Cocos2dx-lua implements LUA object-oriented programming and inherits Ccsprite

Hard work and perseverance.
Development environment: Mac OSX 10.9.3

Cocos Code IDE:V1.0.0.RC0

Cocos2d-x-3.2rc0

COCOS2DX provides a tool function for class inheritance, in the engine of the/cocos/scripting/lua-bindings/script directory has a named Extern.lua, specifically how to use us to see the code.

Using Lua for object-oriented programming, the Declaration method and the calling method are unified with colons, and the invocation of the attribute is all used for the dot number.

Create a new Lua file in the project named Herorole.lua. This is the Herorole class that we define. The implementation code is as follows:

Herorole = Class ("Herorole")
Herorole.__index = Herorole

-hero attribute
Herorole.name = nil  -name
of the person Herorole.level = nil--its own rank

--the function of a colon can be passed an argument, self, equivalent to C + + 's This 
function herorole:extend (target)
    Local t = Tolua.getpeer (target)
    if not T
        and then T = {}
        tolua.setpeer (target, T)
    end
    setmetatable (T, Herorole)
    return target
end

--Create Herorole object method
function Herorole:createherorole (_imagenamehero , _name, _level)
    Local sprite = Herorole:extend (cc. Sprite:create (_imagenamehero))
    sprite.name = _name
    sprite.level = _level
    return sprite
end

--Change name
function herorole:setheroname (value)
    self.name = value
End

--Get name
function Herorole:getheroname ()
    return self.name
end


--Set level
function Herorole:setherolevel (value)
    Self.level = value
End

-Gets the rank
function herorole:getherolevel () 
    return self.level
End

In Main.lua we create the object with the following code:

Local function Myinit ()
    require "Src/herorole"
    --Create Dogobj object
    Local dogobj = Herorole:createherorole ("res/ Dog.png "," Dog ",
    dogobj:setposition (SIZE.WIDTH/2,SIZE.HEIGHT/2)
    mainlayer:addchild (dogobj)
    Cclog ("Dog Object name = =%s, Leval = =%d", Dogobj:getheroname (), Dogobj:getherolevel ())
    --[lua-print] Dog Object name = = Dog, Leval = =
    
    Dogobj:setheroname ("BigDog")--Change the hero name
    Dogobj:setherolevel (88)      --Change the hero level
    Cclog ("BigDog Object name = =%s, Leval = =%d", Dogobj:getheroname (), Dogobj:getherolevel ())
    --[ Lua-print] BigDog Object name = = BigDog, Leval = =-
    
    
    -Create Catobj object
    Local catobj = Herorole:createherorole ("res/c Rop.png "," Cat ",
    catobj:setposition (SIZE.WIDTH/2,SIZE.HEIGHT/4)
    mainlayer:addchild (catobj)
    Cclog ("Cat object name = =%s, Leval = =%d", Catobj:getheroname (), Catobj:getherolevel ())
    --[lua-print] Cat Object Name = = Cat, Leval = =
End