ECS2/ecs/Component.lua

local ffi = require("ffi")
local class, object =  require("class"), require("class.object")
require("ecs")

local Component = class(object)

local function make_component(name, struct)
    if type(struct) == "string" then
        -- Assuming FFI cdef
        -- TODO : find a way to merge class and userdata
        local ct = ffi.cdef("typdef struct {"..struct.."} "..name..";")
        return ffi.metatype(ct, class(Component))
    elseif struct.instanceof and struct:instanceof(Component) then
        -- Assuming parent class
        return class(struct)
    else
        return class(Component)
    end
end