Factorio Constant Combinator item stack size signal generator

factorio_stacksize_cc.lua

-- From "Fooluaintblack" on the TechnicalFactorio discord:
-- > Caught up with a friend and we adjusted Halke's index script to create a series
-- > of CCs with items, in item ID order, with their stack size as their signal
-- > values. The script changes include:
-- > -reorganised, whitespace, removed "count" as its redundant with "index"
-- > -overwrite the selected CC instead of creating a new one beside it
-- > -spot at the top to add signal names to exclude. You'll see magic lamp,
-- > pushbutton, and textplates are excluded. Textplate string includes wildcards
-- > to capture all signals that start with "textplate"
--
-- /c
local map={}
local excludedItems = {"magic%-lamp", "pushbutton", "textplate%-.+"}

function createStackSizeCcs()
  cc = game.player.selected
  index = 0

  for _, item in pairs(game.item_prototypes) do
    if isIncluded(item) then
      if index > 0 and index % 20 == 0 then
        cc = createCc(cc)
      end

      addSignal(cc, index % 20 + 1, item)
      index = index + 1
    end
  end
end

function addSignal(combinator, index, item)
  combinator.get_control_behavior().set_signal(index, {
    signal = {
      type = "item",
      name = item.name
    },
    count = item.stack_size
  })
end

function createCc(prev)
  return game.player.surface.create_entity({
    name = "constant-combinator",
    force = game.forces.player,
    position = {
      x = prev.position.x + 1,
      y = prev.position.y
    }
  })
end

function isIncluded(item)
  if item.has_flag("hidden") then
    return false
  end

  for _, pattern in ipairs(excludedItems) do
    if string.find(item.name, pattern) then
      return false
    end
  end

  return true
end

createStackSizeCcs()