-- Classes
local class_1 = {}
class_1.__index = class_1
function class_1:func_1()
   self.v = self.v + self.v
end

local class_2 = setmetatable({}, class_1)
class_2.__index = class_2
function class_2:func_2()
   self.v = self.v - self.v
end

local class_3 = setmetatable({}, class_2)
class_3.__index = class_3
function class_3:func_3()
   self.v = self.v * self.v
end

-- Components
local comp_1 = {}
comp_1.objects = {}
function comp_1.add(o)
   comp_1.objects[#comp_1.objects + 1] = o
end
function comp_1.func_1(id)
   local o = comp_1.objects[id]
   o.v = o.v + o.v
end
function comp_1.update()
   for i = 1, #comp_1.objects do
      comp_1.func_1(i)
   end
end

local comp_2 = {}
comp_2.objects = {}
function comp_2.add(o)
   comp_2.objects[#comp_2.objects + 1] = o
end
function comp_2.func_1(id)
   local o = comp_2.objects[id]
   o.v = o.v - o.v
end
function comp_2.update()
   for i = 1, #comp_2.objects do
      comp_2.func_1(i)
   end
end

local comp_3 = {}
comp_3.objects = {}
function comp_3.add(o)
   comp_3.objects[#comp_3.objects + 1] = o
end
function comp_3.func_1(id)
   local o = comp_3.objects[id]
   o.v = o.v * o.v
end
function comp_3.update()
   for i = 1, #comp_3.objects do
      comp_3.func_1(i)
   end
end

-- Initial creation
local objects = {}
for i = 1, 5000000 do
   local o = {v = 10}

   objects[i] = setmetatable(o, class_3)

   comp_1.add(o)
   comp_2.add(o)
   comp_3.add(o)
end

-- Actual test
local s1 = love.timer.getTime()
for i = 1, #objects do
   local o = objects[i]
   o:func_1()
   o:func_2()
   o:func_3()
end
local e1 = love.timer.getTime()

local s2 = love.timer.getTime()
comp_1.update()
comp_2.update()
comp_3.update()
local e2 = love.timer.getTime()

print(e1 - s1)
print(e2 - s2)