A Gist showing the basics of how to write a system which lets you create players and optionally store them in variables

enemy.lua

Enemies = {}

function Enemies.new(x, y, w, h, name, health)
  local e = { x = x, y = y, w = w, h = h, name = name, health = health }
  
  table.insert(Enemies, e)
  
  return e
end

function Enemies.update(dt)
  for i,v in ipairs(Enemies) do
    -- Update your enemies here
  end
end

function Enemies.draw()
  for i,v in ipairs(Enemies) do
    -- Draw your enemies here
  end
end

-- any other function for the enemies should follow a similar format,
-- such that they all begin with "Enemies." and contain a "for i,v in ipairs(Enemies)" loop

main.lua

require 'enemy'

local enemy

function love.load()
  enemy = Enemies.new(10, 10, 50, 50, 'Jacques von Hämsterviel', 9001)
end

function love.update(dt)
  Enemies.update(dt)
end

function love.draw()
  Enemies.draw()
end

function love.quit()
  love.event.quit()
end