Sample Lua OOP(1)

創建一個
簡單的類別
功能包含

public function 
private functionc
constructor

程式碼：

程式碼: main.lua

local dog = require "Dog" --引入類別

local BigDog = dog.New( "Apple" , 10 ) --創建物件 

local SmallDog = dog.New( "Orange" , 4 )

BigDog:Bark()
BigDog:PrintAge()
SmallDog:Bark()
SmallDog:PrintAge()

程式碼: Dog.lua

local Object = {}

-------------------------------------------------
-- GLOBAL
-------------------------------------------------

function Object.New( name , ageInYears )-- constructor
 local self = 
 {
  name = name ,
  age = ageInYears 
 }

 -------------------------------------------------
 -- PRIVATE FUNCTIONS
 -------------------------------------------------

 local function GetDogYears( realYears ) -- local; only visible in this module
  return realYears * 7
 end

 -------------------------------------------------
 -- PUBLIC FUNCTIONS
 -------------------------------------------------

 function self:Bark()
            print( self.name .. " says \"woof!\"" )
 end

 function self:PrintAge()
     print( self.name .. " is " .. GetDogYears( self.age ) .. " in dog years." )
 end

 return self 

end

return Object

輸出結果：

1月 26 01:14:56.748: Apple says "woof!"

1月 26 01:14:56.748: Apple is 70 in dog years.

1月 26 01:14:56.748: Orange says "woof!"

1月 26 01:14:56.748: Orange is 28 in dog years.