Factorio Forums

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local commands_table = {}

commands_table.follower_lifetime_bonus = {}
commands_table.follower_lifetime_bonus.command = "follower_lifetime_bonus"
commands_table.follower_lifetime_bonus.help = "add or subtract to following_robots_lifetime_bonus. no +/- sets the value, no number prints the value. Value can be decimal"
commands_table.follower_lifetime_bonus.func = function(callback)
  local prm = callback.parameter
  local player_index = callback.player_index
  local value = nil
  local sign = nil

  if prm ~= nil then
--    game.player.print("string passed was " .. prm)
  else
  --  game.player.print("nothing was passed")
  end

  if prm == nil then prm = "" end
  sign = string.match(prm, "^([+-])")
  value = string.match(prm, "^[+-]?([0-9]*%.?[0-9]*)")

  -- the pattern [0-9]*%.?[0-9]* may match none, none, none, producing a successful ""
  if value == nil or value == "" then
    game.player.print("No or invalid value. The current bonus is " .. game.get_player(player_index).force.following_robots_lifetime_modifier)
    return
  end

  --implicitly prm is not nil for this
  if sign == nil then
    game.player.print("setting follower lifetime bonus to " .. value)
    game.get_player(player_index).force.following_robots_lifetime_modifier = tonumber(value)
    game.player.print("Bonus is now: " .. game.get_player(player_index).force.following_robots_lifetime_modifier)
    return
  elseif sign == "+" then
    game.player.print("Adding to bonus")
    game.get_player(player_index).force.following_robots_lifetime_modifier = game.get_player(player_index).force.following_robots_lifetime_modifier + tonumber(value)
    game.player.print("Bonus is now: " .. game.get_player(player_index).force.following_robots_lifetime_modifier)
    return
  elseif sign == "-" then
    game.player.print("Subtracting from bonus")
    game.get_player(player_index).force.following_robots_lifetime_modifier = game.get_player(player_index).force.following_robots_lifetime_modifier - tonumber(value)
    game.player.print("Bonus is now: " .. game.get_player(player_index).force.following_robots_lifetime_modifier)
    return
  end

  -- we should never reach here
  return
end


for _, cmd in pairs(commands_table) do
  commands.add_command(cmd.command, cmd.help, cmd.func)
end