return fooclass

main.lua

foo = require("fooclass")

bar = foo.new()
bar:setColor("Blue")

fun = foo.new()
fun:setColor("Yellow")

zaz = foo.new()

print("BAR",bar:getColor()) -- Blue
print("FUN",fun:getColor()) -- Yellow
print("ZAZ",zaz:getColor()) -- Red