#3.md

参考了Cocos-Lua中的functions.lua里面的class、setmetatableindex 方法

local base = {}
function base:ctor()
    print "call base ctor"
end

function base:run()
    print "call base run"
end

function base:move()
    print "call base move"
end


local obj = setmetatable({base = base}, {__index = base})

function obj.new(...)
    local instance = {}
    setmetatable(instance, {__index = obj})
    instance:ctor()
    return instance
end

function obj:ctor()
    self.base.ctor(self)
end

function obj:move()
    print "call obj move"
end

local o1 = obj.new()
o1:move()
o1:run()

--output
--[[
call base ctor
call obj move
call base run
]]