Inheritance

Class uses __includes to copy behavior from one or more classes or tables.

Single include

local Named = Class({
    getName = function(self)
        return self.name
    end,
})

local Player = Class({
    __includes = Named,

    init = function(self, name)
        self.name = name
    end,
})

Multiple includes

local CanFly = Class({
    fly = function()
        return "flying"
    end,
})

local CanSwim = Class({
    swim = function()
        return "swimming"
    end,
})

local Duck = Class({
    __includes = { CanFly, CanSwim },
})

Includes are applied in order. If two included tables define the same key, the later include can replace the earlier value.

Global string include

String includes are resolved through _G.

_G.SharedBehavior = {
    shared = function()
        return true
    end,
}

local Example = Class({
    __includes = "SharedBehavior",
})